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IndustryGlossary Term

Extreme Value Analysis (eva)

A statistical method used to predict the likelihood of rare but severe events, such as equipment failures or extreme weather. Subcontractors use EVA to assess risk exposure and justify contingency planning in bids. It supports decisions around insurance coverage, mobilisation buffers, and site safety protocols.

Related Terms

Utility-Scale Solar

Industry

Large solar power installations, typically 1 MW or greater, built to feed electricity directly into the grid. For subcontractors, these projects involve civil, electrical, and mechanical scopes across remote, fast-paced sites. Crews should expect high headcounts, strict commissioning timelines, and phased work packages.

Berth

Industry

A designated docking space where vessels load or offload equipment, materials, and crew. Subcontractors must coordinate mobilisation schedules around berth availability to avoid costly delays. Port congestion can directly impact your invoicing milestones and crew rotations.

Kelly Bar

Industry

A heavy, telescoping steel rod that transmits rotary torque from a drill rig to the auger or cutting tool. Subcontractors operating foundation or piling rigs must inspect kelly bars regularly for wear and cracking. Damage affects drilling performance and can cause costly downtime on tight project schedules.

EPCM (Engineering, Procurement, Construction Management)

Industry

A project delivery model where one firm manages engineering, procurement, and construction on the owner's behalf. Subcontractors are hired directly by the owner, not the EPCM firm. Understanding this structure clarifies your contract chain, payment authority, and site reporting lines.

Long-Span Structural Systems

Industry

Structural frameworks that cover large distances without intermediate supports, such as trusses, arches, or space frames. Subcontractors encounter these in industrial buildings, processing facilities, and modular plant construction. Work in these areas often requires specialised rigging, elevated access planning, and load-path awareness.

Interconnection Delay

Industry

A postponement caused by unfinished grid or pipeline tie-in work that prevents a facility from going live. For subcontractors, it often means demobilisation holds, scope gaps, or standby costs with no clear end date. Document all waiting time carefully to support delay claims or change orders.

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