CBO BC Training Quiz 23

221. Minimum slab thickness is?

4" 3.5” 3" 2.5"

222. Fill under the slab shall not exceed?

Unlimited 24” 12" 36"

223. ½” sheathing shall be fastened with galvanized roofing nails of what minimum length?

3" 2" 3.5” 2.5"

224. Wall sheathing shall be edge stapled by what minimum spacing?

6" 4" 3” 8"

225. What length of nails minimum is required for subfloor wood structural panels?

Know IRC Table 602.3(1) for the different sizes Know IRC Table 602.3(1) for the different sizes Know IRC Table 602.3(1) for the different sizes Know IRC Table 602.3(1) for the different sizes

226. With a ground snow load of 30 PSF and a 28’ perpendicular width from the ridge, using Doug-fir, 2-2”X10” headers, what’s the maximum span supporting just a roof and ceiling?

7’-3” 7' 8' 6'-6"

227. What’s the minimum masonry thickness for solid walls of one story?

6” 7" 8" 5"

228. Felt used for water protection shall be applied with the upper layer lapped over the lower layer not less than _____ inches, and the felt lapped over joints not less than ____ inches?

3/4 4/4 6/6 2/6

229. Masonry veneer ties shall not be spaced more than _____ on center horizontally.

38" 36" 32” 24"

230. Weep holes shall be located on the?

Top concource of bricks First course of bricks Every third row of bricks Within the first two rows of bricks at the top and the bottom of the wall

CBO BC Training IRC Quiz 23

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