There are beam calculators on the internet You have seen the tire dollies that they sell, you put one under each tire, and then you can move the car in any direction that you want. Of course, if your driveway has a severe slope, this might not be a good plan. Buy some equipment moving gear, roll the equipment out of the garage, do what you need to do, and roll it back into the garage. What really makes more sense is to do your lifting outside, and leave the roof alone. This would give you more headroom in the center of the garage, but not at the side. You get more storage space also, although you might need a rolling ladder to really make good use of it.Īnother approach would be to buy replacement roof trusses, cathedral style, and install all the new trusses before cutting the old ones. That way you don't alter the structural integrity of the truss. I think that it might make more sense to jack up the entire roof, trusses and all, and then add a couple of feet onto the side walls of the garage. The lower part of the truss is what keeps the weight of the roof from pushing out the side walls. Yeah, I have a professional engineering license. What you are proposing is really non-trivial, from an engineering perspective. ft on the roof for dead and live load, and again, 24X24 6 pitch asphalt shingles. That is one huge beam for a small garage, and will cost over 750.Īnybody want to size a steel beam, figure 40-50lbs load per sq. Local lumber yard sent out for calculations, came back with (3) 1 3/4 x 20 " deep LVL microlams. Beam will be supported at both ends, clear spanning 24 Ft. This would task the ridge beam with supporting about 500 lbs per linear foot. a total load of around 12,000 lbs, this reflects 1/2 the load on the outer bearing walls, half supported by the ridge. North East snow load, I come up with approx. In short I need to size a beam that will be set under the existing ridge board and create a structural ridge so the cross ties and collar ties can be removed. I want to remove the existing ceiling joist/ties that keep the rafters from spreading the walls in order to get a cathedral open area so I can use my car lift to it's full height. Have and existing garage, 24'x24' with straight gable roof.
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