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Delay & Disruption

Order-of-magnitude cost estimate for delays: labour disruption, prelims, plant, rework, and OH&P markup.

Delay Duration

weeks

Working Days / Week

d/wk

Site Hours / Day

h/d

Average Headcount

no.

Labour Cost Rate

£/hr

All-in (wages + oncosts)

Idle / Disruption Factor

100 % = fully idle, 30 % = partially disrupted

Site Prelims

£/wk

Welfare, temp utilities, etc.

Supervision / PM

£/wk

Plant / Hire Extension

£/wk

Rework / Abortive Works

OH&P on Claim

Optional markup (varies by contract)

Notes

Enter headcount to estimate delay cost