CBO BC Training Quiz 44

431. The most important feature of a foundation is?

Width Bearing capacity Length Height

432. The minimum concrete strength for a foundation is?

2,000 PSI 2,500 PSI 3,000 PSI 3,500 PSI

433. Stepped footings are required on slopes of?

5 percent or greater 10 percent or greater 15 percent or greater 20 percent or greater

434. The minimum depth of a footing is how far beneath undisturbed ground?

10" 12” 20" 32"

435. Frost protection can be achieved by?

Erecting on solid rock Placing footers on top of the soil Placing footers on top of existing vegetation Placing footers on top of frost blankets

436. A footer layout without a specific design supporting 3 floors of light frame construction is required to be how wide?

18” 15" 12" 30"

437. For a seismic design category of D with Site Class E soil shall have spread footings that are?

Interconnected by ties Placed at least 4' apart Not less than 12" thick Reinforced with #8 rebar

438. Concrete exposed to weather in R-2 and R-3 structures shall have a minimum PSI of?

3,000 2,000 2,500 3,500

439. The minimum slab on ground thickness shall be?

3.5” 4" 3" 2.5"

440. What is the minimum separation distance between #6 rebar in shotcrete reinforcement?

4" 4.5” 5" 5.5"

CBO BC Training IBC Quiz 44