Re: Building a Bridge

Posted by JMS/MN on May 23, 2005 at 08:18:49 from (204.73.106.15):

In Reply to: Building a Bridge posted by MH on May 23, 2005 at 05:13:04:

In the mid-60s, as part of our Green Beret training, we had to construct a bridge using whatever timber was in the area, and it had to carry a deuce-and-a-half- with us in it, after we were done. If you could find the Special Forces Handbook (possibly on the Barnes & Noble site), you could get some info on timber trestle bridges, moment, and bent calculations using different materials, although most of the info is on how to destroy them. Another Army manual is the engineer's bible- FM 5-499- also available on line through some Army sites. Personally- I like paul's idea- just get some big-butt steel beams, comparable to bridges in your area, do it once and be done with it. My shop hoist hangs from a single 6 1/2 inch by 12 inch steel beam, 19 foot span, and has had up to two tons hanging from the center of it. Couple beams like that would certainly be a good support for decking over a ten foot stream.

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