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(001) What is the first step in locating corner stakes for a building? Establish a baseline.
(001) Once the building corners are square, what is the next step taken when preparing a site for concrete? Erect the batterboards and place the building lines.
(001) When must you install bracing on batterboards? If the soil is loose or the stakes are higher than three feet.
(001) In batterboard construction, how do you hold the building lines securely in place? Make a saw kerf in the outside edge of each ledger board.
(001) When excavating around the outside wall planes, how much working space should you allow for form construction? 2 feet
(002) When grade stakes are used between wooden footing forms, what action must you take before the concrete sets? Remove the stakes and fill the holes with concrete.
(002) How do you form any square or rectangular dimensioned slab using metal forms? By letting one form end extend past each corner.
(002) When constructing a footing for a bearing wall, how are the sides held in place with the correct distance maintained between them? With stakes and spreaders.
(002) When using 1-inch lumber for slab forms, at what approximate distance should you drive stakes along the board? 2 feet.
(002) When using 2-inch lumber for slab forms, at what approximate distance should you drive stakes along the board? 4 feet.
(002) How do you reinforce studs that extend over four or five feet when constructing wall forms? Run double wales horizontally.
(002) When constructing a new ramp, you must ensure the ramp’s width is not less than 36 inches.
(003) When specifications require a No. 5 rebar, what is the actual needed? ⅝ inch.
(003) When splicing welded wire fabric, a normal splice made by lapping one full square plus two inches.
(003) When constructing footings and other structural members that are against the ground, how much space should you allow between the steel and ground? 3 inches.
(003) When reinforcing beams, footings, walls and floors, what should be the minimum clear distance between parallel bars? 1 inch or 1⅓ times the largest aggregate particle in the concrete.
(003) When using a pipe sleeve anchor bolt, how do you keep concrete from entering the sleeve? Pack it with a rag or newspaper.
(004) When constructing pavements, sidewalks and reinforced concrete buildings, which type of concrete should you use when it must reach its design strength in about 28 days? Type I.
(004) When constructing large structures where moderate heat of hydration is needed, what type of cement should you use when it must reach its design strength in about 45 days? Type II.
(004) Which type of cement should you use when the concrete must reach its design strength in seven days or less? Type III.
(004) Estimate the amount of sand needed to mix one cubic yard of concrete when specifications call for a 1:2:3 mix using 3-inch course aggregates. 14 cubic feet sand
(004) Estimate the amount of course aggregate needed to mix one cubic yard of concrete when specifications call for a 1:2:3 mix using 3-inch course aggregates. 21 cubic feet. aggregate
(004) When performing a slump test, how should you fill the cone? In three equal layers, each ⅓ the cone volume
(005) When hand-mixing concrete, which of the following procedures is correct? Mix the sand and cement together first, then add the coarse material.
(005) What is the correct sequence for loading the skip of a concrete mixer? The coarse aggregate first, the cement second, and the sand third.
(005) Which of the following concrete joints should you use to separate adjacent structural members to allow differential movement in the vertical plane? Isolation joint.
(005) Which of the following concrete joints should you cut into a concrete slab to create a plane of weakness, which force cracking at the joint? Control joint.
(006) When pouring concrete in layers, how far should you insert an internal vibrator into the previous layer and why? Several inches; to assure and good bond.
(006) You can tell the concrete has been vibrated long enough with an internal vibrator when a thin mortar line appears on the form’s edge.
(006) Which of the following actions is used to the strike off the excess concrete to bring the surface to its proper elevation? Screeding.
(006) You should begin the edging operation as the sheen of water begins to leave the surface.
(006) What action can you take to close hairline cracks (checks) that developed due to a concentration of water and extremely fine aggregates at the surface? Pound the concrete with a hand float before troweling.
(007) When the temperature is at or above 50°F, you should cure concrete for at least how many days? 5 days.
(007) When the temperature is at or above 70°F, you should cure concrete for at least how many days? 3 days.
(007) When using waterproof paper to cure horizontal concrete surfaces, you should lap the adjacent sheets at last how many inches? 12 inches.
(007) When using epoxy cement to repair concrete, what is the minimum thickness you can apply it and still retain good strength without cracking? ⅛ inch.
(008) What type of mortar should you choose for general use work, specifically for below-grade masonry that contacts the earth, such as foundations? Type M.
(008) What is the minimum/maximum time you should mix the mortar when machine mixing? 3 to 5 minutes.
(008) When hand-mixing mortar, what method allows the blending process to take place easier and quicker? Add half the sand, followed by all of the cement and lime, and then the remaining amount of sand.
(008) As a practical guide, you should discard any mortar not used within 2½ hours.
(008) Using Rule 38, estimate approximately how much cement and sand is needed for a 1:4 mix ratio. 7.6 cubic feet of cement; 30.4 cubic feet of sand.
(009) When constructing a concrete masonry wall, what action should you take after you locate the corners? Check the footing or slab for level
(009) How do you chase the bond for a concrete masonry wall? Place the first course of blocks without mortar.
(009) How high should you build the corner leads? Five or six courses.
(009) How should you tool mortar joints on a concrete masonry wall? Tool horizontal joints with a long jointer first, then the vertical joints with an S-shaped jointer.
(009) Which of the following procedures is used to make a Michigan control joint in a concrete masonry wall? Lay half- and full-size tongue and groove blocks.
(009) When installing lintels, what is the minimum amount of bearing that you should provide at each end? 6 inches.
(010) What action can you take to ensure that all the face bricks received at the job site are uniform in quality, size and color? Keep a sample from the first load.
(010) What do you do to bricks if you must lay them in cold weather? Keep them dry and warm.
(010) When laying a brick windowsill, what type of course is used? Rowlock.
(010) To protect the tops of walls and other brickwork exposed to the weather, you should install copings.
(010) When laying the corner leads on a brick wall, the first lead height is determined by how many courses are needed and the bond type.
(010) What size mortar joints should you use when laying brick to produce the strongest and most water-resistant joints? ¼ and ⅜ inch.
(011) What action will usually result in efflorescence disappearing with normal weathering? Stop the source of moisture.
(011) If you must make repairs to mortar joints after the mortar has already hardened (repointing),you must rake or chisel the old mortar joints at least how deep? ½ inch.
(011) Before you insert a replacement brick, you should dampen the new brick and the repair area immediately to keep the mortar from drying too fast.
(011) How should you waterproof outside masonry surfaces below ground level where there’s not much water or where drainage is excellent? Hot asphalt only.
(012) Which tool is used for further straightening after rodding is completed and to level plaster screeds and finish coats? Darby.
(012) Which material can you add to other less workable plaster materials to improve plasticity? Lime putty.
(012) Which of the following accessories are used both as finish casings around openings in plaster walls and as screeds around doors and windows? Casing beads.
(013) What ingredient does the first number in the plaster mix ratio represent? Cementitious material.
(013) What is the usual time needed to mix a batch of plaster to the proper consistency using a mixing machine? 3 to 4 minutes.
(013) To repair a structural crack in plaster, you cut out and remove the loose material to form what shape in the crack? V-shape only.
(014) When selecting ceramic tiles for interior use, which of the following tiles are suitable? Nonvitreous and semivitreous.
(014) When selecting ceramic tile, a class 4 tile suggested use is for all residential, medium commercial and light institutional floor, and wall areas.
(015) How do you repair a badly deteriorated plaster wall before you apply ceramic wall tiles? Remove the old plaster and replaster or cover it with water resistant gypsum wallboard or cement board.
(015) Before installing ceramic tile, apply a prime coat to the wall when you are using the adhesive method.
(015) When installing ceramic tiles around a bathroom sink, place the tiles at least two courses higher than the sink.
(015) When laying ceramic tile, how much clearance should you leave between the tile and the tub for contraction and expansion? ⅛-inch.
(015) When drilling through ceramic wall tile to mount wall fixtures, how can you keep the drill bit from slipping off the smooth tile surface? Place two strips of masking tape (form an “X”) on the tile only.
(016) When installing ceramic floor tile in a bathroom, lay the tile to within what distance of the toilet floor flange? ½ inch.
(016) To attain a strong, stiff, squeak-free floor when installing wood underlayment for ceramic tile, install more fasteners than used with ordinary subfloors.
(016) When planning for mosaic floor tile in a room that is not square, you plan any unnecessary cuts for areas that are less noticeable.
(016) Normally what joint size do you use when laying quarry tile, and how do you maintain the space? ½ inch; with tile spacers.
(016) When using a hammer and cold chisel to break the old tile out for replacement, always start from the center of the tile and work out.
Created by: leocriz50
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