Fire Rebuild & Reconstruction in La Verne

La Verne fire rebuild with stairs and guards drawn for plan check: riser and tread sizes, handrails, guard heights and openings shown on a detail sheet.

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On a rebuilt La Verne house, the plan reviewer measures the stairs on paper before anyone builds them. The set needs a section through each stair showing riser height, tread depth, headroom and the handrail, and a detail for every guard at a raised floor, deck or balcony. A stair that cannot meet those dimensions in the space it was given forces a change to the floor plan, so we draw it early.

Risers, treads and headroom

Code caps riser height at 7.75 inches and sets a minimum tread depth of 10 inches, and the risers in a flight have to match one another closely. Headroom is measured straight up from the line of the nosings. A handrail runs the full flight on at least one side, at a set height and with a grip size the code defines. Winders and spiral stairs carry rules of their own. A run that needs more length than the plan allows means moving a wall or reshaping the landing.

Guards and openings

Any floor, deck or landing more than 30 inches above the surface below needs a guard at least 36 inches tall on most edges. Openings in it must stop a 4 inch sphere from passing, which sets the spacing of balusters or cable. The reviewer also checks that each guard can resist the load the code assigns to its top rail, so post anchors are detailed. If the parcel sits on a fire hazard map, outdoor deck boards and stair treads must also be ignition-resistant.

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