Roof Snow Load Maine
In our case let s assume that our structure has a flat roof roof slope 5.
Roof snow load maine. The north zone middle zone and the south zone are identified on the roof load zone map above. We have a metal roof though it s slope is very shallow nearly flat 1 of vertical drop for every 10 horizontal. It also informs you whether you should immediately remove some of the snow or you can wait a little bit longer. Overestimation of snow loads can unnecessarily increase the cost of construction.
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. The snow load that is applied to our structure is not the ground snow load but in most cases the flat roof snow load. A b c d e f g h 1 j k l m n o p q r s t u v w y. Other considerations for sloped roofs can be found throughout chapter 7 of asce 7 10.
The flat roof snow load is calculated using formula 7 3 1. Design ground snow load for acton me 04001. 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. Modern buildings are designed with snow load in mind said dr.
Edwin nagy at the university of maine department of civil and environmental engineering. Make sure to not wait for too long though. Snow load is the downward force on a building s roof caused by the weight of accumulated snow and ice. The minimum design roof snow load after allowed reductions shall be 30 psf.
The publication is 20 and may be purchased from msu civil engineering at 406 994 2111. Basing on the roof parameters you specified in the first section our snow load calculator displays the maximum allowable snow cover thickness and snow weight. Snow loads are influenced by elevation general weather and moisture patterns slope direction exposure roof or trail bridge configuration and wind direction and severity. 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. In this area it seems like everyone is falling in love with metal roofs.