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4.3 Structural Loads

National Building Museum, Washington, D.C.
National Building Museum,
Washington, DC

Design loads shall be in accordance with International Building Code (IBC) except as noted:

GSA promotes flexibility in the use of space. Since corridor locations may not be known until after construction begins and are subject to change over time, use an “office” uniform live load of 3.8 kPa (80 pounds per square foot) in lieu of the tabulated uniform live load in the IBC. Spaces with higher live loads than this should be designed for the code required minimum or the actual live load, whichever is greater. Do not use live load reductions for (1) horizontal framing members, (2) transfer girders supporting columns, and (3) columns or walls supporting the top floor or roof.

Special live load requirements are specified for telecommunications equipment rooms by the EIA/TIA Standard 569: Commercial Building Standard For Telecommunications Pathways And Spaces (and related bulletins).

Telecommunication Closets: Use 3.8 kPa (80 pounds per square foot) minimum distributed live load capacity, which exceeds the minimum live load capacity stated in EIA/TIA Standard 569, standard part 7.2.3 of 2.4 kPa (50 pounds per square foot).Verify if any equipment will be used that exceeds this floor load requirement.

Equipment Rooms for Telecommunication Equipment: Floor loading capacity of telecommunication equipment rooms shall be sufficient to bear both the distributed and concentrated load of installed equipment. The EIA/TIA Standard 569 prescribes a minimum live load capacity for distributed loads of 12.0 kPA (250 pounds per square foot) and a minimum concentrated live load of 4.5 kN (1,000 pounds) over the area of greatest stress to be specified.


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