HomeMy WebLinkAboutfinal egress review 7339 able Street APPROVED
Jensen D04/19/2023
EGRESS/ESCAPE WINDOWS
AND WINDOW WELLS
CO detection per R315
2020 IRC. Provide a site plan showing widow
- locations.....
Smoke detectors in each F=aley
sleeping room and on each level
of the house per R314 Building Inspections Department
7071 University Ave N.E., Fridley, MN 55432
Phone: 763-572-3604 1 Email: Buildinglnspections@fridleymn.gov
www.fridleymn.gov
This handout is intended only as a guide and is based in part on the 2020 Minnesota Residential Code, Fridley City ordinances, and good
building practice. While every attempt has been made to insure the correctness of this handout, no guarantees are made to its accuracy or
completeness. Responsibility for compliance with applicable codes and ordinances falls on the owner or contractor. For specific questions
regarding code requirements,refer to the applicable codes or contact your local Building Department.
SCOPE
If you are planning on adding a bedroom, a permit is required for this work and you must have a
second means of egress in either a window or a door. This egress must be on an exterior wall. If a
window is provided, it must meet certain standards as follows:
1. Must be 5.7 square feet of net clear opening.
• Grade floor openings shall have a minimum net clear opening of 5.0 square feet. Grade floor
opening is a window or other opening located such that the sill height of the opening is not
more than 44 inches above or below the finished ground level adjacent to the opening.
2. Glass minimum of twenty inches (20") in width of clear opening.
3. Glass minimum of twenty-four inches (24") in height of clear opening.
4. Cannot be over forty-four inches (44") from the finished floor to the top of the sill.
The window well (exterior) must be thirty-six inches (36") wide and go out thirty-six inches (36") from
the foundation.
If further information is needed, please contact the Building Inspections Department.
REPLACEMENT EGRESS/ESCAPE WINDOWS:
R.310.2.5 Replacement windows. Replacement windows installed in buildings meeting the scope of
the International Residential Code shall be exempt from the requirements of Sections R310.1,
R310.1.1, R310.1.2, and R310.1.3 if the replacement window meets the following conditions:
1. The replacement window is the manufacturer's largest standard size window that will fit within the
existing frame or existing rough opening. The replacement window shall be permitted to be of the
same operating style as the existing window or a style that provides for a greater window opening
area than the existing window;
Rev.05-19-2022
2. The replacement window is not part of a change of occupancy.
ESCAPE AND RESCUE WINDOWS
CASEMENT DOUBLE HUNG SLIDE BY
5.7 SQ FT. 5.7 SQ FT.
NET C A z 5.7 SQ FT. NET CLEAR
2 ' MIN. NET CLEAR 20" MIN.
N
MAXIMUM OF 44 INCHES
MEASURED FROM FLOOR
TO HIGHEST PORTION OF SILL
(TYP)
EGRESS WINDOW LADDER 12"MIN.
3'MI
18"
LADDERS OR RUNGS SHALL HAVE AN INSIDE WIDTH OF AT LEAST 12 INCHES,SHALL PROJECT
AT LEAST 3 INCHES FROM THE WALL AND SHALL BE SPACED NOT MORE THAN 18 INCHES ON
CENTER VERTICALLY FOR THE FULL HEIGHT OF THE WINDOW WELL.
Rev.05-19-2022
ACCESS AND EXIT FACILITIES
AND EMERGENCY ESCAPES
LL
11
I � GRgO
WINDOW WELLS WITH A VERTICAL DEPTH OF MORE THAN 44 INCHES SHALL BE EQUIPPED WITH
AN APPROVED PERMANENTLY AFFIXED LADDER OR STAIRS THAT ARE ACCESSIBLE WITH THE
WINDOW IN THE FULLY OPEN POSITION.THE LADDER OR STAIRS SHALL NOT ENCROACH INTO
THE REQUIRE DIMENSIONS OF THE WINDOW WELL BY MORE THAN 6 INCHES.
.eO3 GRq
A x B=9 SQUARE FEET
THE CLEAR HORIZONTAL DIMENSIONS SHALL ALLOW THE WINDOW TO BE FULLY OPENED AND
PROVIDE A MINIMUM ACCESSIBLE NET CLEAR OPENING OF 9 SQUARE FEET,WITH A MINIMUM
DIMENSION OF 36 INCHES.
Rev.05-19-2022
EMERGENCY ESCAPE
AND RESCUE WINDOWS
34-1/8"CLEAR
OPENABLE AREA=
5.7 SQUARE FEET
MINIMUM SIZE WINDOW
FOR 20"CLEAR HEIGHT OPENABLE AREA=
5.7 SQUARE FEET
w w MINIMUM SIZE WINDOW
U U FOR 24"CLEAR HEIGHT
V N
x�
Q
V
V
FINISHED FLOOR
Because so many fire-related casualties occur when occupants of residential buildings are asleep at
the time of a fire, Section 310.1 of the 2020 International Residential Code (IRC) that:
1. Basements of dwelling units; and
2. Every bedroom below the fourth story shall have at least one (1) operable window or door
approved for emergency escape and rescue. This exit shall open directly into a public street,
public alley, yard, or exit court. The units shall be operable to provide a full clear opening without
the use of separate tools.
Extensive testing by the San Diego Building and Fire Departments established the minimum window
size requirements found in Section 310.1.1:
1. The new Clear Opening area shall be no less than 5.7 square feet (0.53 m2).
2. In addition to the above requirement, the net clear openable height dimension shall be a minimum of
24 inches (610 mm). The net clear openable width dimension shall be a minimum of 20 inches (508
mm). Note that using both minimum figures will not obtain the required area.
3. The finished sill height shall be not more than 44 inches (1118 mm) above the floor.
Minimum Width/Height Requirements for Emergency Escape and Rescue Windows (inches*)
(1 inch=25.4 mm)
Width 20 20.5 21 21.5 22 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27
Height 41 40 39. 1 38.2 37.3 36.5 35.7 34.9 34.2 33.5 32.8 32.2 31.6 31 30.4
Width 27.5 28 28.5 29 29.5 30 30.5 31 31.5 32 32.5 33 33.5 34 34.2
Height 29.8 29.3 28.8 28.3 27.8 27.4 26.9 26.5 26.1 25.7 25.3 24.9 24.5 24.1 24
Rev.05-19-2022