Louisiana Contractor's Exam -
Concrete and masonry, Roofing and
Exterior Walls Questions and Answers
2026.
2,500 psi p. 72 IRC R402.2 - Answer Minimum psi for a concrete basement slab with
negligible weathering potential
5,000 psi p.72 IRC 402.3.1 - Answer minimum psi for concrete used in precast foundations
2 p.72 IRC 506.2.2 - Answer For a below grade concrete floor, the 4 inches of base course
must pass a ___ inch sieve
6 p.95 IRC R404.1.2.3.4 - Answer The slump of concrete placed in removable forms shall not
exceed ___ inches
16 inches - Answer minimum thickness of a rubble stone masonry wall
8 inches - Answer minimum thickness of a masonry bearing wall more than one-story high in
inches
1/3 - Answer Chases and recesses in masonry walls shall not be deeper than ___of the wall
thickness
c. grade 3 lumber - Answer Masonry over openings can be supported by all of the following,
except:
a. Steel lintels
b. reinforced concrete
c. grade 3 lumber
d. masonry arches
4 inches - Answer When connecting a joist to a masonry wall, the bolt must be embedded at
least ___ inches into the masonry wall
, #5 - Answer What is the minimum reinforcing bar size for an inch stacked bonded masonry
wall
4 inches - Answer Pier caps shall be caped with ___ of solid masonry
#5 - Answer When using shotcrete, what is the maximum size of reinforcing bars
50 - Answer When taking strength test of sshotcrete, a sample must be taken every ___
yards.
500 - Answer allowable shear in pounds for a 1-inch bolt embedded 21 inches into adobe
masonry
2 inches - Answer An interior masonry fireplace must have a clearance to combustibles of
not less than ___ inches
100 degrees - Answer Hot weather construction provisions for masonry should be applied
when the temperature exceeds ___ degrees F
quantity yield - Answer when concrete is mixed properly
fog spraying - Answer will prevent water evaporation in curing
split cylinder test - Answer test to establish concrete's tensile strength
proper water to cement ratio, calcium nitrate, epoxy coating and stainless steel - Answer
ways to prevent metal corrosion in concrete
water reducers
air entertaining agents
accelerators
retarders - Answer concrete admixtures
Lag shields - Answer metal inserts placed in drill holes before lag bolts are placed to cause
expansion
Concrete and masonry, Roofing and
Exterior Walls Questions and Answers
2026.
2,500 psi p. 72 IRC R402.2 - Answer Minimum psi for a concrete basement slab with
negligible weathering potential
5,000 psi p.72 IRC 402.3.1 - Answer minimum psi for concrete used in precast foundations
2 p.72 IRC 506.2.2 - Answer For a below grade concrete floor, the 4 inches of base course
must pass a ___ inch sieve
6 p.95 IRC R404.1.2.3.4 - Answer The slump of concrete placed in removable forms shall not
exceed ___ inches
16 inches - Answer minimum thickness of a rubble stone masonry wall
8 inches - Answer minimum thickness of a masonry bearing wall more than one-story high in
inches
1/3 - Answer Chases and recesses in masonry walls shall not be deeper than ___of the wall
thickness
c. grade 3 lumber - Answer Masonry over openings can be supported by all of the following,
except:
a. Steel lintels
b. reinforced concrete
c. grade 3 lumber
d. masonry arches
4 inches - Answer When connecting a joist to a masonry wall, the bolt must be embedded at
least ___ inches into the masonry wall
, #5 - Answer What is the minimum reinforcing bar size for an inch stacked bonded masonry
wall
4 inches - Answer Pier caps shall be caped with ___ of solid masonry
#5 - Answer When using shotcrete, what is the maximum size of reinforcing bars
50 - Answer When taking strength test of sshotcrete, a sample must be taken every ___
yards.
500 - Answer allowable shear in pounds for a 1-inch bolt embedded 21 inches into adobe
masonry
2 inches - Answer An interior masonry fireplace must have a clearance to combustibles of
not less than ___ inches
100 degrees - Answer Hot weather construction provisions for masonry should be applied
when the temperature exceeds ___ degrees F
quantity yield - Answer when concrete is mixed properly
fog spraying - Answer will prevent water evaporation in curing
split cylinder test - Answer test to establish concrete's tensile strength
proper water to cement ratio, calcium nitrate, epoxy coating and stainless steel - Answer
ways to prevent metal corrosion in concrete
water reducers
air entertaining agents
accelerators
retarders - Answer concrete admixtures
Lag shields - Answer metal inserts placed in drill holes before lag bolts are placed to cause
expansion
