doublewhopper Posted September 30, 2005 Share Posted September 30, 2005 I went to home depot today and bought black schedule 40 pipe in a 7 foot section. then I took it home and filled it with 5000 psi extra heavy duty concrete. It will take a full 28 days to completely cure but I would expect that after that it would be able to hold at least 600lbs. I am going to completely load it up when it is cured to test it. What does everyone think about those predictions and has anyone else filled their hollow bars with concrete? Thanks Quote Link to comment Share on other sites More sharing options...
DAN PRAYDIS Posted September 30, 2005 Share Posted September 30, 2005 I went to home depot today and bought black schedule 40 pipe in a 7 foot section. then I took it home and filled it with 5000 psi extra heavy duty concrete. It will take a full 28 days to completely cure but I would expect that after that it would be able to hold at least 600lbs. I am going to completely load it up when it is cured to test it.What does everyone think about those predictions and has anyone else filled their hollow bars with concrete? Thanks ← good idea the concrete will help it from bending at work we fill car stoppers with concrete if we don't use it and a truck backs into one it bends but the ones filled they bend slightly and are in better shape Quote Link to comment Share on other sites More sharing options...
Sybersnott Posted October 4, 2005 Share Posted October 4, 2005 I went to home depot today and bought black schedule 40 pipe in a 7 foot section. ← Uh, did you make sure that you can FIT Olympic plates on that?? 2" diameter is what's measured inside of the pipe, not outside. Quote Link to comment Share on other sites More sharing options...
doublewhopper Posted October 5, 2005 Author Share Posted October 5, 2005 yep, it fits. waiting for the concrete to cure then, I'm stress testing the f'er. Quote Link to comment Share on other sites More sharing options...
opnsysme Posted October 7, 2005 Share Posted October 7, 2005 Let us know! It sounds liek a good idea. During yoru stress tests will you do any that includes dropping the bar from certain heights, like to simulate a clean or push press? Quote Link to comment Share on other sites More sharing options...
doublewhopper Posted October 8, 2005 Author Share Posted October 8, 2005 I plan on using the bar for heavy deads, pressing overhead and flat and arm and grip stuff. I don't plan on droping it from overhead I think I could get away with that if I lifted in a sand pit outside or something. I am hoping that 500-600 will hold on the bar. I want to lift right away with the bar but the cement won't be at 5000 psi until 28 days. and I want it completely solid.[ Quote Link to comment Share on other sites More sharing options...
tomorrow Posted October 11, 2005 Share Posted October 11, 2005 why not just fill it with rebar? as much as you can fit into it... then fill it with the concrete or sand. Quote Link to comment Share on other sites More sharing options...
lightcycle Posted October 11, 2005 Share Posted October 11, 2005 I went to home depot today and bought black schedule 40 pipe in a 7 foot section. then I took it home and filled it with 5000 psi extra heavy duty concrete. It will take a full 28 days to completely cure but I would expect that after that it would be able to hold at least 600lbs. I am going to completely load it up when it is cured to test it.What does everyone think about those predictions and has anyone else filled their hollow bars with concrete? Thanks ← good idea the concrete will help it from bending at work we fill car stoppers with concrete if we don't use it and a truck backs into one it bends but the ones filled they bend slightly and are in better shape ← If he got 1 1/2 pipe it has an outside diameter of 1.9" a good site to get real diameters of nominal pipe measurements is vogel tool and die http://www.vogeltool.com/ansi.html Quote Link to comment Share on other sites More sharing options...
joehawkins Posted October 20, 2005 Share Posted October 20, 2005 You are lucky, the Home Depot near me only has that stuff in 10' lengths, I'm gonna have to do some cutting. I bought a cheap set of olympic ring collars that I'm gonna weld on as weight stoppers, and I was gonna fill the bar up with concrete too. Please post on how that works out so I know what to do. Also, I wonder what the finished weight of the bar will be. I suspect that it will be more than the 45 lbs of an Olympic bar. Quote Link to comment Share on other sites More sharing options...
doublewhopper Posted October 29, 2005 Author Share Posted October 29, 2005 Okay today I stress tested my homemade thick barbell filled with high strength concrete. results are it held in my powerrack 585lbs. I didn't go any further because I did not want to damage the bar, but I was pleased with that. Quote Link to comment Share on other sites More sharing options...
joehawkins Posted October 31, 2005 Share Posted October 31, 2005 Nice. Do you know how much the bar weighs with the concrete in it? I'm about to fill mine, seems like a good thing to know so I can be accurate in my training log. Quote Link to comment Share on other sites More sharing options...
doublewhopper Posted October 31, 2005 Author Share Posted October 31, 2005 I have no idea if I had to guess based on the feel it would be about 35-40 pounds. Quote Link to comment Share on other sites More sharing options...
joehawkins Posted October 31, 2005 Share Posted October 31, 2005 Close enough for government work. Thanks for the info. Quote Link to comment Share on other sites More sharing options...
Sybersnott Posted November 1, 2005 Share Posted November 1, 2005 I didn't go any further because I did not want to damage the bar, but I was pleased with that. ← Create MAJOR damage!! You paid for it... c'mon... USE it!! Now is not the time to be shy - load it up and see what you can do on it!! Quote Link to comment Share on other sites More sharing options...
Lenny Posted November 7, 2005 Share Posted November 7, 2005 just for your info, if it is plain concrete the 5000psi is measured for compressive strength. not flex (which is the type of force applied to barbell lifting) if you want more flex strength you need to add a plastisizer or other compound, the rebar suggestion with concrete is also great. Quote Link to comment Share on other sites More sharing options...
DAN PRAYDIS Posted November 7, 2005 Share Posted November 7, 2005 just for your info, if it is plain concrete the 5000psi is measured for compressive strength. not flex (which is the type of force applied to barbell lifting) if you want more flex strength you need to add a plastisizer or other compound, the rebar suggestion with concrete is also great. ← you are right lenny but the way the concrete is pored in between the pipe it would have to shrink and slide out for the pipe to bend or the pipe will crack and snap at the point of the bend but it is almost as strong as steel Quote Link to comment Share on other sites More sharing options...
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