Virginia Residential Building Contractor (RBC) Practice Test

These questions are part of the practice quiz. Start practicing

• What level provides accurate results within +/- 1/4 inch at a distance of 75 feet?
• How many inches must side rails on a fixed ladder extend above the top of an access level?
• What document explains the hazards associated with toxic chemicals or substances on the job site?
• What is the appropriate seam lap distance for stapling 15lb asphalt building paper to the subfloor?
• When installing drywall, how should joints be butted together?
• What type of drywall screw is specifically used for wood framing?
• What material should be taped off to the slab for a moisture test?
• What is commonly used to fill nail dimples or screw indentations on finished drywall?
• What are wedge shaped radiating treads on stairs known as?
• A roof with a 4:12 slope using 24" taper sawn shakes must have a minimum exposure of how many inches?
• What moisture content percentage is considered dry for lumber?
• Which of the following is not found on a certificate of occupancy?
• How many hinges are recommended to strengthen a door and prevent warping?
• For door installations, what should be nailed first?
• In what type of building scenario should you avoid using standard drywall?
• What is the minimum thickness required for base flashing?
• What are the risers in a stairway responsible for?
• What is the minimum size screw recommended for fastening a 3/4" cabinet to a stud covered in 1/2" drywall?
• Who is capable of identifying predictable hazards in the working conditions?
• What is the primary benefit of a solid nailing base provided by wall sheathing?
• When marking the location of walls, which item must be situated correctly on the subfloor?
• Which of the following are functions of wall sheathing?
• For ramps extended for use other than specifically for means of egress, what is the maximum allowable slope?
• What is one of the main purposes of a subfloor?
• If you have a bedroom that is 15' x 20', what is the total net area of window glass needed?
• What measuring tool is often used for precise leveling tasks on construction sites?
• What classification does the soil shift to when cracks are present in an open excavation?
• What is the minimum width required for ladder jack scaffolds?
• How long should drywall screws for wood framing typically be?
• In window specifications, the first dimension given for glass refers to what measurement?
• What shows the location of wall reinforcement, such as anchor bolts?
• What are the actual dimensions of a board labeled as 2 x 4 after it has been surfaced and seasoned?
• At what height should a stairway or ladder be provided at personnel points of access without a ramp or hoist?
• For buildings with a roof pitch of less than what ratio must hips and valleys be designed as beams?
• What is the minimum thickness for aluminum valley flashing?
• What is the maximum allowed moisture content for lumber used to frame a 4:12 pitch roof?
• What type of water must be provided for drinking at a construction site?
• What is the large principal horizontal member used to support floor joists called?
• If debris is dropped, what is the maximum distance it can fall before a chute must be used?
• When should personal protective equipment (PPE) be used on a construction site?
• A vertical member that provides intermediate support for a girder is known as a ____________.
• How can you estimate the number of studs required for existing walls?
• What are written notes arranged in a list form that provide instructions about materials and methods for construction called?
• What is the purpose of aluminum valley flashing?
• What is the maximum spacing for a 2 x 6 in a bearing wall that supports a roof and ceiling?
• Which of the following is NOT an advantage of using Laminated-Veneer Lumber (LVL)?
• What is the standard thickness of most interior passage doors?
• Which type of protective eyewear can be worn over corrective spectacles?
• What is a common feature of all types of drywall screws?
• How much should brick stacks taper back for every foot of height above the 4' level?
• What is the primary purpose of Material Safety Data Sheets (MSDS)?
• When an 18" minimum is not feasible, which options are acceptable?
• Interior partitions (nonbearing) may be constructed with at least how many top plates?
• What is the primary purpose of building paper (asphalt felt)?
• Which entity is responsible for providing training on the use of fire extinguishers?
• What is the minimum slope required for grade adjacent to a structure?
• A listed flame spread index of ____ or less is required when codes specify fire retardant treated wood.
• For a ladder with a working length of 24', how far should its base be placed from the structure it is used against in feet?
• What is the recommended distance for footings from the frost line?
• What aspect of wood does moisture content directly influence most significantly?
• How frequently should waste be disposed of on a construction site?
• What is the minimum head lap allowed for slate shingles secured to a roof with a 6:12 slope?
• Which of the following tools can read horizontal and vertical angles electronically?
• What is the term used to describe the amount of water contained in wood?
• For a kitchen in a limited space, which compact design is preferred?
• What is typically included in building specifications?
• In building, what is the primary purpose of a batter board?
• Sole plate of exterior walls on monolithic slabs are anchored no more than how many feet apart?
• What maximum vertical side dimension is required for unsupported vertically sided lower portions of excavations 8 feet or less in depth?
• In residential structures, what is the maximum area in square feet that the concealed space can exceed without requiring draft stops?
• In drywall installation, what is the purpose of using a joint tape?
• Typically, how deep are wall cabinets and where are they often located?
• What factor must be taken into account when calculating material needs for a subfloor?
• What defines the unit rise in a staircase?
• The flame spread index is typically determined by:
• What is the consequence of inadequate clearance for wood siding from the ground?
• Which construction project would not require a building permit?
• When boring a hole in a wood stud near the edge, what is the closest the hole can be placed to the edge?
• In case of an emergency requiring immediate access to fire extinguishers, the travel distance is limited to?
• Notes on architectural drawings are primarily for what purpose?
• What does the "R value" measure?
• How many cubic yards of dirt need to be excavated for a house that is 35 feet wide, 44 feet long, and 21 inches deep, rounded to the next whole yard?
• What term refers to the dimensions of the glass that are visible and covered?
• What is the main danger of using paint at low temperatures?
• Bagged materials must be stacked by stepping back the layers at least how many bags high?
• What is the maximum height that bundled bricks should be stacked?
• What is the primary purpose of the paper backing on blanket or batt insulations?
• If a stairway has a total rise of 8'2" and a riser height of 7", how many risers are in the stairway?
• What is the total horizontal distance between stairs referred to as?
• What is a recommended protective clothing item when installing insulation?
• What is the maximum height for used lumber to be stacked manually after removing all nails?
• Entry door locks typically contain what type of mechanism?
• What is the maximum impact noise level in dB of peak sound pressure that is acceptable?
• When is a head lap particularly important in roofing?
• What type of hinges are commonly used for 1-3/8" interior doors?
• Which inspection is not needed before demolishing a building according to the guidelines?
• What is the required width for egress windows in bedrooms according to code?
• A guardrail system is required for protection when a porch or balcony is located more than how many inches above the grade or floor below?
• When should daily inspections of excavations take place, especially after which event?
• What is the term for the ability of a substance to allow water to pass through?
• What type of safety measure must be in place on unprotected edges?
• What size and type of gypsum board is required to separate a garage from a habitable room above it?
• What type of systems must employers provide and install for stairways and ladders?
• Which of the following materials is commonly used as fire retardant treated wood?
• What are the first components of a suspended ceiling commonly referred to as?
• The maximum length available for Laminated-Veneer Lumber (LVL) is up to how many feet?
• Why is it important to wear gloves while installing insulation?
• What reading would a builder's level show at a batter board height of 2 ft 8 in, when the leveling rod measures 6 ft 4 in at the benchmark?
• What advantage does house wrap have over asphalt paper?
• When storing materials, aisles and passageways must be kept clear to avoid what?
• What is the frequency of inspection required for Manila, plastic, or synthetic ropes to ensure they meet strength requirements?
• Intermediate members (balusters) should be spaced no more than how many inches apart?
• What is the required action for debris that exceeds a designated drop height?
• Mineral surfaced roll roofing should not be applied on roof slopes with less than what percentage?
• Materials should be stored in tiers to prevent what?
• Which of the following insects can damage wood?
• What is the primary purpose of joint compound when used with joint tape?
• What health conditions can result from inhaling or swallowing asbestos?
• What may categorically be defined as hazardous?
• A small crack that runs across the growth rings in wood, often due to seasoning, is called a ________.
• Where should the exterior air intake for a fireplace not be located?
• Who is responsible for furnishing all respirator equipment needed?
• Who is allowed to use powder-actuated tools?
• A fully planked or decked floor or nets must be maintained within what limit under any erection work being performed?
• In a stairway measuring 9'2" with 14 risers, what is the unit rise?
• What type of lock set is designed for light-duty use on bedroom and bathroom doors?
• Purlins used to support roof loads must be at least what size?
• The required head lap can vary based on what factor?
• Which type of drywall should not be used in damp areas?
• Which instrument can measure vertical angles?
• What is the minimum perpendicular space required between fixed ladder rungs and any obstruction?
• Which type of joint compound can be stored at any temperature?
• When cutting and grinding certain materials, what extremely fine particles might be released?
• This plan shows the outside shape of the building, size and shape of the rooms, and location of doors and windows.
• Clay tile should be installed on a roof with a minimum slope of what ratio?
• What is the minimum distance untreated wood joists should be installed from the ground?
• How many 16d common nails are required when nailing a top plate to a stud?
• How many feet must side rails on a portable ladder extend above an upper level?
• What type of soil is classified as granular soil by OSHA?
• Wood siding installed on the exterior of a structure must have a clearance of how many inches from the ground?
• What is the standard interior door height commonly found in most buildings?
• Which of the following is the most common type of exterior finish?
• How many toilets are required for a site with 20 employees or less?
• At what angle should non-self-supporting ladders be used in relation to their working length?
• Who has the authority to render interpretations of the building code?
• Symbols in architectural drawings are used to represent which of the following?
• Fixed machinery should be properly what to prevent walking or moving?
• If the elevation is at a 2% grade over a horizontal distance of 75 feet, what is the difference in elevation?
• What squaring method helps ensure a 90-degree angle in building corners?
• An __________ is a side view (front, rear, right, and left) that allows you to see the height of objects.
• Which plan illustrates the vertical relationship of spaces in a building?
• For a room measuring 12' x 16' with an 8' ceiling, how many square feet of gypsum board are needed?
• Which type of foundation is most commonly used for wood frame construction?
• Site plans show which of the following components?
• What must be used at all times on all portable, power driven tools?
• What type of door consists of stiles and rails with raised panels?
• What fire spread index is considered safe for most residential buildings?
• Which of the following is NOT an advantage of house wrap?
• What structural component provides support and strength for a building's roof?
• What is the critical factor for roof pitch when using lapped metal panels?
• What is one component of suspended ceilings?
• Unprotected sides and edges require guardrails at what height above the lower level?
• What is a substance that can cause injury or death due to its explosive, flammable, or harmful nature called?
• What protective gear is necessary when installing insulation, besides clothing?
• What feature does a resilient channel system provide in soundproofing?
• A notch made at the end of a floor joist should not exceed what fraction of the depth of the joist?
• For which type of construction is a fire retardant treated wood typically required?
• Which of the following lumber types is commonly used because of its weight and ease of handling?
• Which system can enhance sound transmission class (STC) ratings in wood frame walls?
• Purlins used to support roof loads must be at least the size of which component?
• What occurs when wood reaches a moisture content equivalent to that inside the building where it is installed?
• What role does a competent employee serve in a work environment?
• How far in feet should a shovel be placed from the edge of an open excavation?
• Slate shingles are advantageous because they:
• When lumber is described as "green," what does that typically imply?
• Which of the following describes lumber that has a moisture content above 19%?
• What is the preferred direction for hinged doors to swing when possible?
• At what height in feet above a lower level must an employee on a scaffold be protected from falling?
• What is the minimum free opening required between sheathing and insulation in an insulated sloped ceiling?
• What should workers at a site be able to do concerning potential hazards?
• What benefit does light-colored paint provide?
• When specifying the dimensions of glass, which is listed second?
• Which of the following architectural elements terminates in arrows?
• What are numbers that tell the size of something called?
• How much gap is typically left between floor sheathing panels to allow for expansion?
• What should be done if tools are found to be defective?
• What is the purpose of specifying a flame spread index?
• What is the minimum requirement for head lap to mitigate leaks during heavy rain?
• Slate shingles are primarily used for roofing due to their:
• What characteristic of Laminated-Veneer Lumber (LVL) makes it effective for construction purposes?
• What is the minimum height of a chimney placed 5' from the ridge with a roof slope of 5:12?
• What is required for any platform more than 10' above the lower level?
• What are the two main steps of a wall layout?
• Why is bracing strength important in a subfloor?
• What plan is the employer responsible for developing?
• What role does a subfloor play during the construction process?
• What is the minimum width for platforms or walkways?
• What is the minimum height of guardrails, including tolerance?
• What is the maximum flame spread rating class for wall and ceiling finishes in a structure?
• Where must signs of warning about falling materials be posted?
• At no time shall there be more than how many floors or 48 feet of unfinished bolting or welding above the foundation?
• What is the minimum vertical clearance required for scaffolds when working around power lines, in feet?
• What provides the best protection for skylights?
• What is the maximum allowable load-bearing pressure for soil used in foundations?
• What should a paint contractor do if they are unfamiliar with the paint they are required to use?
• What is the maximum span for a 2 x 8 nominal floor joist (southern pine #2) installed in a sleeping area with a dead load of 10 psf?
• A scale of ____ = 1' 0" is most often used for drawing houses.
• What is the maximum spacing for an interior bearing wall framed with 2 x 6's supporting a roof and ceiling?
• Fungi grow most rapidly at temperatures between which Fahrenheit degrees?
• How far must footings for masonry fireplaces extend beyond the face of the fireplace?
• What is the required joint laps for an approved vapor barrier to be placed between a concrete floor slab and the grade?
• Dimensions are shown in which unit of measurement in architectural drawings?
• How is a stack of loose bricks above 4' typically managed?
• What is the critical need for tools provided by employers or employees?
• What is the maximum size hole that can be placed in an interior non-load bearing stud?
• If an employee provides their own protective devices, who is responsible for maintaining this equipment?
• Why is fall protection necessary on work platforms?
• A material's R value is critical for what type of building consideration?
• When is a guardrail system necessary for construction?
• Which of the following is true regarding fire retardant treated wood?
• What is the preferred finishing method to protect the outside corners of finished drywall?
• The horizontal cross pieces that connect stiles in door construction are known as what?
• Why is corner bead used in drywall finishing?
• What is calculated to determine the amount of drywall needed for a room?
• At a site with 20 or more employees, how many toilets and urinals are required per 40 workers?
• What does a mullion strip do in combined window configurations?
• Footings must extend how far below undisturbed soil or properly compacted fill?
• When lumber dries, how does it tend to shrink?
• For an excavation that is 8' deep and 100' long, what is the minimum number of ladders required for emergency egress?
• What type of light should be provided where work is in progress?
• What is the total weight limitation for steel joist bridging being hoisted at one time?
• How thick are most standard interior doors?
• What is the primary purpose of the cover for a skylight?
• In building codes, what is the minimum height for a handrail above a staircase?
• What type of lumber can kill fungi due to its high temperatures during processing?
• What is the minimum required thickness for exterior wall sheathing?
• When placing a long piece of flooring, what should be the distance from the side wall to the grooved edge?
• What is the safe distance in feet for operating heavy machinery near an edge of an excavation?
• Which type of level requires the least amount of time to set up?
• What percentage of the floor area should the total net area of window glass be less than?
• How many inches must beams and girders bear on a masonry column?
• What term describes a lengthwise cut between or through the natural growth rings of wood?
• For an emergency escape opening in a habitable space, what is the minimum net clear opening width specified?
• What is an area around the perimeter of a room that is lower than the rest of the ceiling called?
• When calculating the number of sheets needed for a square subfloor that is 36' x 36', how many 4 x 12 x 2 plywood sheets are required including a 10% waste factor?
• Given the floor of the combustion chamber to the top of the flue is 18 feet, and the fireplace opening is 2,200 square inches, what is the minimum cross-sectional area required for a rectangular chimney flue?
• What is the minimum uniformly distributed live load for a room intended for sleeping?
• What is the minimum floor space required for a habitable room?
• When is fall protection required on a construction jobsite?
• For how long must the outdoor temperature remain above 40 degrees Fahrenheit after applying oil-based paints?
• What effect does kiln-drying lumber have on fungi?
• What type of switch must hand-held power tools have?
• What type of roof is known for its pitch and allowing water to run off efficiently?
• What is the term for a board nailed horizontally to stakes placed outside the corners of a building?
• Which of the following statements is TRUE about shaking in wood?
• Passage locksets are commonly referred to as what?
• Who should ensure that tools are maintained in a safe condition?
• How far from the top of a floor joist should holes be bored to install plumbing pipes?
• What is the maximum amount of flammable or combustible liquid that can be stored in a room outside of an approved storage cabinet?
• What is the minimum height allowed for railing on a residential deck?
• In terms of architectural design, a soffit might also be referred to as what?
• What is the minimum offset required for end joints in double top plates?
• When lumber layers are glued together, what is the type of lumber produced?
• What is a scale in the context of construction measurements?
• When is the installation of finish flooring typically performed?
• What safety measure is required when working on a flat roof over 6 feet high?
• A rendering is sometimes referred to as a what?
• What is the minimum square footage of glazing required for a bathroom, unless ventilated with a fan?
• What thickness is Type X gypsum typically associated with?
• What is the minimum slope for lapped, non-soldered seam metal roofs without lap sealant?
• What is the primary focus of foundational drawings in building design?
• What are the minimum dimensions for a barricade if debris is dropped through a hole and no chute is present?
• Masonry walls that are over what height must be adequately braced to prevent overturning?
• What is the minimum height that perimeter columns shall extend above the finished floor?
• What size floor joist is required for an SPF #2 installation at 16" on center with a dead load of 20 PSF in a residential living area?
• Which material is commonly associated with health risks due to airborne fibers during renovations?
• What is the maximum travel distance to the nearest fire extinguisher?
• What is the purpose of using building paper in residential construction?
• How frequently must combustible scrap and debris be removed from a jobsite?
• Corner beads typically come in which two lengths?
• What is the maximum length of wood shingles commonly used?
• What is an important factor that affects energy efficiency in building design?
• Masonry chimneys constructed of hollow masonry units must be grouted solid with a nominal thickness of at least how many inches?
• Interior door heights are typically standardized to what measurement?
• How far must hazardous materials or equipment be kept from the edge of excavations?
• What type of plan provides details on the structural supports of a building?
• What measurement accurately describes a 2 x 4 after it has been processed through a lumber mill?
• What is the total cost to haul 2500 cubic feet of dirt at a rate of $60 per cubic yard?
• What is the minimum clearance in inches required between the center line of fixed ladder rungs and any obstruction on the climbing side of the ladder?
• What is the proper depth for footing below frost line to prevent shifting?
• What is the minimum distance that plumbing pipes should be located from the top of a floor joist?
• A vertical wood piece separating combined window units is known as what?
• What is used to describe the size and type of windows in construction?
• Who is responsible for providing containers for the collection and separation of waste at a construction site?
• How often should fall arrest systems be inspected?
• What is the maximum notch depth allowed for a 2 x 12 nominal floor joist that spans 14'6"?
• What is the recommended outdoor temperature for best results when using paintable water repellent wood preservatives?
• For a site with 200 or more employees, how many toilets and urinals must be provided per 50 workers?
• For a rectangular subfloor that measures 34' x 72', how many full sheets of 4 x 8 plywood are needed?
• According to OSHA, what is the maximum allowable height in feet for manually stacked lumber?
• Which tool is most commonly used to measure distances accurately on construction sites?
• A hearth extension must extend at least how many inches in front of the fireplace opening if it is at least 6 square feet?
• What is the maximum outside diameter of a circular handrail?
• What type of kitchen design is commonly utilized in limited spaces?
• Which of the following is NOT a requirement for storing materials safely?
• What type of lenses must employees whose vision requires corrective lenses wear?
• Which plan typically includes landscaping details around the building?
• What is the maximum allowable variation for the height of guardrails?
• For steel framing, what type of drywall screw is recommended?
• What should be considered when determining the placement of window glass in a room?
• How many stories must be maintained between the erection floor and the upper most permanent floor during erection?
• Which of the following woods is known to be decay resistant?
• What should be the condition of the surroundings to be considered safe for employees?
• How many square feet of protected building area necessitates a fire extinguisher?
• For a platform meant for personnel, what is the minimum width it should have?
• What is the recommended minimum overlap on plain bevel siding?
• Which insect is often responsible for significant damage in wooden structures?
• What type of barrier is used specifically for preventing moisture issues in buildings?
• What is used to prevent condensation when cold air meets warm air?
• By shading walls and roof structures, trees can reduce heating and cooling expenses by what percentage?
• How long should flooring be stored in the building before being laid to permit acclimation?
• What is the purpose of wall molding in a suspended ceiling system?
• What is the minimum width of a walkway on a platform scaffold?
• What is the minimum net clear opening of an exit window located at the grade floor of a single residence?
• A hole may not be bored closer than how many inches to the edge of a stud in an exterior load-bearing framed wall?
• A notch must be placed in a ceiling joist of nominal size 2 x 10 that spans 12 feet 8 inches. What is the maximum notch that can be placed on the top, 2 feet from the exterior wall?
• What is the maximum allowable slope for driveways according to building codes?
• What term describes a person assigned or approved by the employer to perform a specific task?
• What is the allowable load-bearing pressure for sedimentary and foliated backfill in pounds per square foot?
• What type of wood should be used for taper sawn shakes?
• A deviation or bend from a straight true surface in wood is known as a ________.
• What is the consequence of insufficient head lap in roofing?
• Without approval from a registered design professional, which modifications can be made to wood floor trusses?
• Which type of window is typically not suitable for use on a hotel balcony?
• Green gypsum board is specifically used in bathrooms due to its what property?
• Before beginning steel erection, cured samples of concrete and masonry must meet proper standards for what process?
• What does the outdoor temperature affect after applying oil-based paints?
• An annular-ring (ring-shank) drywall nail is preferred for its ability to provide better holding power. For drywall that is 1/2" thick, what is the minimum length of nail required?
• What type of slope is defined as 6:12?
• Which of the following substances has been eliminated from residential building construction due to recognized health hazards?
• How should lumber be secured before stacking?
• How is strip flooring commonly packaged?
• What is the maximum peak sound pressure level exposure to impulsive noise for workers?
• What is the minimum required headroom in the attic space above the access opening?
• What type of paint application can significantly reduce indoor temperature rises?
• What type of sheets provide an excellent base for tile on floors or walls?
• What is the typical depth of base cabinets, not including the countertop?
• What is the required minimum height for guardrails on a construction site?
• What type of gypsum is considered fire resistant?
• How far apart must trusses be spaced in a residential structure for proper support?
• How long should a slab cure before installing a wood floor over it?
• Which type of joist depth allows less fraying of the material when notching?
• What is the term for adjusting wood to match the moisture levels in an installation environment?