FRP Structural Platform

FRP STRUCTURAL PLATFORM · MOLDED GRATING

An FRP access platform that supports the load, survives the acid, and is up before the next turnaround

Composite structural platform with molded-grating walking surface and pultruded FRP I-beam stringers. Sized to OSHA walking-platform loads and process-vessel access geometry. Drop-in to existing anchor pattern on retrofit projects.

Load: {{5–25}} kN/m²
Span: Up to {{3}} m
Grating: Molded mesh / pultruded bar
OSHA: 1910 Subpart D compliant

SIZE & LOAD SELECTION - START HERE

Grating family decides the anti-slip and drainage behavior; beam series decides the span. Pick the cell from the matrix that matches your plant standard.

Grating family	Mesh / spacing	Surface	Beam series	Span	Live load	Use case
Molded MG-25	25 × 100 / 38 × 100 mm	Grit anti-slip	I100 × 50	1.0 m	{{5}} kN/m²	Light inspection platform
Molded MG-38	38 × 100 mm	Grit anti-slip	I150 × 75	1.5 m	{{5}} kN/m²	Standard plant walkway
Molded MG-50	50 × 100 mm	Grit anti-slip	I200 × 100	2.0 m	{{5}} kN/m²	Process-vessel access
Pultruded PB-40	40 mm I-bar	Quartz grit	I250 × 125	2.5 m	{{7.5}} kN/m²	Heavy maintenance access
Pultruded PB-60	60 mm I-bar	Quartz grit	I300 × 150	3.0 m	{{10}} kN/m²	Tool-cart traffic
Covered CG	Solid top, drainage channels	Grit anti-slip	per calc.	per calc.	per calc.	Above chemical trench / spill zone

WHY THIS PAGE EXISTS

What the buyer is trying to solve

Plant maintenance engineers specifying the next access platform.

The buyers who land on this page are plant maintenance engineers and EPC contractors who are specifying a replacement or new-build access platform for a chemical, acid, alkali, or salt-spray environment. The existing painted-steel platform has rusted; the existing galvanized grating has corroded at the weld points; the existing concrete plinth has cracked. They want a platform that can be installed within the next turnaround window, that does not need to be repainted, and that holds its structural load rating for the next 20+ years.

Drop-in geometry

Standard beam and grating dimensions; OEM drops into existing anchor pockets on retrofit projects.

One quarter the weight

~ ¼ the mass of equivalent steel platform; reduces the structural load on the support columns.

Acid / alkali proof

Vinyl-ester grating and beams rated for the same chemical atmospheres as the FRP handrail on this site.

OSHA geometry

Standard OSHA walking-platform loads; integral kick plate; railing mounts compatible with FRP handrail on the platform edge.

Specifications

Grating family	Molded (MG) and pultruded bar (PB); covered grating (CG) for spill zone
Mesh spacing	{{25 × 100, 38 × 100, 50 × 100}} mm (molded); {{40 / 60}} mm I-bar (pultruded)
Grating thickness	{{25, 30, 38, 50}} mm (verify on part drawing)
Beam family	Pultruded I-section, {{100 × 50, 150 × 75, 200 × 100, 250 × 125, 300 × 150}} mm
Span	{{1.0–3.0}} m (verify on load case)
Live load	{{5–10}} kN/m² (verify on use case); higher loads on request
Deflection limit	L/200 standard; L/360 for vibration-sensitive service
Surface	Quartz-grit anti-slip integral; smooth underside for covered grating
Resin	Vinyl-ester (FR); isophthalic (economy); phenolic (HL3-rated) on request
UV package	UV-9 inhibitor integral + UV-stable topcoat on visible surfaces
Fire performance	ASTM E84 Class A on request; ASTM D635 self-extinguishing
Kick plate	4″ (100 mm) integral or clip-on
Anchor	Stainless A4 or composite bracket to existing column or new footing
Volume resistivity	> 10⁸ Ω·cm (non-conductive)
Operating temperature	{{−50}} °C to {{+90}} °C continuous (resin dependent)
Design life	{{25}} years in chemical atmosphere

When not to specify FRP platform

Cases where steel grating remains correct.

Three cases where we redirect

Very heavy rolling loads above {{10}} kN/m². If the platform is on a steel-mill route or a heavy-equipment service path, the FRP grating can deflect; specify a heavier pultruded grating or a steel grating.
Open flame or welding operation directly above. Hot metal splash degrades the resin; specify a localized steel grating plate in the hot zone and FRP elsewhere.
Very small platform (below 1 m²) where standard grating pieces are inefficient. Custom-cut FRP grating has more waste than custom-cut steel; for one-off small platforms the steel plate is the right call.

Material comparison

Property	Painted steel grating	Galvanized steel grating	Aluminum grating	Enbuss FRP platform
Mass per m² (38 mm grating)	~ {{25}} kg/m²	~ {{25}} kg/m²	~ {{10}} kg/m²	~ {{12}} kg/m²
Coating cycle	{{12–18}} months	{{24–36}} months	Pitting at welds	None
Span at {{5}} kN/m² (typical I-beam)	~ {{2.5}} m	~ {{2.5}} m	~ {{1.8}} m (deflection-limited)	~ {{2.0}} m
Electrical isolation	Conductive	Conductive	Conductive	Non-conductive
Site fabrication	Weld + paint	Weld + paint	Weld	Bolt + cut
25-yr cost (chemical atmosphere)	3 replacements	1–2 replacements	Some replacement	No replacement

Customization & OEM

EPC and platform fabricators typically need a complete kit: grating panels cut to size, beams cut to length, kick plates, anchor brackets, railing mount stubs. Send the platform layout and we return the BOM. First article {{6}} weeks; repeat {{3}} weeks.

Frequently asked questions

What is the typical lead time for a 500 m² platform order?

From PO to first delivery, typically {{8–10}} weeks for standard MG-38 grating and I150 beams. Custom mesh or covered grating adds {{2–3}} weeks. We hold forecast slots for major plant EPCs.

Is the platform OSHA-compliant?

Standard platform geometry satisfies OSHA 1910 Subpart D walking-platform loads. Project-specific loads and jurisdictions verified on first article.

Can the platform be installed during a turnaround?

Yes. Typical installation rate is {{30–50}} m² per shift for a 4-person crew. We supply the installation drawing with each shipment.

How is the grating cut on site?

Diamond or PCD blade, dust extraction, edge sealer kit supplied. Cut edges must be sealed with the kit provided or the warranty is void.

Does the grating hold a chemical splash?

Yes for the same chemical families as the FRP handrail. Verify specific chemicals on first article; some solvents are out of scope for vinyl-ester.

How is the platform inspected in service?

Visual at annual walk-around; look for surface damage, UV chalking, or impact cracks. Any visible crack or fiber exposure is grounds for replacement. Inspection interval typically annual.

Can the platform be supplied with a removable section for crane access?

Yes. Specify on RFQ; we supply a removable grating section with lifting handles.

What documentation comes with each shipment?

Per shipment: dimensional inspection, resin lot certificate, ASTM E84 (if specified), OSHA geometry reference, installation drawing, anchor BOM.

Send a platform layout

Send the platform dimensions, the live load requirement, the atmosphere class, and the anchor pattern. We return a kit BOM, a fixed quote, and the certification pack.

Email a platform engineer