Juneau Live Load Roof

Juneau ak 99801 telephone.

Juneau live load roof.

If you live in the us our snow load calculator compares the total weight on your roof with the permissible load calculated according to the standards issued by the american society of civil engineers regarding the minimum design loads for buildings and other structures asce7 16. The 1 4 in 12 design slope is reduced more from live load and long term dead load creep to exacerbate water retention. Monday friday 8 00am 4 30pm. Victor staley a building official in the town of brewster mass responds.

To request a copy send a check for 22 50 includes postage payable to department of civil engineering university of idaho p o. Box 441022 moscow id 83844 1022. Our ground snow load values can be as high as 300 psf and the snow sticks around for more than 6 months at a time. A publication can be purchased called ground and roof snow loads for idaho by r.

For example in a garage cars trucks boats and rvs constitute live loads. Roof live load of 20 psf or less see ibc 1607 and chapter 3 of this publication r rain load see ibc 1611 and chapter 3 of this publication s snow load see ibc 1608 chapter 7 of asce sei 7 and chapter 4 of this publication t cumulative effects of self straining forces and effects see asce sei 2 3 4 and 2 4 4 w load due to wind pressure see ibc. Design ground snow loads for alaska are defined in asce 7 for multiple communities around the state. It has been known to snow in alaska.

Ground snow load might seem somewhat confusing until you read the basic premise that is identified in irc section r301 6 which states. The weight of a worker walking across a steel building roof is a live load. On a roof with a slope greater than 4 to 12 the live load limit is typically adjusted downward from 20 psf to 15 psf to allow for the relatively greater dead load on the steeper roof. This is one if the unique challenges of structural engineering in alaska.

Therefore a roof designed and installed to a 1 4 in 12 slope deflects downward and needs to be analyzed as a susceptible bay according to asce 7 10. The roof shall be designed for the live load indicated in table r301 6 or the snow load indicated.