Roof Tie Down Example

A strong living tree with a large diameter.

Roof tie down example.

Improper tie down practices are all too common and many accidents and injuries happen because someone didn t take their time loading cargo on the roof of the car. Rafter or truss uplift connection forces from wind asd pounds per connection a b c d e f g h. By using proper methods you can haul your cargo safely to your destination. 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.

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. Quick and easy roof wire tie down s. 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. 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.

What kind of solid objects can be used to tie a sling to. 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. The uplift connection forces are based on a maximum 33 foot mean roof height and wind exposure category b or c.