Rooftop steel with no roof penetrations: how ballasted systems work
Why specs say "no fasteners through the roof assembly", and how the ballast is actually engineered.
Typical mezzanine floor loadings: how to pick a PSF rating
60 to 250 psf by use, what a rating actually covers, and the dead and point loads people forget.
HVAC and equipment platforms: rooftop and mechanical access steel
Operating weight, roof load paths and dunnage, service clearances, vibration, and picking the access.
Food-grade mezzanines: designing for wash-down and sanitation
Stainless vs coated steel, sloped drainable surfaces, and sealed connections that stay clean.
Conveyor support structures and crossovers
Load, deflection, guarding, and installing steel over a live line without stopping it.
Industrial catwalk design standards: width, load, guards
Walkway width, live load, 42-inch guards, and toe boards — the references that belong on the drawing.
Shutdown-coordinated install: how to land on the window without drift
Pre-install verification, rigging plan, and the three things that move install timelines.