A bridge or structural design where a curved arch is connected to a horizontal tension member, preventing the arch from spreading. Subcontractors may encounter tied-arch structures on pipeline crossings, access bridges, or heavy industrial sites. Rigging, lifting, and load planning must account for the unique stress distribution in these structures.
Tied-Arch
Related Terms
Oil-Directed Drilling
IndustryA drilling programme targeting oil reservoirs rather than natural gas. Subcontractors can expect higher rig activity and longer campaign durations in regions where oil prices justify development. Demand for completions, fluid hauling, and wellsite services typically rises during oil-directed cycles.
Alliance Construction Contract
IndustryA collaborative agreement where owners, contractors, and subcontractors share project risks and rewards under a no-blame framework. Subcontractors may receive performance bonuses but also absorb a portion of cost overruns. Transparency in costs and open-book accounting are typically required.
MBO (Management Buyout)
IndustryA transaction where a company's existing managers purchase the business from its owners. For subcontractors, this often signals continuity in contracts and key relationships. Watch for changes to payment terms or procurement policies during the transition period.
Cold Milling
IndustryA surface removal process where a rotating drum grinds down asphalt or concrete without heat. Subcontractors use it for road rehabilitation, pad preparation, and surface levelling on well sites or construction projects. Reclaimed material is often reused, reducing disposal costs.
Interoperability
IndustryThe ability of different software systems, tools, or equipment to work together without manual workarounds. For subcontractors, this means your timesheets, invoicing, and reporting tools can connect directly with a prime contractor's systems. It reduces double-entry errors and speeds up approvals and payments.
ROV (Remotely Operated Vehicle)
IndustryAn unmanned, tethered underwater robot used to inspect, survey, or perform work on subsea pipelines, wellheads, and structures — subcontractors providing ROV services typically require specialised operators and vessels, and should account for mobilisation costs and standby rates when bidding these scopes.
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