Roof Tie Down Example

It s important to use the right tie downs and place the item correctly on the roof rack if you want to avoid damaging your cargo or causing an accident.

Roof tie down example.

A strong living tree with a large diameter. The safety hook at the end of the rope which runs over the sloping roof is connected to the sling. The uplift connection forces are based on a maximum 33 foot mean roof height and wind exposure category b or c. I ve seen quite a few rooftops where the wires running from the hamshack to the antennas are just laying across the roof in an unsightly arrangement.

An example of retrofitting mid span rafter ties is at sagging roof repair where sagged rafters are jacked straight and mid span horizontal 2x lumber is nailed in place replacing older collar ties that were located near the ridge. An easy solution to the mess of wires draped across your rooftop. Rafter or truss uplift connection forces from wind asd pounds per connection a b c d e f g h. For example if an unfinished garage has a roof with a 4 12 slope and the roof span is 24 feet the rafter ties should be located no more than 16 inches up from the plate according to modern building standards.

Quick and easy roof wire tie down s. By using proper methods you can haul your cargo safely to your destination. 1 inch 25 4 mm 1 foot 304 8 mm 1 mile per hour 0 447 m s 1 pound 0 454 kg 1 pound per square foot 47 9 n m 2 1 plf 14 6 n m.