Calculating the load on a flat roof is a challenging task for the layperson that involves knowledge of building materials their weights and local building codes.
Patio roof support load bearing.
Maximum rafter spans for a patio roof.
This will hold the weight of the porch roof while replacing the beam.
The standard guide in the u s the asce 7 05 lists weights and stresses for all building materials expressed in pounds per square foot.
The chain of load distribution begins at the roof covering material which exerts force on the cover s ceiling joists.
Join the support beam and wood load bearing post by toenailing them together and attaching two metal t braces to opposite sides of the beam with galvanized 10d box nails.
The basic idea behind the structural design of patio covers is to safely transfer weight from the top of the patio cover to the foundation.
With the old beam uncovered the temporary beam can be placed on the braces you ve made images 1 and 2.
Textured white non tapered square shaft load bearing endura aluminum empire style column.
The tables below give maximum spans for rafters and beams.
Once that s done and the support strapping is reinstalled on all gas electric plumbing and heating lines you ll have the satisfaction of completing a job that will last for the life of the house.