Cooling Towers
Why Cooling Towers Needs FRP
Cooling towers are perpetually wet, chemically treated and thermally cycled — a worst-case environment for steel and timber. FRP grating and structural profiles carry fill, support walkways and resist the treatment chemicals that corrode metal.- Wet/dry cycling accelerates metal corrosion
- Water treatment chemicals attack structures
- Constant moisture promotes rot in timber
- Access above hot, humid water basins
ZeAllgrate Solutions for Cooling Towers
ZeAllgrate molded grating and structural profiles are specified for cooling tower internals — chemical-resistant, thermally stable and maintenance-free for decades.
Typical Applications
Fill support grids
Fan deck walkways
Distribution basin covers
Drift eliminator supports
Access ladders & stairs
Maintenance platforms
Project Gallery
Real ZeAllgrate FRP grating products and installations in service across this industry.
FRP fill-support grating grid in a cooling tower basin
FRP structural bars for drift eliminator support
Anti-slip FRP fan-deck walkway above a hot water basin
Solutions for Every Process Area
Engineered FRP solutions mapped to each stage of your facility — from corrosive process zones to high-traffic access routes.
Platforms over fill media and distribution basins.
Access walkways around fans with fire-retardant options.
Covers and walkways over water basins resisting treatment chemicals.
Non-conductive ladders and handrails throughout the tower.
Technical Specifications & Compliance
Application-specific engineering reference for Cooling Towers — corrosion rating, load criteria, governing codes and the recommended ZeAllgrate configuration. Use this as the specification starting point; final design must be verified against certified load/span charts and the project's governing codes.
| Parameter | Specification for Cooling Towers |
|---|---|
| Corrosion Level | High Perpetual wetness, water-treatment biocides/corrosion inhibitors and thermal cycling (hot/cold basin). |
| Typical Load Requirements | Fill-support & distribution decks 50 psf (2.4 kN/m²) pedestrian plus fill-media dead load; fan-deck access 75 psf (3.6 kN/m²); vibration at fan drives considered. |
| Applicable Standards & Regulations | CTI (Cooling Technology Institute) accepted practice, OSHA 1910.23 & 1910.29, ISO 14122, ASME (where pressure-vessel-adjacent), local boiler & pressure-vessel code. |
| Recommended Resin System | ZeAll ISO for general fill & walkway service; ZeAll VE where makeup-water chemistry is aggressive (high chloride, acidic pH); ZeAll FR for fan-deck fire zones. |
| Recommended Grating Type | Molded 38.1/50.8 mm fill-support grids & basin covers; Pultruded I5020 fan-deck walkways; structural profiles for drift-eliminator support; all components non-conductive. |
Resin systems: ZeAll VE (vinyl ester — severe corrosion), ZeAll ISO (isophthalic polyester — general service), ZeAll FDA (food/potable grade), ZeAll FR (extra flame-retardant), Phenolic (fire/smoke-critical). Grating types: Molded (bi-directional), Pultruded (long-span), Mini-Mesh (fine openings), HLC (high-load capacity).
Cooling Tower Service Conditions
| Condition | ZeAllgrate Response |
|---|---|
| Chlorine / bromine treatment | Vinyl ester for the water side |
| UV & temperature cycling | UV-stabilised grades for exposed zones |
| Permanent moisture | No corrosion, no paint programme |
| Fill & drift service | Lightweight panels; easy access and inspection |
Specification Guidance
Specify vinyl ester where panels sit in the treated water, UV-stabilised resin for the sun-exposed decks, and grit-top on traffic surfaces — tower decks stay wet and slippery. Fans and circulating pumps impose vibration on decks, so match the span to the load table with the deflection limit applied and check the natural frequency where machinery sits on long spans. SS316 clips and pultruded framing complete the package; the lightweight panels install without cranes between fills.
Specify vinyl ester where panels sit in the treated water, UV-stabilised resin for the sun-exposed decks, and grit-top on traffic surfaces — tower decks stay wet and slippery. Fans and circulating pumps impose vibration on decks, so match the span to the load table with the deflection limit applied and check the natural frequency where machinery sits on long spans. SS316 clips and pultruded framing complete the package; the lightweight panels install without cranes between fills.Go Deeper with the ZeAllgrate Knowledge Base
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