Tags: 204mm, 8", 8in, above grade, attachment, bb-800, bd-800, build, build deck, BuildDeck, ceiling, concrete, concrete floor, concrete roof, Deck, decking, dwg, eight, elevated slab, Floor, floor intersection, footer, Footing, front, green roof, insulated roof, Intersection, long span, mezzanine level, Roof, room, safe, saferoom, section, Shelter, side, slab, span, stirrup, suspended slab, t beam, t-beam, tornado shelter, Transition, wall