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NASCLA Exam
lightweight, 5/8" that is up to 15% lighter than standard Type X wallboard - correct answer Gysum Panel- Firecode Type X What is an advantage of veneer plasters? - correct answer Veneer plaster is more durable Least expensive stud for gypsum framing? - correct answer 25 gauge steel studs 18 GAUGE TIES are used for what in gypsum framing? - correct answer TO ATTACH CHANNEL TO FURRED AREAS Why USE SHORTER SHANK NAILS in framing with Gypsum? - correct answer TO PREVENT NAIL POPS With gypsum wall framing, how should studs be installed? - correct answer ALL STUDS SAME DIRECTION How should resilient channels be installed with respect to distance from floor and ceiling? - correct answer INSTALL RESILIENT CHANNELS 2" FROM FLOOR, 6" FROM CEILING How should furring channels be installed? - correct answer PERPENDICULAR TO JOIST What is the SPACING OF FURRING CHANNEL FASTENERS? - correct answer 24" OC Temperature of hanging drywall? - correct answer TEMPERATURE TO HANG DRYWALL SHOULD BE MORE THAN 50 DEGREES, ACCLIMATED FOR 24 HOURS AT 55- 70 DEGREES
What is the width of a gypsum control joint? - correct answer GYPSUM CONTROL JOINT WIDTH IS 1/2" Job conditions of finishing veneer plaster? - correct answer GREATER THAN 55 DEGREES, HUMIDITY 20-50 % THE SPACING OF FASTENERS FOR CORNER BEAD MUST NOT BE MORE THAN.... - correct answer 12" OC Storage Temperature of Gyspum... - correct answer Above 55 degrees, products start to deteriorate at 125 degrees When stacking gyspum, how far should the base of the stack be from the wall? - correct answer 4"-6" FROM WALL When can a door be used as a wall control joint? - correct answer THE DOOR MAY BE USED AS A WALL CONTROL JOINT IF THE JOINT GOES FROM THE CORNER UP Some purposes of roofing underlayment? - correct answer It protects roof sheathing before the roof is applied, and it gives added weather protection What is used to keep water from getting inside the roof? - correct answer Ice Dams The membrane of an ice dam should be HOW MANY inches inside the wall line? - correct answer 24 inches inside the wall line What is the term for flashing built into the vertical surface and bent down over the base flashing - correct answer counter flashing What is the flashing built right up on the chimney and butts the chimney and the shingles? - correct answer Step flashing How much exposure should be given when roll roofing? - correct answer 17 inches
What is the max height of a threshold? - correct answer 1/2 FOOT (6 in) Door hardware should be placed.... - correct answer 34 to 48 inches above finished floor Opening door force should be.... - correct answer 5 lbs Minimum ramp loading length? - correct answer 60 inches Ramps higher than HOW MANY inches shall have handrails? - correct answer 6 inches Ramp surface must extend how many inches outside the railing? - correct answer 12 inches Curbs at ramps shall be at least how many inches high? - correct answer 4 inches Parking space access aisles should be at least how many inches wide? - correct answer 60 inches Stair risers shall be what max and min. height? - correct answer 4 inches min, 7 inches max Handrail height shall be how many inches? - correct answer 34-38 inches Stair handrails shall extend how many inches past the nosing? - correct answer 12 inches past nosing Water closets shall be between how many inches from a side wall? - correct answer 16 to 18 inches Grab bars shall be how many inches above the shower floor? - correct answer 33 to 36 inches
Grab bars should be able to support how many lbs? - correct answer 250 lbs Front loading floor surface should be offset how many inches from the centerline? - correct answer 24 inches How much space should there be between U-shaped kitchens? - correct answer 60 inches A parking lot within 10 feet of a building may slope how much? - correct answer 2% slope With the erection of precast concrete products, the rotation of the panel should be performed where? - correct answer Over the truck bed Dunnage should not be continuous over how much? - correct answer Not more than one stack Wall panel bracing must be maintained until.... - correct answer permanent connections are accomplished Concrete panels help with what? - correct answer More rapid construction When dry packing grout, joints need greater than how much spacing? - correct answer Greater than 1 inch Minimum temperature to grout panels is? - correct answer 40 degrees Hollow core slab joints greater than 1/8" shall be.... - correct answer Taped Temporary shoring MUST stay in place until what? - correct answer All members are bearing
What is the term for if tensile stresses are allowed to be produced in the member under a working load? - correct answer Partially Prestressed How should you unload cables with regards to unbonded post tensioning? - correct answer Cradle the coils with nylon straps How far should cables be from pentrations? - correct answer 6 inches How many inches should you have for a jack with unbonded post tensioning? - correct answer 12 inches What should the cable diameters be? - correct answer .5 inches- .6 inches How can you resist more curvature? - correct answer Use more supports What is cellular concrete used for? - correct answer Fireproofing material EPDM (ethylene propylene diene membrane) requires a splice with what? - correct answer With lapped adhesive How long should the grout of terrazzo sit before finishing? - correct answer 3 days Terrazzo floor divider strips should not produce rectangles.... - correct answer More than 50% longer than wide When pouring concrete on steel deck, what is minimum thickness? - correct answer 2 inches What is used for the proper alignment of all connection plates? - correct answer Drift pins
How much larger are bolt hole diameters drilled than the diameter of the bolts to be used? - correct answer 1/16" larger What is the purpose of base plates in commercial construction? - correct answer They spread the column load onto the foundation Column splices should be how many inches above the floor? - correct answer 2 feet above floor What is an advantage of pre engineered steel buildings? - correct answer The are produced in many different sizes What kind of bracing is used to stabilize a frame? - correct answer Cross bracing What is the live load PSF for elevated slabs? - correct answer 50 PSF What is the term for a type of shoring that remains in place? - correct answer Underpinning Is shotcrete used to protect excavations? - correct answer NO What affects cycle time in commercial construction? - correct answer Attainable speeds of the truck for loaded and unloaded conditions What do Well-Point Systems consist of? - correct answer Surrounding the area with suction pumps to reduce groundwater What is NOT required when grouting stressing pockets? - correct answer Chloride Do parking lots need to have a percent slope? - correct answer YES What is used to determine the bearing capacity of soils? - correct answer Penetrometers
Are blueprints considered a submittal? - correct answer NO Who prepares shop drawings? - correct answer Manufacturers and fabricators What do submittals affect? - correct answer The project's schedule and quality What facilitates the proper installation of the material and equipment? - correct answer Shop drawings What should you use to confirm justification for rain delays? - correct answer Daily reports What document identifies areas for materials? - correct answer Job site Space Allocation What is the storage area on the jobsite called? - correct answer Laydown area What is the majority of the laydown area used to store? - correct answer Rebar During what part of the project is the laydown area mainly used? - correct answer First third of the project What is the most unpredictable expense of a project? - correct answer Labor costs What controls the layout and equipment that is used more than any other? - correct answer Site Constraints Who is responsible for as-built drawings? - correct answer The superintendent What can you expect to be present when contractors employ union workers? - correct answer Union Labor Agreements
The superintendent is responsible for how many projects? - correct answer ONE PROJECT Subcontractors should be paid on a _____ basis, per contractor approval - correct answer Timely What can inspector do if he discovers work being performed outside the permit? - correct answer Issue a stop work notice Technical specifications can affect the ____ - correct answer quality of work What type of relationship is used when two activities should be completed at the same time, regardless of different durations? - correct answer Finish to Finish Relationship What is the efficient method to transfer info from architect to builder? - correct answer Building Information Modeling What is allocation of overhead to items that will be completed early in the project? - correct answer Front loading What relates schedule of values to the schedule? - correct answer Cash flow projections Who gives payment draw request approval to the owner? - correct answer Architects At closeout, what is required prior to the initial punch list? - correct answer Notification What is the term for when the architect has determined that the facility is acceptable for owner use/occpancy? - correct answer Beneficial occupancy
What should you use to connect wall rebar? - correct answer A tie How much less energy do green buildings use compared to conventional? - correct answer 36% less energy What is the minimum size trench required when managing site runoff? - correct answer 4" x 4" trench Can greywater be reused for irrigation or filter for building reuse? - correct answer YES Can blackwater be reused like greywater? - correct answer NO, it needs to go to the sewer Thermal mass materials are effective at absorbing heat up to about HOW MANY inches? - correct answer 6 inches Is Oak (wood) a rapidly renewable resource? - correct answer NO Average new construction generates how much waster per sq ft? - correct answer 4 lbs of waste per SF What type of ventilation system uses high and low pressure zones created by rising heat and the associated convection currents? - correct answer Stack ventilation What acronym describes the amount of contaminates that a product emits - correct answer VOC (Volatile Organic Compounds) What green building rating system measures the performance of buildings? - correct answer The LEED (Leadership in Energy and Environmental Design)
With regards to steel decking, when lifting bundles of decking, you should use a _____ - correct answer Choker hitch Working platform capacities for floor decking should be _____ - correct answer 50 lbs/SF Working platform capacity for roof decking should be _____ - correct answer 30 lbs/SF What is the minimum length of end bearing that should be provided for steel decking? - correct answer 1 1/2" What are some methods of attaching steel decking? - correct answer Electric screw guns, self drilling screws, etc With regard to construction project management, is a daily log a quality management item? - correct answer NO Owner hires designer, then hires subs based on bids, may hire architect - correct answer Deisgn/Bid/Build single point of contact for owner, entity hires subcontractors - correct answer Design/Build Owner hires both design firm and construction project management firm; responsibilities vary - correct answer Construction Project Management The process that considers cost in the context of other factors like quality, durability, etc.; Most helpful during the DESIGN Phase - correct answer Value Engineering supplementary conditions that serve as additional owner requirements (insurance, wages) - correct answer Special Conditions
What determines the quality (strength and durability) of concrete? - correct answer Water-Cement Ratio Strong stone in concrete increases what? - correct answer Abrasion resistance What is used in hot weather to extend setting time? - correct answer Retarders What is used to shorten the setting time or to produce high early strengths? - correct answer Accelerators What can reduce the amount of water in the mix by over 30% while keeping the slump constant? - correct answer Superplasticizers What is the max delivery time for concrete? - correct answer 90 mins What is the most common spread footing and consists of a rectangular/square slab of thickness? - correct answer Isolated Footings What type of form has a one time use and is assembled piece by piece? - correct answer Job built forms What kind of forms are resusable? - correct answer Premanufactured Job Built forms What type of form is generally purchased/leased? - correct answer Manufactured forms What type of form requires stiffeners to reduce the tendency of the fiber form to bend? - correct answer Fiber Tube Forms What are stay in place forms that are assembled as interlocking blocks or sheets? - correct answer ICF Forms
What kind of nails are used to nail kickers, blocks, etc., - correct answer Duplex Nails How much does concrete weigh? - correct answer 150 lb/cu ft What is the typical form release agent? - correct answer Diesel Oil What is the max drop distance for concrete? - correct answer 5 feet What has a large effect on the rate of pouring concrete? - correct answer Lateral pressure Who is required to determine when forms can be removed? - correct answer Engineers What is used to determine concrete strength when removing forms? - correct answer Test Cylinders Compression cylinder test results should be sufficient prior to... - correct answer removing shoring What type of coating on rebar prevents corrosion? - correct answer Epoxy coating How much tolerance is allowed by stirrups? - correct answer plus or minus 1" What type of joint is used to accommodate movements cause by temperature change and drying shrinkage? - correct answer Contraction Joints What type of joints are used at points of restraint? - correct answer Isolation or Expansion Joints What type of joints are introduced for the needs of construction? - correct answer Construction joints
What temperature should you cure cylinders at the jobsite in a box? - correct answer 60-80 degrees A window list is referred to as a ---; this is also where the rough opening dimensions for windows are found - correct answer schedule What is used to estimate building lines to keep the work level and true? - correct answer Batter boards Corners can be squared using the --- method - correct answer 3, 4, 5 method Batter boards must be how many feet from the corners of the house? - correct answer 4 feet What tool helps layout the building? - correct answer Surveyor level What is the best method to anchor sill plates? - correct answer Anchor bolts What type of wood has the lowest resistance to decay? - correct answer Untreated sapwood What type of wood has natural decay resistance? - correct answer Heartwood The corner of a wood frame structure serves as a --- - correct answer shear wall How much of a space is needed at the end of a girder? - correct answer 1/2" What are the wood framing components around a chimney? - correct answer Trimmers, headers, and tail joist
How much of a gap is needed between MDF sheets in the subfloor? - correct answer 1/8" You should use two jacks at each end of the header when the frame opening span is longer than how many feet? - correct answer 6 feet Trusses carry roof loads while in the --- position? - correct answer Vertical Drywall should be flush with the - correct answer jamb Rough openings are typically how much wider that the door? - correct answer 2 inches One square of shingles is how many pounds and covers how much square feet? - correct answer 235 lbs, 100 SF Minimum joints for shingles is --- and joints between shingles in any course should be separated at least --- from joints in the adjacent course below - correct answer 1/4" and 1 1/2" What should you use to attach gutters? - correct answer Wraparound hangers Gutter minimum slope is what? - correct answer 1" in 16' Housewrap allows ---- to pass through, but not ---- - correct answer water vapor, water What prevents downdrafts in chimneys? - correct answer Hoods What is used to support wall cabinets? - correct answer Hanger rails What is used in steel framing when a single section is not long enough to extend the entire length of a foundation wall or header? - correct answer Track splices
