Roof Live Load Reductino

When should i shovel snow off my roof.

Roof live load reductino.

Hence the magnitude of the roof live loads should be specified as for a flat roof and the program allowed to make the reduction based on the slope of the framing. Snow load is different than roof live load. Commentary in asce 7 05 c4 about roof live load reductions explains the anticipated difference in use of roof areas vs. 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.

1603 1 3 roof snow load data. Where uniform roof live loads are reduced to less than 20 psf 0 96 kn m 2 in accordance with section 1607 12 2 1 and are applied to the design of structural members arranged so as to create continuity the reduced roof live load shall be applied to adjacent spans or to alternate spans whichever produces the most unfavorable load effect. Find the answers to these questions with our snow load calculator. The live load on a roof is the weight of any temporary objects on the roof.

What is the weight of the snow covering my house. L r l o r 1 r 2. Use of live load reduction in accordance with section 1607 11 shall be indicated for each type of live load used in the design. R1 is for tributary area above 200 sq.

Likewise roof live loads in the hong kong building regulation can be reduced as a function of the slope. The nature of roof live load is different from that of floor live load so the approach to reducing roof live load is different from that used for floor the requirement is presented in asce 7 05 4 9. Roof live load reduction. 1603 1 2 roof live load the roof live load used in the design shall be indicated for roof areas section 1607 13.

Where snow isn t a problem the live load can come from people working on the roof and any equipment they. R 1 0 6. R2 is a reduction factor for roof slope above 4 12. The equation in the ibc is lr lor1r2.