Roof Sheathing Thickness 16 Oc
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
Roof sheathing thickness 16 oc. 8d ring shank nails should be used instead. Loads will vary with the pitch of the roof. 24 16 teco sheathing span. 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.
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. Never attach roof sheathing with staples. 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. 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.
The typical thickness range for sheathing is 3 8 to 3 4 inch. 1 inch 25 4 mm.