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TL;DR: Structural steel job costing by connection type and elevation reveals production variance that blended totals hide. Ground floor moment connections run at 14 per crew-day. Upper floor connections at elevation 80 feet run at 9 per crew-day due to crane cycle time and access. Without cost codes by elevation that variance is invisible until closeout when it is history. SPM builds ControlQore cost codes aligned to the structural steel estimate at engagement start.

Structural Steel Job Costing

Connection Count Job Costing for
Structural Steel Contractors.

Blended structural steel job cost hides where the production rate fell short. Connection count by elevation reveals in week two when upper floor rates are below estimate and a sequence change order is possible.

Published: May 2026 · Updated: May 2026

The Problem

Three Ways Structural Steel Contractors Lose Margin

Blended Connection Rate Hides Elevation Variance

Total steel erection labor for the week divided by total connections made gives a blended rate. Ground floor connections ran at 14 per crew-day. Upper floor connections at elevation 80 feet ran at 9 per crew-day due to crane cycle time, wind exposure, and access constraints. The blended rate of 11.5 per crew-day does not identify the upper floor underperformance.

Fabrication Deposit Cash Flow Not in SOV

A 40% fabrication deposit on a $280,000 structural package means $112,000 goes to the fabricator before any steel arrives. The GC-drafted SOV has one structural steel line item billed at substantial completion of erection. You fund the fabrication deposit from operating cash for 8-12 weeks before the first billing event.

Erection Sequence Change Not Submitted as Change Order

The GC revised the erection sequence twice to accommodate other trades. Each revision required crane repositioning, re-rigging, and 4-6 hours of additional crane time at $320 per hour. Those 12 hours of additional crane cost were never submitted as a change order because the sequence changes were verbal and the cost accumulation was not tracked.

The Fix

How SPM Builds the Job Costing System

ControlQore cost codes by connection type and elevation. Bolted connections by type, welded connections by type, deck installation by SF, and column erection by piece - each tracked by building zone and elevation. Connection count per crew-day posts weekly against estimated rate by elevation. When upper floor connections are running at 9 per crew-day against a 13 per crew-day estimate SPM flags it and evaluates whether a productivity change order applies.

Fabrication deposit as a separate SOV line. Fabrication deposit negotiated as a separate SOV line item billed at deposit payment. A $112,000 fabricator deposit should produce a $112,000 billing event when the deposit is made - not when the steel arrives and not at erection completion. SPM negotiates this on every structural steel contract before execution.

Erection sequence change documentation. Written GC notice within 24 hours of verbal sequence change request. Crane time and crew cost impact calculated at time of request. Cost proposal submitted before the sequence change is implemented. Most erection sequence changes are directed changes that are recoverable if documented at occurrence.

FAQ

Frequently Asked Questions

How should structural steel contractors set up job costing?

Job costing by connection type and elevation in ControlQore: bolted connections by type, welded connections by type, deck installation by SF, and column erection by piece - each tracked by building zone and elevation. Foremen log actual connections made and equipment hours daily. Weekly: actual connections per crew-day against estimated rate by elevation.

What causes structural steel production rates to vary by elevation?

Three consistent causes: crane cycle time increases with elevation because the crane takes longer to swing and set iron at height, wind exposure at higher elevations reduces productive work hours, and connection geometry on upper floors is sometimes more complex due to moment frame requirements at roof level.

How does fabrication deposit affect structural steel cash flow?

A 40% fabrication deposit on a $250,000-$400,000 structural package represents $100,000-$160,000 out the door before steel arrives. If the SOV does not include a fabrication deposit billing line the contractor funds the deposit from operating cash for 8-12 weeks. SPM eliminates this gap by negotiating the fabrication deposit as a front-loaded SOV line item billed at deposit payment.

What is a good connection rate for structural steel erectors?

Bolted moment connections at grade: 12-16 per crew-day under good conditions. At elevation 40-60 feet: 10-14 per crew-day. At elevation 80+ feet: 8-12 per crew-day. Welded connections run 40-60% slower than bolted connections. These rates vary significantly by connection complexity, crane availability, and site conditions. Your actual production data from ControlQore is more accurate than industry benchmarks for your specific crews.

Connection Count Job Costing forStructural Steel Contractors.