CSLB B EXAMS EXAM PREP QUESTIONS AND
SOLUTIONS 2026 TESTED AND VERIFIED
◉ 4X10d nails. Answer: When nailing a continuous header to the
studs, best practice is to use:
◉ Moisture content, Grade, Species. Answer: Graded lumber is
stamped with information about the lumber. What is included?
◉ In load bearing walls with holes exceeding 40% of the stud depth..
Answer: When are studs doubled?
◉ 5/8 inch. Answer: A solid plywood roof deck at 3/12 pitch or
greater, receiving asphalt shingles and having rafters laid out 24
inches on center, should have a minimum plywood sheathing
thickness of ______.
◉ OSB with edge nailing 4" o.c. and field 6 "o.c.. Answer: Specific
information about shear walls, such a type of sheathing and nailing,
can usually be found on the building plans. Abbreviations such as
"6W4" are common, which would mean:
◉ S-GRN: "Surfaced Green" Not dried, moisture content over 19%.S-
DRY: "Surfaced Dry" Air dried to a moisture content less than 19%.
,KD: "Kiln Dry" Dried in a heated kiln to a moisture content less than
19%.MC 15: "Moisture Content 15%" Dried to a moisture content of
15% or less.HT: "Heat Treated" Heated to at least 133° Fahrenheit
for 30 minutes at the board's core to kill any insects present in the
wood.. Answer: Graded lumber is marked with an indication of
moisture content; which is the driest designation?
◉ To shed water away from the structure at roof to wall transitions
(Step flashing are interwoven between each course of shingles and
protect the transition from water intrusion by creating a water shed
aka shingle effect.
Next Question
Leave Feedback). Answer: What is the purpose of a step flashing?
◉ A) Will always be parallel. Answer: Bracing lines:
A) Will always be parallel
B) Should intersect at 90˚
C) Always run in the same direction
D) Can be added at any time
◉ D) Weave shingles under the lower end of the base flashing and
over the upper portion of the base flashing
,(In re-roof overlays, many roofers will conceal the base flashing
under the shingles and apply mastic at the transition. While this
method is allowable for overlays, it is not recommended due to the
inherent likelihood of moisture influence under the shingles at these
locations.). Answer: Proper installation of roof pipe and vent
penetration base flashing should consist of:
A) Apply shingles so as to completely conceal base flashing
B) Apply shingles under the base flashing and seal perimeter of base
flashing with roof cement
C) Seal pipe/vent penetration with roof cement
D) Weave shingles under the lower end of the base flashing and over
the upper portion of the base flashing
◉ A) Structural light framing No: 1. Answer: Grade designations
indicate the recommended use of lumber. Which grade would you
chose for building trusses?
A) Structural light framing No: 1
B) Structural light framing No: 3
C) Light framing: Construction
D) Light framing: Standard
, ◉ 18". Answer: In crawlspace, if the floor is built out of non-pressure
treated wood, how high is the floor joist from the soil?
◉ A) Blocking is required at the beginning of any overhang. Answer:
When building a deck, it may be necessary to use blocking between
joists.
A) Blocking is required at the beginning of any overhang
B) Blocking is required every 10 feet
C) Blocking is required if joists are 24" o.c. or more
D) Blocking is required if joists are 8"x or larger
◉ 24" o. c.. Answer: What is the maximum spacing of 2 x 4 inch studs
on a 1 story house?
◉ B) Not be notched. Answer: Engineered floor trusses and I-Joists
should:
A) Always be kept in low humidity
B) Not be notched
C) Purchased in batches
D) Always be approved by an engineer
SOLUTIONS 2026 TESTED AND VERIFIED
◉ 4X10d nails. Answer: When nailing a continuous header to the
studs, best practice is to use:
◉ Moisture content, Grade, Species. Answer: Graded lumber is
stamped with information about the lumber. What is included?
◉ In load bearing walls with holes exceeding 40% of the stud depth..
Answer: When are studs doubled?
◉ 5/8 inch. Answer: A solid plywood roof deck at 3/12 pitch or
greater, receiving asphalt shingles and having rafters laid out 24
inches on center, should have a minimum plywood sheathing
thickness of ______.
◉ OSB with edge nailing 4" o.c. and field 6 "o.c.. Answer: Specific
information about shear walls, such a type of sheathing and nailing,
can usually be found on the building plans. Abbreviations such as
"6W4" are common, which would mean:
◉ S-GRN: "Surfaced Green" Not dried, moisture content over 19%.S-
DRY: "Surfaced Dry" Air dried to a moisture content less than 19%.
,KD: "Kiln Dry" Dried in a heated kiln to a moisture content less than
19%.MC 15: "Moisture Content 15%" Dried to a moisture content of
15% or less.HT: "Heat Treated" Heated to at least 133° Fahrenheit
for 30 minutes at the board's core to kill any insects present in the
wood.. Answer: Graded lumber is marked with an indication of
moisture content; which is the driest designation?
◉ To shed water away from the structure at roof to wall transitions
(Step flashing are interwoven between each course of shingles and
protect the transition from water intrusion by creating a water shed
aka shingle effect.
Next Question
Leave Feedback). Answer: What is the purpose of a step flashing?
◉ A) Will always be parallel. Answer: Bracing lines:
A) Will always be parallel
B) Should intersect at 90˚
C) Always run in the same direction
D) Can be added at any time
◉ D) Weave shingles under the lower end of the base flashing and
over the upper portion of the base flashing
,(In re-roof overlays, many roofers will conceal the base flashing
under the shingles and apply mastic at the transition. While this
method is allowable for overlays, it is not recommended due to the
inherent likelihood of moisture influence under the shingles at these
locations.). Answer: Proper installation of roof pipe and vent
penetration base flashing should consist of:
A) Apply shingles so as to completely conceal base flashing
B) Apply shingles under the base flashing and seal perimeter of base
flashing with roof cement
C) Seal pipe/vent penetration with roof cement
D) Weave shingles under the lower end of the base flashing and over
the upper portion of the base flashing
◉ A) Structural light framing No: 1. Answer: Grade designations
indicate the recommended use of lumber. Which grade would you
chose for building trusses?
A) Structural light framing No: 1
B) Structural light framing No: 3
C) Light framing: Construction
D) Light framing: Standard
, ◉ 18". Answer: In crawlspace, if the floor is built out of non-pressure
treated wood, how high is the floor joist from the soil?
◉ A) Blocking is required at the beginning of any overhang. Answer:
When building a deck, it may be necessary to use blocking between
joists.
A) Blocking is required at the beginning of any overhang
B) Blocking is required every 10 feet
C) Blocking is required if joists are 24" o.c. or more
D) Blocking is required if joists are 8"x or larger
◉ 24" o. c.. Answer: What is the maximum spacing of 2 x 4 inch studs
on a 1 story house?
◉ B) Not be notched. Answer: Engineered floor trusses and I-Joists
should:
A) Always be kept in low humidity
B) Not be notched
C) Purchased in batches
D) Always be approved by an engineer
