CSLB B FINAL STUDY GUIDE 2026
COMPLETE QUESTIONS AND ANSWERS.
⫸ how many board feet do you need for a wall 20' long with 2x4 studs 8
feet high spaced at 16 o.c.? Ans- Step 1: convert wall length and stud
height into inches, by multiplying length by 12.
wall: 20'x12=240"
stud: 8'x12=96"
step 2: divide wall length by the spacing of the studs
240"/16"= 15 studs + 1 starter= 16 studs total
step 3: figure out board feet
board feet= thickness in inches x width in inches x length in inches /
144.
2"x4"x96"/144=5.33 board feet per stud.
step 4: multiply board feet by number of studs
5.33x16=85.28 board feet.
⫸ which of the following is a low slope roof system. Ans- modified
bitumen; can be applied to a slope no less than 1/4:12
⫸ the slope of a roof is the sum of the ___ divided by the ____. Ans-
rise;run
,⫸ calculate the total cost of trusses needed for a new framing project,
where a gable roof is 50' long, each truss is spaced every 24" and the
price of each truss is $80. Ans- 2080
⫸ what is a permanent or well-known elevation reference point? Ans-
benchmark
⫸ in a L shaped Kitchen, two parallel lines are 24' each and you are told
that the remaining lines are 12' each. to install a hardwood floor, what
area are you covering? Ans- 432
⫸ a brick wall has a total of 44 courses. if 3 bricks and 3 mortar joints
equal 8", then how hieght is the wall. Ans- 10 feet
⫸ how many square feet is found in a single roofing square of
composition shingles. Ans- 100 square feet
⫸ charging valve. Ans-
⫸ how many bundles of 30-year asphalt shingles are in a square of
roofing. Ans- 3 bundles
, ⫸ who is finally responsible for an approved set of plans. Ans-
contractor
⫸ the inverter requires minimum voltage unput of 350 volts, how many
48-volt modules need to be connected in a seires configuration to meet
the minimum voltage input? Ans- in a series configuration, the sum of
voltage all all individual moduels will equal to the total voltage output.
divide voltage requirement by the voltage that is generated by each
module. 350/48=7.29
⫸ what is the sf of a gable 12 ft wide and 6 ft high. Ans- 36 sqft height
xbase/2
⫸ which plan from a set of blueprints will give the true measurement of
a rake. Ans- elevation plan
⫸ the job requires 28 construction squares for siding. how many sf of
siding do you need to buy? Ans- 2800; 100 square feet in each
construction square.
⫸ a 1/6 roof pitch is equal to a ___ slope? Ans- 4/12; the pitch is the
sum of the rise divided by the span. the slope is the sum of the rise
divided by the run
COMPLETE QUESTIONS AND ANSWERS.
⫸ how many board feet do you need for a wall 20' long with 2x4 studs 8
feet high spaced at 16 o.c.? Ans- Step 1: convert wall length and stud
height into inches, by multiplying length by 12.
wall: 20'x12=240"
stud: 8'x12=96"
step 2: divide wall length by the spacing of the studs
240"/16"= 15 studs + 1 starter= 16 studs total
step 3: figure out board feet
board feet= thickness in inches x width in inches x length in inches /
144.
2"x4"x96"/144=5.33 board feet per stud.
step 4: multiply board feet by number of studs
5.33x16=85.28 board feet.
⫸ which of the following is a low slope roof system. Ans- modified
bitumen; can be applied to a slope no less than 1/4:12
⫸ the slope of a roof is the sum of the ___ divided by the ____. Ans-
rise;run
,⫸ calculate the total cost of trusses needed for a new framing project,
where a gable roof is 50' long, each truss is spaced every 24" and the
price of each truss is $80. Ans- 2080
⫸ what is a permanent or well-known elevation reference point? Ans-
benchmark
⫸ in a L shaped Kitchen, two parallel lines are 24' each and you are told
that the remaining lines are 12' each. to install a hardwood floor, what
area are you covering? Ans- 432
⫸ a brick wall has a total of 44 courses. if 3 bricks and 3 mortar joints
equal 8", then how hieght is the wall. Ans- 10 feet
⫸ how many square feet is found in a single roofing square of
composition shingles. Ans- 100 square feet
⫸ charging valve. Ans-
⫸ how many bundles of 30-year asphalt shingles are in a square of
roofing. Ans- 3 bundles
, ⫸ who is finally responsible for an approved set of plans. Ans-
contractor
⫸ the inverter requires minimum voltage unput of 350 volts, how many
48-volt modules need to be connected in a seires configuration to meet
the minimum voltage input? Ans- in a series configuration, the sum of
voltage all all individual moduels will equal to the total voltage output.
divide voltage requirement by the voltage that is generated by each
module. 350/48=7.29
⫸ what is the sf of a gable 12 ft wide and 6 ft high. Ans- 36 sqft height
xbase/2
⫸ which plan from a set of blueprints will give the true measurement of
a rake. Ans- elevation plan
⫸ the job requires 28 construction squares for siding. how many sf of
siding do you need to buy? Ans- 2800; 100 square feet in each
construction square.
⫸ a 1/6 roof pitch is equal to a ___ slope? Ans- 4/12; the pitch is the
sum of the rise divided by the span. the slope is the sum of the rise
divided by the run
