An exterior prefabricated metal stair features galvanized construction with shop drawings required prior to prefabrication and all exterior metals specified to be galvanized. All treads are designated as non-slip for exterior use, with six treads set at eleven-inch spacing and riser dimensions adhering to building code limits. The stair structure interfaces with concrete tilt-up panels painted to match the building, bounded by protective bollards at the base. A detail callout focuses on the guardrail and handrail configuration with twelve-inch vertical spacing.
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