Nc Roof Live Loads

The live load on a roof is the weight of any temporary objects on the roof.

Nc roof live loads.

Wilmington street suite 450 raleigh nc 27601 1058. Type of live load used in the design. Cold weather loads snow typically applied to exposed roofs or decks ground snow load commonly 10 psf usually roof live load governs unless snow drifts are considered frost heave condition where soil under footing freezes and exerts upward movement on the foundation bottom of footings must be below frost depth to avoid this. 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.

The ground snow load p g shall be indicated. Roof loads are a downward vertical force on the home. The north zone middle zone and the south zone are identified on the roof load zone map above. 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.

North carolina state building code. Where snow isn t a problem the live load can come from people working on the roof and any equipment they. Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched. The roof live load used in the design shall be indicated for roof areas section 1607 11.

However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. 4 whenever the roof slope does not exceed 20 degrees the design horizontal wind loads required by 3280 305 c 1 may be determined without including the vertical roof projection of the manufactured home. Low slope membrane roof 2016 page 2 roofing design guidelines and policies for low slope roofs state of north carolina department of administration state construction office. In areas where the ground snow load p g exceeds 10 pounds per square foot psf 0 479 kn m2 the.

1607 12 1 distribution of roof loads. However regardless of the roof slope of the manufactured home the vertical roof projection shall be included when determining the wind. 1603 1 3 roof snow load. This downward imposed load on the home is also known as the snow load.

Loads used in design load equations are given letters by type.