Roof Rafter Tie Down

For 16 inch on center framing that means connecting four trusses at each end of the house.

Roof rafter tie down.

A rafter tie forms the bottom chord of a simple triangular roof truss. Rafter ties should be at least 2 x 4 inches nominal. Tie down details for repair of storm damaged roofs in south east queensland page 2 of 13. Compare this with a similarly framed 12 12 roof that has similar loads.

You can possibly remove them altogether of you include posts in the gable walls to support a structural ridge. Rafter ties or ceiling joists acting as 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. A collar tie is a horizontal roof rafter compression connector that is located in the uppermost third of the span of a pair of opposed sloped or gable roof rafters. Tie down designs for tile and sheet roofs conforms to wind classifications of up to category n3 previously w41n designed to withstand a maximum gust wind speeds of 50 metres per second.

Simpson strong tie category roof truss and rafter connectors ties and straps for cold formed steel construction. For hip roofs the code specifies that hip and girder rafters or trusses be connected to exterior wall plates. Simpson strong tie 1 1 2 in 12 gauge wood to wood triple zinc pipe rail tie. For pricing and availability.

Simpson strong tie 6 in 18 gauge triple zinc steel rafter tie. For gable end roofs the florida code requires that you start by tying down roof framing members within 6 feet of each corner. If you are framing a cathedral ceiling there are a couple ways to deal with the need for rafter ties. 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.

In finding this location we do not count the additional length of the rafter that supports the roof eaves overhang or soffit. Simpson strong tie 5 2 7 in 18 gauge triple zinc steel rafter tie. 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. By upper third here we mean one third of the length of the rafter from ridge to top plate.

An updated inspection is required by your insurance carrier to qualify for additional savings on your insurance premium for your hurricane tie downs.