OSHA 29 CFR 1926.703 Cast-in-Place Concrete Bidding Checklist
Estimating cast-in-place concrete packages requires accounting for structural safety protocols long before concrete trucks arrive on site. Federal standards under eCFR 29 CFR 1926.703 establish strict mandates for formwork stability, tiered shoring designs, and stripping procedures. For general contractors and specialty trade estimators, failure to account for these mandatory activities can lead to unbudgeted jobsite costs. Use this checklist-driven guide to verify that all necessary engineering, inspection, and equipment items are captured in your project bid.
Formwork Planning and Jobsite Documentation Checklist
Before any forms are erected, federal safety standards outline specific design and documentation requirements that must be physically present at the project location:
- Vertical and lateral load capacity: Verify that formwork is designed, fabricated, erected, supported, braced, and maintained to support without failure all vertical and lateral loads that may reasonably be anticipated. The non-mandatory appendix to § 1926.703(a)(1) notes that formwork complying with Sections 6 and 7 of ANSI A10.9-1983 (American National Standard for Construction and Demolition OperationsâConcrete and Masonry Work) meets this standard.
- Jobsite plans: Ensure your project overhead accounts for maintaining working drawings and plans on site. Under 29 CFR 1926.703, drawings or plansâincluding all revisionsâfor the jack layout, formwork (including shoring equipment), working decks, and scaffolds must be available at the jobsite.
Capturing the administrative and printing time to manage revisions on the jobsite belongs in your site supervision allowances, as detailed in our guide to estimating general conditions.
Shoring Erection and Multi-Stage Inspection Checklist
Shoring compliance requires recurring field inspections and rigid structural alignment. Your labor estimate must carry the hours required to inspect, adjust, and reinforce support equipment:
- Pre-erection inspection: All shoring equipment, including gear used in reshoring operations, must be inspected prior to erection to verify it meets the formwork drawings. Damaged equipment that reduces strength below the required threshold cannot be used.
- Pour-cycle inspections: Dedicated inspection labor must be budgeted immediately prior to, during, and immediately after concrete placement. Any shoring found damaged or weakened after erection must be reinforced immediately.
- Sill and hardware contact: Sills must be sound, rigid, and capable of carrying the maximum intended load. Base plates, shore heads, extension devices, and adjustment screws must maintain firm contact and be secured to the foundation and form when necessary.
- Loading alignment: Eccentric loads on shore heads and similar members are strictly prohibited unless the members are explicitly designed for that loading. In addition, single post shores cannot be adjusted to raise formwork after concrete has been placed.
Tiered Single Post Shore Engineering Checklist
When forms require single post shores stacked one on top of another (tiered), OSHA mandates specialized engineering oversight that must be identified during the takeoff phase:
- Professional design and inspection: Tiered shoring requires a design prepared by a qualified designer, and the fully erected assembly must be inspected by an engineer qualified in structural design.
- Vertical alignment and splicing: Tiered shores must be vertically aligned and spliced to prevent misalignment.
- Two-direction bracing: Spliced posts must be adequately braced in two mutually perpendicular directions at the splice level. Furthermore, each tier must be diagonally braced in the same two directions.
Vertical Slip Forms and Reinforcing Steel Safety Checklist
When estimating elevated vertical elements, slip forms, or reinforcing steel, review your bid items against these operational requirements:
- Climbing supports and jacks: Steel rods or pipes used by lifting jacks must be designed specifically for that purpose and braced where not encased in concrete. Jacks and vertical supports must not exceed their rated capacity.
- Holding devices: Lifting jacks must feature mechanical dogs or automatic holding devices to support slip forms if the power supply or lifting mechanism fails.
- Plumbness and platform requirements: Scaffolds or work platforms must be provided wherever employees work or pass. Forms must be held within specified design tolerances for plumbness during jacking, without exceeding the predetermined safe rate of lift.
- Reinforcing steel protection: Reinforcing steel for walls, piers, columns, and vertical structures must be adequately supported against overturning and collapse. For slab work, your crew setup must include measures to prevent unrolled wire mesh from recoiling, such as securing each roll end or turning the roll over.
Form Removal and Reshoring Release Checklist
Forms and shores cannot simply be stripped on a fixed calendar schedule without verified material verification:
- Strength determination: Forms and shores (excluding slabs on grade and slip forms) cannot be removed until the employer determines that concrete has gained sufficient strength to support its own weight and superimposed loads.
- Verification criteria: This determination must follow either the stipulations in project plans and specifications, or compressive strength test results using an appropriate ASTM standard test method.
- Reshoring retention: Reshoring must be erected as original forms and shores come down whenever concrete must carry loads beyond its current capacity, and reshores cannot be pulled until concrete reaches adequate strength.
If testing services or engineering approvals are to be handled by the general contractor rather than your firm, clearly define those boundaries using our checklist for bid exclusions and clarifications.
Sources
Published October 28, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.