Roof Live Load Vs Live Load

Where snow isn t a problem the live load can come from people working on the roof and any equipment they take on to the.

Roof live load vs live load.

Roof and floor live loads are produced during maintenance by workers equipment and materials and during the life of the structure by movable objects such as planters and people. Arch 331 note set 13 1 s2014abn 2. The north zone middle zone and the south zone are identified on the roof load zone map above. The live load on a roof is the weight of any temporary objects on the roof.

Live loads refer to the dynamic forces from occupancy and intended use. Using the term live loads when referring to roofs might make you scratch your head initially because roofs unlike floors aren t asked to bear the weight of things such as furniture and occupants of a home what you would normally think of as a live load. But when we discuss roofs these days live loads are generally associated with the weight that the roof structure might be asked to endure while the roof is under construction or renovation reroofing. Live loads are temporary loads.

The north zone design live load equates to 40 pounds per square foot. Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched. D dead load l live load l r live roof load w wind load s snow load e earthquake load r rainwater load or ice water load t effect of material temperature h hydraulic loads from soil f hydraulic loads from fluids. Also measured in psf these loads include the anticipated weight of people furniture appliances automobiles moveable equipment and the like.

However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. 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. Minimum design live load can be found in asce 7 table 4 1 or ibc table 1607 1. The dead loads are permanent loads which result from the weight of the structure itself or from other permanent attachments for example drywall roof sheathing and weight of the truss.

Roof loads are a downward vertical force on the home. This downward imposed load on the home is also known as the snow load.