Roof Live Load In Minnesota

The roof shall be designed for the live load indicated in table r301 6 or the snow load indicated.

Roof live load in minnesota. A clay tiled roof may have a dead load. Since the late 1960s and early 1970s roof construction for residential structures has consisted of pre manufactured engineered roof trusses. 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. This issue of live load vs.

The northern portion uses 60 pounds per square foot. 0 7 x 50 psf 35 psf. Victor staley a building official in the town of brewster mass responds. Round footing sizing table.

This downward imposed load on the home is also known as the snow load. 0 7 x 60 psf 42 psf below line. Psf pounds per square foot above line 60 psf. Soil classification and bearing table.

The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. Frost depth map minnesota rules 1303 1600. G see minnesota rules chapter 1335 flood proofing regulations. The load increases with the use of heavier roofing material.

The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot. The minnesota department of commerce requested some initial research be completed to identify opportunities for additional load capacities for these roof components. Egress windows for manufactured homes jan. 60 ground snow psf below line 50 psf 50 ground snow psf.

F the ground snow loads to be used in determining the design snow loads for buildings and other structures are given in minnesota rules part 1303 1700 ground snow load to verify by county. To calculate roof snow load per residential building code. Ground snow load might seem somewhat confusing until you read the basic premise that is identified in irc section r301 6 which states. The north zone middle zone and the south zone are identified on the roof load zone map above.

Square footing sizing table. The southern portion of minnesota which includes the twin cities metro area uses a ground snow load of 50 pounds per square foot. Snow load map ground load and roof load map per minnesota rules 1303 1700.