Loads For Attic
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Girder load width half joist span live load on roof local requirements for wind and snow.
Loads for attic. Strengthening attic joists for live loads by sistering. Live load on attic floor local requirements. Virtually any attic floor can be brought up to code it s just a matter of how much. Sistering is the process of adding a new joist next to each existing joist.
2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes. In the case of 2x6 joists you can pair them up with additional 2x6 joists by nailing them together. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. Loads should be determined in accordance with this chapter.
An inaccessible attic space on the other hand might have a live load of only 20 psf. If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists. A room used solely for sleeping might need to carry only 30 psf whereas a garage floor over a basement would need 50 psf or higher. If your existing attic flooring isn t adequate for conversion to a living space all is not lost.