Bracing prevents trusses from bending twisting or otherwise deforming.
Floor truss strongback bracing.
Load bearing walla wall specifically.
Strongback bracing also satisfies the lateral bracing requirements for the bottom chord of the truss when it is placed on top of the bottom chord is continuous from end to end connected with a method other than metal framing anchor and properly connected by others at the ends.
Truss 2x6 strongback august 1 2016 mitek usa inc.
Ansi tpi 1 2002 includes information in the commentary to section 7 5 2 4 regarding the use of strongback bridging to reduce the effects of differential deflection in floor trusses.
The 2x6 serves the same purpose as bridging in a standard floor distributing concentrated loads over a wider area.
Intervals one run for a 20 ft.
Typically roof live load is snow while floor live loads are furniture human occupancy storage.
It serves to make the floor more comfortable for those living and working in a structure.
I am looking for strongback bracing requirements for a 12 in.
On bottom chord bearing trusses the ends are tied together with 2x4 ledgers that also serve as a nailing base for the perimeter of the plywood deck see illustration below.
Strongbacks can be altered to allow hvac installations as long as three 3 consecutive joists are attached.
Strongbacks interconnect joists to share vibration amongst floor members so ideally they run across a maximum number of joists.
Strongback a 2x6 lateral brace used with its long dimension in a vertical orientation running perpendicular to the trusses and.
Strongback bridging is an excellent and inexpensive way to improve the overall rigidity of the floor system and eliminate vibration.
If you need a pathway across the strongback for an hvac or plumbing run you can cut the strongback making sure that no less than 3 joists are connected per strongback segment.
All open joist truss layout plans include strongback bridging specification and location.
Ok back to the question.
Ixing of floor trusses to bracing walls f.
For instance can three trusses of a type be tied together by strongbacks then the next series of different trusses be tied together without.
Deep residential floor system with trusses in lengths up to 19 ft.
With floor trusses bracing becomes a permanent part of the floor structure.
72 5 0 mi ni m u m girder floor truss floor truss jacks a a bearing wall girder floor truss floor truss jacks bearing wall cantilevered floor truss two 2x rim joists 24 max.
And parallel to floor truss span strongback lateral supports 24 max.
Roof floor truss manual 7 31 08 10 43 am page 12.
Truss two runs for longer trusses.
