Attic Trusses And Rafter Ties

Check the attic so that you can get a better look at where the roof rafter collar ties will be installed.

Attic trusses and rafter ties.

This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. Some of these can support the roof and prevent ridge sagging and wall spreading. Hurricane ties offer a strong connection that will provide you with the strongest resistance against uplift. Simpson strong tie 6 in 18 gauge triple zinc steel rafter tie.

For pricing and availability. Instead of attaching the tie to the rafter you will be attaching it to the bottom chord of the truss. An engineer can design a roof with rafter ties on wider spacings look at the ridge and or wall plate as a beam if doing that. Installation is the same for trusses as for rafters see above.

Moving the rafter ties up only 16 inches from the plate the maximum allowed by code increases the tie force from 1 440 pounds to 2 160 pounds. Collar ties are necessary to prevent separation of the roof at the ridge due to wind uplift. Rafter ties are required by code unless the house is designed so that the walls or a structural ridge beam carries the full load of the roof. Collar ties are usually placed in the attic area of homes.

Click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to the compare list compare click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to the compare list add to list click to add item 26 spreadweb residential roof truss 5 12 pitch 87 to your list. Measure the distance between adjacent roof rafters so that you will know the amount of lumber to purchase. For pricing and availability. Rafter ties resist the forces caused by gravity loads that would otherwise cause the roof to pancake and push out the sidewalls.

The prescriptive provisions of the building code require rafter ties on each rafter pair and collar ties every 4. Collar ties rafter ties tension beams structural ridge beams. They are secured about three quarters of the way up the roof rafters.