Roof Dead Load

Where l r shall not be less than 12 psf and not more than 20 psf.

Roof dead load.

Roof live load reduction. The dead load on a roof is the weight of the roof structure itself along with any permanently attached materials or structures on the roof so it must be designed first of all to support itself. Dead load of attic floor when floored 20 lbs. When figuring total vertical loads for gravity or seismic loads does anyone adjust the roof dead loads for the slope of the roof.

Overturning should also consider roof uplift forces unless a separate load path is designed to transfer those forces. Pitched roof measured on plan timber trussed rafters. R 1 1 for a t less than or equal to 200 psf r 1 1 2 0 001 a t for between 200 psf and 600 psf. Where d is floor dead load.

Roof dead load calculation msquared48 structural op 11 aug 09 03 57. I just looked at a 12 12 pitched roof and if you compensate for the pitch the flat projected dead load is increased by about 25. Dead load is the vertical load due to the weight of permanent structural and non structural components and attachments of a building such as walls floors ceilings permanent partitions and fixed service equipment etc. The structure of a roof that supports solar photovoltaic panels or modules shall be designed to accommodate the full solar photovoltaic panels or modules and ballast dead load including concentrated loads from support frames in combination with the loads from section 1607 13 5 1 and other applicable loads.

A table of roof material weights including sheathing insulation and other decking. Pole barns roof trusses roof material weight roof material dead load table. Live load on attic floor local requirements. Roof live load may be reduced by the following equation.

Clay tiles interlocking 0 45 kn m. 3 3 dead loads dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. Pitched roof measured on slope clay tiles plain 0 65 kn m. 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.

Concrete tiles interlocking 0 45 kn m. Arch 331 note set 13 1 s2014abn 2. When used for storage only dead load of attic floor not floored 10 lbs. Thick 1 5 psf dead loads.

Concrete tiles plain 0 75 kn m. Popular pages pole framing post connection post embedment post frame foundations rafter installation pole.