Stair systems.
OBC-compliant industrial stairs designed alongside your mezzanine. Straight runs, switchback, ship's-ladder — bolted to the mezzanine frame, anchored to the slab, signed off by the same P.Eng.
Code-compliant stairs, drawn in with the mezzanine.
Mezzanine stairs are not a generic catalog item — they have to land where your forklift traffic doesn't, drop where your egress code requires, and tie into the mezzanine frame at points that don't fight your beam pockets. 416 draws the stair into the mezzanine package from day one.
Every stair ships on the P.Eng-sealed drawing set with the mezzanine. One submittal, one permit, one install crew. No second mobilization.
OBC Section 3.4 governs rise + run + handrail. We design to it, not to it-plus-five-percent.
- TreadsBar grating, diamond plate, or pan-fill concrete. Slip-rated per OBC.
- Handrails42" guardrail with 4" mid-rail both sides. Continuous run.
- LandingsAt 12 vertical ft max. Same surface + load rating as deck.
- AnchorBolted to mezzanine frame at top, anchored to slab at bottom.
- FinishPowder-coat safety yellow standard. Galvanized on request.
Three stair patterns.
Single-flight standard
Most efficient footprint when wall space allows. Typical 30-45 deg pitch. Lands directly on slab.
U-turn with intermediate landing
Used when ceiling clearance is tight or stair must drop into a constrained floor zone. Intermediate landing at half-rise.
Steep-pitch access
50-70 deg pitch for low-traffic mezzanines (mechanical decks, secondary egress). Always handrail both sides.
Engineered + installed to OBC.
Rise + run compliant
Riser 125-200mm, run 230-355mm, all uniform per flight. Drawing-stamped before fab.
Slip-rated treads
Serrated bar grating or diamond-plate treads. Tested to ASTM E303 slip resistance.
Two means of egress where required
Mezzanines over 9.3 m² with occupant load require two exits. 416 designs that into the stair layout from the start.
Same salaried crew
Stairs install during the mezzanine mobilization. No second crew, no second mobilization fee.
Mezzanine project underway?
Send the stair location + pitch constraint + load expectation. We'll come back with a stamped layout in the mezzanine submittal.