Free NASCLA Exam Flashcards

The NASCLA commercial general building contractor exam has 115 questions, a 5.5 hour time limit, and a 70% passing score.

Open-book does not mean slow lookup. Organize references, tab high-use sections, and practice finding rules quickly under time pressure.

Procurement and contracting is the largest NASCLA domain in the local outline, so bidding, contracts, changes, submittals, and closeout deserve priority.

General requirements is another major NASCLA domain, covering planning, estimating, project management, safety, and code compliance.

A bid bond protects the owner if the selected bidder fails to enter the contract or provide required performance and payment bonds.

A performance bond guarantees completion of the contract work if the contractor defaults.

A payment bond protects subcontractors and suppliers by guaranteeing payment for labor and materials on the project.

An addendum modifies bidding documents before bids are submitted. Bidders must acknowledge addenda as required.

A change order is a formal contract modification that can adjust scope, price, time, or other contract terms.

A directive can order changed work before final agreement on price or time, depending on contract terms.

A Request for Information asks the design team or owner to clarify drawings, specifications, conflicts, or missing information.

A submittal provides shop drawings, product data, samples, or other information for review before procurement or installation.

A shop drawing shows how a contractor, supplier, or fabricator proposes to make or install part of the work.

A punch list identifies incomplete or deficient work that must be corrected near substantial completion.

Substantial completion means the owner can use the project for its intended purpose, even if minor corrective work remains.

Final completion occurs when all contract work, corrections, documents, and closeout obligations are satisfied.

The critical path is the longest sequence of dependent activities controlling the project finish date. Delay on it delays the project.

Float is time an activity can slip without delaying the project completion date or a controlling milestone.

General conditions are project overhead costs and requirements such as supervision, temporary facilities, insurance, and site administration.

Quantity takeoff measures materials, labor quantities, and work units from plans and specs to support estimating.

A unit price applies a price per measurable unit, such as cubic yard, square foot, linear foot, or each.

Allowances reserve money for items not fully defined at bid time. Final cost is adjusted when the actual item is selected.

Contingency is a budget reserve for known uncertainties or risks, not a substitute for estimating known scope.

A lien waiver documents that a party gives up lien rights for payment received or promised, depending on the waiver type.

Employers must provide a workplace free from recognized hazards likely to cause death or serious harm.

A competent person can identify hazards and has authority to take corrective action.

Cave-ins are a major excavation hazard. Protective systems, soil classification, access, and inspections are key safety concepts.

Erosion and sediment controls keep soil on site and protect stormwater systems during construction.

Compaction increases soil density and support. Moisture content and lift thickness affect whether specified density is reached.

Slump measures fresh concrete consistency or workability, not final strength by itself.

Curing maintains moisture and temperature so concrete can hydrate and develop strength.

A control joint creates a planned weak line so shrinkage cracking occurs in a controlled location.

Rebar helps concrete resist tensile forces because concrete is strong in compression but weak in tension.

Mortar bonds masonry units, accommodates slight irregularities, and helps transfer loads through the wall.

Weep holes allow water in a masonry cavity or veneer system to drain to the exterior.

Flashing directs water out of assemblies at vulnerable transitions such as walls, roofs, openings, and masonry cavities.

A vapor retarder slows water vapor movement through an assembly. Placement depends on climate and wall design.

Steel members transfer loads through bolted, welded, or otherwise engineered connections shown in the contract and shop documents.

Light-gauge framing is commonly used for noncombustible walls, partitions, and some structural applications depending on design.

Engineered wood products such as LVL, I-joists, and glulam are manufactured for predictable structural performance.

A load-bearing wall supports structural loads from above; removing or altering it requires proper structural support.

A rough opening is the framed opening prepared to receive a door or window unit with required clearances.

Glazing work must coordinate glass type, frame, sealants, safety requirements, weather resistance, and installation tolerances.

Drywall finish level depends on final surface treatment and lighting; higher levels require more joint finishing.

Mechanical work must coordinate equipment, duct routing, controls, clearances, penetrations, and access for maintenance.

Rough-in places supply, waste, vent, and fixture connections before walls and finishes close the work.

Electrical rough-in installs boxes, conduit, cable, and pathways before insulation, drywall, or finish work covers them.

Grounding connects to earth reference; bonding connects conductive parts together to reduce shock risk and help fault current clear.

Coordination drawings help trades resolve conflicts among structural, mechanical, plumbing, electrical, and architectural systems before installation.

Master reference lookup, procurement and contracting, general requirements, safety, estimating, and the most common trade coordination concepts.