WELD INSPECTION COST ALLOCATION: ERECTION STABILITY AND THE SUBPART R BURDEN
OSHA Subpart R and AISC's Code of Standard Practice put erection-phase stability on the erector: temporary bracing until the permanent system is in (COSP 7.10), minimum-bolt rules before releasing crane load, plumb tolerances (1:500).
This page covers one problem. The full picture for this trade, including the other places margin leaks, is on the structural steel operating system page.
WHERE THE MONEY GOES.
OSHA Subpart R and AISC's Code of Standard Practice put erection-phase stability on the erector: temporary bracing until the permanent system is in (COSP 7.10), minimum-bolt rules before releasing crane load, plumb tolerances (1:500). Connection details drawn for structural efficiency without erection sequence in mind create field hazards and rework, and the erector eats the field fix unless the paper trail points back at the detailer.
THE COST, SOURCED.
"Fabricators who design connections purely for structural efficiency without considering erection sequence create field safety hazards and OSHA citation exposure." (2026 fabrication guide) "The erector is responsible for stability until the permanent system is in place." (AISC COSP 7.10 summary)
THE NUMBER TO MEASURE IT AGAINST.
Structural Steel contractors run about % net profit at $1M to $5M, rising to roughly 10% at $5M to $10M. The CFOS target at $1M to $5M is10%, set at 10 percent before taxes or 3.5 points better than your trade's average at your revenue, whichever is higher. A problem like this one lives in the distance between those two figures rather than in a loss on any single job.
Gross margin over the same bands runs % to 24%, against a CFOS target of 10%.
THE SYSTEM THAT FIXES THIS.
Cost codes built against the estimate, so a job can be read while it runs.
FREQUENTLY ASKED.
