Do trusses need blocking?
Do trusses need blocking?
Blocking is not typically installed in most interior parts of the country because the truss-to- bearing connections and the relatively close roof sheathing attachment is assumed to be sufficient to prevent any movement. – A block may not be required in every space between trusses.
What is a truss blocking panel?
A new provision in the 2009 IRC , 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 9¼”.
Is blocking required for ceiling joists?
According to Section 6.3: “Rafters and ceiling joists having depth to thickness ratios exceeding 5:1 (e.g., 2×10) need blocking at their points of bearing to prevent rotation or displacing laterally from their intended position …
What is a heel block used for?
Heel blocking is a commonly used method to transfer in-plane lateral loads from the braced wall panel to the roof diaphragm. Structural engineers may have questions regarding the prescriptive code requirements or the capacity of commonly used heel blocking to achieve a desired load transfer.
Do I need blocking between rafters?
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. Each block is 2×4 or 2×6 depending on the size of the rafters, and is secured to the top plate.
Do I need blocking between ceiling joists?
What are the blocks called between rafters?
To some, the term “rollover” blocking is used, reflecting the concept that it prevents rolling over of trusses or rafters. Others call it “seismic” blocking, clearly denoting its purpose with respect to an earthquake threat.
Is blocking between studs required?
So any sheathing edges that don’t land on standard framing (studs, plates, windows/doors) need to be supported by blocking. All edges of wall sheathing must be supported by and nailed to framing. This edge didn’t land on plates, so install blocking to support it.
Is blocking required for rafters?
Things You’ll Need 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. Each block is 2×4 or 2×6 depending on the size of the rafters, and is secured to the top plate.