AR General Contractor study materials
AR General Contractor study resources

AR General Contractor key terms

AR General Contractor · Get comfortable with the vocabulary.

Mechanic's Lien

A legal claim filed against a property by a contractor, subcontractor, or supplier who was not paid for labor, materials, or services that improved the property. It can force a sale of the property to satisfy the debt.

Related: Retainage, Performance Bond, Substantial Completion
Performance Bond

A surety bond guaranteeing that a contractor will complete a project according to the contract terms. If the contractor defaults, the surety pays the owner up to the bond amount to finish the work.

Related: Contractor License, Substantial Completion, Mechanic's Lien
Change Order

A written, signed amendment to the contract that modifies the scope, price, or schedule of the work. Both owner and contractor typically must approve it before the changed work proceeds.

Related: Addendum, Request for Information (RFI), Allowance
Retainage

A percentage of each payment withheld by the owner until the project reaches substantial completion or final acceptance. It protects the owner against incomplete work and unresolved claims.

Related: Substantial Completion, Schedule of Values, Mechanic's Lien
Substantial Completion

The stage when the work is sufficiently complete for the owner to use it for its intended purpose, with only minor items remaining. It often starts warranty periods and allows release of retainage.

Related: Punch List, Retainage, Project Closeout
Indemnification

A contract clause where one party agrees to cover losses, damages, or legal costs another party may suffer from specified events. It shifts risk among owner, contractor, and subcontractors.

Related: Performance Bond, Mechanic's Lien
Addendum

A written modification to bidding or contract documents issued before bids are opened, such as a revised drawing or corrected specification. Bidders must acknowledge it in their proposal.

Related: Specification, Change Order
Contractor License

A credential issued by the Arkansas Contractors Licensing Board that authorizes a person or company to bid and perform construction work above set cost thresholds. It requires proven experience, exams, and insurance.

Related: Performance Bond, Mechanic's Lien
Critical Path Method (CPM)

A scheduling technique that identifies the longest sequence of dependent activities in a project. Delays on this path push the project completion date unless the schedule is adjusted.

Related: Float, Change Order
Float

The amount of time an activity can be delayed without delaying the project completion date or a later activity. Activities on the critical path have zero float.

Related: Critical Path Method (CPM), Change Order
Submittal

Product data, shop drawings, samples, or mockups the contractor sends to the design professional for review and approval before materials or equipment are installed on the project.

Related: Request for Information (RFI), Specification, Project Closeout
Request for Information (RFI)

A formal written question from the contractor to the designer asking for clarification of drawings, specifications, or contract requirements. The answer becomes part of the project record.

Related: Submittal, Addendum, Change Order
Punch List

A written list of minor incomplete or defective work identified near the end of a project that the contractor must correct before final acceptance and final payment.

Related: Substantial Completion, Project Closeout
Schedule of Values

An itemized breakdown of the contract price allocated to each portion of the work. It is used to review progress payments based on the percentage of work completed.

Related: Retainage, Quantity Takeoff
Project Closeout

The final phase of a project where the contractor completes punch list items, submits warranties, as-built drawings, and final documentation, and turns the project over to the owner.

Related: Punch List, Substantial Completion, Submittal
Quantity Takeoff

The process of measuring and counting the materials and labor needed from drawings and specifications to produce a detailed estimate. Accuracy here strongly affects bid price and profit.

Related: Unit Price, Drawing Scale, Contingency
Contingency

A percentage or lump sum added to an estimate to cover unknown costs such as unforeseen conditions, price changes, or minor design gaps. It is not meant to fund added scope.

Related: Allowance, Quantity Takeoff
Allowance

A specific dollar amount included in a contract for work or materials not yet fully defined, such as light fixtures. The actual cost is reconciled later and the contract price adjusts.

Related: Contingency, Change Order
Unit Price

A fixed cost per measured unit of work, such as dollars per cubic yard of concrete. Multiplying the unit price by the quantity gives the total cost for that item.

Related: Quantity Takeoff, Allowance
Plan View

A drawing that shows the project as seen from directly above, displaying layout, dimensions, and the locations of walls, openings, and equipment.

Related: Elevation Drawing, Drawing Scale
Elevation Drawing

A drawing showing the vertical face of a building or interior wall, including heights, finishes, and the vertical arrangement of doors, windows, and materials.

Related: Plan View, Specification
Specification

A written document describing the quality, materials, standards, and workmanship required for the project. It complements the drawings, and together they define the full scope of work.

Related: Addendum, Submittal, Plan View
Drawing Scale

The ratio that relates a distance measured on a drawing to the actual distance it represents, such as one-quarter inch equals one foot. Using the wrong scale causes major estimating errors.

Related: Plan View, Quantity Takeoff
Slump Test

A field test that measures the consistency and workability of fresh concrete by filling a standard cone, removing it, and measuring how far the concrete settles.

Related: Curing, Formwork
Curing

The process of keeping concrete moist and at a suitable temperature after placement so it develops strength and durability. Proper curing reduces cracking and improves long-term performance.

Related: Slump Test, Formwork
Formwork

Temporary molds, usually wood or metal, that hold fresh concrete in the desired shape and position until it hardens enough to support itself and construction loads.

Related: Curing, Footing
Footing

The widened lower portion of a foundation that spreads building loads over a larger soil area, reducing settlement and preventing excessive pressure on the ground beneath the structure.

Related: Formwork, Compaction
Compaction

Mechanical densification of soil or fill by removing air voids, usually with rollers or tampers. Proper compaction increases bearing capacity and reduces settling under foundations and slabs.

Related: Footing, Vapor Barrier
Vapor Barrier

A low-permeability sheet material placed under a slab or in a crawl space to block moisture movement from the soil into the building. It helps prevent dampness, mold, and floor finish failures.

Related: Compaction, Footing
Load-Bearing Wall

A wall that supports structural loads from above, such as floors and roof, and transfers them to the foundation. Removing or altering it without proper design can cause collapse.

Related: Footing, Formwork
Competent Person

An individual designated by the employer who can identify existing and predictable hazards and has authority to take prompt corrective action, as required by OSHA construction standards.

Related: Fall Protection, Excavation Protective System, Confined Space
Fall Protection

Systems and practices that prevent workers from falling from heights, including guardrails, safety nets, personal fall arrest, and safe work procedures. OSHA requires it at six feet in construction.

Related: Personal Protective Equipment (PPE), Competent Person
Excavation Protective System

A method such as sloping, benching, shoring, or a trench box used to protect workers from cave-ins in excavations. It is required at five feet deep unless stable rock is present.

Related: Competent Person, Confined Space
Confined Space

A space with limited entry and exit that is not designed for continuous occupancy, such as a tank or manhole. Entry may require atmospheric testing, a permit, and an attendant.

Related: Competent Person, Hazard Communication
Personal Protective Equipment (PPE)

Clothing and gear worn to reduce exposure to workplace hazards, such as hard hats, safety glasses, gloves, and respirators. Employers must provide it, train workers, and enforce its use.

Related: Fall Protection, Hazard Communication
Hazard Communication

The OSHA-required program that ensures workers know about chemical hazards through container labels, safety data sheets, and training. It applies to hazardous chemicals used or stored on site.

Related: Personal Protective Equipment (PPE), Confined Space
Stormwater Pollution Prevention Plan (SWPPP)

A site-specific plan required under stormwater permits that identifies pollution sources and describes best management practices, inspections, and controls to keep sediment and pollutants out of runoff.

Related: Excavation Protective System