The roof truss spacing standard is important because eighty percent of new homes are built with standard pre fabricated trusses.
Space between single wrap strap and roof truss.
These standards are as follows.
A single wrap that is not nailed properly gets dropped back to clips level if it has three nails on the front side.
For example a slope of 6 12 means for every 12 inches of horizontal distance the slope of the roof will rise 6 inches vertically.
Typical roof truss.
This roof can be lifted up a couple of inches before the strap really becomes effective in holding.
This is the distance between trusses.
Despite the fact that the photo indicates every truss is strapped this strap between the top of a masonry wall and the truss is a demonstration of a poor installation.
Next is single wraps a strap that goes over the top of the truss rafter and down the other side secured with a minimum of two nails in front and one more on the back of the wrap.
Nail each hurricane strap to your truss or rafter with 16 penny framing nails when you install hurricane straps to a roof.
Plus you will not have to worry about figuring out truss space on the roof.
The rise will be the elevation change over the 12 inches.
The run or the base number is 12 inches.
This means that if you re in charge of repairing or installing roofing trusses you ll be expected to hold to these standards.
This ensures that your trusses or rafters won t move during the installation of your straps.
To get your marks for truss layout divide the width of the span by the number of openings you will have between the trusses and not by the number of trusses.
Standard roof truss spacing.
Simpson strong tie category roof truss and rafter connectors ties and straps for cold formed steel construction.
The standard roof truss spacing is 2.
This method is safer and more reliable.
Make sure that your truss and rafter are also toe nailed in place before you install your hurricane straps.
Pitch slope the pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run.
Straps single wraps single wraps will wrap over roof truss to the opposing side and require a minimum of 2 nails on the front of the strap and one on the opposing side typically a roofing company is not going to have all the roof decking plywood removed that would allow them to have access to all the locations that need to be retrofitted.
The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases.
You will also incur additional costs because it is much harder to deck and shingle a roof that is 12 12 pitch versus a 4 12 roof.
Straps should never be bent sideways before attaching to the truss or rafter.
