BPC Commercial Builder (Unlimited) key terms

A surety guarantee submitted with a bid that promises the bidder will sign the contract and furnish required bonds if selected; otherwise the surety pays the owner the difference up to the bond amount.

A surety instrument protecting the owner if the contractor fails to complete the work per contract terms, covering the cost of hiring a replacement up to the stated penal sum.

A surety instrument that guarantees the contractor pays subcontractors, suppliers, and laborers on the project, shielding the owner from mechanics lien claims filed by unpaid parties.

A statutory claim recorded against real property by parties who supplied labor, materials, or services and were not paid, potentially allowing forced sale of the property to satisfy the debt.

A signed document in which a party gives up the right to file a lien for work performed, typically exchanged for progress or final payment; conditional versions take effect only when payment clears.

A percentage of each progress payment withheld by the owner until substantial or final completion, providing leverage to ensure punch list items and closeout documents are finished.

The stage at which the work is sufficiently complete for its intended use, allowing the owner to occupy the facility; it starts warranty periods and typically releases retainage.

A compiled roster of minor incomplete or defective items identified during the final walkthrough that the contractor must correct before final acceptance and final payment.

An agreement paying the contractor a fixed amount per measured unit of work, such as per cubic yard of excavation, with total value depending on actual quantities installed.

The systematic measurement of materials and labor quantities from drawings and specifications, forming the basis of an estimate by applying unit costs to measured items.

A reserve of money or time set aside in an estimate or schedule to absorb identified but unquantified risks such as weather delays, design gaps, or price escalation.

A written, signed modification to the contract scope, price, or schedule issued after execution, requiring owner approval before the changed work proceeds.

A formal written query from the contractor to the design team seeking clarification of ambiguous, conflicting, or missing information in the contract documents, with responses becoming part of the record.

A scheduling technique that maps activities and dependencies to identify the longest continuous sequence of work, whose duration sets the project completion date and drives float calculations.

The amount of time an activity can slip without delaying the project finish; activities on the critical path have zero total float and consume schedule slack when delayed.

A short-interval, typically two-to-six-week planning tool derived from the master schedule that details upcoming activities, crew assignments, and constraints to coordinate field execution.

Two excavation protective systems: benching cuts stepped terraces into the soil, while shoring installs vertical supports and sheeting to hold back earth in deeper or unstable cuts.

An individual designated by the employer who can identify existing and predictable hazards and has authority to take prompt corrective action, required for daily excavation and scaffold inspections.

The widened lower portion of a foundation that transfers building loads to bearing soil, sized so soil pressure stays within allowable capacity and placed below frost depth where required.

Application of a continuous membrane or coating to below-grade or wet-area surfaces to prevent water passage, distinct from dampproofing, which only resists capillary moisture.

A low-permeance sheet or coating installed to limit moisture diffusion through an assembly, commonly placed under slabs or on the warm side of insulation in humid climates.

A highly conductive path such as steel studs, slab edges, or balconies that bypasses insulation and increases heat flow, degrading assembly performance and risking condensation on cold surfaces.

Rigid insulation installed outboard of structural framing and sheathing as an uninterrupted layer, reducing thermal bridging and shifting the dew point outward in the wall assembly.

A field test measuring the vertical settlement of a molded concrete cone, indicating workability and consistency; values outside specification limits may signal improper water content.

The mass of water divided by the mass of cementitious material in a concrete mix; lower ratios increase strength and durability while reducing workability.

Maintaining adequate moisture and temperature in concrete after placement so cement hydration continues, developing design strength and reducing cracking and surface defects.

The thickness of concrete between the outermost reinforcement and the exposed surface, protecting steel from corrosion and fire and ensuring bond with surrounding concrete.

The layer of mortar bonding masonry units, whose thickness and tooling affect compressive strength, water penetration resistance, and appearance of the finished wall.

Impervious material installed at roof edges, wall openings, and transitions to direct water away from the building interior, often integrated with weep holes in masonry cavity walls.

Wood light-frame construction in which each floor is built as a separate platform of joists and subflooring, providing a working surface and allowing sequential story-by-story erection.

An older wood framing method using continuous studs running from foundation to roof with floor joists nailed to the studs, creating long concealed wall cavities that require fireblocking.

A wall assembly designed to resist lateral loads from wind and seismic forces by transferring shear from diaphragms to the foundation, often sheathed with structural panels and hold-downs.

A thin-gauge steel shape formed by bending sheet steel into C or track profiles, used for framing walls and partitions with high strength-to-weight ratio and noncombustible properties.

Systems such as guardrails, personal fall arrest, and safety nets required when workers are exposed to falls of six feet or more, including leading edges and roof work.

A space with limited entry and exit, not designed for continuous occupancy, where atmospheric hazards may exist; entry requires testing, permits, and a trained attendant.

A standard addressing electrical safety in the workplace, covering approach boundaries, arc flash risk assessment, and required personal protective equipment for energized work.

A procedure isolating hazardous energy sources with locks and tags before maintenance or servicing, preventing unexpected energization of equipment and injury to workers.

Approved materials and assemblies installed to seal penetrations and joints in rated walls and floors, restoring the fire-resistance rating and limiting smoke spread.

A continuous, unobstructed path connecting accessible elements and spaces that meets slope, width, and surface requirements under accessibility standards.

A project-specific detail drawing prepared by a contractor or fabricator showing fabrication, installation, and dimensions, submitted for design professional review before construction.

The formal process of transmitting product data, samples, shop drawings, or mockups to the design team for approval, ensuring materials conform to specifications before installation.