Commercial & Industrial Construction Glossary

A document issued before contract award that modifies or clarifies the bid documents.

A layer of crushed stone or gravel placed beneath pavements or slabs to provide structural support and drainage.

A continuous system that restricts uncontrolled air movement through the building envelope.

A piece of HVAC equipment that conditions and circulates air as part of a heating or cooling system.

A budget placeholder for a material or scope that has not been fully defined at the time of contracting.

An option to the base bid that offers a different material, system, or scope which may increase or decrease cost.

Drawings revised to show the actual locations and details of installed work at project completion.

A switch that transfers electrical loads from utility power to generator power automatically during an outage.

Material placed into excavated areas around foundations or utilities after installation is complete.

A valve assembly that prevents contaminated water from flowing backward into clean water systems.

The approved version of the project schedule used to measure progress and evaluate delays.

A horizontal structural element designed to carry loads across an opening and transfer them to supports.

Equipment that heats water or produces steam for building heating or industrial processes.

The process of projecting future project costs based on current performance and trends.

The central area of a multi-story building that typically houses elevators, stairs, restrooms, and mechanical rooms.

All exterior components that separate the conditioned interior from the outdoors, including walls, roof, windows, and doors.

A multi-year plan that prioritizes and budgets major facility upgrades or expansions.

Concrete that is poured, formed, and cured at the construction site rather than delivered as precast elements.

An official document issued by the authority having jurisdiction confirming that the building meets code and is safe to occupy.

A formal modification to the original contract that adjusts project cost, scope, or timeline.

A machine that removes heat from water to provide chilled water for air conditioning or process cooling.

The exterior material layer applied to a building to provide protection and aesthetic finish.

A controlled environment with tightly managed particulate and contamination levels for sensitive production or research.

The collection of as-built drawings, warranties, manuals, test reports, and final documentation delivered at project completion.

A warehouse or room designed to maintain low temperatures for refrigerated or frozen products.

A vertical structural member that transfers compressive loads from beams or slabs down to the foundation.

A systematic process that verifies building systems are installed, tested, and performing as intended.

The densification of soil using mechanical equipment to increase strength and reduce settlement.

Equipment and piping that provide pressurized air for tools, machines, and processes.

A modular concrete block used to build structural or non-structural walls.

A controlled procedure for working safely in spaces that are not designed for continuous occupancy.

A construction professional who supervises planning, budgeting, scheduling, and execution to ensure the project meets the owner’s objectives.

A designated space designed to contain spills or releases of hazardous materials.

A reserve amount included in the budget to cover unforeseen conditions or additional costs.

A mechanical system that moves materials or products along a fixed path through a facility.

A scheduling technique that identifies the longest path of dependent activities that determines overall project duration.

A non-structural exterior wall system that hangs from the building frame and resists environmental forces.

The earthwork operation of cutting high areas and moving that soil to fill low areas to achieve design grades.

A day-by-day record of manpower, work performed, weather, and issues on the job site.

Metal or wood panels attached to structural framing to create a surface for floors or roofs.

A traditional project delivery method involving separate phases for design, competitive bidding, and construction.

A project delivery method in which one entity manages both design and construction to streamline communication and reduce risk.

The process of removing groundwater from an excavation to create a dry and stable work area.

A formal request for payment from the lender or owner based on completed and documented work.

A network of metal or fiberglass ducts that distributes conditioned air throughout the building.

Industrial equipment that captures and filters airborne dust generated by manufacturing processes.

A legal right that allows another party to use a portion of property for utilities, access, or other specific purposes.

The point where electrical power from the utility connects to the building’s electrical system.

A control system that monitors and manages energy use across building systems to improve efficiency.

Meeting legal and regulatory requirements related to air, water, waste, and emissions.

Measures such as silt fence, riprap, and matting used to prevent soil from being washed or blown away.

The removal of soil or rock to create space for foundations, utilities, or underground structures.

A designed separation in the structure that allows movement from temperature changes or settlement without damage.

Components designed to contain ignition sources and prevent explosions in hazardous environments.

The outward-facing exterior of a building, often designed for aesthetics and branding as well as performance.

A detailed evaluation of a facility’s physical condition, system performance, and repair needs.

A long-term strategy that defines inspection, service, and replacement intervals for building systems.

Equipment and methods used to prevent or arrest falls from elevated work areas.

A system that detects and controls fires using sprinklers, clean agents, or other methods.

Construction that meets strict sanitary and materials standards for food processing facilities.

The widened portion at the base of a foundation that spreads building loads into the supporting soil.

A licensed professional or firm responsible for overseeing the entire construction project, including subcontractor management, scheduling, budgeting, and quality control.

Standby power equipment that provides electricity when utility power is lost.

An engineering study that evaluates subsurface soil and groundwater conditions and provides foundation recommendations.

A horizontal structural member attached to columns in a metal building to support wall sheeting.

The process of shaping the ground to achieve design elevations, slopes, and proper drainage.

A contract in which the contractor guarantees that the total project cost will not exceed an agreed-upon maximum amount. The owner pays actual costs plus a fee, up to the GMP, with any overages covered by the contractor unless caused by approved scope changes.

A program that ensures workers know about chemical hazards and how to protect themselves.

Building design that meets codes for areas where flammable gases, vapors, or dust may be present.

A device that transfers heat between indoor and outdoor environments to provide heating and cooling.

A building with extra tall clear heights designed for racking, cranes, or large equipment.

Written authorization required for welding, cutting, or other operations that can create ignition sources.

Heating, ventilation, and air conditioning equipment used to control temperature, humidity, and indoor air quality.

A heating or cooling system that circulates water through pipes and heat exchangers.

A written record documenting an accident, near miss, or unsafe condition on the job site.

The use of control systems, sensors, and software to operate equipment with minimal human intervention.

An intermediate elevated floor used to add storage, office, or production space inside a facility.

Mechanical systems that remove heat, fumes, and contaminants from work areas.

A step-by-step review of a task to identify hazards and define safe work practices.

A horizontal structural member that supports floors or roofs and transfers loads to beams or walls.

The upgrade of existing lighting fixtures with LED technology to increase efficiency and reduce maintenance.

An evaluation of the total cost of owning, operating, and maintaining a building component over its life.

A system of controls, sensors, and schedules that manages lighting levels and energy use.

A wall that carries structural loads from floors or roofs above down to the foundation.

A safety procedure that ensures equipment is de-energized and cannot be started during maintenance.

A coordinated plan that defines how materials, equipment, and people move to and within the site.

Physical barriers and devices that protect workers from moving parts of machinery.

The primary electrical panel that distributes power to subpanels and branch circuits.

An HVAC unit that supplies fresh outside air to replace air exhausted from the building.

Forklifts, pallet jacks, conveyors, and other tools used to move and store materials.

Written notes that capture discussions, decisions, and action items from project meetings.

The mechanical, electrical, and plumbing systems that provide heating, cooling, power, water, and waste removal in a building.

A structural frame with rigid connections that resist rotation and provide lateral stability without shear walls.

A wall that divides spaces but does not support structural loads.

A set of instructions and documentation for operating and maintaining building systems and equipment.

Adherence to safety regulations issued by the Occupational Safety and Health Administration.

A crane installed on elevated runways inside a building to lift and move heavy loads.

A third-party advocate who protects the owner’s interests by overseeing project decisions, costs, and timelines.

The installation of asphalt or concrete surfaces for roads, driveways, and parking lots.

Clothing and gear such as helmets, gloves, and eye protection used to reduce exposure to hazards.

The installation of water supply, waste, and vent piping before walls, ceilings, or slabs are closed.

A concrete system where steel tendons are tensioned after the concrete has cured to increase its load-carrying capacity.

A kickoff meeting to align expectations, roles, communication protocols, and project procedures.

A factory-designed and fabricated steel building system engineered for quick construction and cost efficiency.

Scheduled inspections and service intended to prevent equipment failures and extend service life.

The arrangement of equipment and workstations to optimize productivity and material flow.

Piping that carries chemicals, gases, steam, or other process fluids used in industrial operations.

The process of sourcing, bidding, and purchasing materials, equipment, and subcontracted work.

Invoicing for completed work at regular intervals or milestones during the project.

A financial plan that defines expected costs for labor, materials, equipment, and overhead.

The process of preparing the site and bringing labor, equipment, and temporary facilities to start work.

A timeline that lists project activities, durations, logical relationships, and milestones.

A list of remaining tasks, touch-ups, or corrections that must be completed before final acceptance of the project.

A horizontal roof member in metal buildings that supports roof decking or panels between frames.

The management-level process that establishes quality standards and monitors compliance.

Field inspections and testing that verify work meets project specifications and quality requirements.

The process of re-testing and tuning building systems after years of operation to restore performance.

Concrete that is strengthened with embedded steel bars or mesh to resist tension and increase structural capacity.

A formal question used to clarify plans, specifications, or site conditions when information is missing or conflicting.

A portion of payment withheld from the contractor until the work is substantially or fully complete.

A structure built to hold back soil and maintain different ground elevations on either side.

Land reserved or dedicated for transportation or utility corridors, such as roads and public infrastructure.

A document that identifies project risks and outlines mitigation and response strategies.

The incorporation of industrial robots into production lines for automated tasks.

A pre-engineered triangular framework that supports roof loads and spans between bearing walls or beams.

A document that provides hazard, handling, and emergency response information for a chemical.

Initial training that introduces workers to site-specific rules, hazards, and emergency procedures.

A document that defines all responsibilities, tasks, materials, and deliverables required for a construction project.

A wall designed to resist lateral forces from wind or earthquakes and provide overall building stability.

Temporary structural supports installed to prevent trench or excavation walls from collapsing.

A layout that defines how workers, deliveries, and equipment will safely enter and move around the site.

A concrete slab poured directly on prepared soil that serves as both foundation and floor system.

The treatment of soil with cement, lime, or other agents to improve strength and workability.

Written technical requirements that describe materials, installation standards, and performance expectations for the project.

The process of assembling and installing structural steel members to form the building frame.

A documented plan that outlines practices to prevent stormwater contamination during construction.

Pipes, structures, and basins designed to collect, convey, and treat runoff from rainfall.

Steel beams, columns, and other members that form the primary load-bearing framework of a building.

A specialized trade professional hired by the general contractor to perform specific portions of the work such as electrical, plumbing, or concrete.

The prepared soil surface directly beneath pavement, slabs, or foundations.

Documents, drawings, samples, or technical data submitted for review and approval before materials are ordered or installed.

A group of storage tanks used to hold fuels, chemicals, or other bulk liquids.

A method where concrete wall panels are cast horizontally on site and lifted into vertical position with cranes.

An electrical device that changes voltage levels for safe and efficient distribution within a facility.

Excavating narrow, elongated holes in the ground to install utilities or drainage lines.

Planning and managing the installation and connection of water, sewer, gas, power, and communications to the site.

A structured process used to improve function and reduce cost without sacrificing quality or performance.

A material layer designed to reduce the passage of water vapor through building assemblies.

An HVAC system that uses refrigerant and multiple indoor units to provide zoned heating and cooling.

The time after completion during which the contractor is obligated to correct defects in the work.