Los Angeles County Municipal Code Ch. 15 Roof Assemblies

TABLE 1507.3.7 CLAY AND CONCRETE TILE ATTACHMENTa, b, c

GENERAL - CLAY OR CONCRETE ROOF TILE

Maximum Allowable Stress Design Wind Speed, V asd f (mph)	Mean roof height (feet)	Roof slope <3:12	Roof slope 3:12 and over
85	0 - 60	Minimum slope: 2.5:12 Two fasteners per tile.	Two fasteners per tile.
100	0 - 40
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INTERLOCKING CLAY OR CONCRETE ROOF TILE WITH PROJECTING ANCHOR LUGS d, e

(Installations on solid sheathing with battens)

Maximum Allowable Stress Mean roof height (feet) Roof slope <5:12 Roof slope 5:12<12:12 Roof slope 12:12 and over Design Wind Speed, V asd f (mph)

85 0 - 60 Minimum slope is 4:12. One One fastener per tile. Tiles One fastener required for fastener per tile. with installed weight less than every tile. Tiles with installed 9 lbs/sq. ft. require not fewer weight less than 9 lbs./sq. ft. 100 0 - 40 than one fastener per tile. require not fewer than one fastener per tile.

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INTERLOCKING CLAY OR CONCRETE ROOF TILE WITH PROJECTING ANCHOR LUGS (Installations on solid sheathing without battens)
Maximum Allowable Stress Design Wind Speed, V asd f (mph)	Mean roof height (feet)	Minimum roof slopes 4 units vertical in 12 units horizontal Maximum slope 7 units vertical in 12 units horizontal
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For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 4.882 kg/m 2 .

a Minimum fastener size. Hot dipped galvanized ring shank or other corrosion-resistant nails not less than No. 11 gage with 5 / 16 -inch head. Fasteners shall be long enough to penetrate into the sheathing ¾ inch or through the thickness of the sheathing, whichever is less. Attaching wire for clay and concrete tile shall not be smaller than 0.083 inch and shall be copper, brass, or stainless steel.

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(Ord. 2025-0047 § 20, 2025.)