How a mezzanine actually carries its load: capacity classes, decking systems, slab requirements, column spacing, and the design decisions that determine what the platform can do.
Engineering
Steel bar grating decks a mezzanine at 7–14 psf dead load while carrying hundreds of psf live — and lets light, air, and sprinkler spray through. The NAAMM specs, real load-table numbers, the ADA catch, and when grating beats a solid deck.
Engineering
A mezzanine rated 125 psf can still fail under one forklift wheel. Why concentrated wheel loads — not the PSF average — govern, which decks take forklift traffic, and how ramps and VRCs get the truck up there safely.
Engineering
Nearly every industrial mezzanine is steel — but 'steel' spans two different framing systems with different spans, loads, and prices. Cold-formed vs structural, the actual steel grades, finishes, fire rules, and sustainability numbers.
Engineering
A VRC moves freight between mezzanine levels under conveyor code, not elevator code — starting around $10,000 and reaching 200,000 lb capacities. VRC vs forklift-and-gate vs spiral conveyor, with the real rules.
Engineering
Mezzanine columns typically land on 8–25 ft grids, with 14×14 ft the largest standard spacing at 125 psf and clear spans to 40 ft possible. How the grid, bracing, and forklift aisles get reconciled.
Engineering
Code requires 7 feet of clear height above and below the deck — which makes 14–16 feet of building clear height the practical minimum for one mezzanine level. The full height math, with sprinklers, lights, and forklifts included.
Engineering
A typical 6-inch warehouse slab carries roughly 25,000 lb per mezzanine column — but soil conditions can cut that by more than half. How slab checks work, what testing costs, and when you need footings.
Engineering
The three structural types of industrial mezzanine — free-standing, rack-supported, and structural — solve different problems. Here's how to pick the right one based on use case, flexibility, cost, and code path.
Engineering
The decking on a mezzanine drives floor cost, fire code path, load capacity, and what you can do on top. Here's how the four common options actually compare — with prices and trade-offs.
Engineering
Mezzanine load capacity is more than a single PSF number. Here's what live, dead, and point loads mean, what code requires, and how to spec capacity correctly without overpaying.