Earthwork Production Unit Cost
Joins the equipment hourly rate to the hourly production into the unit cost a bid needs: unit cost ($/cy) = (equipment + operator + support $/hr) / production (cy/hr). A dozer at $215/hr all-in moving 656 cy/hr costs $0.33/cy, but let production fall to 400 cy/hr on soft ground and it costs $0.54/cy - a 63% jump the rate alone never shows. Low production, not the rate, is what blows up the unit price.
Formula and source
hourly_cost = equipment_rate_per_hr + operator_rate_per_hr + support_rate_per_hr; unit_cost_per_cy = hourly_cost / production_cy_per_hr; total_cost = unit_cost_per_cy x total_cy.
Production unit-cost identity by name (unit cost = hourly cost / production); first-principles cost arithmetic.
Audience
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Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.