Carpentry NC II flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Accomplishment report

A daily record listing the tasks completed, crew names, man-hours, materials used, and equipment deployed on a site, signed by the foreman and verified by the supervisor.

Request for information

A written query sent to the designer to resolve a conflict, omission, or ambiguity in the plans; work proceeds only on the written response, which is logged in the project file.

Hierarchy of control

The order of risk controls from most to least effective: elimination, substitution, engineering controls, administrative controls, and personal protective equipment as the last resort.

Fall protection threshold

In general construction, fall protection is required at heights of 1.8 meters (6 feet) or more, using guardrails, personal fall-arrest systems, or equivalent controls.

Scaffold inspection tag

A tag attached to a scaffold recording the date of inspection by a competent person and the pass or fail status; scaffolds are inspected before each shift and after alteration.

Waste segregation

Sorting site waste into biodegradable, recyclable, and residual or hazardous streams; used oil, paint cans, and solvent rags are hazardous and never poured into drains.

Sticker stacking

Placing lumber on spacers called stickers over level bearers, off the ground and under cover, so air circulates and boards do not warp or stain.

Residual current device

A protective device on a power circuit that trips when it detects current leaking to earth, reducing electric shock risk from damaged tools and cords.

First-in first-out storage

A stock rule in which the oldest cement or material is issued first; bags are kept dry on pallets, and expired bags are tested or rejected before use.

Tool tag-out

Marking a defective tool as out of service and removing it from the work area until repaired, so no one uses equipment that fails inspection.

Drawing scale ratio

The ratio of drawing distance to actual distance; at 1:50, one millimeter on paper represents fifty millimeters on site, so a 20 mm line is 1,000 mm actual.

Elevation datum

A stated reference level, such as finished floor at 0.00, from which all vertical dimensions on the drawings are measured rather than from the existing ground.

Door and window schedule

A table listing each door and window by tag, with size, type, material, and hardware, used to order materials and set rough openings.

3-4-5 squaring method

A layout method that marks 3 units along one line and 4 along the other; when the diagonal between the marks measures 5 units, the corner is square.

Equal diagonals check

A squareness check for a rectangle in which both corner-to-corner diagonals are measured; equal diagonals confirm square, and unequal ones require adjustment.

Batter boards

Horizontal boards set beyond the excavation line, carrying stretched strings that mark the building outline and can be re-stretched after digging disturbs the lines.

Site benchmark

A fixed, protected point of known elevation used as the reference for all level transfers; it is never moved without recording the new elevation.

Form release agent

A coating applied to clean form panels before placing reinforcement so concrete does not bond to the forms; it must not contaminate reinforcement or construction joints.

Camber in formwork

A slight upward curve built into long-span beams and slabs to offset deflection; the specified camber is measured at midspan before the concrete pour.

Form stripping strength

The concrete strength at which soffit forms and props may be removed; removal depends on tested strength, not on a fixed number of days.

Double top plate

Two plates at the top of a wall that distribute loads and lap at corners and intersections, tying adjoining walls together in platform framing.

Jack and king studs

King studs run full height beside an opening, while jack studs support the header; both are sized and placed per the structural plans.

Roof pitch

Rise over run expressed as a ratio, such as 4:12 meaning 4 units of rise for every 12 units of run; the angle is the arctangent of rise divided by run.

Rafter length multiplier

A factor derived from the unit rise per unit run that, multiplied by the rafter run, gives the rafter length for a given roof pitch.

Collar tie

A horizontal member connecting opposing rafters, usually in the upper third of the roof, that resists rafter separation and adds stability to the roof frame.

Mortise and tenon

A joint in which a projecting tenon on one member fits into a cut mortise in another; the tenon is typically about one-third of the rail thickness.

Dado joint

A groove cut across the grain of a board to receive another board, commonly used for shelving and cabinet carcasses, with depth about one-third of board thickness.

Coped inside corner

A trim joint in which the end of one molding is cut to the profile of the adjoining piece, producing a tight inside corner that resists seasonal movement gaps.

Wood movement allowance

Solid wood expands and contracts across the grain with moisture; panels are floated in grooves and fasteners leave room so the wood does not split or buckle.

Hold point

A stage in construction where work cannot proceed until an inspection is completed and signed off, such as before pouring concrete or closing a wall.

Punch list

A record of defects found at inspection, giving location, description, and responsible trade; items are closed and verified before final acceptance of the work.

As-built drawings

Drawings revised to show the actual installed conditions, including changes from the original plans, submitted as part of the project completion documents.