Roof Truss Ridge Blocking

A continuous band rim or header joist or roof truss parallel to the braced wall panels shall be permitted to replace the blocking required by this section.

Roof truss ridge blocking. And often in a humid environment. Required perimeter blocking on the sheathing attached to each side. The pics show a view of such a roof a plan view of trusses and blocking at and near the intersect and a 3d model of the three pieces of 2x blocking that fills in for the panel nailing. Rafter blocking is an essential part of the roof framing process in that the blocks provide a stop for ceiling insulation and a continuous surface for the roof sheathing to be edge nailed to.

Link is external and carried through to more recent versions is the use of blocking panels between roof trusses to connect the trusses to the braced wall panels below if the heel height is greater than 9. In my experience traveling across the country observing wood framed construction it was apparent that east of the rocky mountains structural wood members in line with supporting walls between roof framing cease to be installed. Blocking or boundary member. A new provision in the 2009 irc.

For trusses with heel heights less than 15 this blocking can be made of solid sawn dimensional lumber as shown in figure 1a. Each block is 2x4 or 2x6 depending on the size of the rafters and is secured to the top plate. Inspector want ridge blocking on truss roof. A complex roof with more than four hips and with valleys due to wall jogs means that there are usually cases where trusses don t conveniently come to a hip and ridge line junction.