Nevada C-3A Carpentry and Repairs Contractor Examination

Under OSHA 1926.501, at what height must a carpenter on an unprotected walking/working surface be protected from falling by a guardrail, safety net, or personal fall arrest system?

• A6 feet (1.8 m) or more above a lower level
• B4 feet (1.2 m) or more above a lower level
• C10 feet (3.1 m) or more above a lower level
• D15 feet (4.6 m) or more above a lower level

What is the required top-edge height of an OSHA construction guardrail system above the walking/working level?

• A36 inches plus or minus 3 inches
• B42 inches plus or minus 3 inches
• C48 inches plus or minus 2 inches
• D39 inches exactly

When a portable ladder is used to reach an upper landing, how far must the side rails extend above that landing unless the top is secured and a grasping device is provided?

• A1 foot (0.3 m)
• B2 feet (0.6 m)
• C3 feet (0.9 m)
• D4 feet (1.2 m)

What guard is required on a portable circular saw used for framing or finish cuts?

• AGuards above and below the base plate that automatically return to cover the blade
• BA fixed upper hood only, with the lower blade left exposed
• CA riving knife with no blade cover
• DNo guard if the saw is used for less than 15 minutes

When cutting treated lumber, composite trim, or gypsum with a power saw, which personal protective equipment is required in addition to a hard hat where falling-object hazards exist?

• AA cotton dust mask only, with no eye protection
• BHearing protection only if the saw is used indoors
• CSteel-toe boots only
• DEye and face protection meeting OSHA 1926.102

A 24-inch by 24-inch floor opening is cut for a plumbing chase on a framed second floor. What does OSHA 1926.502 require of the hole cover?

• AAny scrap plywood is acceptable if it overlaps the hole by 1 inch
• BThe cover must support twice the maximum intended load, be secured, and be color-coded or…
• CThe cover must support the weight of one worker only and may be left unmarked
• DA warning cone next to an uncovered hole meets the standard

Unless designed by a qualified person with a safety factor of at least two, what minimum strength must a personal-fall-arrest anchorage have per attached employee?

• A1,800 pounds (8 kN)
• B3,600 pounds (16 kN)
• C5,000 pounds (22.2 kN)
• D10,000 pounds (44.5 kN)

At what height must each employee on a scaffold be protected from falling to a lower level?

• AMore than 10 feet (3.1 m) above a lower level
• B6 feet (1.8 m) above a lower level
• C4 feet (1.2 m) above a lower level
• D15 feet (4.6 m) above a lower level

A portable extension ladder reaches a 16-foot eave. Using the OSHA 4:1 setup, how far from the wall should the base of the ladder be placed?

• A2 feet
• B4 feet
• C6 feet
• D8 feet

A temporary job-built stair used during framing has four risers. What is the minimum height of a stairrail installed after March 15, 1991, measured from the tread at the nosing?

• A30 inches
• B34 inches
• C42 inches
• D36 inches

Except for the listed exceptions, each scaffold and scaffold component must support its own weight plus at least how many times the maximum intended load?

• ATwo times
• BThree times
• CFour times
• DSix times

When a safety net is used as fall protection for decking work, what are the maximum installation distance below the walking/working surface and the required drop-test bag?

• A15 feet below; 200-pound bag
• B30 feet below; 400-pound bag of sand 30 ± 2 inches in diameter
• C30 feet below; 200-pound sandbag
• D10 feet below; 500-pound bag

Before placing concrete in carpenter-built wall or slab forms, what does OSHA 1926.703 require on the jobsite?

• AFormwork and shoring drawings (including revisions) available on site, with shores inspec…
• BVerbal approval from any journeyman carpenter that the forms look stiff enough
• CRemoval of all wales and strongbacks so the forms can flex
• DA single unbraced 2x4 kickstand at each corner

What is the minimum clear width of a swinging means-of-egress door opening under IBC 2018 Section 1010.1.1?

• A28 inches (711 mm)
• B32 inches (813 mm)
• C36 inches (914 mm) of clear opening
• D44 inches (1118 mm)

Which glazing locations are hazardous locations that require safety glazing under IBC 2018 Section 2406.4.1?

• AGlazing in swinging, sliding, and bifold doors (with limited exceptions)
• BOnly skylights more than 12 feet above the floor
• COnly windows with sills higher than 60 inches
• DOnly wired glass in 2-hour fire walls

What are the IBC 2018 emergency-escape-and-rescue opening (EERO) minimums for a window that is not at grade?

• A4.0 square feet net clear; 18-inch height; 18-inch width; 48-inch maximum sill
• B5.0 square feet net clear at every story; 20-inch height; 24-inch width
• C5.7 square feet net clear; 24-inch height; 20-inch width; 44-inch maximum sill
• D9.0 square feet net clear; 36-inch height; 36-inch width; 36-inch maximum sill

In an IBC Group R-2 or R-3 dwelling unit, when must an operable window be limited so a 4-inch sphere cannot pass, or be fitted with a fall-prevention or opening-control device?

• AWhenever the window is on the first story, regardless of sill height
• BOnly when the window is required to be an emergency-escape opening
• COnly when the glass area exceeds 15 square feet
• DWhen the sill is less than 36 inches above the finished floor and more than 72 inches abo…

What is the minimum clear opening height of a means-of-egress door under IBC 2018 Section 1010.1.1?

• A78 inches (1981 mm)
• B80 inches (2032 mm)
• C84 inches (2134 mm)
• D96 inches (2438 mm)

Where must flashing be installed at an exterior window or door so the wall stays weather-resistant under IBC 2018?

• AAt the perimeter of the assembly so moisture is kept out of the wall or redirected to the…
• BOnly on the interior drywall return
• COnly under the stool, with the head left unflashed
• DFlashing is never required if caulk is applied to the exterior trim

Glazing in a fixed sidelight next to a door is a hazardous location under IBC 2018 Section 2406.4.2 when which conditions are met (unless an exception applies)?

• AThe glass is more than 60 inches from the door and more than 60 inches above the floor
• BThe pane is smaller than 3 square feet, regardless of location
• CThe glazing is within 24 inches of the door's vertical edge and its bottom is less than 6…
• DThe door is a closet door in a private office

What are the actual dressed dimensions of a standard dry 2x4 stud used in conventional light-frame walls?

• A2 inches by 4 inches
• B1-1/2 inches by 3-1/2 inches
• C1-3/4 inches by 3-3/4 inches
• D1-1/4 inches by 3-1/4 inches

In conventional light-frame walls sheathed with 4-foot-wide wood structural panels, what stud spacing is the usual layout that lands panel edges on stud centers?

• A12 inches on center only
• B19.2 inches on center only
• C16 inches on center
• D32 inches on center

How are board feet of dimensional lumber calculated for a single piece?

• A(nominal thickness in inches × nominal width in inches × length in feet) ÷ 12
• B(actual thickness × actual width × length in inches) ÷ 144 only, never using nominal size
• CLength in feet × 2, regardless of cross section
• DThe number of 4x8 sheets needed to equal the piece

When framing a load-bearing window or door opening, which member sits under each end of the header and carries the header load down to the sole plate?

• ACripple stud
• BKing stud only
• CRibbon board
• DJack (trimmer) stud

Sleepers and sills on a concrete or masonry slab that is in direct contact with the earth must be which of the following under IBC 2018 Section 2304.12.1.4?

• AAny kiln-dried spruce, untreated
• BNaturally durable or preservative-treated wood
• CFire-retardant-treated plywood only
• DInterior-grade particleboard

How must bearing and exterior wall studs be capped under IBC 2018 Section 2308.5.3.2, unless the single-plate exception is met?

• AWith double top plates lapped at corners and intersections, with end joints offset at lea…
• BWith a single 1x4 let-in ribbon
• CWith blocking only at braced-wall panels
• DTop plates may be omitted wherever a header occurs

A plumber asks to notch a metal-plate-connected roof truss so a vent can pass. What does IBC 2018 Section 2303.4.5 require?

• AAny notch less than one-third the chord depth is permitted without review
• BThe carpenter may drill the chord if the hole is centered
• CTruss members shall not be cut, notched, drilled, or spliced without written approval of…
• DField sistering with one 2x4 is an accepted substitute for engineering

Wood structural panels used for roof sheathing, wall sheathing, or subflooring must conform to which product standards under IBC 2018 Section 2303.1.5?

• AASTM C36 only
• BDOC PS 1, DOC PS 2, or ANSI/APA PRP 210
• CAWPA U1 only
• DASTM D3679 only

Which statement correctly describes Nevada C-3A (NAC 624.210) authorized work?

• AC-3A is limited to hanging drywall and applying texture
• BC-3A is limited to overhead sectional doors and operators
• CC-3A includes welding of steel door frames as a primary joining method
• DC-3A includes formwork, framing, subflooring, siding, exterior stairs and railings, roof…

When selecting joists and studs from a lumber pile, how should pieces with a visible crown be oriented?

• ACrown up (convex edge up) on joists and rafters so the member tends to straighten under l…
• BCrown down so the camber increases after loading
• CCrown facing the exterior so siding nails miss the pith
• DCrown orientation does not matter on No. 2 and better

How many board feet are in 24 pieces of 2x8x12 framing lumber?

• A192 board feet
• B256 board feet
• C384 board feet
• D512 board feet

Unless supported on a 1x4 ribbon nailed to the adjoining stud, what is the minimum end bearing of a floor joist under IBC 2018 Section 2308.4.2.2?

• A3/4 inch on wood or metal and 1-1/2 inches on masonry
• B1-1/2 inches on wood or metal and 3 inches on masonry
• C3 inches on wood or metal and 1-1/2 inches on masonry
• D5-1/2 inches on any support

Which statement matches IBC 2018 Section 2308.4.2.4 for notches and holes in sawn lumber joists?

• AEnd notches ≤ 1/4 depth; other notches ≤ 1/6 depth and not in the middle third; holes ≤ 1…
• BAny notch is allowed if it is in the middle third of the span
• CHoles may be any diameter if they are centered on the joist depth
• DNotches on the tension edge of a 2x10 are unlimited at midspan

What is the maximum depth a wood stud may be cut or notched in an exterior wall or bearing partition under IBC 2018 Section 2308.5.9?

• A10 percent of the stud width
• B40 percent of the stud width
• C60 percent of the stud width
• D25 percent of the stud width

Which bored-hole rule in IBC 2018 Section 2308.5.10 is correct?

• ANo hole may exceed 25 percent of the stud width in any wall
• BHoles may cut through a notch in the same cross section if the remaining wood is 1/2 inch
• CHoles ≤ 40% of stud width are permitted in any stud; holes ≤ 60% are permitted in nonbear…
• DA 3-inch hole is always permitted in a 2x4 if the stud is in an interior wall

In a crawl space, untreated wood joists or wood structural floors, and untreated wood girders, must stay at least how far from exposed ground under IBC 2018 Section 2304.12.1.1?

• A6 inches for joists and 6 inches for girders
• B18 inches for joists or wood structural floors and 12 inches for girders
• C12 inches for joists and 18 inches for girders
• D24 inches for all wood members

Wood framing members, including wood sheathing, that touch an exterior foundation wall and are less than how far from exposed earth must be naturally durable or preservative-treated?

• A8 inches (203 mm)
• B2 inches (51 mm)
• C18 inches (457 mm)
• D24 inches (610 mm)

When framing a floor opening, when must trimmer and header joists be doubled, and when do header ends need hangers or anchors?

• ADouble the header if the opening is any size; hangers are never required if the header is…
• BDouble only the tail joists; headers may always be single 2x material
• CDouble trimmers and headers where the header span exceeds 4 feet; support header ends wit…
• DDouble members only in Seismic Design Category E

In combustible stud walls, where must fireblocking be provided under IBC 2018 Section 718.2.2?

• AOnly at the roof ridge
• BVertically at ceiling and floor levels, and horizontally at intervals not exceeding 10 fe…
• COnly in walls taller than 20 feet
• DFireblocking is never required in Type V construction

Floor or ceiling joists with a nominal depth-to-thickness ratio of 5 to 1 or greater need bridging under IBC 2018 Section 2308.4.6 at what spacing, unless both edges are held in line?

• AOne line at midspan only, regardless of span
• BEvery 4 feet of span
• COnly at the bearings
• DOne line of bridging for each 8 feet of span

End joints in double top plates must be offset at least how far under IBC 2018 Section 2308.5.3.2?

• A48 inches (1219 mm)
• B16 inches (406 mm)
• C24 inches (610 mm)
• D96 inches (2438 mm)

What are the IBC 2018 Section 1011.5.2 limits on rectangular stair riser height and tread depth?

• ARiser 8-1/4 inches maximum; tread 9 inches minimum
• BRiser 7 inches maximum and 4 inches minimum; rectangular tread 11 inches minimum
• CRiser 7-3/4 inches maximum; tread 10 inches minimum
• DRiser any height if the 17–18 rule is met

A framed floor-to-floor height is 108 inches. Using IBC 2018's 7-inch maximum riser, how many risers and what unit rise should be used?

• A14 risers at 7-11/16 inches
• B15 risers at 7.20 inches
• C16 risers at 6-3/4 inches, with 15 treads
• D18 risers at 6 inches, with 18 treads

What are the IBC 2018 guard height and opening limits at an open-sided exterior stair or landing more than 30 inches above the floor or grade?

• A42-inch minimum height; openings shall not pass a 4-inch sphere
• B36-inch minimum height; 6-inch sphere everywhere
• C34-inch minimum height; 4-inch sphere
• D42-inch minimum height; 9-inch sphere

What is the required height of a stair handrail under IBC 2018 Section 1014.2?

• A30 to 34 inches above the nosing
• B42 to 48 inches above the nosing
• C28 to 32 inches above the nosing
• D34 to 38 inches above the nosing