STANDARD PRACTICE INSTRUCTION

4.3 Stair width. Fixed stairways shall have a minimum width of 22 inches. ... 8.3 Step ladders. ... and the details shall be such as to prevent or minimize the accumulation of water on wood parts. 9.12.3 When different types of materials are used in the construction of a ladder, the materials used shall be so treated as to have no deleterious ... ................
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