Michigan Builders License Exam with correct answers, Exams of Construction

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Michigan Builders License Exam

Created to serve as a complete, comprehensive code regulating the construction of single-family, two- family and buildings consisting of three or more townhouse units.correct answerIRC (International Residential Code) Administrativecorrect answerFirst 2 chapters of code book are Truecorrect answerPlans or supporting documents are almost always required by the controlling authority prior to issuing a permit. T or F Yescorrect answerDoes the building official have the authority to render interpretations of the code? 8 foot fence.correct answerNone of the following require a permit, EXCEPT: sidewalks and driveways tiling an 8 foot fence playground equipment Falsecorrect answerTables and illustrations are always supported by information found in the written code and footnotes. T or F Live load.correct answerThe amount of evenly distributed weight imposed by inhabitants, goods and removable objects on a floor or roof system is referred to as True.correct answerIf a code requirement is in the book, it is both acceptable and enforceable by the code official. T or F Figures.correct answerIllustrations are typically referred to as

Determine that buildings are built to the minimum enforceable standard.correct answerGenerally speaking, the building official's job is to True.correct answerIt is required that all manufacturer instructions be at the jobsite at the time of inspection. T or F Kitchen.correct answerAll of the following are not considered habitable spaces EXCEPT: bathrooms kitchens storage spaces closets 3.correct answerBathrooms must be provided with an aggregate glazing area no less than _____ square feet, half of which must be openable. 44 inches.correct answerThe maximum height of an egress window above the floor is 5.7 sq ft.correct answerA basement bedroom must have an egress window with a clear opening of at least ______ square feet. 3.correct answerAt least one side-hinged exit door must be in each dwelling unit, and must be _____ feet wide. 30 inches.correct answerA porch more than _____ inches above grade must be provided with 36" guards. 200.correct answerWall and ceiling finishes shall have a flame-spread classification of no more than ______. 7 days.correct answerAccording to code, concrete must reach at least 70% of it's ability within ____________days.

40%.correct answerA stud used for a non-bearing partitions may not be notched more than ____% of the stud width. Additions, alterations, renovation and repairs.correct answerThe Michigan Uniform Energy code applies to new buildings as well as U-factor.correct answer___________ is a measure of how well the window or door assembly conducts heat. The lower the number, the better insulation the assembly will provide. 50%.correct answerEnergy losses from recessed lighting fixtures can often reach ___% of the total thermal loss of a ceiling. R-3.correct answerMichigan requires a minimum thermal resistance of ____________for mechanical system piping. True.correct answerOversized HVAC equipment has a higher initial cost, a higher operating cost, provides less comfort, and shorter life expectancy. T or F Prescriptive Path.correct answer_______ is the compliance route that applies Table 402.1.1 to building envelope components, and is considered the most simple. Area weighted averages.correct answer___________ can be used to satisfy U-factor and SHGC requirements. IC (Insulation Contact)correct answerRecessed lights must be _____ rated. True.correct answerUp to 15 square feet of glazing per dwelling unit is exempted from U-value requirements. T or F Registered design professional.correct answerThe 2009 IECC requires a permanent certificate posted on the electrical distribution panel. The certificate shall be completed by the builder or

State energy code requirements.correct answerOne hurdle contractors face when bidding for an energy efficient project is choosing materials that fit the design, and also meet False.correct answerHistorically significant buildings are not exempt from code changes. T or F R-value Settled thickness Manufacturer namecorrect answerInsulation products (blown and sprayed) must be documented with: March 2011.correct answerThe new Michigan codes took effect in 10.correct answerBelow grade walls are insulated from the top of the basement wall down to _____ below grade, or the basement floor, whichever is less. Area weighted average.correct answerThe _______ is the combined Solar Heat Gain Coefficient of all the glazed fenestration products in the building. Thermal insulation R-values Design criteria Equipment systemscorrect answerPlans and specifications must be detailed in regards to: 2009.correct answerIn Michigan, the residential energy code is based on the _____ IECC, with certain amendments. Air leakage.correct answer___________ is the rate of air infiltration in the presence of a specific pressure differential. Windows Attic access hatches Recessed lightscorrect answerAir leakage is the random movement of air into and out of ________ through cracks and holes.

Table 402.1. 2009 IECCcorrect answerR-values for insulation and fenestration requirements by component can be found in International Energy Conservation Codecorrect answerIECC U-factor and UA alternatives.correct answerThe _____________ compliance method allows for more innovative construction techniques like SIPs or Advanced Framing. 500 sq feetcorrect answerR-30 is permitted in vaulted ceilings, but is limited to True.correct answerFloor insulation must be installed to maintain permanent and continuous contact with the underside of the subfloor decking. T or F 5, 6 and 7.correct answerMichigan falls into climate zones False.correct answerIt is permissible for supply ducts to be run through the framing cavities of a residential building. T or F IC rated (Insulation Contact)correct answer__________ means an electrical fixture has been tested and listed as suitable for installation in a cavity where the fixture may come in contact with insulation. 3%.correct answerAccording to the Dept. of Energy, improved energy codes could reduce CO2 emissions by 300 sq ft.correct answerAttic insulation markers must be installed every _____ square feet. True.correct answerBuildings that are exempted from the new regulations are those with very low energy use or ones that are neither heated or cooled. T or F

Yes.correct answerA contractor needs to remove a non-load bearing wall, does he need to pull a permit? No.correct answerA concrete contractor has been hired by an owner to install a driveway and sidewalks. The lot is flat and the concrete is being place on undisturbed earth with a prepared base. Does the contractor need to pull a permit? Yes.correct answerA permit has been issued for a building project and there is a code infraction in the building plans that has been overlooked by the building official. Can the building official require a correction to a project that they previously overlooked? Health department.correct answerWho issues a well and septic permit? 200 sq. feet. IRC R105correct answerPermits are not required for one story detached accessory structures not exceeding: The next business day.correct answerIf work requiring a permit is provided in an emergency situation, the permit application must be submitted within: True.correct answerIf an inspection official is refused entry to a building project, the official will have recourse to the remedies provided by law which include securing a warrant from the court and returning with an officer of the law. No. IRC R104.8correct answerCan a building official be held liable for any damage occurring to persons or property as a result of their actions or inaction? Yes.correct answerAn owner needs a foundation wall repaired, it has seriously buckled due to excessive lateral loading from soil pressure. Does the contractor need to pull a permit? 6 ft.

IRC R105.2correct answerAlthough contractors should check for restrictive covenants and local zoning requirements, a permit isn't required from the building official for installing a fence not over _______ tall. 180 days.correct answerIf a permit is applied for but not yet approved and the applicant is not persueing approval after______ days the application will be considered abandoned. Yes.correct answerCan a building official revoke a Certificate of Occupancy? True.correct answerWhen a project requiring a permit has commenced prior to the issuance of a permit, the building official is authorized to charge an additional fee. T or F 450correct answerFoam plastic is used as insulation. The flame spread index cannot exceed 75 and the smoke development index cannot exceed 8".correct answerFoam plastic used for interior trim shall have a maximum thickness of 1/2" and a maximum width of 10%.correct answerFoam plastic interior trim must not constitute more than __________ of the total wall and ceiling area of any room or space. 1/2".correct answerFoam plastic used as insulation in walls must be separated by an approved thermal barrier. What is the minimum thickness of gypsum wall board being used as a thermal barrier for spray foam insulated walls? Framing.correct answerWhich of these inspections happens last? Mechanical rough Plumbing rough Framing Electrical rough

Yes.correct answerA retaining wall will be five feet tall from the bottom of the footing to the top of the wall. Do you need to pull a permit? At the time of inspection.correct answerYour building is utilizing engineered products such as engineered floor joists. When do the installation instructions need to be available at the work site? 1 3/8" solid wood 1 3/8" honeycomb core 20 minute fire rated Any of the abovecorrect answerA door directly between a garage and a residence shall never open directly into a sleeping room. The door must also be 1 1/4"correct answerThe nosing for stairs shall not be less than 3/4" but not be more than No.correct answerA front porch is 25 inches above the grade below. Are guards required to be installed? False.correct answerIf a smoke alarm is in a bedroom, it doesn't need to be right outside the bedroom also. 1/2"correct answerIf spray foam insulation is used to insulate a wall, what is the minimum thickness of drywall needed to cover the foam plastic? 200correct answerFinishing materials used for walls and ceiling shall have a flame-spread index not to exceed No.correct answerWood joists are 19" above exposed ground. Do they have to be preservative treated or naturally durable wood? True.correct answerYou may bulldoze, grade and remove tree stumps in a wetland as long as you have a permit.

True.correct answerCurrent code requires that the lowest floors in newly constructed buildings in flood hazard areas not located in designated Coastal A Zones, must have the lowest floors elevated to or above the 100-year design flood elevation. T or F Cohesive, granular, organic.correct answerWhat are the three basic soil types? Reduce settling Provide stability Increase load-bearing capacitycorrect answerThe principal reasons to understand soil composition are to: 150 yardscorrect answerIf a excavating company needs to haul away 125 yards of bank soil that will swell 20% how many yards of loose soil will they haul away? Setback.correct answerThe exact location of property lines should be determined early in the design phase in order to comply with __________ requirements. True.correct answerA garden shed over 200 square feet will require a permit.code T or F Bulldozer.correct answerWhat tool would you use to peel back topsoil? Cutting into Piling soil over Compactingcorrect answer_________ the root system of a tree during construction can potentially kill it. Builders level.correct answerYou would use a ________ to determine a floor is level, but this tool would not help determine if a wall is plumb. 1/2 inch.correct answerThe condition of erosion control devices must be checked after a rainfall event of _______ or more within a 24 hour period.

15 feet from the property line.correct answerA side yard easement of 15 feet means your building structure must be: Who set the monument When was it set Where was it setcorrect answerYou can identify survey monuments by the following Easements.correct answerPublic _________ provide utilities access to run lines or pipes across or under your property. Fill.correct answerA deposit of earth material placed by artificial means is called True.correct answerGrading is changing the earth surface by either excavating or filling or a combination of both. T or F Rough grade.correct answerThe stage at which the grade approximately conforms to approved plans is called: True.correct answerWater wells should be located on the opposite side or uphill side of the house from the drainfield. T or F Lifts.correct answerWhen back filling around the foundation the soil should be compacted in __________ of 6 inches at a time. True.correct answerThe ablility to achieve maximum density when compacting soil requires that the soil has it's optimum moistute content. T or F True.correct answerThe heavier the plates are on a vibratoty plate compactor the more compaction force it will generate. T or F False.correct answerAll soil types have the same optimum moisture content for compaction.

Plot plan and site plan.correct answerWhich drawing shows the shape and boundary lines of a lot, as well as locating the building, driveway, sidewalks, well and septic system, elevation contours, etc. Plot Plan Site plan Elevation plan Both A and B Proctor test Sand cone test Nuclear density testcorrect answerWhat is a method of determining soil density? Without adequate moisture or containing too much water.correct answerIt is virtually impossible to compact soil without adequate moisture containing too much water with optimum moisture content both A and B Point of reference or a benchmark.correct answerA basic starting point from which measurements in building layout can be made using a transit or builders level is called a All of the above.correct answerWhen building in a floodplain, special precaution must be made concerning: flood resistant construction. determining the design flood elevation. placing the lowest floor at the proper elevation. all of the above Parking vehicles , building access or storage.correct answerWhen building in a floodplain, enclosed areas below the design flood elevation will be used solely for

True.correct answerIncreasing the weight of the plates on vibratory plate compactors is the best way to increase their efficiency. T or F True.correct answerRammers are the most efficient compactor to use in clay (cohesive) soils. T or F Avoid raising or lowering the grade around the trees Bore under the tree roots instead of trenching for Utility installations Barricade the area around the trees keeping heavy equipment offcorrect answerSpecial precautions should be taken with desirable trees on a building site to avoid injuring and even killing them such as: True.correct answerThe optimum moisture content for soil compaction will depend on the type of soil being compacted. Moisture content.correct answerProper _______________ is the most important factor in efficient soil compaction. Shoring up the side walls.correct answerThree methods of preparing an excavated hole to prevent cave- ins are: 1) providing the correct angle of repose for the specific soil type, 2) the benching method and 3)___________________________________. 5 feet.correct answerIf an excavation is more than _____________, an adequate protective system from cave-ins must be utilized. True.correct answerGrading is changing the earth surface by either excavating or filling or a combination of both. Removing vegetation, noncomplying fill and topsoil.correct answerBefore filling, the ground must be prepared to receive fill. An example of this would be: Final grade.correct answerSite vision GPS systems are installed on bulldozers to help establish :

Lifts.correct answerWhen compacting soils, soils should be compacted in ____________________ of 6 inches. This will provide for proper compaction through all levels. Slope.correct answerA ground surface inclination expressed as a ratio of horizontal distance to vertical distance is called Hand shovel.correct answerHow should the excavator remove excess soil from beneath a buried electrical line? Prevent evaporation.correct answerThere are two ways to insure proper curing of concrete: apply water to make up for water lost due to evaporation, and True.correct answerWhen pouring concrete, the concrete should be placed near its required point. Excessive handling of the concrete weakens it. T or F Never acceptable.correct answerPouring concrete on frozen earth is: 1/2"correct answerThe diameter of a No. 4 deformed bar is: All of the above.correct answerWhich of the following are true in regard to cold-weather construction? calcium chloride is added to concrete to help it set quickly. insulation of straw, hay, or polyethylene is placed around concrete footings. concrete block walls are usually laid with heated mortar. all of the above 1/4 the thickness.correct answerWhen sawing a control joint in a concrete slab, the joint must be a minimum of how deep? Middle one third.correct answerRebar placement for a footing should be in the ________________________ of the footing depth.

Chairs.correct answerThe most precise way of positioning rebar for a slab is to use: True.correct answerChairs are classified according to their degree of rust protection. Class #1 is the maximum protection, class #2 is moderate protection, and class #3 is no protection. T or F Curing.correct answerProper __________________ prevents most problems in the finished concrete. Methods used to ensure a high quality, finished product, include a sprayed on membrane curing compound, polyethylene sheets, waterproof paper or wet burlap. Slump cone.correct answerA _________________ is a 12" high cone which determines the amount of water in the mix. 5% to 7%correct answerIn cases of severe cold weather exposure, the air content in a concrete mix should be about: Scale or spall.correct answerIf concrete is exposed to de-icers and it is not air entrained, it will: Scaling.correct answerWhen concrete becomes flaky and fragmented on the surface, this is called: One quarter the space between side forms Three quarters the space between reinforcing bars One third the depth of the slab on groundcorrect answerThe maximum size aggregate is limited to the lesser of: 150 lbs.correct answerHow much does one cubic foot of concrete weigh? 28 days.correct answerConcrete is considered to be fully cured or set after ______________days. True.correct answerAir entrainment protects concrete from frost damage, but also makes concrete more workable. For that reason, not as much water is necessary for the mix. T or F

Retarders.correct answerOn hot sunny days in the summertime, a contractor may decide to use ____________ to slow down the setting time of concrete. Cement, sand, water, and gravel.correct answerConcrete is made by mixing: Cause it to shrink more Weaken it Cause it to crack morecorrect answerAdding too much water to a concrete mix will _______________ it. Screedingcorrect answer_________________ concrete is the process of leveling the freshly poured concrete before it is floated. Truecorrect answerFloating of the freshly screeded concrete is accomplished with a wood or magnesium bullfloat which smoothes out, levels, compacts and brings the small particles to the surface for finishing. T or F Power trowel.correct answerOn large areas, it may be necessary to use a __________________ to finish the surface area. Non-slip surface.correct answerOn sidewalk surfaces, it is necessary to broom the surface of concrete to provide a: Cure.correct answerIt is necessary to maintain the temperature above 50 degrees in order for concrete to properly: 2"correct answerWelded wire mesh should be placed ___________ from the top of concrete slab surface. Efflorescence.correct answerThe white salty powder that forms on the finished surface of concrete is called Slab.correct answerA concrete floor may also be called a:

The top cures faster.correct answerConcrete slabs on grade have a tendency to curl because: Power screed.correct answerAs concrete is placed in a form it needs to be leveled off. This can be done manually or mechanically with a Movement, expansion or contraction.correct answerA control joint allows for what? To slow down the setting time of concrete.correct answerWhat is the purpose of adding retarders to a concrete mixture? Water reducers.correct answerWhat is added to make concrete more workable with less water? 10'correct answerA one car driveway should have a minimum width of? 18'correct answerA two car wide driveway is usually how wide? 3"correct answerWhere concrete is cast against and permanently exposed to the earth, reinforcement steel should be __________________ from the earth. Increase the slump to the level specified in the mix design.correct answerIn most specifications, adding water to a batch of concrete is permitted only one time at the job site as long as the water/cement ratio is not exceeded. This would be done in order to: Lower the cement factor and increase the size of the aggregate.correct answerA method to prevent cast concrete from excessive shrinking is to: Control random cracking.correct answerContraction joints, also known as control joints, in a slab are used to: Movementcorrect answerIsolation joints isolate differing parts of a structure to permit independent:

Construction joints.correct answer________________________ are a convenient way to limit the size of the placement of concrete to a manageable volume and are a stopping place for a day's work. Base.correct answerFor a slab placed below grade, it is necessary to provide at least 4" of crushed gravel or stone. This should be compacted. It will prevent moisture from collecting under the slab. This 4" area is known as ________________________. At least 12 hours.correct answerThe timing for the removal of forms is important. The concrete has to achieve a strength great enough to support its own weight and the weight of any construction loads placed upon it. General guidelines for wall and column form removal is _________________________ after placement. Rich concrete.correct answerConcrete that has a lot of Portland cement in the mix may be referred to as: Improves ductility and reduces surface cracks.correct answerWhat is the reason for using fiber reinforcement in concrete? Form release agent (oil).correct answerWhat is used to prevent concrete from sticking to wood forms? Calcium chloride.correct answerThe most commonly used additive to help concrete set rapidly and more cohesively is: Tool for leveling concrete.correct answerWhat is a screed? 90 minutes.correct answerWith the exception of special conditions, maximum delivery time between the water being mixed with the Portland cement in batching and the time of completion of discharge from a transit-mix truck is Prevent cracks from opening.correct answerWhat is the sole purpose for welded wire fabric in a floor slab?

True.correct answerThe reason for tying reinforcing bars with tie wire is to keep the rebar in place while pouring. It does not add any additional stength to the concrete. T or F Stay-in-place forms.correct answerConcrete slabs poured above grade are often supported by ribbed or corrugated steel decking. These forms are called False.correct answerRebar is placed in concrete mainly to improve its compression strength. T or F #16 gauge soft annealed.correct answerWhat is the usual size of tie wire for rebar placement? Temperature reinforcement.correct answerReinforcing steel placed to resist the stresses due to shrinkage and weather changes is called 27correct answerReady mix concrete is purchased by the cubic yard, which is how many cubic feet? The curing process.correct answerThe thermal process known as hydration refers to: Determining water mix in concrete.correct answerA slump cone is a metal cone used for: Air entraining agents.correct answerWhat admixture is used to improve the durability of concrete that is exposed to freezing and thawing? Reinforcing rod or welded wire.correct answerReinforced concrete is accomplished by adding: 1/4 inch.correct answerThe term "fine aggregate" refers to well-graded gravel up to: Has more workability and is more watertight.correct answerIn comparison to regular concrete, air entrained concrete: Making concrete more durable in freeze/thaw conditions.correct answerAir entrainment is used for what?

Hydrationcorrect answerWhen water is added to Portland cement it causes the mass to harden. This reaction is called: Calcium chloride.correct answerAccelerators speed up the curing process. Which of the following is an accelerator? True.correct answerConcrete cures best in cool, damp environments. T or F Durability Surface soundness Reducing crackingcorrect answerBesides ensuring the proper strength of concrete, proper curing of concrete also aids in: 12" R1003.2 Chimneyscorrect answerWhat is the minimum thickness of concrete footings for fireplaces? 3 1/2"correct answerWhat is the minimum thickness of concrete used for floors on grade? Hot days and large pours with small crewscorrect answerRetarders slow down the setting time of concrete allowing more time for finishing. This is especially useful on: True.correct answerWhen pouring concrete directly on earth for exterior purposes such as driveways and side walks, if the base is dry it will tend to draw the moisture out of the concrete prematurely. It's a good idea to moisten the base prior to the pour, no puddles though. Concrete not being air entrained Overworking while finishing air entrained concrete Exposure to deicers within 30 days of the pourcorrect answerScaling of concrete is caused by? True.correct answerConcrete with larger aggregate will need less air entrainment. T or F

Sand and water.correct answerWhen air entrainment is used the amount of _________ in the mix is reduced. T or F Cool damp conditions.correct answerConcrete cures best in? Once.correct answerTransit mix concrete allows for water to be added to the mix ________ at the jobsite. Hydrolic cement or epoxy injection.correct answerTo repair a crack in a concrete foundation wall use Slope the ground away from the wall 5% Use impermeable backfill at the building perimeter Install downspouts that carry water away from the foundationscorrect answerThe best way to avoid moisture problems below grade is to: House wrap.correct answer___________ allows water vapor molecules to pass through, while keeping out liquid rain water. Siding.correct answer__________ is the first line of defense against moisture coming in contact with the wall framing, insulation and interior wall finishing. 6"correct answerExterior wood framed walls, sheathed walls and wood sidings that are less than ____" above finished grade must be made of either naturally durable wood or preservative treated wood. 1 1/4 inchcorrect answerThe minimum horizontal lap for fiber cement siding is U-factor.correct answerThe IECC defines _______ as: The rate at which a window, door, or skylight conducts non-solar heat flow True.correct answerThe lower the U-factor, the more energy efficient the window is. T or F

Storm doors Hot tub enclosure Unframed swinging doorscorrect answerWhich of the following areas require safety glazing? 30"correct answerThe International Residential Code requires a cricket or saddle built immediately upslope and behind any chimney wider than ______". 14 1/2 inchescorrect answerWhat is the actual distance between studs that are placed at 16" O.C.? Moisture to escape.correct answerHousewrap is a special infiltration barrier on the outside surface of the wall sheathing that is installed before the siding is installed. It's high tech design prevents air infiltration while still allowing: Which is 6 inches of drop over 10 feet.correct answerThe required slope for the grade around a home away from the foundation is least 5 % for the first 10 feet. 6 inches.correct answerExposed insulating material applied to the exterior of foundation walls shall be protected to a minimum depth of _________ below the finished grade. Michigan Uniform Energy Codecorrect answerMUEC True.correct answerTo help keep rain water from the roof from saturating the soil around the foundation use a less permeable top-soil or a clay cap at grade so water more effectively moves away from the foundation. T or F Conduction, convection and radiation.correct answerWhat are the three methods of heat transmission? Warm side in winter.correct answerWhere should a vapor barrier be placed on an exterior wall? An indication of a materials ability to reduce heat transmission.correct answerWhat does R-value represent?

True.correct answerFlashing is required above all window and door openings as well as above all horizontal projecting trims that do not have ship lap or built-in flashing edges. T or F 3correct answerWhen crawl spaces are naturally ventilated a ventilation opening is required with ____ feet of each corner. R-1correct answerWood that is one inch in thickness has approximately what R-value? True.correct answerHomes with uninsulated crawl space foundation walls require insulation that is in permanent and continuous contact with the underside of the subfloor decking. T or F True.correct answerWhen installing foam board sheathing using adhesives a solvent adhesive will damage the foam board. T or F True.correct answer1/2 inch gypsum board has an R- value of .45, softwood lumber has an R- value of 1.25 per inch. T or F True.correct answerVentilation baffles insure that the required air space below the roof sheathing isn't obstructed by insulation materials. T ot F Paperbacking on batt insulation Polyethylene sheeting Closed cell sprayfoam insulationcorrect answerIn cold climates like Michigan It's important to have a vapor retarder on the inside surface of exterior walls behind the finished wall surface. this can be accomplished with? 8"correct answerWhen a fireplace lining of firebrick at least 2" in thickness is installed, the total minimum thickness of the back and side wall is _________________, including the firebrick. 1" minimum to 4 1/2" maximum.correct answerThe air space between brick siding and the plywood sheathing should be:

Weep holes.correct answerTo insure that water moisture is not trapped behind brick veneer, small holes are made in the joints of the lowest course of bricks. These holes are called: Running.correct answerWhich brick pattern is the strongest? 2.67correct answerBrick ties should be placed not more than every 2 feet horizontally, and vertically so that no more than _____ square feet are supported by one tie. Lime.correct answerWhat ingredient, when increased in mortar, decreases strength but increases workability? Pilastercorrect answerA masonry column that is used to support other structural members is called: Fireplace flues should be kept straight as possible, but furnace flue direction can change within code limitations.correct answerWhen building flues for fireplaces or furnaces: Flue.correct answerThe passageway in a chimney which allows the smoke and fumes to escape is the: Width.correct answerA 12" masonry block is referring to what? 16 plus 2 full corners.correct answerHow many concrete blocks are needed to lay one course of 8x8x16 blocks in a wall that is 24 feet long? Key stone.correct answerThe center stone in the middle of an arch is called? Corner leads.correct answerWhen constructing a masonry building using block, the ____________ are laid first. 3 feet.correct answerWhat is the minimum height of a chimney located at the ridge of a roof?

Thin set.correct answerWhat is the mortar base used when laying ceramic flooring? Add proper amount of sand and mortar.correct answerHow would you thicken mortar that has too much water in it? Sufficiently braced.correct answerBackfill shall not be placed against the wall until the wall has sufficient strength and has been anchored to the floor above or has been ___________ _____________ to prevent damage. water.correct answerMortar is a mixture of lime, Portland cement, sand and 2-1/2correct answerWhen the air temperature is above 80F, mortar should be used within _______ hours after originally mixed. True.correct answerMasonry units shall be dry before placing. T or F 3/8"correct answerConcrete blocks are ________ shorter in all dimensions (length, width and height) than the nominal dimensions. 8'correct answerBracing is required when a masonry wall exceeds ________ while under construction. Add water and thoroughly remix.correct answerTo retemper mortar that has stiffened: 3/4"correct answerThe minimum allowable bed joint for a starting course on a footing is 1/4" and the maximum allowable is 3/8" to 1/2"correct answerOther than the starting course, horizontal bed joints for masonry shall be: 32-3/8" x 40-3/8"correct answerConstructing a panel using 8" nominal glass block, with the block being four blocks wide and five blocks high, what should the size of the opening be, in order to maintain the bond of the surrounding blocks in the wall?

7-3/4" x 7-3/4" x 3-7/8"correct answerWhat is the actual size of a nominal 8" square glass block? Hydraulic cementcorrect answerWhat product is a non-corrosive, non-rusting and non-shrinking material that is best used to seal cracks in masonry and concrete? Diamond tip blade.correct answerWhat blade would you use to cut brick with? 1-1/2correct answerGrout shall not be used after _______ hours after originally mixed. Prior to mixing, heat sand and water to produce mortar above 40 degreescorrect answerIn cold weather, to prevent mortar from freezing Closure blockcorrect answerThe block which fills the final gap in a course between corners is called the: Bed jointscorrect answerIn constructing a stack bond joint, #9 gage steel reinforcement is required in every other course. The joint reinforcement is placed horizontally in the: 3/8"correct answerBed joints are horizontal joints. The first course of bed joints can't be less than 1/4" or more than 3/4". Ideally, all joints should be: 9 gauge wirecorrect answerWall ties are either #22 gauge galvanized sheet metal or: 8"correct answerMasonry walls for fireplaces shall not be less than __________ in thickness where a firebrick lining is used. 20"correct answerThe firebox shall not be less than ___________ in depth. 1/4"correct answerJoints in fire brick shall not exceed: hearthcorrect answerThe fireplace ____________________ shall be composed of brick, concrete, stone or other approved noncombustible materials and not be less than 4" thick.