Roof Rafter Tie

Figure 2 is an illustration of a roof constructed using rafter ties.

Roof rafter tie.

With the first collar tie in place you will follow the same procedure. Simpson strong tie category roof truss and rafter connectors ties and straps for cold formed steel construction. Where rafters are oriented perpendicular to the ceiling joists rafter ties should. A tension tie in the lower third of opposing gable rafters that is intended to resist the outward thrust of the rafter under load.

Measure for each new collar tie. Contrary to popular belief collar ties are not there to support rafters or to keep walls. Truss and rafter tie downs are used for wood construction and wood framing projects. Located in the bottom.

Located horizontally in the middle of the rafter s run or horizontal span neutral. This means that if you secure one end of the collar tie to the left side of a roof rafter you will nail it to the right side of the adjacent rafter. Collar ties prevent uplift. The tie force at the plate is 480 pounds and only 720 pounds when the ties are 4 feet up from the plate again the maximum allowed by code.

Definition of collar ties. High horizontal ties in the upper third of the roof under compression definition of mid span rafter ties. Compare this with a similarly framed 12 12 roof that has similar loads. Other facts about rafter ties.

Nail one end of the tie into the rafter with 3 inch nails. We detail these below. Illustration of roof with rafter tie. In most homes the ceiling joists also serve as the rafter ties.

Rafter ties are always required unless the roof has a structural self supporting ridge or is built using engineered. Rafter ties prevent spreading. Contrary to popular belief collar ties are not there to support rafters or to keep walls below from spreading under the weight of the roof. Definition of low rafter ties.

Secure the opposite side in the same manner.