General best-practice steps for handling, cutting, placing, and tying GFRP rebar on a construction site. Always follow your project's structural drawings and specifications, which take precedence over this general guide.
Tools & Supplies
Tools
- Abrasive cut-off saw or angle grinder with a diamond/fiber-cutting wheel
- Tape measure and marking crayon/marker
- Rebar tying tool or manual tie wire twister
- Concrete vibrator (for placement/consolidation)
Supplies
- GFRP rebar (correct diameter and grade per drawings)
- Corrosion-resistant tie wire or zip ties
- Rebar chairs / spacers for correct concrete cover
- Personal protective equipment (gloves, safety glasses, dust mask)
Installation Steps
1. Inspect and Store Rebar Properly
Check delivered GFRP rebar for shipping damage, and store it on flat, supported racks off the ground, away from direct sunlight and extreme heat, until it's ready for use.
2. Cut to Length
Measure and mark the required lengths per the structural drawings. Cut GFRP rebar with an abrasive cut-off saw or angle grinder fitted with a diamond or fiber-cutting wheel. Avoid impact tools such as bolt cutters, which can crush and delaminate the cut end. Note that GFRP rebar cannot be field-bent - any bent shapes (stirrups, L-bars, U-bars) must be factory pre-bent to spec.
3. Position Rebar and Set Cover
Place the rebar in position according to the structural drawings, using rebar chairs or spacers to maintain the specified concrete cover on all sides.
4. Tie Rebar Intersections
Secure rebar intersections with corrosion-resistant tie wire or zip ties so the reinforcement cage holds its shape and position during the concrete pour.
5. Verify Lap Splices
Where bars are spliced, confirm the lap length meets the project's design requirements - GFRP rebar generally needs a longer lap splice than steel of the same diameter. Confirm the exact length with your structural engineer.
6. Pour and Consolidate Concrete
Pour concrete carefully to avoid displacing the rebar cage, and consolidate with a vibrator to eliminate voids while keeping spacers and ties intact.
7. Cure Concrete
Cure the concrete following standard curing practice for the mix design and site conditions used on the project.
Need Project-Specific Guidance?
Installation details vary by project, diameter, and application. Our team can review your drawings and provide specification and handling guidance for your GFRP rebar order.
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