![]() ![]() ASCE 7-16 Table 4.3-1 indicates the same loading. Regarding structural design criteria, 2018 IBC Table 1607.1 (30) requires stairs to resist a minimum live load of 300 pounds (concentrated load) or 100 pounds per square foot (psf), or 40 psf for one one-and two-family dwellings. Design of stringers, treads, and their connections are left to the structural engineer. When it comes to the structural design of stair stringers and treads, the code does not provide prescriptive design tables. These sections give requirements on design criteria such as egress width and capacity, allowable riser height, allowable tread depth, headroom, landing size, and stair construction. of the 2018 International Building Code (IBC). Stairway code requirements are partially detailed in Sections 1005.3. There are three main aspects of stair design dictated by code: means of egress component requirements, structural design, and allowable materials/fire resistance ratings. ![]()
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