CA BRANCH 3 EXAMS SCRIPT 2026/2027 QUESTIONS AND
ANSWERS GRADED A+
✔✔The height of a riser is called the unit rise, so the sum of all risers would be the
_________________ - ✔✔Total Rise
✔✔You must have at least how much head room? - ✔✔6 foot, 8 inches
✔✔The width of a tread is called the unit run, so the sum of all the treads would be the
_______________ - ✔✔Total Run
✔✔What is the maximum amount of difference allowed between the heights of risers? -
✔✔1/4 inch
✔✔The minimum size of a stairway landing is ____________ - ✔✔4 foot x 6 foot
✔✔Scaffolding must be capable of supporting _____ times the maximum load during
normal use? - ✔✔4 times
✔✔Which of these would not be considered to be a "light-trade"?
a)Painter
b)Mason
c)Carpenter
d)Plasterer - ✔✔b)Mason
✔✔Wood scaffolding must be made of which material? - ✔✔Select Lumber
✔✔Barrels are approved for use as scaffold supports? True or False - ✔✔False
✔✔Scaffolds over 75 feet in height must be approved by the Division of Industrial
Safety? - ✔✔True
✔✔For light trades scaffolding up to 32 feet high, the uprights must be made of which
material? - ✔✔2x4 or better
✔✔For light trades scaffolding, the platforms must be made of which material? -
✔✔2x10 or better
✔✔For light trades scaffolding over 32 feet, the bottom 32 feet must not be less than
__________? - ✔✔3x4
, ✔✔Platforms on light trades scaffolding, must be no less than 20 inches wide? True or
False - ✔✔True
✔✔The uprights on heavy trades scaffolding up to 32 feet, must be which of the
following? - ✔✔4x4 or better
✔✔Platforms on heavy trades scaffolding, must be no less than which of the following?
- ✔✔40 inches wide
✔✔For heavy trades scaffolding, the platforms must be mad of which material? -
✔✔2x10 or better
✔✔The bottom 32 feet on heavy trades scaffolding above 32 feet, must be which of the
following? - ✔✔4x6 or better
✔✔For light trades scaffolding over 32 feet, the top 32 feet must not be less than
___________? - ✔✔2x4
✔✔For heavy trades scaffolding over 32 feet, the top 32 feet must not be less than? -
✔✔4x4
✔✔Railings must be made of 1x6 or 2x4 and nailed to uprights between 42" and 45"
above the platform? True or False? - ✔✔True
✔✔Wheelbarrow ramps shall be how wide? - ✔✔2 1/2 feet
✔✔Ladders should extend 3 feet above the edge of the
roof? True or False? - ✔✔True
✔✔Trenches no more than 10 foot deep, up to 6 foot wide, must be braced by
horizontal timbers which are? - ✔✔4x4
✔✔If you build a ladder on site, it must have it rungs blocked between rungs. Or, its
rungs must suck 1/2 inch deep in the rails of 2x4 or larger? True or False? - ✔✔True
✔✔To improve appearance, you may paint your ladder after you build it? True or False?
- ✔✔False
✔✔Inclined runways for workers shall be how wide? - ✔✔20 inches
✔✔Materials excavated from trenches must not be placed nearer than ______ from the
edge of the trench? - ✔✔2 foot
ANSWERS GRADED A+
✔✔The height of a riser is called the unit rise, so the sum of all risers would be the
_________________ - ✔✔Total Rise
✔✔You must have at least how much head room? - ✔✔6 foot, 8 inches
✔✔The width of a tread is called the unit run, so the sum of all the treads would be the
_______________ - ✔✔Total Run
✔✔What is the maximum amount of difference allowed between the heights of risers? -
✔✔1/4 inch
✔✔The minimum size of a stairway landing is ____________ - ✔✔4 foot x 6 foot
✔✔Scaffolding must be capable of supporting _____ times the maximum load during
normal use? - ✔✔4 times
✔✔Which of these would not be considered to be a "light-trade"?
a)Painter
b)Mason
c)Carpenter
d)Plasterer - ✔✔b)Mason
✔✔Wood scaffolding must be made of which material? - ✔✔Select Lumber
✔✔Barrels are approved for use as scaffold supports? True or False - ✔✔False
✔✔Scaffolds over 75 feet in height must be approved by the Division of Industrial
Safety? - ✔✔True
✔✔For light trades scaffolding up to 32 feet high, the uprights must be made of which
material? - ✔✔2x4 or better
✔✔For light trades scaffolding, the platforms must be made of which material? -
✔✔2x10 or better
✔✔For light trades scaffolding over 32 feet, the bottom 32 feet must not be less than
__________? - ✔✔3x4
, ✔✔Platforms on light trades scaffolding, must be no less than 20 inches wide? True or
False - ✔✔True
✔✔The uprights on heavy trades scaffolding up to 32 feet, must be which of the
following? - ✔✔4x4 or better
✔✔Platforms on heavy trades scaffolding, must be no less than which of the following?
- ✔✔40 inches wide
✔✔For heavy trades scaffolding, the platforms must be mad of which material? -
✔✔2x10 or better
✔✔The bottom 32 feet on heavy trades scaffolding above 32 feet, must be which of the
following? - ✔✔4x6 or better
✔✔For light trades scaffolding over 32 feet, the top 32 feet must not be less than
___________? - ✔✔2x4
✔✔For heavy trades scaffolding over 32 feet, the top 32 feet must not be less than? -
✔✔4x4
✔✔Railings must be made of 1x6 or 2x4 and nailed to uprights between 42" and 45"
above the platform? True or False? - ✔✔True
✔✔Wheelbarrow ramps shall be how wide? - ✔✔2 1/2 feet
✔✔Ladders should extend 3 feet above the edge of the
roof? True or False? - ✔✔True
✔✔Trenches no more than 10 foot deep, up to 6 foot wide, must be braced by
horizontal timbers which are? - ✔✔4x4
✔✔If you build a ladder on site, it must have it rungs blocked between rungs. Or, its
rungs must suck 1/2 inch deep in the rails of 2x4 or larger? True or False? - ✔✔True
✔✔To improve appearance, you may paint your ladder after you build it? True or False?
- ✔✔False
✔✔Inclined runways for workers shall be how wide? - ✔✔20 inches
✔✔Materials excavated from trenches must not be placed nearer than ______ from the
edge of the trench? - ✔✔2 foot
