Roof Hip Spans Eng Tips

If your garage is 24 feet wide and has a 4 12 roof the new rafter ties can be placed no more than 16 inches up from the plate without additional engineering.

Roof hip spans eng tips.

Promoting selling recruiting coursework and thesis posting is forbidden. Hip roof design hip roof design joe79400 structural op 25 mar 20 00 44. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Maximum rafter spans for a patio roof.

The perpendicular wing is 24 deep so the rafters span 12 feet. From a practical perspective it s difficult to use high rafter ties on a low pitched roof because the force in each tie increases with the inverse of the pitch. Eng tips s functionality depends on members receiving e mail. An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry.

The width of the main part of the house is 28 feet so the rafters span 14 feet from wall to ridge. After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors. Span configuration and load conditions. The roof slopes are about 8.

The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. The valley rafter span is approximately 19. 12 so the hip is not quite at a 45. Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1 15 30 snow tile 47 30 snow 40 20 snow 1 25 20 construction or rain not snow load 55 1 15 40 snow.

Hip backing angle 15 4 for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. By joining you are opting in to receive e mail. Looking at a brick ranch built in the 70 s the roof is hip with a ridge board house is l shape configuration so 2 ridge boards and each board has a 2x4 a coup hip roof support structural engineering general discussion eng tips. I know that by conventional engineered analysis a post is required.

For heavy roofs or in.