Industrial access platform at a fuel terminal — structural engineering project
Project — Structural Engineering & PE Sealing

Fuel Terminal
Platform Engineering

Aluminum access platform structural engineering for a Gulf Coast fuel terminal — 186 mph wind design, Risk Category IV, and PE-sealed drawings for permitting.

Location
Gulf Coast, USA
Wind Design
Vult = 186 mph
Risk Category
IV
PE Sealed
Yes
Project Overview

Engineered to survive hurricane-force winds

Grey Engineering Enterprises provided structural engineering and PE sealing for aluminum access platforms at a Gulf Coast fuel terminal. The project included a tank access platform and a truck loading platform — both designed to the 2024/2026 Florida Building Code with Risk Category IV wind loading.

Risk Category IV applies to facilities that are critical to public safety and must remain operational during and after a major storm event. This classification drives the design wind speed to Vult = 186 mph — well above the standard residential or commercial threshold — and requires a 100 PSF uniform live load on all platform surfaces.

The aluminum-on-steel construction required a dissimilar metal isolation check to prevent galvanic corrosion at the platform attachment points. Anchor bolt and tie-down design was reviewed to ensure the platforms remain secured under the full hurricane wind load envelope.

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Platform Specifications
Platform Type
Aluminum Access Platform
Live Load
100 PSF Uniform
Wind Speed
Vult = 186 mph
Risk Category
IV (Critical Facility)
Exposure Category
C (Open Terrain)
Building Code
2024/2026 Florida Building Code
Truck Platform Size
8.5 ft × 8.5 ft × 7.58 ft high
Grating
48" wide safety-serrated aluminum
PE Sealed
Yes — Licensed PE
Dissimilar Metal Check
Aluminum on Carbon Steel Tanks
Scope of Work

Full structural package, PE-sealed for permitting

01

Aluminum Platform Structural Review

Structural engineering review of aluminum access platforms on carbon steel tanks — including tank access platform and truck loading platform. Member sizing, connection design, and grating loads verified against the 2024/2026 Florida Building Code.

02

High-Wind Load Analysis

Wind load analysis per ASCE 7 with Vult = 186 mph, Risk Category IV, Exposure Category C. Platform components designed to resist the full factored wind load envelope — critical for coastal Gulf Coast installations subject to hurricane-force winds.

03

Live Load & Code Compliance

Platform designed for 100 PSF uniform live load — the Risk Category IV requirement for critical facilities. Compliance verified against 2024/2026 Florida Building Code and AISC structural standards for aluminum construction.

04

Dissimilar Metal Isolation

Dissimilar metal isolation check for aluminum platform clips bearing on carbon steel tank shells — galvanic corrosion risk evaluated and isolation requirements specified to prevent accelerated corrosion at the aluminum-to-steel interface.

05

Anchor Bolt & Tie-Down Design

Anchor bolt and tie-down design review for platform attachment to tank structure — uplift and shear loads calculated under the full wind load case, with anchor bolt patterns specified to resist the governing load combination.

06

PE Sealing & Permitting

All structural calculations, drawings, and code compliance documentation reviewed and sealed by a licensed Professional Engineer. Package issued for building permit submission and owner record.

Design Methodology

Risk Category IV wind design

Risk Category IV structures are those whose failure would pose a direct threat to public health and safety, or that are essential to emergency response operations. For a fuel terminal in a coastal Gulf Coast location, this classification is mandatory — and it drives every structural design decision.

The 186 mph ultimate design wind speed (Vult) is derived from ASCE 7 wind maps for the project location and risk category. Wind loads are calculated for the platform structure, grating, handrails, and equipment — then combined with gravity loads in the governing LRFD load combinations to size every member and connection.

The 48-inch wide safety-serrated aluminum grating steps were specified for their high strength-to-weight ratio and corrosion resistance in the marine Gulf Coast environment — while the serrated surface provides slip resistance for personnel working in wet conditions.

Design Parameters — Risk Category IV
Ultimate Wind Speed
Vult per ASCE 7
186 mph
Risk Category
Critical / Essential Facility
IV
Exposure Category
Open terrain — coastal
C
Uniform Live Load
All platform surfaces
100 PSF
Building Code
Florida Building Code
2024/2026 FBC
Grating Width
Safety-serrated aluminum
48 inches