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IndustryGlossary Term

Aggregates

Crushed stone, gravel, and sand used as base materials in construction and oil and gas site preparation. Subcontractors sourcing or hauling aggregates must account for material costs, transport, and site access conditions. Pricing and availability vary significantly by region and project remoteness.

Related Terms

Retrofit

Industry

Upgrading or modifying existing equipment to meet new specs, safety standards, or operational requirements. Subcontractors are often hired specifically for retrofit scopes on aging infrastructure. Work may require specialised certifications and careful coordination with the client's existing systems.

RAP (Reclaimed Asphalt Pavement)

Industry

Milled or crushed material salvaged from existing asphalt surfaces during road removal or rehabilitation work. Subcontractors reuse RAP as base material or blend it into new asphalt mixes, reducing material costs. Proper handling and testing requirements may apply depending on project specs.

Spot Work

Industry

Short-term, unplanned jobs awarded without a long-term contract, typically filled on short notice. Subcontractors are engaged for a single scope or site visit at a negotiated day rate. Common in shutdown, turnaround, and emergency maintenance situations.

Predictive Maintenance

Industry

A maintenance approach that uses equipment data and monitoring to forecast failures before they occur. Subcontractors may be dispatched for targeted repairs based on sensor alerts rather than fixed schedules. This reduces emergency callouts and helps crews plan mobilisation more efficiently.

Prime Contract

Industry

The main agreement between an owner (operator or developer) and the general contractor managing a project. As a subcontractor, you work under this contract without being party to it. Its terms often flow down and directly affect your scope, schedule, and payment conditions.

In-Service Date

Industry

The date when equipment or a facility is officially commissioned and begins active operation. For subcontractors, this date often triggers billing milestones, warranty periods, or contract close-out requirements. Missing this date can result in penalties or delayed final payment.

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