7 16 cat ps2 10 osb sheathing application as 4 x 8.
Osb roof sheathing thickness 16 oc.
Relationship between span rating and nominal thickness for osb a nominal thickness b in span rating.
Floor span panels are designed for single floor applications and are manufactured with span ratings of 16 20 24 32 and 48 inches o c.
For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load.
Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot.
Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively.
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Design capacities for oriented strand board allowable stress design asd.
Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.
The span rating on floor span panels appears as a single number e g 20 o c.
Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.
Floor sheathing over supports spaced up to 16 inches o c.
We re in dallas so we don t engineer for tremendous live loads for an asphalt shingle and we feel comfortable with 16 oc rafter spacing and 7 16 osb decking.
1 inch 25 4 mm.
16 oc 20 oc 24 oc 32 oc 48 oc 500 575 770 1 050 1 900 180 250 385 685 1 200 2 600 2 900 3 350 4 000.
With edge support and the same snow load 3 8 inch osb can be used.
Osb used in structural sheathing applications in the u s.
The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.
Osb roof decking thickness 7 16 1 2 or 5 8 currently we space rafters 16 oc and use 7 16 osb with h clips.
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