In a typical prefabricated steel stair, the number of stringers required is determined by the

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The number of stringers required in a prefabricated steel stair is determined by multiple factors: the floor-to-floor height influences the overall design and structural requirements; the spanning capacity of the tread-riser units affects how much support is needed to safely distribute the load; the width of the stair dictates the spacing and number of stringers for adequate support; and the spanning capacity of the stringers themselves determines how many are needed to support the intended load without excessive deflection or failure.

In a Typical Prefabricated Steel Stair, the Number of Stringers