In this area it seems like everyone is falling in love with metal roofs.
Roof snow load maine.
Other considerations for sloped roofs can be found throughout chapter 7 of asce 7 10.
We have a metal roof though it s slope is very shallow nearly flat 1 of vertical drop for every 10 horizontal.
Design ground snow load for acton me 04001.
Make sure to not wait for too long though.
Groundsnowbyzip is a tool for architects engineers and builders to easily determine the ground snow load figure 7 1 table 7 1 for alaska of asce 7 05 for any location in the continental united states to determine the design ground snow load fill in the address below.
This downward imposed load on the home is also known as the snow load.
Ground snow loads of 684 communities listed aphabetically by town name.
A b c d e f g h 1 j k l m n o p q r s t u v w y.
Each county in maine has it s own building code snow load numbers.
The minimum design roof snow load after allowed reductions shall be 30 psf.
In our case let s assume that our structure has a flat roof roof slope 5.
Modern buildings are designed with snow load in mind said dr.
The snow load that is applied to our structure is not the ground snow load but in most cases the flat roof snow load.
The north zone design live load equates to 40 pounds per square foot the middle zone equates to 30 pounds per square foot and the south zone equates to 20 pounds per square foot.
10 to 12 inches of new snowis equal to one inch of water or about 5 pounds per square footof roof space so you could have up to 4 feet of new snow before the typical roof will become stressed.
It also informs you whether you should immediately remove some of the snow or you can wait a little bit longer.
The north zone middle zone and the south zone are identified on the roof load zone map above.
The publication is 20 and may be purchased from msu civil engineering at 406 994 2111.
Snow loads are influenced by elevation general weather and moisture patterns slope direction exposure roof or trail bridge configuration and wind direction and severity.
Overestimation of snow loads can unnecessarily increase the cost of construction.
The flat roof snow load is calculated using formula 7 3 1.
Snow load is the downward force on a building s roof caused by the weight of accumulated snow and ice.
