CSLB B GENERAL
PTICH
rise/span
what size of a circuit breaker can be installed on a line with 7 outlets 14 AWG wire?
15 amp; according to code, the conductor ampacity rating for a 14 gauge wire is 15 amps. for 12 gauges wire is 20 amps. the number of outlets does not determine the size of circu...
cslb b general ptich risespan what size of a circuit breaker can be installed on a line with 7 outlets 14 awg wire 15 amp according to code
the conductor ampacity rating for a 14 gauge wire is 15
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CSLB B GENERAL
PTICH
rise/span
what size of a circuit breaker can be installed on a line with 7 outlets 14 AWG
wire?
15 amp; according to code, the conductor ampacity rating for a 14 gauge wire is 15
amps. for 12 gauges wire is 20 amps. the number of outlets does not determine the size
of circuit breaker.
how many roof squares are in the roof measuring 45' by 50'?
22.5; (45x50) / 100 (roofing squares made of 10'x10').
total drop for a 120' pipe with a 2% slope?
2'5" = 120x2%=2.4
how many 4"x4" tiles do you need to tile 30"x60" shower floor and three walls 60"
high with 1/4" grout? allow 10% for waste.
step 1: calculate total area: shower pan: 30"x60" = 1800 square inches. two small walls
2 @( 30"x60")= 3600 square inches. back wall= 60"x60"=3600
total= 9000 square inches.
step 2: calculate tile coverage including grout. 4 1/4" x4 1/4" = 18.0625
step 3: divide 9000/18.0625 = 499 tiles
step 4: add 10%
499x.10= 50 tiles
549
the load area of skylight is equal to
inside dimension of a deck mounted skylight; inside area of the skylight curb; rough
opening in the roof.
how many kWh will be consumed by a 500w lightbulb running for 3 hours?
1.5 kWh. step one solve for total watt-hours= 500w x 3=1500
step 2 convert: 1 kilowatt= 1000 watt
1500/1000=1.5
how many board feet do you need for a wall 20' long with 2x4 studs 8 feet high
spaced at 16 o.c.?
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
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 ____
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.
2080
what is a permanent or well-known elevation reference point?
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?
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
10 feet
how many square feet is found in a single roofing square of composition shingles
100 square feet
charging valve
how many bundles of 30-year asphalt shingles are in a square of roofing
3 bundles
who is finally responsible for an approved set of plans
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?
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
36 sqft height xbase/2
which plan from a set of blueprints will give the true measurement of a rake
elevation plan
the job requires 28 construction squares for siding. how many sf of siding do you
need to buy?
2800; 100 square feet in each construction square.
a 1/6 roof pitch is equal to a ___ slope?
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
the roof pitch is 6/24, what is the rise given that the run is 17 feet?
8.5; step 1 find the span 17x2; find the actual pitch 6/24=x/34
how many 8"x8"x16" blocks are required for a wall 8 feet high and 60 feet long
540; find area of wall in inches 8x12=96 60x12=720 area: 96x720=69120
height and length of block 8x16=128
divide 69120/128
you are bidding on a project that requires 86 board feet. the price per board foot
is $1.20 with a sales tax of 8% what would the total cost for 86 board feet?
111
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