In finding this location we do not count the additional length of the rafter that supports the roof eaves overhang or soffit.
Roof rafter tie down.
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.
When ceiling joists run perpendicular to the rafters inspectors may find rafter ties installed above ceiling joists as framing members every 4 feet running above the ceiling joists connecting opposing rafters.
Tie down details for repair of storm damaged roofs in south east queensland page 2 of 13.
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.
A rafter tie forms the bottom chord of a simple triangular roof truss.
You can possibly remove them altogether of you include posts in the gable walls to support a structural ridge.
For pricing and availability.
An updated inspection is required by your insurance carrier to qualify for additional savings on your insurance premium for your hurricane tie downs.
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.
Rafter ties should be at least 2 x 4 inches nominal.
We can refer you to a home inspector near you to help you find out of your home can benefit from our mitigation and retrofitting services including hurricane roof clips and hurricane ties for roof trusses and to learn more about wind mitigation inspection cost.
By upper third here we mean one third of the length of the rafter from ridge to top plate.
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.
Simpson strong tie 1 1 2 in 12 gauge wood to wood triple zinc pipe rail tie.
For 16 inch on center framing that means connecting four trusses at each end of the house.
Simpson strong tie 5 2 7 in 18 gauge triple zinc steel rafter tie.
Truss and rafter tie downs are used for wood construction and wood framing projects.
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.
Compare this with a similarly framed 12 12 roof that has similar loads.
Simpson strong tie category roof truss and rafter connectors ties and straps for cold formed steel construction.
Simpson strong tie 6 in 18 gauge triple zinc steel rafter tie.
