Thread: For you concrete and wood guys.....

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Originally Posted by Dave Severson

Yup, that would be it Brian.... You just say it a lot better!!!!!!!!

I've had practice---43 years of techno babble to customers!!!!! If I was doing it, I would use at least a 1/2" thick x 18" diameter plate on the bottom to distribute the load over a large area---Ya don't want a "point load" to fracture your concrete pad. As long as you are tying into the floor joists overhead, you can get away with 6 equally spaced 1/2" diameter fasteners, epoxied into the pad to the full depth of the pad. Up top I would use a 2" x 10" or a 2" x 12" and make it about 8 to 10 foot long, run it at 90 degees to your joists, and tie into every joist with it. Put a 3/8" plate 10" square welded to the top of the pipe and bolt it to the 2 x 10 with eight 3/8" diameter bolts. Use a 4" deep I-beam for the swinging gantry, with the trusswork on top of it, and where it ties into the pipe, put 2 rollers on it with the roller axis vertically aligned so that with a load suspended on it it will roll around the main support pipe and not bind.