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IndustryGlossary Term

Primary Term

The fixed initial period of a service contract during which either party is typically locked in. For subcontractors, it sets the guaranteed window to recover mobilisation costs and generate revenue. Work orders or rates often cannot be renegotiated until this period expires.

Related Terms

AWP (Aerial Work Platform)

Industry

A powered, elevated platform used to lift workers and tools to height for maintenance, construction, or inspection tasks. Common AWP types include scissor lifts, boom lifts, and man baskets. Subcontractors must verify operator certification and equipment inspection records before mobilising an AWP on site.

Schedule Compression

Industry

When a project owner shortens the original timeline without reducing scope. Subcontractors must mobilise more crew, run shifts, or overlap tasks to meet the new dates. This often triggers overtime costs and equipment conflicts that may not be covered under the original contract.

Progressive Design-Build

Industry

A project delivery method where design and construction phases overlap, with the owner and contractor collaborating before scope is fully defined. Subcontractors are often brought on early, meaning scope, pricing, and schedules can shift as design matures. Contracts may be cost-reimbursable at first, then convert to fixed-price once scope is confirmed.

Substrate

Industry

The base material or surface that a coating, lining, or treatment is applied to, such as steel pipe, concrete, or wood. Subcontractors must assess substrate condition before starting surface prep or application work. Poor substrate quality can affect adhesion, warranty, and job acceptance.

Bore Path

Industry

The planned underground route a drill bit follows during horizontal directional drilling (HDD). Subcontractors use bore path data to plan equipment placement, crew positioning, and utility clearances. Deviations from the bore path can trigger rework costs and schedule delays.

Wall Thickness Assessment

Industry

An inspection process that measures remaining material thickness in pipes, vessels, or structural components to detect corrosion or erosion. Subcontractors are often hired to perform these assessments using UT (Ultrasonic Testing) equipment. Results determine whether assets require repair, replacement, or continued monitoring.

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