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Edge Slab Box with Glass
Image by Caliper Studio
Center stringer convenience stair connects two office floors in Starret Lehigh building. Stringer and slab edge assemblies are blackened. Twenty four stainless steel treads are welded to the stringer form a continuous ribbon. 1 1/4" diameter handrail posts are continuous bent "C" shapes that wrap around treds and are welded to stringer. Stair was delivered to site in one piece [24′ long 3′ wide 3′ tall @ 2000lbs. Glass is two 1/2" layers of low iron tempered glass with PVB interlayer. Each panel is a 148.375"x41.25" rectangle that weighs 522lbs. Cut out in concrete floor is trimmed with a box of 1/2" thick blackened steel that was fully prewelded in the shop. The box picks up the load at top of stair and serves as a custom base shoe for the glass.
Design by Diller Scofidio + Renfro
Detailing, Fabrication and Installation by Caliper Studio. Caliper Studio engaged Eckersley O’Callaghan & partners for engineering services.