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old bones
03-17-2002 18:04:41
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Re: HD Shelf in Shop in reply to Richard, 03-17-2002 13:55:58
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you are right not to try hanging the loft floor from the ceiling/roof, as your truss rafters are not designed to carry the additional load. i seriously doubt that you can buy a steel beam for the same money as lumber, but you'll have to determine that, and you'll have to modify steel H or I beams to attach your 2x6 floor joists. i would suggest using laminated beams. these are available through lumberyards, and are basically a pieces of 1.75" thick plywood of different heights-9.5", 11.5", etc. the lumberyard can tell you what you need if you have all the weights with you. their laminated beam supplier has engineers on hand that can, for no charge, tell you what you need, and your options- 2 layers 14" tall, 2 layers 9.5" tall, etc, depending on your projected loads. otherwise, if you can get your hands on a "sweets file" book, it will tell you how to make a lumber box beam, or any number of other headers, but you will need to determine how much weight the beam/header will be carrying. usually a good carpenter (not a neighborhood wood-butcher) has these, and some libraries have access to them. whatever you do, don't let anybody tell you that you can clearspan this distance. you can't, unless you want to sacrifice a lot of headroom.
if you check out the lam-beam locally and can't get any results, post back and i'll get you in touch with someone who can help you out. bones.
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