Roof Sheathing Thickness Code

2018 international residential code.

Roof sheathing thickness code.

On the upcodes website. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. Chapter 8 roof ceiling construction. Wednesday june 13 2018.

Are h clips required by the building code for roof sheathing. Minimum thickness of lumber roof sheathing for si. On the upcodes website. You would go to table r503 2 1 1 1 to determine minimum nominal panel thickness.

Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. Allowable spans for lumber floor and roof sheathing a b for si. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. H clips are also necessary for other wood panel thickness and span combinations.

According to 2009 irc table r803 1 minimum thickness of lumber roof sheathing. Never attach roof sheathing with staples. 8d ring shank nails should be used instead. Minimum 270 fb 340 000 e.

Contains sections covering roof framing roof sheathing and roof ventilation. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Loads will vary with the. And for wood structural panel sheathing r803 2 2 allowable spans.

One or two h clips will often allow a longer span between roof trusses rafters. Sheathing is installed perpendicular to roof trusses. Chapter 9 roof assemblies. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

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. Minimum 420 fb 660 000 e. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. 2018 international residential code.

1 inch 25 4 mm.