Rooftop mechanical equipment platform framing supported by steel bar joists spaced at eight feet zero inches on center with three-inch full width nailers. The assembly incorporates four-by or six-inch blocking connected with "BA" or "WP" hangers and Simpson "HU" hangers. Leveling platforms utilize four-by-shaped continuous members all around secured with half-inch diameter lag screws at twenty-four inches on center with four inches of embedment into framing members below the roof sheathing. Prefabricated level curb anchorage to the curb is provided by the manufacturer, with sizing determined by equipment weight ranging from nine hundred to twenty-five hundred pounds using four-by-eight, four-by-ten, or six-by-eight members.
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