High-Strength Material Specifications for Type B Metal Decks Accepted by Florida Structural Engineers and Coastal Contractors
We offer specification consulting, material supply, and installation support for Type B metal deck specifications in Florida coastal projects and marine-exposed structures. Miami Metal Deck provides compliance reviews, duplex coating options, and stainless solutions for Type B metal deck specifications Florida.
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Summary
- G90 galvanizing standard in coastal projects
- Use duplex coatings for extended corrosion resistance
- 316 stainless in splash zones and tidal areas
When planning Type B metal deck work in Florida, structural engineers and coastal contractors prioritize proven, code-compliant high-strength materials and coatings that resist marine corrosion and high winds. Accepted specifications typically reference ASTM standards, Florida Building Code provisions, and ASCE 7 loading criteria; engineers evaluate galvanizing class, coating systems, and base steel grade together with span tables, diaphragm capacity, and connection details to ensure long-term performance under coastal exposures.
Accepted Galvanizing and Coating Systems
For most Florida coastal projects, hot-dip galvanizing meeting ASTM A653/A123 requirements is the baseline. G90 is widely preferred over G60 in marine-adjacent environments due to higher zinc mass and improved sacrificial protection. Many engineers specify a duplex system hot-dip galvanize plus an approved epoxy or polyurethane topcoat to extend life in salt air and to meet aesthetic and warranty needs.
Aluminum-zinc coatings (Galvalume, ASTM A792) can be acceptable where thermal performance and corrosion behavior meet project requirements, but coastal engineers often require project-specific testing and justification. Specify coating appearance, adhesion, and inspection criteria in submittals to speed acceptance by coastal contractors.
High-Strength Base Metals and Standards
Base steel grades commonly called out for Type B decks include cold-rolled and structural grades that comply with ASTM A1008 or A653 for coated sheet and A572 for higher-strength plate where permitted by deck manufacture. Engineers evaluate yield strength, tensile strength, and formability to match deck profile geometry and span tables.
Specify gauge and section properties according to the deck manufacturers published span tables and the Florida Building Code. Where higher strength or thinner sections are required for weight savings, require certified mill reports, traceability, and shop testing to document compliance with material standards.
Design & Construction Considerations for Coastal Projects
Beyond material selection, Florida structural engineers focus on connections, fastener corrosion resistance, isolation from dissimilar metals, and details that prevent trapped moisture. Use stainless or sealed fasteners, neoprene washers, and isolation coatings where steel meets aluminum or concrete to prevent galvanic corrosion.
Specify acceptance testing and QA: mill test reports (MTRs), coating mass verification, adhesion tests, and on-site inspections. Compliance with the Florida Building Code, ASCE 7 wind criteria, and relevant ASTM standards streamlines review and approval by permitting authorities and contractors experienced with coastal conditions.
How Miami Metal Deck Supports Your Project
Miami Metal Deck recommends tailored specifications that balance durability and budget: we review project exposure, recommend G90 or duplex systems, specify 316 stainless where required, and document material compliance to Florida codes. We provide shop submittals, QA documentation, and fabrication guidance so engineers and coastal contractors can approve Type B metal deck specifications quickly and confidently. Our differentiators include seasoned coastal experience, supplier traceability, and coordinated documentation to reduce RFIs and schedule delays.