HomeMy WebLinkAbout23050351 - Johnson Letter WESTSHORE
DESIGN ENGINEERS, P.C.
WM - 100 GREAT OAKS BLVD. I SUITE 115
ALBANY I NEW YORK 1 12203
To: All Energy Solar
66D Mainline Dr.
Westfield, MA
Date: May 22, 2023
Ref: 23050351
Subject: Johnson Residence
1661 Camelot Ln. NE
Fridley, MN
To Whom It May Concern,
The following references the Johnson Residence in Fridley, MN:
1. Existing roof framing_
Roofs 1,2,3,4: Pre-fabricated/engineered wood truss is 2x4 at 24"o.c. Based on structural analysis,
this existing structure is capable of supporting all the loads indicated below for this photovoltaic
proj ect.
2. Roof Loading:
- 3psf dead load (solar modules plus mounting hardware)
- 50psf ground snow load
- 5.lpsf roof materials (I.lpsf 2x4, 1.5psf sheathing, 2.5psf asphalt shingles)
- Exposure Category B, 129mph wind (3 sec.)
This installation design will be in general conformance to the manufacturer's specifications, and complies
with all applicable laws, codes, and ordinances, specifically the International Building Code/IBC 2020
and International Residential Code/IRC 2020 including all MN regulations and amendments. The spacing
and fastening of the mounting brackets is to have a maximum of 48"o.c. span between mounting brackets,
staggered, and secured using 5/16" diameter corrosive resistant steel lag bolts and a 2.5" embed. Snap N
Rack Speedseal, deck attachments, or industry similar in lieu of L foot anchors installed per manufacturer
specifications and recommendations.
Thank you.
Westshore Design Engineers
I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision
and that I am duly Licensed Professional Engineer under the laws of the state of Minnesota.
pti p,S A •�t ';
LICENSED
Signature: 41N = z' PROFESSIONAL '.
Name: Nicolas Nitti = ENGINEER
Date: 5/22/2023 License Number: 54597 54597 ,ram
' 9 ••,EXP.6/30/2024 O
Proj ectJohn lbert Coordinator Pres las denNitti, PEOF•M 110
WestShore Design Engineers 11 100 Great Oaks Blvd. 11 Suite 115 11 Albany,NY 12203 II 518.313.7153