G4-10 • Ordinance No.G4-10
AN ORDINANCE
AMENDING CHAPTER 1636. ENTITLED "ONE AND TWO FAMILY DWELLING CODE"
OF THE ELGIN MUNICIPAL CODE, 1976, AS AMENDED
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF ELGIN,
Section 1. That Chapter 16.36 of the Elgin Municipal Code; 1976;as amended,entitled"One
and Two Family Dwelling Code,"be and is hereby further amended by amending Section 16.36.020
thereof entitled"Additions. Insertions and Changes." Section R403.1.1 therein entitled"Minimum
Size." to read as follows:
Minimum sizes for concrete and masonry footings shall be as set forth in Table
R403.1 and Figure R403.1(1). The footing width, W, shall be based on the load-
bearing value of the soil in accordance with Table R401.4.1. Spread footings shall be
at least 8 inches (203 mm) in thickness. Footing projections, P, shall be at least 2
inches (51 mm) and shall not exceed the thickness of the footing. The size of
footings supporting piers and columns shall be based on the tributary load and
allowable soil pressure in accordance with Table R401.4.1.
Exception: The minimum width of footings shall be 16 inches(406 mm), except for
masonry veneer on frame walls the footing shall be a minimum of 10 (254 mm)
inches deep and 20 (508 mm) inches wide.
Section 2. That Chapter 16.36 of the Elgin Municipal Code, 1976,as amended,entitled -One
and Two Family Dwelling Code,"be and is hereby further amended by amending Section 1636.020
thereof entitled "Additions. Insertions and Changes,"by deleting Section R406.2.1 therein entitled
"Concrete and Masonry Foundation Waterproofing" in its entirety.
Section 3. That Chapter 16.36 of the Elgin Municipal Code, 1976,as amended,entitled"One
and Two Family Dwelling Code,"be and is hereby further amended by amending Section 16.36.020
thereof entitled"Additions, Insertions and Changes,"Table R503.2.1.1(1)therein,to read as follows:
TABLE 8503.2.1.1(1)
ALLOWABLE SPANS AND LOADS FOR WOOD STRUCTURAL PANELS FOR ROOF
AND SUBFLOOR SHEATHING AND COMBINATION SUBFLOOR UNDERLAYMENTa.b.c
(Plywood structural panels are to be rated 4/5 ply)
SHEATHING GRADES ROOF FLOOR
Panel span rating Panel thickness Maximum span(inches) Loade (psf) Maximum span
roof/floor span (inches) (inches)
With edge Without edge Total load Live load
support' support
12\0 1/2 12 12 50 40 0
16\0 1/2 16 16 50 40 0
20\0 5/8 20 20 50 40 0
I
1
4+
24\0 518 24 20 50 40 16
• 24\16 5/8 24 24 50 40 16
32\16 5/8 24 24 50 40 16
4 0\2 0 5/8. 3/4. 7/8 40 32 40 30 24
48\24 21/32; 3/4, 7/8 48 36 45 35 32
60\32 1.1 1/8 60 1 48 1 45 1 35 32
SINGLE FLOOR GRADES ROOF FLOOR'
Panel span rating Panel thickness Maximum span (inches) Loade (psf) Maximum span
(inches) (inches)
With edge Without edge Total load Live load
f support
support
16 oc 1/2 24 24 50 40 16'
20 oc 518, 3/4 24 24 50 40 70117i
24 oc 23/32. 3/4 48 36 35 25 24
32 oc 7/8. 1 48 40 50 40 32
48 oc 1 3/32, 1 1/8 60 48 50 40 48
For SI I inch=25.4 nnn, I pound per square foot=0.0479 Min-
a. The allowable total loads were determined using a dead load of 10psf. If the dead load exceeds 10 psi'. then the live load shall be reduced
accordinghv.
b. Panels continuous over two or more spans with long dimension perpendicular to supports. Spans shall be limited to values shown because of
possible effect of concentrated loads.
C. Applies to panels 24 inches or wider.
d. Lumber blocking,panel edge clips(one midway between each support,except two equally spaced between supports when span is 48 inches),
tongue-and-groove panel edges,or other approved type of edge support.
e. Includes Structural I panels in these grades.
• f. Uniform load deflection limitation: 1/180 of span under live load plus dead load, 1/240 of span under live load onl\.
g. Maximum span 24 inches where 14 inch wood finish flooring is installed at right angles to joists.
h. Maximum span 24 inches where 1.5 inches of lightweight concrete of approved cellular concrete is placed over the subfloor.
i. Unsupported edges shall have tongue-and groovejoints or shall be supported with blocking unless minimum nominal_inch thick underlayntent
with end and edge joints offset at least 2 inches or 1-5 inches of lightweight concrete or approved cellular concrete is placed over the subfloor.or'/<
inch wood finish flooring is installed at right angles to the supports. Allowable uniform live load at maxiniu n span.based on deflection of 1/360
100 psf.
j. Unsupported edges shall have tongue-and-groovejoints or shall be supported by blocking unless nominal''/�inch thick underlayment with end and
edge joints offset at least 2 inches or'/< inch wood finish flooring is installed at right angles to the supports. Allowable uniform live load at
maximum span,based on deflection of 1/360 of span.is 100psE except panels with a span rating of48"on center are limited to 65 psftotal uniform
load at maximum span.
Section 4. That Chapter 16.36 of the Elgin Municipal Code; 1976,as amended;entitled"One
and Two Family Dwelling Code,"be and is hereby further amended by amending Section 16.36.020
thereof entitled"Additions. Insertions and Changes."Section 8807.1 therein entitled"Attic Access."
to read as follows:
Buildings with combustible ceiling or roof construction shall have an attic access
opening to areas that exceed 30 square feet and have a vertical height of 30 inches.
The rough frame opening shall not be less than 22 inches by 30 inches (559 mm by
762 mm) and shall be located in a hallway or other accessible location. A 30 inch
(762 mm) minimum unobstructed headroom in the attic space shall be provided at
some point above the access opening. Attic access doors and hatches shall be
operable from occupant side and achieve a fire-resistance-rating not less than the
assembly being penetrated. When mechanical equipment is located in attics the
is requirements of chapter 16.32, Section M1305.1.3 of this title shall apply.
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• Section 5. That all ordinances or parts of ordinances in conflict xvith the provisions of this
ordinance be and are hereby repealed.
Section 6. That this ordinance shall be in full force and effect immediately after its passage
in the manner provided by laxv.
Ed Schock, Mayor
Presented: January 27; 2010 _4wA L,,,
Passed: January 27, 2010 << '
Omnibus Vote: Yeas: 6 Nays: 0
Recorded: January 28, 2010
Published: January 29, 2010 `Vr
Attest:
Diane Robertson; City &Ierk
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