This downward imposed load on the home is also known as the snow load.
The long dark loadded above roof.
The north zone middle zone and the south zone are identified on the roof load zone map above.
Since it is possible to use the attic for storage the live load of the attic floor is set at 20 psf according to code.
But the dl hangs on the rafter through its connection to the rafter and the roof diaphragm and the rafter starts acting as a column member with.
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.
Every house uses load bearing walls to stabilize the structure and support the weight of the home above.
Unlike the trussed roof live load and dead load of the rafters and ceiling joists must be accounted for as separate systems.
If you need a storage area above your garage strong ceiling joists are necessary to support the added weight.
The load combinations in table 3 1 are simplified and tailored to specific application in residential construction and the design of typical components and systems in a home.
Even without a second story the roof weighs a lot and.
The snow load which is based on local ground snow loading on a horiz.
These or similar load combinations are often used in practice as short cuts to those load combinations that govern the design result.
How to find a load bearing wall.
But what happens when you have a 12 12 pitch 45 slope or 20 78 12 pitch 60 slope roof.
Shingles are merely small segments of building material installed above the underlayment sheathing and trusses of a roof to beautify and protect your property from outdoor elements.
If you have an attic over your garage these joists also bear the load of your attic flooring and any materials you store in the attic.
As a result the live load dead load and distribution of forces are different.
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