Michigan Roof Live Load

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.

Michigan roof live load.

Use our michigan ground snow loads map to easily determine the ground snow load 2009 michigan building code. Load wind speedd mph seismic design categoryf weatheringa frostline depthb termite c table r301 2 5 90 see sec r301 2 2 1 figure r301 2 2 severe 42 see note b figure r301 2 6 see note e yes see note g figure r403 3 2 see footnote j for si. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. For roof live loads of 12 psf or 16 psf.

Table r905 1 1 2 underlayment application. The state has amended the snow load requirements of the 2009 ibc figure 1608 2 and the 2009 irc figure r301 2 5 table r301 2 1 and table. 1 pound per square foot 0 0479 kn m2 1 mile per hour 1 609 km h. This downward imposed load on the home is also known as the snow load.

Established in 1989 our company is family owned and operated. Roof covering section maximum ultimate design wind speed v ult 140 mph maximum ultimate design wind speed v ult 140 mph. The loads are based on adjusted roof snow loads from the governing building code. Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched.

Roof loads are a downward vertical force on the home. You can click on the map below to find the design ground snow load for that location. Where snow isn t a problem the live load can come from people working on the roof and any equipment they take on to the. 2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes.

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. Figure 1608 2 for any location in the state of michigan. The live load on a roof is the weight of any temporary objects on the roof. For roof slopes from two units vertical in 12 units horizontal 2 12 up to four units vertical in 12 units horizontal 4 12 underlayment shall be two layers applied in the following manner.