Roof Tie Down Example

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.

Roof tie down example.

The uplift connection forces are based on a maximum 33 foot mean roof height and wind exposure category b or c. 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. 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.

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. What kind of solid objects can be used to tie a sling to. A strong living tree with a large diameter. A sling is a polyamide strap that is tied around a secure object at the opposite side of the work location on the sloping roof.

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. 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.