CSLB B GENERAL QUESTIONS AND ANSWRERS 100% PASS

CSLB B GENERAL QUESTIONS AND ANSWRERS 100% PASS 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 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 moldings what is installed between the sill plate and the foundation sill sealer when applying asphalt shingles on a slope less than 4:12, what form of underlayment is required tow layers of #15 LB asphalt saturated felt TPO, PVC, EPDM are all classifed as single-ply membranes; low slope roofing systems; class A fire rated studs are always doubled when for any door openings sheathing comprised of multiple wood strabd layers, glued, aligned perpendicular to each other and compressed together is a definition of oriented strand board obs structural wood panel used as an alternative to laminated plywood sheathing. less expensive and superior notching and/or drilling requirements for timber beams holes should be at least 2 inches from edge of beam and not more than 1/3 of beam height in diameter forces that cause the metal roof panels to move down slope, such as snow load and the weight of the metal panel roof system under gravity is called drag load in geographical areas designated as high wind zone and the mean roof height is higher than 25 feet______ must be used at ridge, eave and gable overhang locations 8 penny ring shanked nails if using plywood or OSB for braced wall panels, what is the thickness requirment if studs are spaced 24" o.c. 3/8" or 5/16" for 16" stud spacing to minimize breakage when walking on a tile roof, one should limit foot traffic to the bottom 3 inches of the tile; caution; feet parallel to ridge required nailing pattern when splicing top plates 4x16d each side of the splice hold downs are usually set into the foundation or pad. where else between floors specific info about shear walls, such as type of sheathing and nailing can usually be found on the building plans, abbervation "6W4" would mean OSB with edge nailing 4"o.c. and field 6" o.c. proper installation of roof pipe and vent penetration base flashing should consist of weave shingles under the lower end of the base flashing and over the upper portion of the base flashing drilling I-joists for utilities should follow suppliers specifications and more than one hole is allowed is they are separated by a distance of more than twice the diamiter of the largest hole built up roofing hop mop, cap sheet, tar and gravel fire blocking from 2x material will provide how much fire blocking 1 hour when building a deck, it may be necessary to use blocking between joist blocking is required at the begining of any overhang for u shaped kitchens what is the min clearance requirement between all opposing base cabinets, counter tops, or walls 60 inches when running utilities through stud walls it may be necessary to bore holes through studs. if the size of the hole is more than 40% of the depth of the stud then it is allowed if the studs are doubled and the hole is less than 60% of the width when attaching boards to a deck it is important to space boards at least 1/8th inch connection between a rafter and a double top plate requires 10d nails max height for laterally unsupported 2x4 inch non-bearing wall stud 14' when building decks with a beam and joist design, it is allowed to splice beam if the splice is over a post max height for a laterally unsupported 2x4 inch bearing wall stud 10' max spacing of 2x4 inch studs on a 1 story house 24" o.c. when are studs doubled in load bearing walls with hole exceeding 40% of the stud depth tool used to cut 2-inch diameter into lumber hole saw in some cases nail performance can be improved by driving it at an angle this can improve withdrawal resistance usual spacing for cripples same as studs single-ply membrane roofing system that uses polymer-based synthetic material in flexible sheet or liquid form as an alternative to traditional built-up roofing in general it is permissible to cantilever non-load-bearing floor joists without engineering, if the cantilever does not exceed not more than 4x the joist height built up roof multi-layer of roof felt laminated with asphalt bitumen graded lumber is marked with an indication of moisture content; which is the driest designation MC-15 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 When floor joists are load bearing, they should not be cantilevered more than 1x depth of joist What is a contouring pipe flashing? A malleable base flashing, such as lead or soft aluminum, used to form over the surface of medium to high profile tile What tool is used to successfully cut perpendicular to the grain? m What is an interlocking tile? Tiles designed with over-lapping ribs and grooves allowing adjacent tiles to be interlocked Tiles that are designed to bond one to another to create a water shed Tiles that utilize over-lapping bonding in a horizontal or vertical fashion When raising a framed wall into vertical, what would be an acceptable variation from vertical for an 8 foot high wall? 1/2 inch How much clearance is needed between the ground and wood siding? 6 inches When nailing plywood or oriented strand board (OSB) roof sheathing to wall framing, what is the required nail spacing? Every 6 inches on edges and 12 inches everywhere else Why do you need to double-up on a top plate? Interrupt ceiling membrane for fire-resistance Double top plates are best nailed together with: 16d 16" o.c. When nailing sheathing to framed walls, the nail pattern will vary with the spacing of the studs. If the studs are spaced further apart, then the nailing pattern will be: The distance between nails will need to be proportionally closer Next Question What is the purpose of a step flashing? To shed water away from the structure at roof to wall transitions Bracing lines: Will always be parallel When supported by cold steel framed walls, how should cold steel floor framing be installed? In-line with load-bearing studs How would diagonal bracing with steel straps or 1x4 lumber be used? Between 45˚ and 60˚ to vertical. Next Question Tile roofing may be applied on roof slopes that are; 2-1/2:12 or greater What is an architectural shingle? An asphalt strip shingle laminated with additional asphalt composition components to create a heavier dimensional appearance When framing a deck, it is important to use the right fasteners. 2x decking should be attached to each joist with: 2x 8d nails2x #8 deck screws Engineered floors trusses and I-frames should: Never be notched What is radiant barrier sheathing? A solid panel sheathing with a reflective component on both sides Solid panel sheathing with a reflective component on one side A low emissivity product used to reduce energy loss 'Mod-bit' and 'torch down' are both common roofing terms for; Modified Bitumen When wood shingles are placed over wood spaced sheathing, the sheathing shall be; Not less than 1" x 4" nominal dimension and spaced on centers, equal to shingle exposure What are bracing lines? Imaginary lines across a building used to line up structural bracing elements. Shear strength of a nail is dependent on various factors including diameter, composition, and: The condition of wood members What kind of nails should be used for plywood and OSB panels in braced wall panels construction? 8d common For pass through kitchens, what is the minimum clearance required between the opposing base cabinets, countertops, appliances, or walls within kitchen work area? 40 inches ` What is the correct procedure order for applying stucco to sheathed wooden walls? Scratch coat, brown coat, and finish coat What is the minimum headroom requirement when accessing an attic? 30" When framing for stairs it may be necessary to check that minimum clearances are maintained. Minimum height clearance for stairs to ceiling is: 80 inches A roof frame component that is pre-fabricated, consisting of multiple members fastened and bound together to form a pre-calculated, load bearing roof support is called an_________. truss When exterior walls meet usually a post will be formed by the use of studs to connect walls together and provide nailing for the sheathing and interior wall panels. Otherwise, when two framed walls meet: There must be at least two studs A metal roof panel requiring a solid or closely spaced substrate and relying on a positive slope to shed rain water is called: Architectural metal roof panel When framing walls, blocking may be required. The most important is "fire-blocking", usually in vertical walls. What is the minimum requirement? every 10 feet What is the maximum spacing of 3 x 4 inch studs on a 2 story house? 24" o. c. Allowable joist spans for a decks can be found in commonly available charts. What would normally be an allowable over-hang? 1/4 of allowable span If using plywood or OSB for braced wall panels, what is the thickness requirement if studs are spaced 16" o. c.? 5/16 Grade designations indicate the recommended use of lumber. Which grade would you chose for building trusses? Structural light framing No: 1 When sheathing a roof with rafters laid out at 48 inches on center, the minimum required thickness of the lumber sheathing is ________ tongue and groove. 1-1/2 inch For drainage purposes, built-up and single-ply roof systems shall not be applied on roof slopes less than; ¼ :12 What is the maximum spacing of 2 x 4 inch studs on a nonbearing wall for a 2 story house? 24 According to OSHA, the minimum width of scaffold platform or walkways is _____. 18 inches Scaffolding should be kept a minimum of ____ feet away from high voltage power lines 10 When working on a high-rise building, what is the first thing that you need to do if you are required to use a tower crane to move heavy equipment around the jobsite? Check with Cal/OSHA At the bottom of an accessible ramp, the landing is 60 inches wide and ____ inches running in the direction of the ramp. Assume the door swings onto the landing. 72 inches Severe muscle spasms exhibited during hot temperatures could be a symptom of? heat cramps The maximum distance between the scaffold deck edge and the face of the building is _______. 14 inches At the top of an accessible ramp, the landing is 60 inches wide and ____ inches running in the direction of the ramp (door swings onto the landing). 60 inches Which of the following fire extinguishers is appropriate for extinguishing a kettle fire? dry chemical Which of the following mineral types of asbestos are most prevalent on roofing projects? Chrysotile A crane, its line or load being hoisted must not be closer than ______ to an energized power line with a voltage rating of 350 Kv. 20 feet Which of the following statements is untrue about scaffolding safety? All levels need to be completely covered with Plywood What is the maximum vertical clearance that a pool enclosure can be from the ground? 2 inches Before starting crane operations on any project, the roofing contractor or prime contractor, regardless of crane ownership, must ____________. Perform a hazard assessment Which of the following conditions are a symptom of heat exhaustion? Cool moist skin (clammy) When cranes or other material hoisting equipment are operational on the jobsite, the ___________ must be available to rig any hoisted load when workers are with the fall zone of an active lift. Qualified Rigger When erecting multi-levels, the scaffolding must be properly secured to the building at _____ foot intervals vertically and at _____ intervals horizontally. 26,30 A minimum of _______10-B rated fire extinguisher(s) should be placed no less than ________ from the kettle and no less than ______ from the propane cylinders? Two, 30 feet, 50 feet A crane, its line or load being hoisted must not be closer than ______ to an energized power line with a voltage rating of 350 Kv. 20 feet If a truck is parked on the road and lumber must be removed from the trailer, which of the following is required? cones Modified bitumen should never be torched to _______________; combustible decks Side rails of portable extension ladders must extend ______ above the landing. 3' What size and color of traffic cone that can be used during the day in the residential construction zone? 18 inches, bright orange Which is used on a swimming pool enclosure? Spring-assisted hinge Which of the following characteristics applies to dry-set mortar? Can be used as thin as 3/32 to 1/8 inches Has excellent water and impact resistance Does not require the soaking of tile What is the average psi for drip irrigation? 10-25 From a landscaping perspective, which of the following is the largest benefit in planting an evergreen tree? shade When installing drip irrigation in a landscape, how would you measure the flow rate? Gallons per hour Of the following answers, how long does carpet last with average residential use? 7-10 years Why would installing a stone floor be more of a challenge then installing carpet flooring? Stone floors must be sealed and carpet doesn't Stone floors are more difficult to obtain than carpet Stone floors are more difficult to repair than carpet What are the 2 main types of tile sealers? Penetrating and surface When preparing a subfloor for carpet or resilient flooring, what type of cement is recommended for patchwork? portland Where is tempered glass stamped? bottom right Masonry blocks are also referred to as: grey blocks Which of the following is a benefit that mulches can add to a landscape? Prevent erosion Next Question How should repairs be made on linoleum floors if the damage spans more than half a foot? Cut a square piece of linoleum and ensure a pattern match What is the purpose of a margin trowel? To spread thin set over small surfaces What is the minimum height and width of the escape or rescue window? 20" wide; 41" high Which type of soil can support the most amount of weight? Type A