A one-and-one-half-inch outside diameter metal handrail is supported by metal posts spaced at five feet on center maximum along the concrete stair. A callout indicates an inset nosing profile at each tread, typically featuring a three-inch dimension with a one-quarter-inch offset. The maximum clearance between the underside of the handrail and the tread is four inches, with a four-inch maximum spacing maintained between intermediate rails. Concrete treads are detailed with specific profile dimensions including an eleven-inch run and an embedded tubular profile less than six inches in diameter.
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