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
... [Show More] 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
what is the minimum required cross-sectional area of the flue for a 14 feet tall fireplace with an opening 20"x24"?
60; 20x24 =480 480 x 1/8= 60 sq in
how many cubic yards of concrete is required for a 4" slab with the circumference of 25 feet?
3/4 cubic yards
c=25
diameter= 25/3.14=7.96
radius= diameter/2= 3.98
area of circle 3.14xrxr
49.74
multiply area by depth
49.74x.333= 16.56
convert into years
16.56 / 27 = .61
how is leveling performed
establish a benchmark and use a level
how many cubic yards of concrete do you need for a 4" slab with an area of 20'x40'.
10 cu yds; solve the total volume of the slab of concrete in cubic feet. then divide the volume by 27.
in most cases where will brace walls be placed?
at each end of brace lines
wood structural paneling would normally be nailed with
8d nails at 6"o.c. at edges and 12" o.c. in field
what type of equipment is used to remove nails
sawzall
toenailing is an important technique used in framing. best results are achieved when?
using framing nails, entering top piece at a height equivalent to 1/3 the height of the nail.
per every 150 square foot on enclosed roof cavity____ of ventilation surface must be provided
1 square foot
when two opposing roof slopes descend or merge at a horizontal trough within the roof deck, a ____ is formed.
hog valley
standard interlayment used for wood shake roof systems over 4:12 pitch consists of
#30 LB asphalt impregnated organic felt
when applying sheathing horizontally
corners should be offset; small gap between sheets; edges of sheets should be slightly set back from wall corners
when can floor joists be spaced more than 16" o.c. rest on a wall with studs at 24" o.c.?
Joists must not be more than 5 inches from a supporting stud
I-frames can add to the final cost of a project but have the advantage of
longer spans
a solid plywood roof deck at 3:12 pitch or greater, recieving asphalt shingles and having rafters laid out 16 inches on center, should have a minimum plywood sheathing thickness of ____
15/32 inch
when fabricating a beam for use on a deck from 2x material. boards should be connected with:
threaded 8d nails or #8 screws. wood decking shall be attached to each supporting member with not less than 2 8d threaded nails or 2 no 8 wood screws
when installing asphalt, shingles, shingle fasteners should be placed as follows
below the seal strip and above the exposure line
graded lumber is stamped with information about the lumber, which is most important
moisture content; grade; species
floor trusses are often engineered to require job specifications. this means
installation should be in the correct sequence and orientation
cripple wall is considered a story when it is ___ tall
14 inches
advantages of glulam beam
they comply with building code
maximum spacing of 2x6 inch studs on load bearing wall for 2 story house
24" o.c.
out rigger
installed perpendicular to the common rafters and span a min of two rafters before extending over the gable wall. support the barge rater and sheathing at the overhang of a gable roof.
ends of deck joists require some form of lateral resistance to prevent rotation. where lateral restraint is provided by rim joists, they shall be secured to the end of each joist with not fewer than:
three 10d nails or three 10 d screws
a metal roof panel which can be installed over spaced or open frame sheathing, not requiring a solid or closely spaced substrate and reying on a positive to shed rain water is called.
structural metal roof panel
what does a weep screed do?
desinged to evacuate water from a stucco wall
why is 1/8" space left between boards on a deck
expansion joint
before attaching sheathing to a framed wall construction you should
ensure the wall is true, square, and braced
when nailing a continuous header to the studs, best practice is to use
4x10d nails
when building a deck that is attached to an adjoining wall it may be necessary to use a ledger board and joist hangers. in this case the ledger board will need to be:
at least as deep as the joist
actual size of 2"x4" stud
1 1/2" x 3 1/2"
when framing walls it is important to think ahead to the work that will follow, for instance, why would you add extra blocking in the outside of a door frame?
for a light switch in the case of the wide [Show Less]