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Posted on 10/21/20 at 2:13 pm to No Colors
quote:
My grandfather put some steel beams across it in the late 1940s
Which has what relevance in 2020? Aside from just routine exposure, no data on what stresses it has been subjected to over the last 70+ years.
quote:
Log trucks will be 80,000 pounds.
Which, by the way, is about what tanks weighed until the 1960s.
quote:
But only half the load will be on the bridge at any one time.
That will be the half that collapses this thing, then.
I'm not actually an engineer, but if you're putting anything of value and, potentially folks safety on the line, I would hire a real engineer to come out, take some measurements, do some mitigation recommendations and overengineer the span for your intended purposes.
Your insurance company and the drivers will thank you.
This post was edited on 10/21/20 at 2:14 pm
Posted on 10/21/20 at 4:13 pm to finchmeister08
The picture from a distance shows the canal to be rather shallow. Save your bridge for your recreational purpose. This crossing could be easily filled with trees tops, logs, small culverts, debris and filled for crossing logging trucks safely at little cost. Water can flow beneath and through and if you get to much rain, it will flow over. When logging is through, remove fill. This is a temporary crossing. Like a temporary right of way. Defiantly the least risk.
Posted on 10/21/20 at 4:21 pm to yattan
Is No Colors still alive?
All I'm gonna say is those splices look like shite and I hope you have one end released so that when the beams deflect they don't pull the embankment with them.
All I'm gonna say is those splices look like shite and I hope you have one end released so that when the beams deflect they don't pull the embankment with them.
Posted on 10/21/20 at 5:18 pm to yattan
quote:
The picture from a distance shows the canal to be rather shallow. Save your bridge for your recreational purpose. This crossing could be easily filled with trees tops, logs, small culverts, debris and filled for crossing logging trucks safely at little cost. Water can flow beneath and through and if you get to much rain, it will flow over
Dude. That creek is like 8 feet deep and 30 feet across. It can't be filled with logs and driven over.
Posted on 10/21/20 at 5:28 pm to No Colors
Yea I’m not driving or telling anyone to drive a loaded log truck across that.
Posted on 10/21/20 at 5:50 pm to No Colors
I would want to look at putting in culverts. I'm sure its expensive but safer.
Posted on 10/21/20 at 7:14 pm to No Colors
I’ve done It many times. 8 ft. deep and thirty ft. across is a piece of cake dude. Least it is not asking someone to risk their life for your clown show.
Posted on 10/21/20 at 8:16 pm to Woodbird
If your using load tables there is fos built in those capacities. So if he is under then he is good.
This post was edited on 10/21/20 at 8:18 pm
Posted on 10/21/20 at 8:33 pm to No Colors
Those beams would hold the weight the problem will be footing as mentioned. 2nd problem would be when they twist. You would need some cross braces in between them to prevent that.
ETA, those splices scare me.... I would drive a fully loaded truck over it
ETA, those splices scare me.... I would drive a fully loaded truck over it
This post was edited on 10/21/20 at 8:48 pm
Posted on 10/21/20 at 10:00 pm to No Colors
I’m sure it will be fine. 
When people say drive an empty truck over it first. What does that actually prove? If it falls through with empty truck you save a couple thousand dollars worth of logs but lose a hundred thousand dollar truck and trailer? If it holds you still don’t know if it will support a fully loaded truck. Personally, I think it would carry it. There is no way in hell I would try it though. Risk vs reward.
When people say drive an empty truck over it first. What does that actually prove? If it falls through with empty truck you save a couple thousand dollars worth of logs but lose a hundred thousand dollar truck and trailer? If it holds you still don’t know if it will support a fully loaded truck. Personally, I think it would carry it. There is no way in hell I would try it though. Risk vs reward.
Posted on 10/21/20 at 10:10 pm to highcotton2
Man I gotta say your farm has way more action than ours 
Posted on 10/21/20 at 10:16 pm to jimbeam
Today was actually pretty boring. Just harvesting soybeans and cutting some terraces out. I bet you don’t have to deal with terraces, just all that good perfectly level delta land. 
Posted on 10/22/20 at 1:15 am to No Colors
Could you get a good sized excavator out there, with a heavy wrecking ball to sit down and do some testing in different places, without risking too much? Get down in the ditch where you can watch and video the beams. It's not very scientific, but it may give you a warning if something is really weak.
Looking at your photo with only the beams, it looks like the creek bottom might be gravelly and maybe rocky. If it is, I think you should get a 4'x8'(bigger would be better) plate of 2" steel and lay in there under the center of your span, and put some added supports up from that. That's not ideal, but at least it's something. I also think that you should be tying those beams together somehow, so they don't twist in different directions when the stress gets on them. How deep is that water under your bridge?
Looking at your photo with only the beams, it looks like the creek bottom might be gravelly and maybe rocky. If it is, I think you should get a 4'x8'(bigger would be better) plate of 2" steel and lay in there under the center of your span, and put some added supports up from that. That's not ideal, but at least it's something. I also think that you should be tying those beams together somehow, so they don't twist in different directions when the stress gets on them. How deep is that water under your bridge?
This post was edited on 10/22/20 at 2:15 am
Posted on 10/22/20 at 10:21 am to No Colors
You need to drive some piling and lay a couple cross beams under the current beams, weld it all together, and then you’ll PROBABLY be fine.
Posted on 10/22/20 at 1:52 pm to No Colors
Don’t slow down!
Posted on 10/22/20 at 2:40 pm to Ace Midnight
quote:
Which, by the way, is about what tanks weighed until the 1960s.
Well, that settles it. No Colors needs to buy a pre 1960's tank and do a trial run.
Posted on 10/22/20 at 3:00 pm to EveryoneGetsATrophy
I don’t think I would try it. 80,000lbs is a lot. My only experience is I have a rail car over a canal like this. My dirt contractor drove his excavator over it. It was one of the big ones, not a mini x. He mad it just fine but I think rail cars are rated pretty high for weight.
So my advice is get 2 rail cars. Lol.
So my advice is get 2 rail cars. Lol.
Posted on 10/22/20 at 5:04 pm to tigereye58
A rail car would handle the weight fine. The problem would turn into, will the banks handle the weight of the rail car, plus the loaded trucks?
Posted on 10/22/20 at 5:06 pm to auggie
Plan B: Fill the creek with the first truck and load of logs that falls through the bridge.
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