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Fixed Stairways

Fixed stairways refer to indoor and outdoor industrial stairs leading to or from floors or platforms and around machinery, tanks, and other equipment.

Strength

Stairways must be constructed to carry five times the intended maximum load. For example, if the stairway is intended to hold a 250-pound man carrying a 50-pound load, the stairway should be constructed to hold 1,500 pounds to meet the regulation. The minimum required strength for a stairway is 1,000 pounds.

Surface

The stairway surface should be constructed of a slip-resistant material. This may include the entire tread or just the leading edges. Non-slip surfaces include rubber, metal, or slip-resistant paint.

Platforms

Stairways must have a safe platform for performing operations and maintenance. The platform must be at least 30 inches deep and 22 inches wide. Any unprotected sides or edges of a stairway landing must have a standard 42-inch guardrail system.

Stairway Width

All stairways must be at least 22 inches wide.

Vertical Clearance

Stairways must be constructed to include at least 7 feet of vertical clearance above any stair tread.

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