Roof Design

Retain a structural engineer! That is what he is paid to do.

It seems like most building agencies would require that the roof be designed and stamped by at minimum a civil engineer, and possibly even a structural engineer, especially some area of public use.

Yes. I ignored this thread when I noticed that no location was indicated. Good answer! Also, the roof is extremely large for the DIY approach. Mommy, I'm scared!

As indicated earlier, if it is a structural component contact you local building official. He will likely tell you that you need a engineer to stamp any structural components, and in some cases, there may be nonstructural aesthetics components that require an architect's stamp in your jurisdiction. On some projects that involve structures you just need and engineers stamp.

Roll Form Group www.rollformgroup.com Edmonton facility produce structure component as of standing seam Roof, why not contact them and see that is what you are looking for?

Go to the 'HALF POINT' design used in mideaval europe if you can afford it because it will stay and be around for several centuries.... or just build a 'hangar' like structure and insulate it..... good luck

Hello cool moody,

One possibility is to use open web steel joists spaced at, say 2.0m (6.5') centers with a 0.76mm x 38mm (22 Ga. x 1.5") steel deck spanning between the joists.

If the joists span side to side (30m), the joist depth likely would be about 2.2m (7.2') provided the snow load does not exceed, say 2.0kPa (40 psf) and you don't clutter the roof up with too much mechanical equipment.

If the joists span end to end (35m), the joist depth would be about 2.6m (8.5 feet) with the same provisos as above.

In any event, you will need to retain a structural engineer to provide a sealed Roof Framing plan which will be required by the authority having jurisdiction in your area for an assembly occupancy such as a hall.