bca tn residential contractors exam
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1. What is the minimum footing depth? Below the frost line.
2. What is the minimum psi for concrete used in At least 2500 psi.
footings?
3. What is the maximum spacing of anchor bolts? 6 feet on center
4. What is the minimum anchor bolt embedment? 7 inches.
5. What is the minimum thickness for foundation 8 inches.
walls?
6. How many inches of concrete cover must rein- At least 3 inches.
forcing steel have?
7. What is the minimum thickness for slab vapor At least 10 mil.
barriers?
8. What is the minimum lap splice for a single No. 12 inches.
4 rebar?
9. What is the minimum height for a crawlspace? 18 inches.
10. What type of treatment is required for sill plates Pressure-treated.
in contact with concrete?
11. What are control joints in slabs used for? To control shrinkage/cracking.
12. What is the maximum spacing for control joints? 12 times the slab thickness.
13. What is the purpose of a vapor retarder under a To prevent moisture migration.
slab?
14. What is welded-wire fabric used for? Slab reinforcement.
, bca tn residential contractors exam
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15. What does excessive water in concrete reduce? Strength.
16. What is air-entrained concrete primarily used Improved freeze-thaw resistance.
for?
17. What is the minimum concrete cover over rebar 3 inches.
in a slab-on-grade?
18. What must slab-on-grade be supported on? Stable soil or engineered fill.
19. How far above finished grade must exterior At least 6 inches.
foundation walls extend?
20. How close must anchor bolts be to the end of Within 12 inches.
each sill plate piece?
21. What is the minimum bearing for floor joists on 1.5 inches.
wood?
22. What is the minimum bearing for floor joists on 3 inches.
concrete?
23. When are bridging or blocking required for When joists exceed 10 feet in
joists? length.
24. What is the minimum thickness for subflooring 3/4 inch.
with 16 inch O.C. joists?
25. What is the minimum lap required for joists 3 inches
lapped over supports?
26. What is the maximum depth for end notches in 1/4 of the joist depth.
joists?
27. 1/3 of the joist depth.
, bca tn residential contractors exam
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What is the maximum diameter for bored holes
in joists?
28. Where should floor girder splices be located? Over supports or bearing walls
29. What is the limit for cantilevered joists? 1/4 of the backspan length.
30. What is the minimum stud size for typical 2 by 4 inches.
one-story load-bearing walls?
31. What is the maximum spacing for nonbearing 24 inches on center.
studs using 2x4s?
32. What must headers over openings be sized us- Span tables or engineered design.
ing?
33. What is the minimum offset for double top plate Staggered at least 24 inches.
joints?
34. Where must braced wall lines be provided? within 10ft of each corner and not
more than 20 feet apart.Per IRC
section R602.
35. When is fireblocking required? At every 10 vertical feet in con-
cealed wall spaces.
36. What is required in floor-ceiling assemblies Draftstopping.
when concealed spaces exceed 100 square feet?
37. What must wall sheathing be nailed per? 8d common nails spaced 4 inches
(102 mm) on center at all edges
and 12 inches (305 mm) on center
at each intermediate support with
Study online at https://quizlet.com/_ijdpd8
1. What is the minimum footing depth? Below the frost line.
2. What is the minimum psi for concrete used in At least 2500 psi.
footings?
3. What is the maximum spacing of anchor bolts? 6 feet on center
4. What is the minimum anchor bolt embedment? 7 inches.
5. What is the minimum thickness for foundation 8 inches.
walls?
6. How many inches of concrete cover must rein- At least 3 inches.
forcing steel have?
7. What is the minimum thickness for slab vapor At least 10 mil.
barriers?
8. What is the minimum lap splice for a single No. 12 inches.
4 rebar?
9. What is the minimum height for a crawlspace? 18 inches.
10. What type of treatment is required for sill plates Pressure-treated.
in contact with concrete?
11. What are control joints in slabs used for? To control shrinkage/cracking.
12. What is the maximum spacing for control joints? 12 times the slab thickness.
13. What is the purpose of a vapor retarder under a To prevent moisture migration.
slab?
14. What is welded-wire fabric used for? Slab reinforcement.
, bca tn residential contractors exam
Study online at https://quizlet.com/_ijdpd8
15. What does excessive water in concrete reduce? Strength.
16. What is air-entrained concrete primarily used Improved freeze-thaw resistance.
for?
17. What is the minimum concrete cover over rebar 3 inches.
in a slab-on-grade?
18. What must slab-on-grade be supported on? Stable soil or engineered fill.
19. How far above finished grade must exterior At least 6 inches.
foundation walls extend?
20. How close must anchor bolts be to the end of Within 12 inches.
each sill plate piece?
21. What is the minimum bearing for floor joists on 1.5 inches.
wood?
22. What is the minimum bearing for floor joists on 3 inches.
concrete?
23. When are bridging or blocking required for When joists exceed 10 feet in
joists? length.
24. What is the minimum thickness for subflooring 3/4 inch.
with 16 inch O.C. joists?
25. What is the minimum lap required for joists 3 inches
lapped over supports?
26. What is the maximum depth for end notches in 1/4 of the joist depth.
joists?
27. 1/3 of the joist depth.
, bca tn residential contractors exam
Study online at https://quizlet.com/_ijdpd8
What is the maximum diameter for bored holes
in joists?
28. Where should floor girder splices be located? Over supports or bearing walls
29. What is the limit for cantilevered joists? 1/4 of the backspan length.
30. What is the minimum stud size for typical 2 by 4 inches.
one-story load-bearing walls?
31. What is the maximum spacing for nonbearing 24 inches on center.
studs using 2x4s?
32. What must headers over openings be sized us- Span tables or engineered design.
ing?
33. What is the minimum offset for double top plate Staggered at least 24 inches.
joints?
34. Where must braced wall lines be provided? within 10ft of each corner and not
more than 20 feet apart.Per IRC
section R602.
35. When is fireblocking required? At every 10 vertical feet in con-
cealed wall spaces.
36. What is required in floor-ceiling assemblies Draftstopping.
when concealed spaces exceed 100 square feet?
37. What must wall sheathing be nailed per? 8d common nails spaced 4 inches
(102 mm) on center at all edges
and 12 inches (305 mm) on center
at each intermediate support with
