Roof Sheathing Thickness 16 Oc

Loads will vary with the pitch of the roof.

Roof sheathing thickness 16 oc.

Most roofs will be sheathed in plywood at least 3 8 inch thick. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. Nominal panel thickness table b assists in calculation of. 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.

The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. 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. Sheathing should be a minimum of 19 32 inch thick. 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.

Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. The typical thickness range for sheathing is 3 8 to 3 4 inch. 16 oc 0 594 0 625 20 oc 0 594 0 625 24 oc 0 719 0 750 32 oc 0 875 1 000 48 oc 1 125 a the values in this table correspond with those published in the 2005 edition of the. 8d ring shank nails should be used instead.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. 1 inch 25 4 mm.