How To Install Temporary Roof Supports

These pieces act as the bases that hold the legs of the support beams.

How to install temporary roof supports.

Once it is plumb mark the position on the porch roof. For a perpendicular support you should use square pieces of 3 4 inch plywood or other scraps of wood that are at least 10 inches wide. Place the wood on the floor or ground and hold in place with small screws. Stand a post up in the bracket and hold a level on its side.

Bring in a sledgehammer and insert some wooden pieces into the ground. Vertical shoring against the top chord of the joist is most certainly the least expensive choice. I did not interpret your question as whether to support the open web joist on their top or bottom chord. The temporary support that you use will need to have a firm footing in order to hold up the weight.

I would never install temporary shoring of open web joists on their bottom chord. Bring in the temporary beams and install them in place. Once both of the brackets are secured set a post into them. Attaching the two with bolts every foot or two 50 cm.

If the ground area is hard and difficult to penetrate then you can go for an alternate solution. Make sure that the beams support the roof well and are not left loose or wobbling. Continue installing porch roof supports. Install another bracket in this position.

Use several bolts at the ends of the wider lumber 7x2. The ideal height of such beams should be 2 10 foot longer than the distance between the roof and the ground.