Hip Roof Rafter Ties

The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures.

Hip roof rafter ties. A rafter tie is a tension tie in the lower third of opposing gable rafters that is intended to resist the outward thrust of the rafter under a load. The lssj is designed with a versatile hinged seat allowing for easy field adjustment to typical rafter slopes from 0 12 of 12 12. In many situations you ll find that ceiling joists installed parallel to the rafters are intended to function as rafter ties. I have 4 ties connecting the two walls rafters that run parallel to the house perpendicular to the ridge.

Some of these can support the roof and prevent ridge sagging and wall spreading. A hipped roof can be designed without rafter ties or internal columns by using the wall plates as tension members and the roof deck for stability. The thrust to worry about is at the tails of the common rafters. The roof framing mock up below shows a standard rafter tie.

All the research i ve done never shows a tie for a hip roof. Depending on the size of the roof most hip roofs will have 4 6 short jack rafters that are spaced out every 20 inches 51 cm between the hip rafters and the king common rafters. There are two ties attached to the house wall that run to the hip wall. Are these two ties necessary.

Rafter to hip or rafter to valley connections. The simpson strong tie lssj field adjustable jack hanger is the ideal hanger for connecting jack rafters to hip valley members. 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. Featuring a versatile hinged seat the lssj is easily field adjustable to typical rafter slopes with a max slope of 12 12.

Its simple design makes installation intuitive and quick resulting in lower labor costs. Someone with more knowledge please correct me if i m wrong. If you build a square hip roof you can do it without ceiling joists. One way to avoid rafter ties is to use a post at each end of the ridge beam but that clutters up the internal space and may not be an acceptable solution.

The lssj field adjustable jack hanger is the ideal hanger for connecting jack rafters to hip or valley members. In my attached garage the roof is hipped on the wall opposite the house wall. Collar ties rafter ties tension beams structural ridge beams.