RBC EXAM (2026/2027) QUESTIONS AND ALL
CORRECT ANSWERS 100% SOLVED AND
GUARANTEED PASS
The dimension of fine aggregate in concrete is up to ___ " in diameter and coarse
aggregate is larger than_____".
1/4 for both
Concrete gains most of its strength in how many days?
28 days
In what section of the span of a floor joist is it NOT permitted to cut a notch?
Middle third
What material is required for the door of an ash dump cleanout?
Ferrous metal or masonry
A cricket is required when the width of a chimney is greater than _____inches.
30"
,In what direction must the access gate of a pool swing?
Outwards
What is the minimum ceiling height over a bathtub?
6'-8"
What is the maximum unsupported height of a pier consisting of 12"X16" hollow
core blocks filled with type S mortar?
120"
What is the least outside circular diameter of a handrail?
1 1/4"
Insulation shall have a smoke-developed index not to exceed?
Not to exceed 450
From where must a smoke alarm draw its primary power?
building wiring
What is the live load of an attic with habitable space?
,30 #
What is the required width and height of the egress door?___X___?
32X78
The header is an exterior bearing wall of a building that is 28 feet wide, 50 pound
snow load, supports a roof, ceiling and one center bearing floor. If 3-2X12S are
used, what is the allowable span?
8'-0"
How far into concrete must anchor bolts extend?
7"
What is the maximum height of the backfill for a play masonry foundation wall, 8"
high and 8" thick, is constructed in type GW soil?
5'
If a footing is 18" wide, what is the maximum width of a foundation wall placed on
this footing?
14"
, What is the slope allowance for the bottom of a footing___in ____
1 unit in 10 = 10% Slope
How far must foundation gravel extend above the footing drain?
6"
What distance from a wall must be base of a ladder be placed that has a working
length of 16'?
4' -it is 1/4 the working length
What is the term for the basic starting point for the layout of a building?
benchmark
What is required to vent a hip roof?
soffit and ridge vents
What is the overlap in inches of nominal 8" Palin-bevel wood siding board?
1 1/4" plain bevel wood siding
CORRECT ANSWERS 100% SOLVED AND
GUARANTEED PASS
The dimension of fine aggregate in concrete is up to ___ " in diameter and coarse
aggregate is larger than_____".
1/4 for both
Concrete gains most of its strength in how many days?
28 days
In what section of the span of a floor joist is it NOT permitted to cut a notch?
Middle third
What material is required for the door of an ash dump cleanout?
Ferrous metal or masonry
A cricket is required when the width of a chimney is greater than _____inches.
30"
,In what direction must the access gate of a pool swing?
Outwards
What is the minimum ceiling height over a bathtub?
6'-8"
What is the maximum unsupported height of a pier consisting of 12"X16" hollow
core blocks filled with type S mortar?
120"
What is the least outside circular diameter of a handrail?
1 1/4"
Insulation shall have a smoke-developed index not to exceed?
Not to exceed 450
From where must a smoke alarm draw its primary power?
building wiring
What is the live load of an attic with habitable space?
,30 #
What is the required width and height of the egress door?___X___?
32X78
The header is an exterior bearing wall of a building that is 28 feet wide, 50 pound
snow load, supports a roof, ceiling and one center bearing floor. If 3-2X12S are
used, what is the allowable span?
8'-0"
How far into concrete must anchor bolts extend?
7"
What is the maximum height of the backfill for a play masonry foundation wall, 8"
high and 8" thick, is constructed in type GW soil?
5'
If a footing is 18" wide, what is the maximum width of a foundation wall placed on
this footing?
14"
, What is the slope allowance for the bottom of a footing___in ____
1 unit in 10 = 10% Slope
How far must foundation gravel extend above the footing drain?
6"
What distance from a wall must be base of a ladder be placed that has a working
length of 16'?
4' -it is 1/4 the working length
What is the term for the basic starting point for the layout of a building?
benchmark
What is required to vent a hip roof?
soffit and ridge vents
What is the overlap in inches of nominal 8" Palin-bevel wood siding board?
1 1/4" plain bevel wood siding
