Attic Live Load

The uniform design live load in unoccupied landscaped areas on roofs shall be 20 psf 0 958 kn m2.

Attic live load.

Joist span bridging girder load width half joist span live load on roof local requirements for wind and snow. Other residential rooms 40 psf. Strengthening attic joists for live loads by sistering if the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of other elements in the load path.

Minimum live loads for garages having trucks or buses shall be as specified in table 1607 6 but shall not be less than 50 psf 2 40 kn m 2 unless other loads are specifically justified and approved by the commissioner. D w provides an adequate and. Increasing the total weight on the floor to 4 480 pounds however results in a live load of 40 psf which is beyond the floor s load capacity. Live load on attic floor local requirements.

An extensive rewrite of footnotes b and g though mostly editorial clarifi es the intent of provisions for determining when an uninhabitable attic must be designed for a minimum live load of 20 psf for limited storage. Offices require 50 psf. Other uses for attics and lofts include a live load plus a 10 psf dead load for the weight of the floor support system floor sheathing sheetrock on the underside and any insulation. 3the transverse wind load for stud design is based on a localized component and cladding wind pressure.

Design live loads will vary based on a number of factors but at a minimum 10 psf live load for attics without storage 20 psf live load with limited storage and 30 psf for habitable attics. The weight of all landscaping materials shall be considered as dead load and shall be computed on the basis of saturation of the soil. 1607 12 4 awnings and canopies. Actual loads shall be used where they are greater than the loads specified in the table.

With an evenly distributed live load of 30 psf which the tables show the floor is able to support the total weight on the floor would be about 3 360 pounds.