CSLB Class B General Contractor's License - Building's
Exam: General Building Updates I LATEST EDITION
2025/2026 WITH WELL ELABORATED ANSWERS!!
B) 6 on edge 12 on center - ANSWER☑️⭐-What fastener spacing is required for the corners of oriented
strand board (OSB)?
A) 6 on edge or 8 on center
B) 6 on edge 12 on center
C) 8 on edge 12 on center
D) 8 on edge 16 on center
B) Yes, with a pattern match - ANSWER☑️⭐-Can linoleum be repaired or patched?
A) Never
B) Yes, with a pattern match
C) Yes, just cut small patch to fit
D) No, because it's not repairable
- ANSWER☑️⭐-What is the best tool used to cut a 2 foot diameter hole in plywood?
A) Jigsaw
B) Keyhole saw
C) Mason saw
D) Hacksaw
A) Contractor carrying asbestos certification - ANSWER☑️⭐-Who may work with asbestos?
,A) Contractor carrying asbestos certification
B) General contractor
C) General Engineer
D) Subcontractor
D) 6"x6" with a joint size between 1/8" and 1/4"
The size of the tile is not as important as the joint size. Sanded grouts are typically used for grout joints
that are wider than 1/8". - ANSWER☑️⭐-What tile is better with sanded grout?
A) 4"x4" with a joint size between 3/32" and 1/16"
B) 4"x4" with a joint size between 1/16" and 5/8"
C) 6"x6" with a joint size between 1/16" and 1/8"
D) 6"x6" with a joint size between 1/8" and 1/4"
D) Glue down
Hardwood should never be nailed directly to concrete. Standard strip hardwood is installed by blind
nailing to wood subfloors or sleepers that are set over mastic. If using sleepers don't forget to place a
polyethylene sheet over the sleeper planks. If installing tongue-and-groove hardwood planks over
concrete, you may use mastic (paste-like adhesive). This is known as the glue down method. -
ANSWER☑️⭐-If you have concrete subfloor, how would you install hardwood on top?
A) Nail it but only if there is a vapor barrier under the slab
B) Nail it but only if the hardwood is heavy enough to avoid warping
C) Nail it along with a water-based membrane
D) Glue down
10d - ANSWER☑️⭐-When connecting a rafter with collar ties, what nails are used?
, 34"
According to the California Building Code, lavatories and sinks shall be installed with the front of the
higher of the rim or counter surface 34 inches (864 mm) maximum above the finished floor. In
residential dwellings unit kitchens, sinks that are adjustable to variable heights, 29 inches (737 mm)
minimum and 36 inches (914 mm) maximum, shall be permitted where rough-in plumbing permits
connections of supply and drain pipes for sinks mounted at the height of 29 inches (737 mm). -
ANSWER☑️⭐-What is the maximum height of an accessible sink in a commercial building?
C) Six-foot level - ANSWER☑️⭐-Of the following, the best tool for door jamb installations is:
A) T-square
B) Eight-foot level
C) Six-foot level
D) Plumb
City - ANSWER☑️⭐-Who gives permission to install a septic system?
1 3/4" - ANSWER☑️⭐-How much spacing is required for anchor bolts from the edge of a stem wall?
A) Place in the room where it will be installed, and let acclimate - ANSWER☑️⭐-When flooring (wood,
laminate, etc.) is delivered to the job, how does the contractor proceed?
A) Place in the room where it will be installed, and let acclimate
B) Start installation immediately
C) Put all the laminate in one place and let acclimate
D) Wait a few hours and start installing
B) All wheels must rotate - ANSWER☑️⭐-Which of the following is incorrect about mobile scaffolds?
Exam: General Building Updates I LATEST EDITION
2025/2026 WITH WELL ELABORATED ANSWERS!!
B) 6 on edge 12 on center - ANSWER☑️⭐-What fastener spacing is required for the corners of oriented
strand board (OSB)?
A) 6 on edge or 8 on center
B) 6 on edge 12 on center
C) 8 on edge 12 on center
D) 8 on edge 16 on center
B) Yes, with a pattern match - ANSWER☑️⭐-Can linoleum be repaired or patched?
A) Never
B) Yes, with a pattern match
C) Yes, just cut small patch to fit
D) No, because it's not repairable
- ANSWER☑️⭐-What is the best tool used to cut a 2 foot diameter hole in plywood?
A) Jigsaw
B) Keyhole saw
C) Mason saw
D) Hacksaw
A) Contractor carrying asbestos certification - ANSWER☑️⭐-Who may work with asbestos?
,A) Contractor carrying asbestos certification
B) General contractor
C) General Engineer
D) Subcontractor
D) 6"x6" with a joint size between 1/8" and 1/4"
The size of the tile is not as important as the joint size. Sanded grouts are typically used for grout joints
that are wider than 1/8". - ANSWER☑️⭐-What tile is better with sanded grout?
A) 4"x4" with a joint size between 3/32" and 1/16"
B) 4"x4" with a joint size between 1/16" and 5/8"
C) 6"x6" with a joint size between 1/16" and 1/8"
D) 6"x6" with a joint size between 1/8" and 1/4"
D) Glue down
Hardwood should never be nailed directly to concrete. Standard strip hardwood is installed by blind
nailing to wood subfloors or sleepers that are set over mastic. If using sleepers don't forget to place a
polyethylene sheet over the sleeper planks. If installing tongue-and-groove hardwood planks over
concrete, you may use mastic (paste-like adhesive). This is known as the glue down method. -
ANSWER☑️⭐-If you have concrete subfloor, how would you install hardwood on top?
A) Nail it but only if there is a vapor barrier under the slab
B) Nail it but only if the hardwood is heavy enough to avoid warping
C) Nail it along with a water-based membrane
D) Glue down
10d - ANSWER☑️⭐-When connecting a rafter with collar ties, what nails are used?
, 34"
According to the California Building Code, lavatories and sinks shall be installed with the front of the
higher of the rim or counter surface 34 inches (864 mm) maximum above the finished floor. In
residential dwellings unit kitchens, sinks that are adjustable to variable heights, 29 inches (737 mm)
minimum and 36 inches (914 mm) maximum, shall be permitted where rough-in plumbing permits
connections of supply and drain pipes for sinks mounted at the height of 29 inches (737 mm). -
ANSWER☑️⭐-What is the maximum height of an accessible sink in a commercial building?
C) Six-foot level - ANSWER☑️⭐-Of the following, the best tool for door jamb installations is:
A) T-square
B) Eight-foot level
C) Six-foot level
D) Plumb
City - ANSWER☑️⭐-Who gives permission to install a septic system?
1 3/4" - ANSWER☑️⭐-How much spacing is required for anchor bolts from the edge of a stem wall?
A) Place in the room where it will be installed, and let acclimate - ANSWER☑️⭐-When flooring (wood,
laminate, etc.) is delivered to the job, how does the contractor proceed?
A) Place in the room where it will be installed, and let acclimate
B) Start installation immediately
C) Put all the laminate in one place and let acclimate
D) Wait a few hours and start installing
B) All wheels must rotate - ANSWER☑️⭐-Which of the following is incorrect about mobile scaffolds?
