Engineering Design Resources

Specifying pultruded FRP is not the same as specifying steel or aluminum. The material is highly anisotropic — longitudinal modulus can be 4-6× higher than transverse — meaning the connection detail, not the cross-section, often determines whether your structure performs. The guides below are written by F1 Composite's engineering team and reviewed against real failures from our 20-year service history. Each guide assumes the reader is a structural engineer or fabricator who has worked with steel or aluminum and is approaching FRP for the first or second time.

Connection Design covers bolted, bonded, and hybrid joints with minimum edge distances (3d for through-bolt, 4d for blind fastener), bearing strength factors per fiber direction, and the long-running question of whether to bond + bolt (yes, for fatigue-loaded joints; not necessary for mostly-static joints). Load Tables publish allowable load (deflection-limited L/180, L/240, L/360) and ultimate capacity for every standard wide-flange beam, channel, angle, square tube, round tube, and flat bar. Corrosion-Zone Specification Language provides drop-in CFC and CRP clauses tested against Aramco SAES-W-018, SABIC, ADNOC, and US EPA chemical-plant specs.

FRP-to-Steel Galvanic Isolation covers isolation washer types, sleeve specifications, and acceptance criteria — most "FRP corrosion" complaints we trace to a galvanic path through an unprotected steel fastener, not the FRP itself. Fenestration Engineering for AS 2047 (Australia) and PHI (Passive House) is the working document behind our Yancheng talent apartment and Antarctic Qinling Station deployments — frame composition, transverse reinforcement strategy, thermal break detail, glazing rebate, and air/water/wind test procedures.

Solar Mounting Profile Design covers wind uplift load paths, expansion joint spacing for >12 m racks, UV-stable resin selection, and AS/NZS 1170 wind compliance. Bridge Deck Connection covers panel-to-panel bonded splice plates, mechanical lap splices, and the moisture-management detail at deck-to-girder interfaces — drawn from European refurbishment project experience.

Design Guides reference the following codes (we cite specific clauses where applicable):

• ASCE Pre-Standard for Load and Resistance Factor Design of Pultruded Fiber Reinforced Polymer Structures (2010)
• EN 13706 Reinforced plastics composites — Specifications for pultruded profiles (Parts 1-3)
• ASTM D2344, D790, D695, D2583, D5379 for material property test methods
• AS 2047 Windows and external glazed doors in buildings (Australia)
• PHI Passive House Component certification Class A+/A
• ASTM E84 Surface burning characteristics