New Mexico CID GS-7 Drywall Installation and Texture Examination

A standard 4-foot by 8-foot gypsum board sheet covers how many square feet?

• A32 square feet
• B24 square feet
• C40 square feet
• D48 square feet

For a simple rectangular room with square corners and few openings, what waste factor is commonly added to a gypsum-board takeoff?

• A10 percent
• B2 percent
• C25 percent
• D40 percent

A closed rectangular room is 10 feet by 12 feet with 8-foot ceilings. Using 4-foot by 8-foot sheets, a 10 percent waste factor, and no door or window deductions, how many sheets are required for the walls and ceiling?

• A17 sheets
• B15 sheets
• C20 sheets
• D22 sheets

A 12-foot by 14-foot room has 8-foot walls, one 3-foot by 7-foot door, and one 3-foot by 4-foot window. Using 4-foot by 8-foot sheets and 10 percent waste, how many sheets are needed for the walls only?

• A12 sheets
• B14 sheets
• C16 sheets
• D18 sheets

Why do many drywall estimators prefer 4-foot by 12-foot sheets on 8-foot-high walls?

• AThey cover 48 square feet and can be hung horizontally to reduce butt joints
• BThe sheets weigh less than 4-foot by 8-foot panels
• CThey are required by IRC Table R702.3.5 on every wall
• DThey eliminate the need for joint tape

On a floor plan drawn at a scale of 1/4 inch = 1 foot 0 inches, a partition measures 3 inches long on the drawing. What is the actual partition length?

• A8 feet
• B10 feet
• C12 feet
• D16 feet

Which drawing is the best source for ceiling gypsum layout, soffits, and ceiling-mounted fixtures?

• AThe reflected ceiling plan
• BThe foundation plan
• CThe plumbing isometric
• DThe door hardware schedule

A commercial wall type on the drawings is labeled UL Design U465, 1-hour. What governs fastener spacing and board layers?

• AThe listed fire-resistance design, which must be followed as tested
• BAny 5/8-inch Type X board hung with the installer's usual 16-inch screw spacing
• CIRC Table R702.3.5 only, even on an IBC commercial project
• DThe finish-paint specification in Division 09

Per NMAC 14.6.6, which framing work is inside the GS-7 Drywall Installation and Texture scope?

• ANon-structural steel or wood stud systems and channel iron that provide a base for drywall
• BStructural load-bearing wood or steel stud walls
• CRoof truss fabrication and setting
• DEngineered floor-joist installation

Which New Mexico rule adopts the 2021 International Residential Code as the New Mexico Residential Building Code?

• ANMAC 14.7.3
• BNMAC 14.7.2
• CNMAC 14.10.4
• DNMAC 14.8.2

A wall is 48 feet long and 8 feet high. If 4-foot by 12-foot sheets are hung horizontally with no waste, how many sheets are required for that one side?

• A8 sheets
• B6 sheets
• C10 sheets
• D12 sheets

Where should a GS-7 estimator first look to see whether a partition is 5/8-inch Type X, regular 1/2-inch, or a listed fire-rated assembly?

• AThe wall-type schedule and partition legends on the architectural drawings
• BThe electrical one-line diagram
• CThe landscaping planting schedule
• DThe plumber's fixture-unit table

A ceiling takeoff is 320 square feet. Using 4-foot by 8-foot sheets and 10 percent waste, how many sheets should be ordered?

• A11 sheets
• B10 sheets
• C12 sheets
• D14 sheets

Per NMAC 14.7.3, New Mexico's residential garage-to-dwelling separation from the residence and attics requires which gypsum material on the garage side?

• A1/4-inch flexible gypsum board
• B3/8-inch regular gypsum board
• C1/2-inch regular gypsum board, matching unamended IRC Table R302.6
• D5/8-inch Type X gypsum board or equivalent

Which document set is the correct first stop for a commercial gypsum thickness, listing, and finish-level question on a New Mexico job?

• ANMAC 14.7.2 with the 2021 IBC, plus the project drawings and specifications
• BThe IRC only, because all New Mexico buildings are residential
• COSHA 1926 Subpart L only
• DThe electrical panel schedule

Which ASTM standard is the product specification for gypsum board, including regular and Type X panels?

• AASTM C1396
• BASTM C557
• CASTM C475
• DASTM E119

What is the primary performance difference between regular gypsum board and Type X gypsum board?

• AType X is waterproof and intended for shower pans
• BType X has a specially formulated core that provides greater fire resistance in tested as…
• CRegular board is always thicker than Type X
• DType X cannot be taped or textured

Per ASTM C1396, 5/8-inch Type X gypsum board must provide at least a 1-hour fire-resistance rating in which qualifying test assembly?

• AA single layer on one side of 24-inch on-center steel studs with no fasteners specified
• BBoard applied parallel to both sides of load-bearing 2x4 wood studs 16 inches on center,…
• CTwo layers of 1/4-inch flexible board on furring with adhesive only
• DFoil-backed 3/8-inch board over a vapor retarder in a shower

Why must Type C gypsum panels from different manufacturers not be mixed in the same fire-rated assembly?

• AType C ratings are proprietary tested assemblies; the listing applies only to the identic…
• BType C is only a paint finish and has no core differences
• CType C is not a gypsum product
• DBuilding codes require all Type C to be 1/4 inch thick

Per ASTM C1002, which screw type is manufactured specifically to attach gypsum board to steel framing?

• AType S
• BType W
• CType G
• DType A deck screw

Per IRC R702.3.5.1, screws attaching gypsum board to wood framing shall penetrate the wood not less than:

• A1/4 inch
• B3/8 inch
• C5/8 inch
• D1-1/2 inches

Per IRC R702.3.5.1, screws attaching gypsum board to cold-formed steel framing less than 0.033 inch thick shall penetrate the steel not less than:

• A3/8 inch
• B1/8 inch
• C5/8 inch
• D7/8 inch

Which ASTM C1002 screw is intended to laminate one gypsum panel to another gypsum panel?

• AType S
• BType W
• CType G
• DType S-12

Screws used to attach gypsum board to cold-formed steel 0.033 inch to 0.112 inch thick shall comply with which standard?

• AASTM C1002 Type W only
• BASTM C557
• CASTM C954 or ASTM C1513 bugle-head screws
• DASTM C475

Per IRC Table R702.3.5, for 1/2-inch gypsum board on walls with framing 16 inches on center and no adhesive, what is the maximum screw spacing?

• A6 inches on center
• B8 inches on center
• C12 inches on center
• D16 inches on center

Per IRC Table R702.3.5, for 1/2-inch gypsum board on a ceiling with framing 16 inches on center and no adhesive, what is the maximum screw spacing?

• A6 inches on center
• B8 inches on center
• C12 inches on center
• D16 inches on center

Per IRC Table R702.3.5, 1/2-inch gypsum board may be applied to a ceiling with framing 24 inches on center only when the board is oriented:

• APerpendicular to the framing
• BParallel to the framing
• CDiagonally across the framing
• DIn two layers of 1/4-inch board only

Per IRC Table R702.3.5 footnote d, when a water-based texture will be applied to a ceiling on 24-inch on-center framing, what is the minimum gypsum thickness unless sag-resistant ceiling board is used?

• A1/4 inch
• B3/8 inch
• C1/2 inch regular board
• D5/8 inch

Per IRC Table R702.3.5 footnote d, 3/8-inch single-ply gypsum board shall not be used on a ceiling where:

• AA water-based textured finish will be applied, or the ceiling will support insulation
• BThe walls are painted
• CThe framing is 12 inches on center
• DThe room is a closet

What is the preferred hanging sequence for gypsum board in a room?

• ACeiling first, then the walls
• BWalls first, then the ceiling
• COnly the walls; ceilings are hung last after paint
• DFloors first, then walls, then the ceiling

Per IRC R702.3.5, edges and ends of gypsum board shall occur on framing members except:

• AThose edges and ends that are perpendicular to the framing members
• BAll factory-tapered edges, which may float in the field
• CEvery cut end, which may land between studs if taped
• DFire-rated assemblies only, which never require backing

Gypsum Association and IRC diaphragm notes place fasteners not less than what distance from the edges and ends of gypsum board?

• A3/8 inch
• B1/8 inch
• C1 inch
• D2 inches

How should a drywall screw be seated in gypsum board?

• ALeft proud of the face so the head can be sanded off later
• BDriven until the paper tears and the core crushes, to make a deeper mud pocket
• CDriven at a sharp angle to increase withdrawal resistance
• DDriven so the head is slightly below the surface without breaking the face paper or fract…

If a screw is overdriven so the face paper is broken and the core is crushed, what is the correct repair before finishing?

• AIgnore it; joint compound will restore the holding power
• BRemove the board from the entire wall
• CCover the damaged screw with mesh tape only, with no additional fastener
• DDrive another properly seated fastener nearby and finish both heads

Per NMAC 14.7.3 Table R302.6, habitable rooms above a garage shall be separated with not less than:

• A3/8-inch regular gypsum board
• B1/2-inch regular gypsum board
• C5/8-inch Type X gypsum board or equivalent
• D1-inch shaftliner only, with no ceiling board

Per IRC Table R702.3.5, 5/8-inch Type X gypsum board used as a garage ceiling beneath habitable rooms shall be fastened at a maximum of:

• A16 inches on center for nails and 16 inches on center for screws
• B12 inches on center for nails and 16 inches on center for screws
• C6 inches on center for nails and 6 inches on center for screws
• D8 inches on center for nails only, with no screws permitted

Per NMAC 14.7.3 Table R302.6, structures supporting a floor-ceiling garage separation shall be protected with not less than:

• ANo gypsum, because only the ceiling board is required
• B3/8-inch regular gypsum board
• C1/2-inch regular gypsum board, matching unamended IRC Table R302.6
• D5/8-inch gypsum board or equivalent

How should gypsum boards be stored on the job?

• AOn edge, leaning against a wall in the weather
• BStanding in water so the boards can acclimate
• COn the roof, uncovered, to save interior space
• DNeatly stacked flat, indoors, dry, and off a damp concrete slab

Per GA-216, control joints shall be installed where a wall or partition runs in an uninterrupted straight plane exceeding:

• A10 linear feet
• B20 linear feet
• C30 linear feet
• D80 linear feet

Per GA-216, control joints in interior ceilings without perimeter relief shall be spaced so linear dimensions do not exceed:

• A10 feet
• B50 feet
• C100 feet
• D30 feet

Per GA-216 and ASTM C840 practice, what is the maximum area between control joints on an interior ceiling with perimeter relief?

• A400 square feet
• B900 square feet
• C2,500 square feet
• D10,000 square feet

Per GA-216, a full-height door frame in a partition is considered:

• AA defect that must be reframed
• BA substitute for all corner bead
• CA reason to omit gypsum on that wall
• DEquivalent to a control joint

Where a gypsum partition crosses a building expansion or seismic joint, GA-216 requires:

• ATaping the gypsum tightly across the structural joint
• BOmitting all fasteners within 8 feet of the joint
• CSwitching to 1/4-inch board only
• DA control joint in the gypsum at that location

Per GA-216, gypsum board joints shall not be located within what distance of the corners of door or window openings unless a control joint is installed there?

• A4 inches
• B12 inches
• C36 inches
• D60 inches

Per IRC R702.3.5, interior gypsum board shall not be installed where it is:

• AUsed on a closet ceiling
• BFastened with screws instead of nails
• CApplied perpendicular to ceiling framing
• DDirectly exposed to the weather or to water