CBO BC Training Quiz 43

421. The building official shall require what for expansive soils?

Graded approach Special design provisions Steeper slopes Larger areas without vegetation

422. The ground adjacent to the foundation shall be sloped at what percent for how far?

10 percent for 10’ from the foundation 5 percent for 10’ from the foundation 15 percent for 10’ from the foundation 20 percent for 10’ from the foundation

423. Damp proofing for walls retaining earth is required for?

All foundation walls excluding footers All concrete including footers Walls that enclose occupied interior spaces Foundation walls that protect an unoccupied crawl space

424. A gravel drain shall extend how far from the foundation?

6" 4" 12” 18"

425. Pipe or tile placed as a foundation drain shall have gravel how far beneath it?

5" 4" 3" 2”

426. A presumptive load can be assumed in none of the following types of soil except?

Sand Well drained hard packed gravel Bedrock Dry sandy loam

427. The depth of the unbalanced backfill height is the difference in height between the?

Exterior finished ground level and the top of the concrete footing Cantilevered structural supports Landscape partitions Grade and top of piling

428. A 9.5” thick wall with a lateral soil load of 45 PSF with #5 rebar at 37” centers that is 9’ high can support a maximum unbalance backfill of?

11' 10' 9' 8’

429. An 8’ high wall of 8” unfilled CMUs in 30 PSF soil can support a maximum unbalanced backfill height of?

10' 8' 5’ 6'

430. Same as above for 12” unfilled CMUs

10' 7’ 8' 9'

CBO BC Training IBC Quiz 43

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