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LAND ALTMarjorie A. Sullivan 5681 W. Bavarian Pass Fridley, Minnesota 55432 May 13, 1994 City of Fridley 6431 University Ave. N.E. Fridley, Minnesota 55432 Attention: Barbara Dacy, AICP Community Development Director Re: Building Flans Submitted by Contractor John Paggen on West Bavarian Pass, Innsbruck Villages Townhouse Association Dear Ms. Dacy, I am writing to you as Chair of the Architectural Control Committee for our townhouse association. Our committee has met and reviewed the plans under consideration and has given unanimous approval. I can be reached at 571-6756 (h) or 929-9478 (o) if you have questions or require additional information. Sincerely, Marj i Sullivan Chair, Architectuaral Control Comm. Innsbruck Villages Townhouse Assoc. MAS cc. John Paggen FRIDLEY MUNICIPAL CENTER • 6431 UNIVERSITY AVE. N.E. FRIDLEY. MN 55432 • (612) 571-3450 • FAX (612) 571-1287 May 16, 1994 Mr. Phil Blasko, Architect Brent Andersen Associates Inc 7610 Highway #65 NE Fridley, MN 55432 Re: Preliminary Construction Documents (Paggen Haus) Dear Mr. Blasko: The plans submitted for the construction of a four unit townhouse located in Innsbruck Villages are undergoing a preliminary plan review. Your attention is directed to the statements listed but not limited to this review; *UBC Table 5A.. Wall and opening protection of occupancies based on location on property - Openings in exterior walls not permitted less than 3 feet. *Openings located on the North, East and South walls. *UBC 2203. Opening shall be protected with the minimum 3/4 hour. *UBC 4507. Doors - no projection beyond the property. *UBC 3304 (j). Landing at doors shall have the same width as the stairway. *Rescue windows shall meet the requirement as per UBC 1204. *Light, ventilation as per UBC 1205. *UBC 3306. Stairways and handrails shall comply - handrail ends shall return or terminate in newel posts or safety terminals. *UBC 503 (d),3. Separation of Group R and M occupancy - approved one- hour fire resistive construction on the garage side and a self-closing door. *Structural notes - should include information in regards to additional load from high window application. *Provision shall be made for the control of drainage. I Phil Blasko, Architect May 16, 1994 Re: 4 Unit Townhouse Plan Review Page 2 Your attention is directed to the above statements pertaining to the preliminary construction documents. A further review will be required when application for permit is requested (UBC 302). If you have any questions, do not hesitate to call me at 572-3602. I trust you will comply with requirements as set forth by the State of Minnesota and its adoption of rules and the City of Fridley. Sincerely, JO PA IO 7Chief Building Official JP/mh FRIDLEY MUNICIPAL CENTER • 6431 UNIVERSITY AVE. N.E. FRIDLEY, MN 55432 • (612) 571-3450 • FAX (612) 571-1287 May 27, 1994 Mr. Phil Blasko, Architect Brent Andersen Associates Inc 7610 Highway #65 NE Fridley, MN 55432 Re: Preliminary Construction Documents (Paggen Haus) Dear Mr. Blasko: The plans submitted for the construction of a four unit townhouse located in Innsbruck Villages are undergoing a preliminary plan review. Your attention is directed to the statements listed but not limited to this review; Sheet A2, Lower Level - *UBC Section 503 - 1 hour door shall be self-closing. *UBC Section 1210 - Provide hard wired smoke detectors by bedrooms and mechanical rooms (upper and lower levels). *UBC Section 1204 - Bedrooms shall have rescue windows, minimum of 5.7 square feet fully openable. *UBC Section 1205(e) - Ventilation shall be provided in bathrooms and laundry rooms and similar rooms with a mechanical ventilation system capable of providing five air changes per hour. *UBC Section 3306(j) - Handrails shall be placed not less than 34 inches and no more than 38 inches above the nosing of treads and shall be continuous the full length. Handrails shall extend not less than 6 inches beyond the top and bottom riser and shall return or shall terminate in newel post or safety terminals. Sheet A3, Upper Level - *Comments as per sheet A2 to include guardrail the minimum of 36 inches high, maximum spaces of 6 inches, around stairway opening. Sheet A4 - *UBC Section 302(b) - Provide information and data for beam construction of clearstory window application. Mr. Phil Blasko, Architect Re: Preliminary Construction Documents May 27 , 1994 Page 2 Sheet A5 - *UBC Section 23 - All metal hangers and bracing of floor and roof system shall be designed and supplied by manufacturer - at all bearing points. *UBC Section 1707 - Provide flashing for window for water splash. *UBC Section 2516(k) - For units C & D, garage wall detail. *UBC Table 32-B-1 - Provide ice shield to extend 24 inches beyond exterior wall. *UBC Table 32-A - Roof covering, if not more than 3000 square feet of projected roof area and is 10 feet from property line, may be a nonrated system. *UBC Appendix Chapter 35 - Provide sound transmission control for walls, floor and ceiling. Sheet S1 - *UBC Section 2907- Provide frost footing for landings. *UBC Section 3306(j) - Check code requirements for stairs and handrail requirements for height. , *UBC Section 2.905 - Provide a report from soils engineer for placement and design of footing and foundation. *UBC Appendix Chapter 70 - Provide grading plan and control of excavation. Your attention is directed to the above statements pertaining to the preliminary construction documents. A further review will be required when application for permit is requested (UBC 302). If you have any questions, do not hesitate to call me at 572-3602. I trust you will comply with requirements as set forth by the State of Minnesota and its adoption of rules and the City of Fridley. Sincerely, N PALACIO Chief Building Official JP/mh 4. Receipt # � "1 Fee: $__Z4 q. q. o 30.00 PIrA.% CL 1.fA(- 27y.ya APPLICANT-"- Address PPLICANT Address CITY OF FRTQLI�Y LAND ALTERATION PERMIT P I \ If PROPERTY 01A'NERS NAME. cm - Address NAME Address Effective 10/7/93 52f W %v Tel. - Tel. # T LGAL DESC:l2:[I?'I'ION OF PROPERTY Lot ck Addition Lj DESCRIFFION OF T AND ALTERATION Value of Work: $ � — Starting Oat.e: _1 559 Completion Dawvt2Y,6 and Coil) poiiion of r'i((:_ �° Qdn CA � l n c'cVey, Cc�G y,• e PURPOSE OF LAND AIXERATION GLY ATTACHM NES TO APPLICATION ,fie following plans, drawings, el"Iculatiorts, bonds and/or statements Department: 111,1Y be requiredby the Public: Works Ilalf-section map or sketch of property showing all adjacent property indicating the existing buildings and/or stnlctures. [ Grading plan showing existing and proposed finished contours and evaluations. [ J Drainage plan showing existing and proposed drainage structures,mstabilization walls, retaining walls, cribbing; dams, or other protective items. [ Calculations for and approximate quantities of excavation and/or fill required. f l Signed statement from the property owner accepting responsibility for the operation and granting permission for land altcratioli/ruining operation. g [ ] Statemeeit to be attached to cited advising of potential need for soil tests prior to any construction on lots wltere additional fill material has been placed.. [ j :Rice Creek' -Wi,te.rshed District .Approval. Soil Rn g, " ?h e' Gp. %cc.. rv.'l/ �c i -c �..:.-� Jrings s fAe e.;r sf.«t w,Cu .f. Ate dc6.., Y W4.SC✓er� [ J Other,.m . O./w , AA c. Si�C� • �I f� �L. 4•w ��.wCf� IT Gory �T C♦/� /`L�DOr�J S��// `t STIPULATIONS / RLA BEFORE SIGNING ApfLICATION 1 "A: suret}i bond or certified check, in -the aniount of $. (5%.Qi vor zllfe f quark to be completed) .must be submitted'after Approval of application and prior to any work comrsiollc�in . 'lhis bond or check is to ensure satisfacto g ry perfor.manc:e and compliance with the below stated Stipulations. The. surety bond or check shell be kept active until the conipletiola of work affoI- exliii-ation of permit and can only be released by written ric)tificatioT, ()f the. City after a sat, l��c' fill,'d insl)cc tioil Nos been performed by the City. 2. All rir..cess and street froritilge. of the Ian(l alteration sje, nl ist be controlled by . -I fC1)C.e, a Minimum Of fou (4) feet in height. All entrances must have gates that are capable of being locked. . Only rock, sand, gravel, dirt, or similar natural eartli fill is permitted. No concrete, asphalt, or demolition wMtes will be permitted as fill unless a demolition landfill permit is first obtained froin Anoka County. 4. Operations shall be limited to daylight hours and shill not interfere with the Ihcalth and safety of surrounding residents and the premises shall be maintained at all times so as not to create. a nuisance. GREAT iso -, StipuIndons Continua 5. Any explosives used must be done so in actt.oraunre %Nidi Chapter 212, subsections 2-12,07,5A l .y > ,Xi M. and -5F, of the Fridloy City Code and ally other as}talirtat7le sttiriciartis, 0,A., p'kyderal, St;ato, 111dustual, etc. At the end of each Seam's opermions and no later than the;Ast day of i)ctcirtitber each year, ttie site is to be left in a neat and orderly condition, witit iituititurn filc:�pe� o��;i with no ove��ang or vertical bans Find with a level bottorij, 7. On tate Frititq of each work work, or whe" ►}squired by flit City, material frons this ct mItiort that 9s fotitid to exist on City stleots shall be el"ned to 1110 City's stiti� dation by tho hppli ant. �f g, tlp01i etorrtpletion of land alteXttUM operations, the land umst be left according to tlto p:Ans and contours submitted with this i1pplication and planted witli suitable veget.,glou to prevent erosiou. 9. upon roilipi,ctlan Of icon alteration operixtions or expiraflou Of 111,11 pe-imilt, an ii7spection will bo irtade by'tho City of the prcuiiscs acid adjoining sti-ccts, Any damage found to have been Caused by opetflftlt, it a Carr cted by the appliclint ul)dii nolltlentlon by the City. �---�� ....r Tia to, It�:a s P1ro e' t MW 'DatodA.+_�inrw. �' Y Fier y Sviricht! t3 PrQP011Y 0 Wner's Signatt�r�� T; %ceori menti,• d for A Approved By: Tj'F,RMIT EX1''lti.rl'1`1Uh1 rov^vf C.over Mite: Date: Date: A93� Receipt # Fee: $ CITY OF FRIDILEY Effective 5/1/88 �; j` 43 1 Date: 2q Tel LAW ALERATION PERMIT ! 3 d6 APPLICAM Tel. # �f •�� Address `(ano 44-z{- NAI► err . FiR CC QVJ . Tel. # � — ys�20 Address SI5.-x\ Cjmr Lo•K-�. Address IBGAL DESCRIPTION OF PROPERTY Lot _/may _ Block _t2 I Addition -To,%nsbcu c k U%'11— DESCRIPTION %1 DESCRIPTION OF LAM ALTERATION Value cf work: S �^ ^: h^O`\ StartingDate: �Q^"Q �` Completion Date: Source and Composition of Fill PURPOSE OF LAND ALTERATION Page 1 of 4 S A Stipulations Continued 5. - Any explosives used must be done so in accordance with Chapter 212, subsections 212.07.5A, .54 .5C1, .5D, and .5F. of the Fridley City Code and any other applicable standards, e. g. Federal. State, Industrial, eta 6. At the end of each season's operations and no later than the last day of December each year, the site is to be left in a neat and orderly condition, with maximum slopes of 2:1 with no overhang or vertical banks and with a level bottom. 7. On the Friday of each work week, or when required by the City, material from this operation that is found to exist on City streets shall be cleaned to the City's satisfaction by the applicant. 8. Upon completion of land alteration operations, the land must be left according to the plans and contours sdinitted with this application and planteu wit.ii suitable vegetation to prevent erosion. 9. Upon completion of land alteration operations or expiration of this permit, an inspection will be made by the City of the premises and adjoining streets. Any damage found to have been caused by these operations will be corrected by the applicant upon notification by the City. _ Date: 'cant's tore I T Date Property 04Ler's Signature��� Date: Property Owner's Signature FOR CITY USE ONLY. Recommended for Approval By: -Date Approved By: Date: PERMIT EXPIRATION DATE: Page 3 of 4 RECEIPT Effective 5/1/88 % 43 Date:- 1/2q JTC (moi E 9, o Jridley 6431 University Ave. N.E. Tel. 571-3450 Fridley, Minnesota 55432 t3oG v I Tel.. # RECEIVED OF ri a.tc�,c� •.�c���y - ADDRESS Tel. # FOR_.__�a ....�._s__.__-.._._.... _ FUND DPT/DIV ACCOUNT AMOUNT GLF PROJ a� 3 00 0d cS Cd�^Q 1�'1'pdC brnpletion Date: RICHARD D. PRIBYL M Treasurer By _ 19 No. 32179 FLATPAKIT ® MOORE BUSINESS FORMS. INC.. - N I ��� 50� �cQ� x Paqe 1 of t FRIDLEY CITY COUNCIL MEETING OF JANUARY 4 1993 PAGE 11 There being no further nominations, the nominations were closed y Mayor Nee and an unanimous ballot was cast for the appointme of Councilwoman Jorgenson as Representative and Councilman Sc eider as Alternate to School Districts #13 and #14. School District 416 Representative: MOTION by Councilwoman Jorgenson to nominate C ncilman Billings as Representative and Councilman Schneider a Alternate. There being no further nominations, th ominations were closed by Mayor Nee and an unanimous ballot w cast for the appointment of Councilman Billings as Representative and Councilman Schneider as Alternate to School District #16.. League of Minnesota Cities: MOTION by Councilman Billi s to nominate Councilman Fitzpatrick as, Representative and Co Gilman Schneider as Alternate. There being no furt r nominations, the nominations were closed by Mayor Nee and an animous ballot was cast for the reappointment. of Councilman itzpatrick as Representative 'and Councilman Schneider as Al ernate to the League of Minnesota Cities. 011H MOTION b Councilman Schneider to nominate William Hunt, Assistant to th City Manager. Th e being no further nominations, the nominations were closed by yor Nee and an unanimous ballot was cast for the reappointment of William Hunt to the North Metro Convention & Tourism Bureau. 8. 'APPROVAL OF DISPOSITION OF TAX FORFEIT PROPERTIES IN THE CITY OF FRIDLEY• Mr. Burns, City Manager, stated that the Council has received a recommendation to sell tax forfeit properties within the City. He stated it is requested that the original recommendation be changed and that properties 33, 34, 35, 36, and 37 be sold, but to tieZ. minate properties 38, 39_,-_ 40 an 41 from this sale; as the City wishes to• evaluate their use of the properties for public purposes. MOTION by Councilman Schneider to approve the disposition of tax forfeit properties identified as Nos. 33, 34, 35, 36 and 37. Seconded by Councilwoman Jorgenson. Seconded by Councilwoman Jorgenson. Upon a voice vote, all voting aye, Mayor Nee declared the motion carried unanimously. MOTION by Councilman, Billings to advise Anoka County that tax forfeit properties identified as Nos. 38, 39, 40 and 41 be held to N be evaluated regarding their use for public `4 Councilman Schneider. Upon a voice vote,. all pvotin Purposes. a Seconded by declared the motion carried unanimously. g y Mayor Nee 9• RESOLUTION NO. 3-1 93 DESIGNATING DIRECTOR DAND ALTERNATE IRECTOR TO THE.SUSURBAN RATE AUTHORITY: E MOTION by Councilman Schneider to adopt Resolution No. 3-199 Seconded by Councilwoman Jorgenson. Upon a voice vote, all vo ng aye, Mayor Nee declared the motion carried unanimously. g 10. RESOLUTION NO. 4-1993 DESIGNATING AN OFFICIAL NEWSP R FOR THE YEAR 1993: Mr. Pribyl, Finance Director, requested that the F us News be designated as the City's official newspaper, and at the Star Tribune be designated as an alternate. MOTION by Councilwoman Jorgenson to adopt Resol on No. 4-1993. Seconded by Councilman Schneider. Upon a voice ote, Councilwoman Jorgenson, Councilman Schneider, Councilman F'zpatrick and Mayor Nee voted in favor of the motion. Coun lman Billings voted against the motion. Mayor Nee declared t e motion carried by a 4 to 1 vote.. 11. Mr. Pribyl, Finance DirectolitY's ated that this resolution designates Fridley State Bank as official depository and lists those authorized to sign on behalf of the City. He stated that the three officiahorized to sign checks are Richard Pribyl, William Burns, and Howard Koolick. Mr. Pribyl stated that he as reviewed the services provided by Fridley State Bank and, at this time, it does not seem to be beneficial for the City o solicit for banking services. He stated that over the last ive or six years the City's activity has actually been•a loss for the bank. Mayor Nee asked ab ut the facsimile signatures and liability. Mr. Pribyl stat d that this resolution has been approved in this format for ab t twelve years and was probably provided by the banking inst' utions. He stated that the facsimile deals with the City's si ature name plate. He stated that it is the bank's responsi lity to verify signatures, and if someone' forges a signat e it is the bank's problem. Mr. Herrick, the City City Attorney, stated that incurs by using the facsimile Vs'gnature he facsimile., He some risk, but stated that there is it is convenient to have a case pending where a ' ,, l,•(,cx,j Gondotr;,n'iurn No ;4.l t �P ()Ip-2u) 61acK ForeS� stir (; r 4 ` / Gonda ^•il ,.lOr �i5,-IGS) / / (244) (Z(♦p� — I B3) # 36 ''•f .ti r:a ': d `� / P Q ♦ P �< * .•� •! ( 45.240) ', lI >.. •. �:i; YJ L u J a { •1 . ^Pz7 1+ �_') /NNSBf7t/CK V/LLAGES '--•-� PND ADLYT/ON �tJ , :•" ~� t�:;,.:..,,: ! J '� ' ' I•i � .,'• is �� i � y. � y a S• 181-19 ♦ ' a -- 4 IL - xy cc 4 Jf yJ j/' •... R .l1 .I f�• iQIV_• ,ff� '.': l•..; %'.-T'ir _.< ,.A--�\•:�� ._'H�=•fiIOftTH �+�-f�NSBRI�Ci��� t �i''�� .M �..!!/. 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'r�'C: .�,, L:.'.•�'�'i%:`a' �`� It '�• '/ (v ? ��.. 0918 r (/.4i;6•:.: _ - 103 • / ?•- ���,�;L,j;,1(,�'tY,:,.+Lc(. -•f4_ ' /..: `�•' i(i4J J .' *''a :Yi�'7•; •'/i1•:a i�i,. k♦ b� 6 J LOf / _ (G{i��i) R ( 33) m« vu• :i':.rJ ri'r(V + r ., : .e L T .} Cf4•-47j t {yy�� 4 / ••��j':r"!=: �'te:�i':' pVj ..: sY lY .r, 1 : — ,..•. a•- •- . < �' � •. .: `r '. t � � � P ". � ♦ 'L .tU ii• '!s^'. 9918 P6 P1 PIS PJ OOTLOT A • ,j•(. 4C�•Gi) x. �.- '... •�•'•:!„ (34f1�p.Y .. mlv� ca?)a gl (9'07 < P �,C,t,•ibt�. - f/.✓ .....'•i l` tti •••ri..r`• �. % O "°'f-'?dor Y111w l8O(dp... `vC' '(Ja3.lSJ) 14�/��\+ M•' i ��`�N .'•~•^ I; '':1i:r� .. �� ^ ii )' .. ! ,t' � j ,�� 1 t r4n�) . ! ��� .1 J .•. ='•I;� �i: x: ...C,.� ; c.t.�,. ,y r.. ,•Ua/ : 1. ,6y�bi 70 i. si,td���g �^^ ZI"•, ,; •� 47y.��,. • tf:�°.k• 'J{ i 1 .c•l ,• ,rr�> - I 4d I6 1i ���" + "i , } , M7 .ae.•_ •i a t. he) a • F G.t'/(•w� (119 ' -gyp, i. '! ... !..'��ar ~ �.� Ylf:t `ti ,;lfl//-- f .i U� • •_i�'��3�,.g41)r?7 ! , ')a,.�t.:,'�1 tWv • -` ��`z� __moi; .. •� i _. .#' 37 8J IN DATE: TO: - FROM: SUBJECT: Background /, ?, 3, /--1 J_� L Community Development Department PLANNING DIVISION City of Fridley April 4, 1994 l William Burns City Manager er ✓Barbara Dacy, Community Development Director Tax Forfeit Property and Innsbruck Townhome On January 4, 1993, the City Council asked staff to investigate whether or not the vacant townhome four-plex lot in the Innsbruck development would be a potential site for a hospice for Tamarisk. We asked Marge Brickner and Gretchen Hansen to evaluate this site. They advised us that they did not want to pursue this location because it was too small. As a consequence, when Anoka County asked the City to identify whether a public use was proposed for this property, we advised them that there is to be no public purpose for this property. Current Request We have been contacted by John Paggen to construct a townhome within the platted lot dimensions on the property. We have not seen the building plans yet, but we are in the process of researching the original Innsbruck Townhome requirements and will be meeting with him in the near future to evaluate his request. No action is needed by the City Council; I wanted to follow-up on this, however, since I do not believe I advised you in writing regarding Tamarisk's opinion on this property. Should you have any questions, please feel free to contact me. BD/dn M-94-187 GEOTECHNICAL EXPLORATION PROPOSED FOURPLEB OR DUPLEX WEST BAVARIAN PASS AND TRAPP COURT FRIDLEY, MINNESOTA GME PROJECT NO. 4749 GME CONSULTANTS, INC. MINNEAPOLIS, MINNESOTA GEOTECHNICAL EXPLORATION PROPOSED FOURPLEX OR DUPLEX WEST BAVARIAN PASS AND TRAPP COURT FRIDLEY, MINNESOTA GME PROJECT NO. 4749 Copyright, 1994 - GME Consultants, Inc. a wnnaus Tw.ira uaw GME CONSULTANTS, INC. CONSULTING ENGINEERS 14000 21 st Ave. No./ Minneapolis, MN 55447 Phone (612)559-1859 / Fax (612)559-0720 August 4, 1994 Mr. John Paggen Roberts Residential Remodeling _ 13114 Ottawa Court Savage, Minnesota 55378 GME Project No./4749 RE: Report of geotechnical exploration for the proposed fourplex or duplex at West Bavarian Pass and Trapp Court in Fridley, Minnesota Dear Mr. Paggen: We are pleased to submit the results of our subsurface exploration and geotechnical engineering review for this project. Submittal of this report concludes the scope of work defined in our written quotation dated July 12, 1994. We appreciate the opportunity to work on this project with you. If there are any questions about our recommendations, please call me at 559-1859. Coordination of our field services during the construction phase of this project may be arranged through me or Mr. Steve Ruesink, P.E. at the same phone number. Sincerely, GME CONSULTANTS, INC. r Mervyn Mi ess, P.E. Principal Geotechnical Engineer MM: of WILLIAM C. KWASNY, P.E. THOMAS PAUL VENEMA, P.E. WILLIAM E. BLOEMENDAL, P.E. GREGORY R. REUTER, P.E. WYATT A. GUTZKE, P.E. MERVYN MINDESS, P.E. MARK D. MILLSOP SANDRA J. FORREST STEVEN J. RUESINK, P.E. An Equal Opportunity Employer a TABLE OF CONTENTS PROPOSED FOURPLEX OR DUPLEX WEST BAVARIAN PASS AND TRAPP COURT FRIDLEY, MINNESOTA GME PROJECT NO. 4749 Section Page ASFE Notes Regarding Geotechnical Engineering Reports Introduction 1 Project Information 1 Scope of Services 2 Exploration Procedure 3 Soil Sampling 3 Soil Classification 4 Site Conditions 5 Site and Geology 5 Subsurface Conditions 6 Soil Conditions 6 Groundwater Conditions 7 Engineering Review and Recommendations 8 Discussion 8 Foundation Considerations 9 Foundation Recommendations 10 Ground Supported Floor Slab of Residential Structure 12 Foundation Wall Backfill 12 Free Standing Garage Structure 13 Construction Considerations 14 Winter Construction 15 Construction Safety 15 Field Observation and Testing 16 Standard of Care 17 Concluding Comments 17 Appendix nye nnunu@ Ar mw IMPORTANT INFORMATION ABOUT YOUR GEOTECHNICAL ENGINEERING REPORT More construction problems are caused by site subsurface conditions than any other factor. As troublesome as sub- surface problems can be, their frequency and extent have been lessened considerably in recent years, thanks to the Association of Soil and Foundation Engineers (ASFE). When ASFE was founded in 1969, subsurface problems were frequently being resolved through lawsuits. In fact, the situation had grown to such alarming proportions that consulting geotechnical engineers had the worst profes- sional liability record of all design professionals. By 1980, ASFE-member consulting soil and foundation engineers had the best professional liability record. This dramatic turn -about can be attributed directly to client acceptance of problem -solving programs and materials developed by ASFE for its mem- bers' application. This acceptance was gained because clients perceived the ASFE approach to be in their own best interests. Disputes benefit only those who earn their living from others' disagreements. The following suggestions and observations are offered to help you reduce the geotechnical -related delays, cost -over- runs and other costly headaches that can occur during a construction project. A GEOTECHNICAL ENGINEERING REPORT IS BASED ON A UNIQUE SET OF PROJECT -SPECIFIC FACTORS A geotechnical engineering report is based on a subsurface exploration plan designed to incorporate a unique set of project -specific factors. These typically include: the general nature of the structure involved, its size and configuration; the location of the structure on the site and its orientation; physical concomitants such as access roads, parking lots, and underground utilities, and the level of additional risk which the client assumed by virtue of limitations imposed upon the exploratory program. To help avoid costly prob- lems, consult the geotechnical engineer to determine how any factors which change subsequent to the date of his report may affect his recommendations. Unless your consulting geotechnical engineer indicates otherwise, your geotechnical engineering report should not be used: • When the nature of the proposed structure is changed, for example, if an office building will be erected instead of a parking garage, or if a refriger- ated warehouse will be built instead of an unrefrig- erated one; • when the size or configuration of the proposed structure is altered; • when the location or orientation of the proposed structure is modified; • when there is a change of ownership, or • for application to an adjacent site. Ageotechnical engineer cannot accept responsibility for problems which may develop if he is not consulted after factors considered in his report's development have changed. MOST GEOTECHNICAL "FINDINGS" ARE PROFESSIONAL ESTIMATES Site exploration identifies actual subsurface conditions only at those points where samples are taken, when they are taken. Data derived through sampling and subsequent laboratory testing are extrapolated by the geotechnical engineer who then renders an opinion about overall sub- surface conditions, their likely reaction to proposed con- struction activity, and appropriate foundation design. Even under optimal circumstances actual conditions may differ from those opined to exist, because no geotechnical en- gineer, no matter how qualified, and no subsurface explo- ration program, no matter how comprehensive, can reveal what is hidden by earth, rock and time. For example, the actual interface between materials may be far more gradual or abrupt than the report indicates, and actual conditions in areas not sampled may differ from predic- tions. Nothing can be done to prevent the unanticipated, but steps can be taken to help minimize their impact. For this reason, most experienced owners retain their geotechnical consultant through the construction stage, to identify variances, conduct additional tests which may be needed, and to recommend solutions to problems encountered on site. SUBSURFACE CONDITIONS CAN CHANGE Subsurface conditions may be modified by constantly - changing natural forces. Because a geotechnical engineer- ing report is based on conditions which existed at the time of subsurface exploration, construction decisions should not be based on a geotechnical engineering report whose adequacy may have been affected by time. Speak with the geotechnical consultant to learn if additional tests are advisable before construc- tion starts. Construction operations at or adjacent to the site and natural events such as floods, earthquakes or groundwater fluctuations may also affect subsurface conditions and, thus, the continuing adequacy of a geotechnical report. The geotechnical engineer should be kept apprised of any such events, and should be consulted to determine if additional tests are necessary. A GEOTECHNICAL ENGINEERING REPORT IS SUBJECT TO MISINTERPRETATION Costly problems can occur when other design profession- als develop their plans based on misinterpretations of a geotechnical engineering report. To help avoid these prob- lems, the geotechnical engineer should be retained to work with other appropriate design professionals to explain relevant geotechnical findings and to review the adequacy of their plans and specifications relative to geotechnical issues. BORING LOGS SHOULD NOT BE SEPARATED FROM THE ENGINEERING REPORT Final boring logs are developed by the geotechnical en- gineer based upon his interpretation of field logs (assem- bled by site personnel) and laboratory evaluation of field samples. Only final boring logs customarily are included in geotechnical engineering reports. These logs should not under any circumstances be redrawn for inclusion in architectural or other design drawings, because drafters may commit errors or omissions in the transfer process. Although photo- graphic reproduction eliminates this problem, it does nothing to minimize the possibility of contractors misin- terpretating the logs during bid preparation. When this occurs, delays, disputes and unanticipated costs are the all -too -frequent result. To minimize the likelihood of boring log misinterpretation, give contractors ready access to: the complete geotechnical engineering report. Those who do not provide such access may proceed under the mistaken impression that simply disclaiming responsibility for the accuracy of subsurface information always insulates them from attendant liability. Providing the best available information to contractors helps prevent costly construction problems and the adversarial attitudes which aggravate them to disproportionate scale. READ RESPONSIBILITY CLAUSES CLOSELY Because geotechnical engineering is based extensively on judgement and opinion, it is far less exact than other design disciplines. This situation has resulted in wholly unwarranted claims being lodged against geotechnical consultants. 7b help prevent this problem, geotechnical engineers have developed model clauses for use in written transmittals. These are not exculpatory clauses designed to foist the geotechnical engineer's liabilities onto someone else. Rather, they are definitive clauses which identify where the geotechnical engineer's responsibilities begin and end. Their use helps all parties involved recognize their individual responsibilities and take appropriate action. Some of these definitive clauses are likely to appear in your geotechnical engineering report, and you are encouraged to read them closely. Your geotechnical engineer will be pleased to give full and frank answers to your questions. OTHER STEPS YOU CAN TAKE TO REDUCE RISK Your consulting geotechnical engineer will be pleased to discuss other techniques which can be employed to miti- gate risk. In addition, the Association of Soil and Founda- tion Engineers has developed a variety of materials which may be beneficial. Contact ASFE for a complimentary copy of its publications directory. Published by ASSOCIATION OF SOIL AND FOUNDATION ENGINEERS 8811 Colesville Road/Suite G106 Silver Spring, Maryland 20910 301/565-2733 In accordance with the acceptance of our written proposal dated July 12, 1994, by Mr. John Paggen, we have performed a subsurface exploration and geotechnical engineering review for this project. This report presents our findings, evaluations, and recommendations. PROJECT INFORMATION It was originally planned to build a fourplex building with attached garages, on a sloping site, between two existing buildings. After the results of our borings were evaluated and were explained to the developers and purchasers, we understand that the building plan was modified to consist of a duplex structure at the rear or easterly side of the property, with a free-standing garage at the front of the lot, adjacent to West Bavarian Pass. The duplex structure would probably have a regular depth basement, masonry bearing walls to first floor level, with wood frame construction above. Structural loads on the footings of such a building are typically 1.5 to 2.5 kips per lineal foot on the perimeter bearing walls, and 35 to 55 kips on interior columns. The free-standing garage will be very lightly loaded, and may be built on a thickened -edge slab foundation. Design grades have not yet been MM. �MnuM Ai Mw I Mr. John Paggen GME Project No. 4749 2 August 4, 1994 established, but there could be a few feet to up to 7 or 8 feet of cut below present grade to form the basement of the duplex. The free-standing garage structure would be built close to present grade at the front of the lot. SCOPE OF SERVICES As per our written proposal, our work scope for this project was as follows: 1. Explore the subsurface conditions within the originally proposed fourplex building pad by means of six standard penetration borings extending to depths of 15 to 25 feet, for a total of 125 lineal feet of drilling. Actually, the poor soil conditions encountered required that we extend the holes deeper, to depths of 25 to 41 feet, and we drilled 199 lineal feet. 2. Perform some routine laboratory tests on selected samples obtained from the exploration, to assist us in classifying the soils and characterizing their physical and engineering properties. 3. Prepare a geotechnical engineering report, including logs of the test borings, a site plan showing the test hole locations, and our engineering opinions and recommendations regarding: A. Recommended soil correction required to prepare the building pad for construction. B. Recommended foundation type. C. Allowable soil bearing pressure for footing design. D. Estimates of foundation settlements under the applied new loads. E. Recommendations for the floor subgrade preparation, and our opinion regarding the advisability of installing a vapor barrier beneath the basement floor slabs. 6M6 MUMULTAUTIQ_ Iwe. Mr. John Paggen GME Project No. 4749 3 August 4, 1994 F. Recommended lateral earth pressures for use in designing the subgrade walls, and our recommendations for subdrainage of these walls. H. Other items which should be considered, including unusual construction conditions, need for dewatering, precautions for construction so close to the existing adjacent buildings, and special foundation design features. EXPLORATION PROCEDURE The boring locations were staked by our drill crew, measuring from the street and from the adjacent buildings, and using dimensions obtained from the site plan you provided to us. Some survey stakes were also installed by your project land surveyor, but did not include all of the boring locations. The borings were drilled at the approximate locations shown on the enclosed site plan. The field work was performed on July 19, 1994, using an all -terrain CME -550 drill rig. Surface elevations at the borings were obtained by our drill crew, with reference to the garage floor slab of the adjacent unit at 5607 West Bavarian Pass. The elevation of this slab was shown to be 967.47 feet NGVD, on the drawing you provided to us. Soil Sampling The borings were advanced with 4-1/4 inch I.D. x 8 inch O.D. continuous flight, hollow stem augers fitted with a center plug. Soil sampling was performed in advance of the auger tip at 2 to 5 foot intervals of ams: anwauuramra src Mr. John Paggen GME Project No. 4749 4 August 4, 1994 depth, in accordance with ASTM: D 1586, commonly referred to as the Standard Penetration Test. The N -value obtained from this test is an index of the relative density of cohesionless soils and the consistency of cohesive soils. Observations for groundwater levels in the borings were made while drilling and after completion. The borings were backfilled with cement grout after the final water level observations were made. soil classification As the samples were obtained in the field, they were preliminarily classified by the field crew. Representative portions of all samples were sealed in jars and returned to the laboratory for further examination and classification by an Engineer, based on the Unified Soil Classification System, and generally in accordance with ASTM: D 2487 and D 2488. Logs of the borings indicate the depths and identification of the various strata, the N -values, water level information, and pertinent information regarding the method of maintaining and advancing the drill holes, are included in the Appendix. Charts illustrating the soil classification procedure and the descriptive terminology and symbols used on the boring logs are also included. Mr. John Paggen GME Project No. 4749 5 August 4, 1994 The soil samples obtained in the borings will be kept for a period of one month from the date of this report. The samples will then be disposed of, unless we are contacted and directed to do otherwise. SITE CONDITIONS Site and Geolo This site was formerly low-lying poorly drained land in which some post -glacial organic soils developed. The basic naturally -occurring soil type below the organics is a clayey glacial till, underlain at depth by a sand formation. At some time after 1976, possibly in 1977, a partial excavation was made at this lot for a different building plan than the one being presently considered, some fill was placed and a surcharge or pre -load operation attempted. We do no know precise details of that operation, although a remnant of one of the settlement monitoring plates remains. Some fill was also added to this lot, during the development of the Innsbruck Village Subdivision. The maximum difference in elevation among our six borings was about 13 feet, between the high point at the rear, central portion of the lot, and the low point adjacent to the street. rami. nnnum rawra ore Mr. John Paggen GME Project No. 4749 6 August 4, 1994 SUBSURFACE CONDITIONS The subsurface conditions encountered at the boring locations are shown on the boring logs in the Appendix. The logs also indicate the Unified Soil Classifications of the soil types encountered. The soil conditions have been established at our specific test hole locations only. variations in the soil stratigraphy are likely to occur between and around the borings, the nature and extent of which would not become evident until exposed by construction excavation. Interpolation or extrapolation of the results is not warranted. Soil Conditions All six of our soil borings encountered fill, which varied in thickness from 13-1/2 feet at boring F, to a maximum of 29 feet at borings A and C. The fill was a non-uniform mixture of sandy clay and sandy silt with random seams or lenses of fine to medium sand and silty sand. The fill appears to have been only surface compacted. Standard Penetration N -values in the fill varied from 21 to 7 at its upper surface, and from 11 to 2 in the major lower portion. Most of the fill was loose or soft in consistency. It is considered to be still potentially compressible. Remnants of the post -glacial organic soils were found below the fill at five of our six boring locations. This material was not present at boring F, in the southeasterly corner of the property. The post -glacial organic soils varied from 5 to 10 feet in thickness, and n ae MBQ111 VAM-M Me- Mr. John Paggen GME Project No. 4749 7 August 4, 1994 consisted mainly of organic clayey silt and organic sandy clay having N -values of 3 to 4, and moisture contents of 17% to 43%. Our analysis of these data is that the organic soil has already been partially compressed by the weight of superimposed fill, but some additional settlement potential remains. The major, natural, underlying, non-organic soil type at this site was a dark gray sandy clay glacial till which commenced at depths of 19 to 35 feet below present grade at five of the six boring locations. The uppermost several feet of this soil was soft, but the major lower portion is believed to be stiff to very stiff in consistency. This soil type is considered adequate for support of light building loads. At boring F only, the 13-1/2 feet of fill was underlain by reddish -brown sandy silt and silty sand in a medium dense condition. Groundwater Conditions Free groundwater was observed in only two of our six borings, during our relatively short period of observation. The groundwater was noted in borings A and C, at depths of 11.5 and 29.4 feet, respectively, corresponding to elevations 952.1 and 939.3 feet. Boring B extended to 36 foot depth or elevation 930.3 feet, and did not encounter groundwater during our short period of observation. nue r Walld VA a &MA Mr. John Paggen GME Project No. 4749 8 August 4, 1994 Moore Lake is located approximately one mile west of this site and has an average summer water elevation of 874 feet. Long Lake is about one mile east of this site and has an average water elevation of 865 feet. Our analysis of these data is that the groundwater observed in our borings represents a localized perched condition. Perched groundwater of this type can vary considerably in elevation, depending on variations in precipitation, runoff, and adjacent land use. ENGINEERING REVIEW AND RECOMMENDATIONS The engineering recommendations made in this report are based on our understanding of the project as described in the section titled "Project Information". The recommendations are necessarily preliminary in nature, since a definite building plan and floor elevation for the modified design have not yet been established. When the nature, design, and floor elevation of the building have been designed, the opinions and recommendations in this report should be reviewed and the recommendations of this report modified or verified in writing, for that specific building plan. Discussion Based on our interpretation of the soil boring data, it is our opinion that the previous excavation/surcharge operation has not been successful, and that this site is not suitable for construction on conventional footing foundations. A building at this site should AIME EnMAULTAMTA INC. Mr. John Paggen GME Project No. 4749 9 August 4, 1994 either be supported on long cast -in-place concrete ("augercast") piles, or some additional surcharge should be done, along with a special foundation design, to enable the building to be supported on footings. Some site preparation is also required in order to improve the existing soils and make them suitable for support of floor slabs. Foundation Considerations In our opinion, the use of driven piles would not be suitable at this site, because of proximity to the adjacent structures. The vibrations generated by the pile driving could potentially damage the adjacent structures on the north and south sides of this lot, and the fine diesel spray emitted by the pile -driving hammer could also damage the finish on those buildings. Thus, if deep foundations were to be used, we would recommend that they be augered, cast -in-place concrete piles. We understand from you that these would be too expensive for a project of the type proposed, and thus we will not consider them in greater detail at this time. It would be possible to construct a residential building on this site using footings, if the following conditions are met: A. The ground -supported floor slab of the residential structure should be lower than present grade. 6ME Cl NSUILTAMI M_ IMC Mr. John Paggen GME Project No. 4749 10 August 4, 1994 B. A 5 to 7 foot soil surcharge having a unit weight of at least 120 pounds per cubic foot should be placed over the existing soil within the entire proposed building footprint plus a 5 foot wide perimeter strip, and left in place for a period of approximately nine months. C. After the surcharge is removed and the site excavated to proposed floor level, a 3 foot subcut should be made below f]oor I PVPI, and re -filled with controlled compacted granular fill. D. The building could then be supported on lightly loaded footings, and the subgrade foundation walls should be cast -in-place concrete walls which are adequately reinforced and dowelled to the footings, to create an inverted T -beam. E. The Developer/Owner should be willing to accept somewhat higher settlements than are usual for house construction. If the above conditions are met, it is our opinion that a structure could be supported on footings. . Foundation Recommendations The exact building corners plus 5 foot oversizing all around should be staked by the project Land Surveyor. Mineral soil fill which has a loose, dumped, unit weight of at least 120 pounds per cubic foot should be placed over the entire building pad to a height of 7 feet above present grade at the west side of the surcharge, and 5 feet above grade on the east side. The side slopes of this fill should be 1.5 : 1 vertical or flatter. Settlement plates should be installed to monitor the effects of this fill surcharge, and regular readings should be taken to establish the settlement -time pattern. eawc enNYuo TAYTG INP Mr. John Paggen GME Project No. 4749 11 August 4, 1994 After the primary consolidation due to the weight of the surcharge has been completed, and some secondary compression has also occurred, the surcharge may be removed from the building pad, and a subcut made to 3 feet below design lowest floor elevation. The exposed soil at the base of this subcut should be surface compacted with a large self-propelled roller. The compactor should be operated in its non -vibratory mode, to reduce noise and vibration nuisance to the occupants of the adjacent residential structures to the north and south. We then recommend you import clean pit -run sand fill and place it in the subcut in 8 inch loose lifts. The fill should be compacted with the roller operated in its static mode to achieve at least 95% of the maximum Modified Proctor dry density, ASTM: D 1557. The structure may then be supported on spread footing foundations which are designed for a maximum net allowable soil bearing pressure of 1,200 pounds per square foot. The foundation walls above the footing should be constructed of cast -in-place concrete, at least 8 inches thick, and appropriately dowelled to the footing at no more than 24 inch spacings. The footing and foundation wall combination should be reinforced with top and bottom reinforcing steel, to create a rigid, inverted T -beam. The function of this rigid T -beam design is to substantially reduce differential settlement effects on the building. AMC @BYAOLTAM M WC Mr. John Paggen GME Project No. 4749 12 August 4, 1994 All perimeter footings should be at least 4 feet below outside finished grade for frost protection. Interior footings should be at least 16 inches below the top of the floor slab. The factor of safety with regard to shear failure for the recommended foundation design would be at least 3. Total and differential settlements are anticipated to be about 1-1/2 inch and 3/4 inch, respectively. Ground Supported Floor Slab of Residential Structure The recommended 3 foot subcut/refill• program, using well compacted granular fill, will provide an adequate base for the floor slab. We recommend that a vapor barrier covered with a minimum 4 inch thick sand capillary break should be installed below the floor slab, to prevent migration of water vapor upward to the slab. Such water vapor can adversely affect adhesion of tile or carpet, or can cause excessive dampness on the basement floor. _-1 Foundation Wall Backfill The interior sides of the residential building foundation walls should be backfilled with the imported pit -run sand fill used within the 3 foot subcut zone. This soil should be compacted with manually operated vibrating plate compactors to achieve at least 92% of the maximum Modified Proctor dry density. The exterior side of the foundation MYQ M =0111 TAY Me Mr. John Paggen GME Project No. 4749 13 August 4, 1994 walls can be backfilled with non-organic, low plasticity clay or clayey silt derived from the excavation to basement level. This material should also be compacted into place. ubgrade basement walls should be designed to resist an at -rest lateral 1epc arth pressure created by an equivalent fluid having a density of 50 f .. We recommend that an exterior, perimeter drain system be installed around the basement. This would consist of a 4 inch diameter Wr perforated or slotted pipe, bedded in and surrounded by 1-1/2 inch crushed rock. This system would drain through a hole in the wall into _WJoa sump basket in the basement. Free Standing Garage Structure In the garage area, we recommend that a minimum 2 foot excavation be made below design floor level. The exposed subsoil should be thoroughly rolled and surface compacted. Pit -run sand fill should be placed into this subcut and compacted to 95% of the maximum Modified Proctor dry density. The garage may then be supported on a thickened -edge slab foundation. The thickened edges should be designed for a bearing pressure on the subsoil not to exceed 1,000 psf. Three s of rigid styrofoam insulation should be installed horizontally Iat base of thickened edge level, all around the garage structure, and nye wnWnNu TAv mw Mr. John Paggen GME Project No. 4749 14 August 4, 1994 extending outward for a width of at least 4 feet. This should then be covered with sand fill and pavement as appropriate. CONSTRUCTION CONSIDERATIONS When the surcharge is placed, appropriate care should be taken to prevent erosion from the surcharge pile onto the adjacent properties. It may be necessary to erect silt fences on the north and south sides. Compaction of subgrade or fill should be done using equipment not operated in its vibratory mode, because this can cause severe disturbance and/or cracking to adjacent structures. You may even consider doing a pre -construction condition survey of the adjacent units to the north and south, as a precautionary measure. We anticipate that the eventual excavation to basement level and the 3 foot subcut below basement level should not encounter groundwater infiltration. If some water does enter the excavations from surface runoff, it should be promptly pumped out. Fill or footing concrete should not be placed into ponded water in an attempt to displace it, because this can result in some post -construction settlements of the building. We recommend that the building roof be fitted with a complete perimeter rain gutter system. The downspouts should extent at least 5 feet from the edge of the footings to prevent deposition of accumulated rainwater OWE CRYR111 TSYTQ INIP Mr. John Paggen GME Project No. 4749 15 August 4, 1994 at the foundation soils. Excessive water infiltration could cause additional post -construction settlement. Winter Construction If winter construction is contemplated, special precautionsshould be followed by the contractors. If excavation starts after frost has penetrated the soil, ripping may be required, which may result in additional earthwork charges. Only unfrozen backfill should be used, and contractors may charge extra for importing unfrozen soil or keeping backfill from freezing. Placement of fill and/or foundation concrete must not be permitted on frozen soil, nor should the bearing soils under footings or slabs be allowed to freeze after concrete is placed, because excessive post -construction settlement could occur as the frozen soils thaw. Construction safety All excavations must comply with the requirements of OSHA 29 CFR, Part 1926, Subpart P "Excavations and Trenches". This document states that excavation safety is solely the responsibility. of the contractor. Reference to this OSHA requirement should be included in the job specifications. nuip cmmnuiT&wTn_ irc Mr. John Paggen GME Project No. 4749 16 August 4, 1994 The responsibility to provide safe working conditions on this site, for earthwork as well as building construction, or any associated operations, is not borne in any manner by GME Consultants, Inc. Field Observation and Testing On-site observation during placement of the surcharge fill should be done by qualified personnel. We recommend that at least 4 settlement monitoring plates should be established at the time of original placement of the surcharge fill, and that these should be read regularly, at three day intervals initially, followed by weekly intervals until the surcharge fill is at least 6 weeks old, followed by monthly intervals until the termination of the surcharge program. These readings could be taken either by the Geotechnical Engineer or by your project Land Surveyor. A representative number of field density tests should be taken in all controlled fill, to aid in judging its suitability. We suggest that at least one density test should be performed for each 900 square feet of floor area, for each 18 inch lift of fill. The proposed fill material which will be imported should be submitted to a laboratory for tests to check compliance with our recommendations. MWO wnnnul VAMMR ime Mr. John Paggen GME Project No. 4749 17 August 4, 1994 Installation of the building foundation should also be monitored and tested. STANDARD OF CARE The recommendations contained in this report represent our professional opinions. The soil testing and geotechnical engineering services performed for this project have been conducted in a manner consistent with that level of skill and care ordinarily exercised by other members of the profession currently practicing in this area under similar budgetary and time constraints. No other warranty, expressed or implied, is made. Concluding Comments It is agreed between GME Consultants, Inc., and Roberts Residential Remodeling, that this report is furnished in strict confidence for the exclusive use of the Client and its agents. When this report is used by others, it is necessary that they check with GME so that they properly interpret or apply the results or recommendations contained herein. This report represents our completion of this project, based on our understanding of the scope of services. If you require additional GME CONSULTANTS_ INC. Mr. John Paggen GME Project No. 4749 18 August 4, 1994 information or services, please notify us promptly, so that we may respond and serve you better. We should be given the opportunity to revise or update this report once you have a specific building plan developed. Prepared by: Mervyn Minss, P.E. Princi al teotechni cal Engineer Reviewed by: Gregory R. Reuter, P.E. Senior Project Engineer MM:GRR:ef I hereby certify that this pian, specification, or report was prepared by me or under my direct supervision and that I am a duly Registered Professional Engineer under the laws of the State of Minnesofh A ' MervyY Mindes* Date Reg. No. 8435 rave enrow *eumaa uue_ APPENDIX Soil Boring Location Diagram General Notes Soil Boring Logs Unified Soil Classification System Special Notes Regarding Placement of Compacted Fill Soils awo eeraut*arra ire GENERAL NOTES DRILLING & SAMPLING SYMBOLS: SL SS with Liner WCI : Wet Cave In SS : Split Spoon — 1%" I.D., 2" O.D., unless OS Osterberg Sampler — 3" Shelby Tube WD otherwise noted HS Hollow Stem Auger ST Shelby Tube — 2" O.D., unless otherwise noted WS Wash Sample PA Power Auger FT Fish Trail DB Diamond Bit — NX: BX: AX RB Rock Bit AS Auger Sample BS Bulk Sample JS Jar Sample PM Pressuremeter test — in situ VS Vane Shear And 35-50 Standard "N" Penetration: Blows per foot of a 140 pound hammer falling 30 inches on a 2 inch OD split spoon, except where noted. Passing #200 sieve WATER LEVEL MEASUREMENT SYMBOLS: WL Water Level WCI : Wet Cave In DCI Dry Cave In WS While Sampling WD While Drilling BCR: Before Casing Remvoal ACR: After Casing Removal AB : After Boring Water levels indicated on the boring logs are the levels measured in the boring at the times indicated. In previous soils, the indicated elevations are considered reliable ground water levels. In impervious soils, the accurate determination of ground water elevations is not possible in even several days observation, and additional evidence of ground water elevations must be sought. GRADATION DESCRIPTION & TERMINOLOGY Coarse Grained or Granular Soils have more than 50% of their dry weight retained on a #200 sieve; they are described as: boulders, cobbles, gravel or sand. Fine Grained Soils have less than 50% of their dry weight retained on a #200 sieve; they are described as: clays or clayey silts if they are cohesive, and silts if they are non -cohesive. In addition to gradation, granular soils are defined on the basis of their relative in-place density and fine grained soils on the basis of their strength or consistency, and their plasticity. Major Descriptive Term(s) Component (Of Components Also Percent of Of Sample Size Range Present In Sample) Dry Weight Boulders Over 8 in. (200mm) Trace 1-9 Cobbles 8 in. to 3 in. Little 10-19 (200mm to 75mm) Gravel 3 in. to #4 sieve Some 20-34 (75mm to 2mm) Sand #4 to #200 sieve And 35-50 (2mm to .074mm) Silt Passing #200 sieve (0.074mm to 0.005mm) Clay Smaller than 0.005mm CONSISTENCY OF COHESIVE SOILS: RELATIVE DENSITY OF GRANULAR SOILS: Unconfined Comp. Strength, Ou, tsf Consistency N — Blows/ft. Relative Density < 0.25 Very Soft 0-3 Very Loose 0.25-0.49 Soft 4-9 Loose 0.50-0.99 Medium (Firm) 10-29 Medium Dense 1.00-1.99 Stiff 30-49 Dense 2.00-3.99 Very Stiff 50-80 Very Dense 4.00-8.00 Hard 80+ Extremely Dense > 8.00 Very Hard GME CSN3l1LTANTS_ INC ' LOG OF BORING B- A PROJECT Fourplex or Duplex SITE West Bavaria Pass & Trapp Court Fridley, Minnesota CLIENT Roberts Residential Remodeling ARCHITECT-ENGINEER Ci Uj a o m > Z LU LU )- O. a cn �d LU LU p� a 3 = U Q H to DESCRIPTION OF MATERIAL w F N � F- J a w to L �y 3 m ttJ :)STANDARD J ? Z UNCONFINED COMPRESSIVE STRENGTH TONSIF12 1 23 4 6 WATER CONTENT % PENETRATION (BLOWS/FOOT) - DFSIGN bIAOR 964.0 — -10- — 20— —30— 40 — 60 SURFACE ELEVATION 963.6 ISS 6.0 1 Brown to gray SANDY CLAY WITH SILT, trace gravel - very stiff to firm - (CL) (FILL) 21 9 4 , 16 2SS 3SS 4SS 9.0 Brown SILTY SANDY CLAY trace gravel - firm - (CL) (FILL) e ` 5SS 13.0 Brown SANDY CLAY, trace organics - very stiff - (CL) (FILL) 29 ' 19.0 Dark brown SANDY SILT, trace organics - loose - moist - (ML) (FILL) 6 r 2 6SS 7SS 24.0 Dark brown CLAY, trace silt, organics - soft - (CL-CH) (Possible Fill) 4 8ST 9SS 29.0 Gray SANDY CLAY, with thin seams of organics, trace gravel, wood fragments - firm - (CL) (Possible Fill) 5 toss 34.0 Gray brown CLAYEY SILT, with thin layers of organics - soft - (ML) 4 11sS 36.0 Dark gray SANDY CLAY - firm - (CL) 5 End of boring at 36 feet Hollow stem auger used to full depth Borehole backfilled with grout WATER LEVEL OBSERVATIONS GME CONSULTANTS, INC. Geotal 21*t AMverm North MnmeepoW, Memeeote 66"7 (612) 668-1868 BORING STARTED 7/19/94 W.L. Groundwater not encountered BORING COMPLETED 7/19/94 W.L. while drillingor after casing4000 RIG CME-550 DRILLER KJB W.L. removal DRAWN MW APPROVED MM 11.5' 24 hour after boring JOB # 4749 SHEET 1 Of 1 [B®ring Caved at 13.3 feet after drillin The stratification lines represent approximate boundaries T between soil types; insitu the transition may be gradual. I LOG OF BORING B- B PROJECT Fourplex or Duplex SITE West Bavaria Pass & Trapp Court Fridley, Minnesota CLIENT Roberts Residential Remodeling ARCHITECT-ENGINEER IW W _ o Lu 2 n z a -j >- a N Q J us > J W 3 W.--0--- 2 U iQ DESCRIPTION OF MATERIAL W F- J IL WU) 0 X 3 -j to M ? z 1 UNCONFINED COMPRESSIVE STRENGTH TONS/FTP 1 2 34 6 WATER CONTENT % -- •i- - STANDARD PENETRATION (BLOWS/FOOT) - 10 20 30 40 6o SURFACE ELEVATION 966.3 1SS 2.0 Brown SANDY CLAY WITH SILT, trace organics, roots - firm - (CL) (FILL) 7 ( j YY - DESIGNFIJOOR 966.0 2SS 6.0 e zj Dark brown SANDY SILTY CLAY, trace organics, roots - firm - (CL) (FILL) 3ST 4SS 9.0 Dark brown medium SAND WITH SILT, trace gravel, asphalt - medium dense - moist - (SP) (FILL) 13 5SS 14.014 20 Brown medium CLAYEY SAND, trace gravel - medium dense - moist - (SC) (FILL) 6SS 19.01 Gray SANDY CLAY, trace organics, - stiff - (CL) (FILL) 1 9 I + 7SS 24.0 Dark brown SILTY CLAY - firm - (CL) (Possible Fill) 7 r r r 8SS 29.0 Gray brown CLAYEY SILT, with thin layers of organics - soft - (ML) 3 I 3 9SS 36.0 Gray SILTY CLAY WITH SAND, trace gravel - soft - (CL) 316 4 I 1 4 10SS End of boring at 36 feet Hollow stem auger used to full depth Borehole backfilled with grout WATER LEVEL OBSERVATIONS GME CONSULTANTS, INC. ,14 o 21genus North Environmen M��e. M wou 66447 (6121668.1969 BORING STARTED 7/19/94 W.L. Groundwater not encountered BORING COMPLETED 7/19/94 W.L. while drillingor after casingst RIC' CME-550 DRILLER KJB W.L. removal DRAWN MW APPROVED MM JOB u 4749 SHEET 1 of 1 Boring Caved at 8.0 feet after au er The stratification lines represent approximate boundaries between soil types; insitu the transition may be gradual. removal ' LOG OF BORING B- C PROJECT Fourplex or Duplex SITE West Bavaria Pass & Trapp Court Fridley, Minnesota CLIENT Roberts Residential Remodeling ARCHITECT-ENGINEER LU LL = W O mDESCRIPTION > Z LU a -us j H CL Q z�z (n Q > LU W Q 3 W U = U N OF MATERIAL w ~ rn J a w to Cc 3 m w > Z UNCONFINED COMPRESSIVE STRENGTH TONS/F12 1 2 3 4 6 WATER CONTENT % -- �-- STANDARD PENETRATION (SLOWS/FOOT) - 10 20 30 40 60 SURFACE ELEVATION 968.7 1 SS 2.0 Brown SANDY SILT, with crushed rock - medium dense - moist - (ML) (FILL) 2SS 6.0 s 5 —• ; DESIGN FLOOR 966.0 Dark brown CLAYEY SILT, trace organics - stiff to firm - (ML) (FILL) 3SS 4SS 13.0 Brown to gray brown SILTY SANDY CLAY, trace organics, gravel - stiff to soft - (CL) (FILL) 9 3 5SS 6SS 20.5 Brown SANDY CLAY WITH SILT, trace gravel - firm to stiff - (CL) (FILL) 7 > > I ti s 7SS 29.0 Red brown SILTY SAND, trace clay, gravel - damp - (SM) (FILL) 2 , I s 25 0 Gray SILTY CLAY, with seams of silty sandm trace organics, gravel - soft - (CL) (FILL) 8SS 9SS 34.0 Gray SILT SANDY CLAY, with sandy clay lenses, trace gravel - soft - (CL) 4 Z25:10SS35.0 10SS 39.0 Dark brown SILTY WITH ORGANICS - (ML-OL) ' s ' Gray CLAYEY SILT - firm - (ML) 11SS 41.0 Gray SILTY SAND, trace gravel - very loose - wet - (SM) 4 End of boring at 41 feet Hollow stem auger used to full depth Borehole backfilled with grout WATER LEVEL OBSERVATIONS GME CONSULTANTS, INC. MOOD A nu Noft rth "'°"°'°"�`' Minneapolis, Minnesota 66447 (612) 669-1669 BORING STARTED 7/19/94 W.L. ® 35.5 feet while sampling BORING COMPLETED 7/19194 W.L.136 feet before casingremoval RIG CME-550 DRILLER KJB W.L. 29.4' 24 hours after boring DRAWN MW APPROVED MM JOB u 4749 SHEET 1 of 1 33.4 feet after auger removal The stratification lines represent approximate boundaries between soil types; insitu the transition may be gradual. LOG OF BORING B- D PROJECT Fourplex or Duplex SITE West Elavaria Pass & Trapp Court Fridley, Minnesota CLIENT Roberts Residential Remodeling ARCHITECT-ENGINEER LU W = LU LU M > Z a a Q z�z (n Q J LU UA W Q 3 U. LU m z VLL. N DESCRIPTION OF MATERIAL w ►- rn J fA 0: 3 w > Z UNCONFINED COMPRESSIVE STRENGTH TON&Tf 1 2 3 4 6 WATER CONTENT % -- 1-- STANDARD PENETRATION (BLOWS/FOOT) - - - 10 20 3040 60 SURFACE ELEVATIONW 9]0,] igg 3.0.loose Brown SILT, trace wood, roots, gravel - - damp - (ML) (FILL) B DESIGN FLOOR 968.9 2SS 4.0 Dark brown SANDY SILTY CLAY, trace organics, - firm - (CL) (FILL) B • 3SS 6.0 4 a � Dark brown to brown SILTY CLAY WITH ORGANICS, trace sand - soft - (CL-OL) (FILL) 4SS 23.0 3 3 s , i 15 5SS Brown SILTY SANDY CLAY, trace wood, gravel - stiff to soft - (CL) (FILL) 6SS 7SS 8SS 33.0 Gray SANDY CLAY, trace silt, gravel, organic pockets - soft - (CL) 4 40 i �, t 141) 9ss oss 35.0 Gray brown SANDY SILTY CLAY, trace gravel, organics - firm - (CL) e 18 + End of boring at 35 feet Hollow stem auger used to full depth Borehole backfilled with grout WATER LEVEL OBSERVATIONS GME CONSULTANTS. INC. ntal AvenueN � � MinneapoGa.Minnesota 66447 (812) 669-1868 BORING STARTED 7/19/94 W.L. Groundwater not encountered BORING COMPLETED 7/19/94 W.L. while drillingor after casing1� RIG CME-550 DRILLER KJB W.L. removal DRAWN MW APPROVED MM JOB x 4749 SHEET 1 of 1 Boring caved at 14.3 feet after auger I The stratification lines represent approximate boundaries between soil types; insitu the transition may be gradual. removal ' LOG OF BORING B- E PROJECT Fourplex or Duplex SITE West Bavaria Pass & Trapp Court Fridley, Minnesota CLIENT Roberts Residential Remodeling ARCHITECT-ENGINEER LU � _ ,a o LU > Z a U a Q to > J N w Q 3 W LU LL. LU U)975.9 DESCRIPTION OF MATERIAL w H a w U) _ 3 m W J > z UNCONFINED COMPRESSIVE STRENGTH TONSIF12 1 2 3 4 6 WATER CONTENT % __.•-_. STANDARD PENETRATION (BLOWS/FOOT) 10 20 30 40 so SURFACE ELEVATION ISS 5.0 Brown SILT WITH ORGANICS, trace gravel, roots - loose - (ML-OL) (FILL) 8 7 j 2SS 3SS 9.0 Dark brown SILTY CLAY WITH ORGANICS, trace wood fragments, roots - soft - (CL-OL) (FILL) 4 , • 4ST 5SS 14.0 Gray SANDY SILTY CLAY, trace gravel, organics - stiff - (CL) (Possible Fill) iG — ' r 1 —' DESIGNbZAOR — 966.0 6SS 19.0 Gray brown SANDY SILTY CLAY, trace gravel, organics - soft - (CL) 30 I*t 7SS 25.01 Gray SILTY CLAY WITH SAND, trace gravel - stiff to firm - (CL) s B r r r 2 0 8SS End of boring at 25 feet Hollow stem auger used to full depth Borehole backfilled with grout WATER LEVEL OBSERVATIONS GME CONSULTANTS, INC. GooW.L. � Environmental M7nneaPeFa,Minnesota 66447 (812) 668-1868 BORING STARTED 7/19/94 W.L. Groundwater not encountered BORING COMPLETED 7/19/94 while drillingor after casing14400021st'A�a`N RIG CME-550 DRILLER KJB W.L. removal DRAWN MW APPROVED MM JOB # 4749 SHEET 1 of 1 Boring caved at 20.2 feet after au er The stratification lines represent approximate boundaries between soil types; insitu the transition may be gradual. removal LOG OF BORING B- F PROJECT Fourplex or Duplex SITE West Bavaria Pass & Trapp Court Fridley, Minnesota CLIENT Roberts Residential Remodeling ARCHITECT -ENGINEER LU ii _ w o m > >LU Z a � F}- a Z (0 Q LU CC w Q 3 w U_ W U ca DESCRIPTION OF MATERIAL w J a w U) oc LL N 3 m J ? z UNCONFINED COMPRESSIVE STRENGTH TONS/F12 1 2 3 4 6 WATER CONTENT % STANDARD PENETRATION (BLOWS/FOOT) - DESIGN FLOOR 968.9 ®-10— zo— -30— -40-- so- SURFACE ELEVATION 968.4 1SS 2.0 Dark brown to brown SANDY SILT, trace gravel, organics - dry - loose - (ML) (FILL) e 2SS 4.5 9 Red brown SILTY SAND, trace gravel - loose - damp - (SM) (FILL) 3SS 9.0 a 7 r • 23 Gray brown SILTY CLAY WITH SAND, trace roots, gravel, organics - firm - (CL) (FILL) 4SS 5SS 13.0 Brown SILTY SANDY CLAY, trace roots, organics - soft - (CL) (FILL) 40 1*1 6SS 13.0Brown 19.5 SILTY SANDY CLAY WITH ORGANICS, trace roots, wood fragments - (CL -OL) (FILL) 12 1� Red brown SANDY SILT WITH CLAY, trace gravel - stiff - (ML) 7SS 24.0 Red brown fine SAND WITH SILT, trace gravel - medium dense - damp - (SP -SM) 1s 95 SSS MOO Brown fine SAND, trace silt, gravel - loose - damp - (SP) e End of boring at 26 feet Hollow stem auger used to full depth Borehole backfilled with grout WATER LEVEL OBSERVATIONS GME CONSULTANTS, INC. North mental Minneapolis, Minnesota 66447 (812) 669-1869 BORING STARTED 7/19/94 W.L. Groundwater not encountered BORING COMPLETED 7/19/94 W.L. while samplingor after casing1�isAvennue RIG CME -550 DRILLER KJB W.L. removal DRAWN MW APPROVED MM Joe x 4749 SHEET 1 of 1 Boring caved at 21.9 feet after auger The stratification lines represent approximate boundaries I between soil types; insitu the transition may be gradual. removal CLASSIFICATION OF SOILS FOR ENGINEERING PURPOSES (ASTM: D 2487 and 2488) Major divisions Group Typical names Laboratory classification criteria symbols m C; Z C r =_` m E c m C a e- E 0 .me c £ 0 2 MH C a £ a m e CH E E H D 7 ON 0 am= Pt =m8 0 Dre (p30)2 GW dium plasticity, gravelly clays, C.=—greater than 4; Cc=between 1 and 3 mixtures, little or no fines 5C Dm D10XD60 Ea e° 4C clays of low plasticity c Em C `o Not meeting all gradation requirements for GW a m RA V 9 GP � o Q. silty soils, elastic silts I $m m a m H S HW Silty gravels, gravel -sand -silt > a V : = m C3O m� Atterberg limits below "A" > O r m c Above "A" line with P.1. d $ C3 C7 m m " o mZ m £ m 8 GM Clayey gravels, gravel -sand -clay ga £ of dual symbols mixtures N m c— £ m m u d Z.� 3ac ==°4' EE = c G > : GC 9£ m C,=—greater than 4; Cc=—between 1 and 3 t7CL Q E v e °.' C ami e a a9 Poorly graded sands, gravelly C = .. o ; 02 . Not meeting all gradation requirements for SW sands, little or no fines o _. c 16:m = c w m ° CD y � u « n . 8 c yam 8.w m m c SW m O`o Atterberg limits below "A" .o sands, sand -silt mixtures o t o £ d a$ c CA zone with P.I. between 4 o = Em m m a E t) SP requiring use of dual sym- ` �a d Atterberg limits below bols. C"aZ line or P.I. greater than 7 d y .c c m m d 8 e SM LD £mm 0 C v � o m ul a SC m C; Z C r =_` m E c m C a e- E 0 .me c £ 0 2 MH C a £ a m e CH E E H D 7 ON 0 am= Pt =m8 0 Inorganic slits and very fine sands, rock flour, silty or clay- ey fine sands or clayey silts withsli ht lasticity 60(_____T V P Dre (p30)2 Well -graded gravels, gravel -sand dium plasticity, gravelly clays, C.=—greater than 4; Cc=between 1 and 3 mixtures, little or no fines 5C Dm D10XD60 E v c m E c 4C clays of low plasticity c Poorly graded gravels, gravel- ' Not meeting all gradation requirements for GW sand mixtures, little or no fines 0 Inorganic silts, micaceous or � o Q. silty soils, elastic silts N 7 m H S HW Silty gravels, gravel -sand -silt > a V : = m C3O m� Atterberg limits below "A" mixtures m 3r o line or P.I. teas than 4 Above "A" line with P.1. $ C3 C7 m m " o mZ between 4 and 7 are border- tine cases requiring use Clayey gravels, gravel -sand -clay 8 Atterberg limits below "A" of dual symbols mixtures m line or P.I. greater than 7 EE D, (D30)2 Well -graded sands, gravelly 02 8 C,=—greater than 4; Cc=—between 1 and 3 sands, little or no fines E v D10 D 10XDs0 C ami e Poorly graded sands, gravelly C = .. o ; 02 . Not meeting all gradation requirements for SW sands, little or no fines o _. c 16:m = c w ° CD y � u « n . 8 c yam 8.w m Silty E c E I c 8 °m m Atterberg limits below "A" sands, sand -silt mixtures o t o £ d line or P.I. less than 4 Limits plotting in hatched CA zone with P.I. between 4 9g`o« o �EJ g and 7 are borderline cases m m c °' "A" requiring use of dual sym- ` Clayey sands, sand -clay mix- Atterberg limits below bols. tures line or P.I. greater than 7 Inorganic slits and very fine sands, rock flour, silty or clay- ey fine sands or clayey silts withsli ht lasticity 60(_____T V P Inorganic clays of low to me- dium plasticity, gravelly clays, sandy clays, silty clays, lean 5C clays Organic slits and organic silty 4C clays of low plasticity c 3( m Inorganic silts, micaceous or � diatomaceous fine sandy or Q. silty soils, elastic silts 2C Inorganic clays of high plas- ticity, fat clays Organic clays of medium to high plasticity, organic silts Peat and other highly organic soli 10 7 4 0 0 10 20 30 40 5o 60 70 80 so 101 Liquid Limit Plasticity Chart �ttl•i•i•� —For clas�lflcatlo� of fine-grained soils and fine fraction of coarse- �ttl•i•I� —grained soils. ��f♦I —Atterberg Limits plotting In hatched area are borderline classi- tltltltl•I�� fications requiring use of dual symbols Equation' 1 f•��� I�f•�� I���O� I� i_itttt�ltttt��■�tttta a LEGEND EXIST. BLDG. / #5621 32 B,, 4 22 21B4 B—A GARAGE 2 GARAGE �9A UNIT 4 PROPOSED BUILDING UNIT 1 GARAGE —B 20.....B—E 23 UNIT 3 UNIT 2 B—C 17A GARAGE 17 rm3XEB— is EXIST. BENCHMARK: BLDG. GARAGE FLOOR SLAB ELEV. = 967.47 SOIL BORINGS THIS REPORT PREVIOUS BORINGS BY OTHERS GME CONSULTANTS. INC. Gectechnk:d • Materids • Envirc mieMd 22 14000 00 Avenw Ti. M6r�eapo6s. Mtmesoto 55447 tal?� 559-1859 Is - C APPROXIMATE SCALE 0FEET 30' SOL BMG LOCATION DIAGRAM PROPOSED FOURPLE< FRIDLEY. MN ESOTA MM AUG. 94 GME Project No. 4749 SPECIAL NOTES ON PLACEMENT OF COMPACTED FILL SOIL GENERAL The placement of compacted fill for support of foundations, floor slabs, pavements, or earth structures should be carried out by an experienced excavator with the proper equipment. The excavator must be prepared to adapt his procedures, equipment, and materials to the type of project, to weather conditions, and the structural requirements of the architect and engineer. Methods and materials used in summer may not be applicable in winter; fill used in dry excavations may not be suitable in wet excavations or during periods of precipitation; proposed fill soil may require wetting or drying for proper placement and compaction. Conditions may also vary during the course of a project or in different areas of the site. These needs should be addressed in the project drawings and specifications. EXCAVATION/BACKFILL BELOW THE WATER TABLE It is common to have to excavate and replace unsuitable soils below the water table for site correction. As a general rule of prudent construction technique, we recommend that excavation/backfill below the water table not be permitted, unless the excavation is dewatered. Numerous problems can develop when this procedure is attempted without dewatering. — Inability of the equipment operators and soil technicians to observe that all unsuitable soil/materials have been removed from the base of the excavation. — Inability to observe and measure that proper lateral oversizing is provided. — Inability to prevent or correct sloughing of excavation sidewalls, which can result in unsuitable soils trapped within the select backfill. — Inability of the contractor to adequately and uniformly compact the backfill. — Possibility of disturbance of the suitable soils at the base of the excavation. The dewatering methods, normally chosen at the contractor's option, should follow prudent construction practice. Excavations in clay can often be dewatered with sump pits and pumps; this technique would not be applicable for excavation extending into permeable granular soil, especially for depths significantly below the water table. Dewater- ing granular soils should normally be done with well points or wells. When dewatering is needed, we strongly recommend that the procedures be discussed at pre-bid or pre -construction meetings. The dewatering technique chosen by the contractor should be reviewed by the architect and engineer before construction starts; it should not be left until excavation is underway. The selection of proper backfill materials is important when working in dewatered excavations. Even with dewatering, the base is usually wet and the contractor must be careful not to disturb the base. We recommend that the first lifts of backfill be a clean medium to course grain sand with less than 5% passing the #200 sieve. The use of silty sand, clayey sand, or cohesive/semi-cohesive soils is not recommended for such situations. The excavator should be required to submit samples of the proposed material(s) he plans to use as backfill before the fill is hauled to the site, so that it can be tested for suitability. WINTER EARTHWORK CONSTRUCTION Winter earthwork presents its own range of problems which must be overcome; the situation may be complicated by the need for dewatering discussed above. During freezing conditions, the fill used must not be frozen when delivered to the site. It also must not be allowed to freeze during or after compaction. Since the ability to work the soil while keeping it from freezing depends in part on the soil type, the specifications should require the contractor to submit a sample of his proposed fill before construc- tion starts, for laboratory testing. If the soil engineer and structural engineer determine that it is not suitable, it should be rejected. In general, silty sand, clayey sand, and cohesive/semi-cohesive soils should not be used as fill under freezing conditions. All frozen soil of any type should be rejected for use as compacted fill. It is important that compacted fill be protected from freezing after it is placed. The excavator should be required to submit a plan for protecting the soil. The plan should include details on the type and amount of material (straw, blankets, extra loose fill, topsoil, etc.) proposed for use as frost protection. The need to protect the soil from freezing is ongoing throughout construction and applies both before and after concrete is placed, until backfilling for final frost protection is completed. Foundations placed on frozen soil can experience heaving and significant settlement, rota- tion, or other movement as the soil thaws. Such movement can also occur if the soil is allowed to freeze after the concrete is placed and then allowed to thaw. The higher the percentage of fines (clay and silt, P-200 material) in the fill, the more critical is the need for protection from freezing. c"C"nu0111TnwuTc purr. MOISTURE CONTROL OF FILL The contractor should be required to adjust the moisture content of the soil to within a narrow range near the optimum moisture content (as defined by the applicable Proctor or AASHTO Test). In general, fill should be placed within about 2% of optimum. The need for moisture control is more critical as the percentage of fines increases. Naturally -occurring clayey sand or cohesive/semi-cohesive soil are often much wetter than the optimum. Placing and attempting to compact such soils to the specified density may be difficult, or not possible. Even if compacted to the specified density, excessively wet soils may not be suitable as floor slab or pavement subgrades due to pumping under applied load. This is especially true when wet cohesive/semi-cohesive soil is used as backfill in utility trenches under streets. Excessively wet soil in thick fill sections may cause post -construction settlement beyond that estimated for fill placed at or near (±2%) the optimum moisture content. An exception to this would be low permeability soil placed as a pond liner or for a dam. Such soil should usually be placed at 2% to 4% above the optimum moisture content, to provide for a lower insitu permeability. Also, shrinking/ swelling soils (expansive clay) should be placed at about 2% to 4% above optimum moisture to reduce the possibility of soil expansion. Clayey silt, silt, or very silty fine sand should be placed excessively dry. Such soils can undergo post -construction consolidation upon being wetted, even if the specified density had been achieved. This is caused by the collapse of flocculant soil particle arrangement, and can result in settlement of buildings or slabs constructed over the soil. Proper controld5f fill soil moisture is the responsibility of the excavator. The excavator should evaluate the need for wetting or drying the soils, based either on the data in the soil report, or his own site testing. If the excavator is bringing in off-site fill, it is also his responsibility to evaluate the moisture content of the soil, and the need for wetting or drying. We recommend that this matter be addressed in the project specifications. CONSTRUCTION ON COMPACTED SOIL After the select fill has been placed, compacted, and tested, it must be maintained and protected in order to properly support structures. The suitability of compacted fill soil can be greatly diminished if it is allowed to freeze, become saturated while unconfined (such as in footing excavations or at the surface of slab/placement subgrade), or disturbed by construction equipment. The responsibility for protecting the soil, or for correcting any disturbance, should be clearly defined in the specifica- tions. Soils which become wet and soft after compaction testing do not necessarily reflect inaccurate field density tests. Especially with non -expansive cohesive/semi-cohesive soils, saturation when unconfined can severely reduce the shear strength while the density remains adequate. The reduced shear strength can cause footings, floor slabs, or pavements to settle or fail under load. We strongly recommend that all pavement subgrade be test rolled (MN/DOT Specification 2111) immediately before paving to determine if the subgrade has not been protected and soft spots have developed. FLOOR SLAB SUBGRADE AND UTILITY TRENCHES This facet of construction presents special problems, especially if the slab subgrade is allowed to freeze. When the soil thaws, it undergoes a period of temporarily lower shear strength. Floor slabs should not be cast over soil in such a weakened or frozen condition (reference pertinent PCA and ACI publications). To do so can result in cracked and failing slabs. The time period to heat and thaw a building may place the construction schedule and/or costs in jeopardy. We strongly recommend that this matter be reviewed in pre-bid and pre -construction meetings. Backfilling of utility trenches in the floor slab subgrade can be difficult. If the soil is wet, compaction to the specified density may be. difficult, or not possible. The narrowly cut trenches may preclude the use of proper compaction equipment. With the use of small equipment in confined areas, the contractor must place the soil in thin lifts (4 to 6 inches), with the soil at the proper moisture content. This work is typically carried out by contractors other than the mass grading or earthwork contractor. We strongly recommend that the responsibility to carry out the compaction be clearly detailed in the applicable section of the specifications, and reviewed with the appropriate contractor and subcontractor. t Car slabEl '1676 , 91 I $r S 81010000" E7 �t 1 Lot 4 prop Lot 3 T45>�, �o,� �A�� Lot 2, • ��e �i` In Block 18 I ,... ten. S s7 °-00'�`p Q 00 +QQ �xt�.6l��► 'a:i 1,1,f � .5?C b$ Car alae Fa j6�x4� q I za.aa �y C? Zoo Lot 1 bullding � ���, W OR �!1 Lot 2 Gar slab EI Wilt 37, Lot`, CSS ,j le Block 22 Scale: 1" = 20' hereby certify that this survey, pian, or port was prepared by me or under my direct pervision and that I am a duly Registered nd Surveyor under the Laws of the State Minnesota. Ita Reg. No. 8140 BRANDT ENGINEERING & 1.600 West 143rd Street, Burnsville, MN 55306 - - M I I I I I I r~� 7 00 DESCRIPTION N Lots " 1, i,'3, & 4, Block .21, INNSBRUCK VILLAGES Hennepin County, Minnesota Plat bearings shown o Denotes iron monument Existing,,, i'ropased VEY'1NG Suite