7/16″ x 20′ Fiberglass Rebar – High-Performance Concrete Reinforcement

Learn more about our complete range of FRP rebar and composite reinforcement products.

Product Specifications

Our 7/16″ x 20′ fiberglass rebar is manufactured from high-strength E-glass fibers embedded in a corrosion-resistant vinyl ester resin matrix. It is used as a reinforcement option for concrete flatwork and other applications where reduced corrosion compared with unprotected steel is desired. IncomePultrusion produces these bars on controlled pultrusion machines with matched steel pultrusion dies to maintain consistent fiber content and cross-sectional dimensions.

Core Specifications:

• Diameter: 7/16 inch (11.1 mm)
• Length: 20 feet (6.1 meters)
• Material: E-glass fibers in vinyl ester resin
• Bundle Size: 50 pieces per bundle
• Weight: Approximately one-fourth the weight of steel rebar for equal diameter
• Tensile Strength: 100,000+ psi (typical product value)

Key Advantages Over Steel Rebar

For a detailed comparison between fiberglass and traditional materials, read our fiberglass rebar vs steel mesh analysis.

Corrosion Resistance

Fiberglass rebar does not rust like steel, so it is often selected for:

• Driveways and sidewalks exposed to de-icing salts
• Pool decks and marine environments
• High-humidity or chemical exposure areas
• Concrete flatwork where extended service life is desired

Lightweight Handling

• Approximately 75% lighter than equivalent steel rebar by weight for equal diameter, which can reduce handling effort and shipping costs
• High tensile strength in the fiber direction for tension-loaded concrete reinforcement
• Easier installation because bars are lighter and easier to carry on site

Non-Conductive Properties

Suitable for specialized applications requiring electrical insulation:

• MRI rooms and medical facilities
• Areas near sensitive electronic equipment
• Electromagnetic interference-sensitive environments

Performance Comparison

Recommended Applications

Ideal For:

• Flatwork: Driveways, sidewalks, patios, and garage floors
• Pool Decks: Chloride-resistant reinforcement
• Basement Slabs: Moisture-resistant foundation work
• Precast Elements: Lightweight concrete components
• Medical Facilities: Non-magnetic reinforcement for MRI areas

For structural FRP shapes used in framing and supports, see our pultruded FRP profiles.

Not Recommended For:

• Vertical load-bearing structures (columns, walls)
• High-shear applications
• Projects requiring field bending (pre-formed shapes needed)

Installation Guidelines

Cutting and Handling

• Tools Required: High-speed grinder with diamond or masonry blade
• Safety Gear: Safety glasses, dust mask, and gloves mandatory
• Technique: Use steady pressure for clean, straight cuts
• Storage: Keep bundles dry and properly supported

Placement Best Practices

• Spacing: Follow engineer specifications for your specific application
• Tie Wire: Use plastic-coated or stainless steel tie wire to prevent corrosion
• Concrete Cover: Maintain minimum 2-inch cover for optimal performance
• Lap Joints: Overlap minimum 40 diameters for continuous reinforcement

Technical Compliance

Our fiberglass rebar is manufactured to meet commonly referenced industry standards:

• ASTM D7957 – Standard Specification for Glass Fiber Reinforced Polymer Bars
• ACI 440.1R – Design Guide for FRP Bar Reinforced Concrete
• Suitable for residential and light commercial flatwork when approved by the project engineer

To learn more about fiberglass rebar standards, applications, and design considerations, explore our complete guide to FRP rebar.

Quality Assurance

• Manufacturing Standards: Documented production and quality control procedures
• Batch Testing: Production runs tested for strength and quality
• Technical Support: Available for installation questions and design assistance

Cost Benefits

Fiberglass rebar may reduce lifecycle costs in corrosive environments through:

• Reduced maintenance – no rust protection treatments needed
• Longer service life – can outlast unprotected steel in chloride exposure
• Reduced labor costs – lighter bars can be faster to place
• Lower transportation costs – significantly lighter weight

FAQ

What are the dimensions of 7/16 x 20 fiberglass rebar?

7/16 inch (11.1 mm) diameter x 20 feet (6.1 m) length fiberglass rebar. Equivalent to a #4 steel rebar size with nominal cross-sectional area of 0.20 in² (129 mm²).

What is the weight advantage over steel rebar?

7/16 x 20 fiberglass rebar weighs 0.16 lbs/ft (0.24 kg/m), approximately 75% lighter than equivalent #4 steel rebar by weight for equal diameter at 0.67 lbs/ft (1.0 kg/m). The reduced weight can lower transportation and handling costs.

What is the tensile strength of 7/16 fiberglass rebar?

7/16 fiberglass rebar provides 100,000+ psi (689 MPa) tensile strength in the fiber direction. Actual performance depends on resin system, fiber fraction, and installation conditions.

Is 7/16 x 20 fiberglass rebar corrosion resistant?

Yes. The glass-fiber/vinyl ester composite resists chlorides, moisture, many chemicals, and de-icing salts better than unprotected steel, so it is often used in pool decks, marine structures, driveways, and wastewater facilities.

What applications use 7/16 x 20 fiberglass rebar?

Common applications include residential driveways, pool decks, patios, garage slabs, basement floors, precast elements, marine concrete, and non-magnetic applications such as MRI facilities.

Does 7/16 fiberglass rebar conduct electricity?

No. It is non-conductive and non-magnetic, making it suitable for electrical substations, airports, hospitals (MRI rooms), and applications requiring electromagnetic compatibility.

Can 7/16 x 20 fiberglass rebar be cut and tied like steel?

Yes. It can be cut with standard rebar cutters or saws and tied with concrete tie wire and plastic bar chairs. Follow manufacturer and project specifications for placement.

What building codes accept 7/16 fiberglass rebar?

FRP rebar is referenced in ACI 440.1R and ASTM D7957. Approval for a specific project depends on local building codes and the engineer of record.

Ordering Information

• Standard Bundle: 50 pieces per bundle (full bundles only)
• Availability: Made to order – request lead time and MOQ
• Custom Lengths: Available upon request
• Pre-Formed Shapes: L-bars and U-bars available for special applications

Consult a structural engineer and verify local building codes before use. Professional installation is recommended for optimal results.