*For specifications regarding Owens Corning® Fiberglas™ Rebar Bent Bars, please visit the bent bar page on the website or consult your Owens Corning representative.
Owens Corning® Fiberglas™ Rebar straight bars are available in North America and Europe in the following diameters: #3 (M10), #4 (M13), #5 (M16), #6 (M19), and #8 (M25). Stock lengths of 20’ and 40’ are available. Bars can be cut to length for orders with detailed bar lists.
Straight Bars Technical Characteristics
(ASTM D7957, CSA S807 Grade III)
||Nominal Cross Sectional Area*
||Guaranteed Ultimate Tensile Force*
||Guaranteed Ultimate Tensile Strength*
||Mean Ultimate Tensile Strain*
||Mean Tensile Modulus of Elasticity*
|FIBER MASS CONTENT*
||MOISTURE ABSORBTION IN 24 h at 50 °C [122 °F]*
||MOISTURE ABSORPTION TO SATURATION AT 50 °C [122 °F]**
||MEAN GLASS TRANSITION TEMPERATURE (DSC)*
||MEAN APPARENT HORIZONTAL SHEAR*
||MEAN TRANSVERSE SHEAR STRENGTH*|
Primary materials: E-CR Glass and vinyl ester resin.
Bond strength exceeds ASTM D7957 requirement.
* Provided in production lot QC certifications
** Product characterization tests; not included in production lot QC certifications
Field forming of Large Radius Curves: It is possible to field form the bar into large radius curves. This induces a bending stress in the bar which must be lower/smaller than the creep rupture limit/allowable stresses.
Packaging, Shipping and Labeling
Straight bars will be shipped to the project site in bundles. Bundle sizes vary by bar length and diameter. Bundle
weights usually range from 1,500 lbs. to 3,000 lbs. Lead time is subject to plant production schedules at the time of
order processing. Customer-specific packaging requirements may be available upon request. Material traceability
markings per ASTM D7957 or CSA S807 will be present on straight bars.
Storage and Handling
Product should be covered or stored away from direct sunlight. Follow guidelines in ACI440.5-08, “Specification for
Construction with FRP Bars.” In general, field handling and placement is the same as epoxy coated or galvanized steel bars. However, do not shear fiberglass bars. Field cut fiberglass bars using a fine blade saw, grinder, and carborundum or diamond blade. Sealing the ends of fiberglass bars is not necessary. Place support chairs at two-thirds the spacing of support chairs for steel rebar. Plastic-coated tie wires are the preferred option for most projects. Use plastic or nylon zip ties when required for electromagnetically neutral reinforcing. In precast applications, secure fiberglass bars to the formwork to avoid float during compaction.
When using and handling Owens Corning® Fiberglas™ Rebar, proper personal protective equipment (PPE) is required. Owens Corning® Fiberglas™ Rebar Straight Bar has a machined helical surface that may be abrasive to skin without proper PPE. Proper PPE includes canvas gloves and shirts with sleeves, long work pants, and sturdy work shoes or boots.
Owens Corning® Fiberglas™ Rebar straight bars are available in North America and Europe.
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