ChargerMatt Posted June 25, 2012 Share Posted June 25, 2012 Anyone know the weight capacity of a approximately 20ft long 2x4 spanning across my garage ceiling sitting on end supported in the middle by a few 1x6s toward the middle? I know it's impossible to give me an accurate measurement, but will it support my 300 pound *** doing pull ups? Link to comment Share on other sites More sharing options...
BlueGenCoupe Posted June 25, 2012 Share Posted June 25, 2012 at a 20' span possibly, but I would say highly doubtful. At that length you will get a lot of flex and vibration. Link to comment Share on other sites More sharing options...
ChargerMatt Posted June 25, 2012 Author Share Posted June 25, 2012 at a 20' span possibly, but I would say highly doubtful. At that length you will get a lot of flex and vibration. If it doesn't flex or move, I should be good then? It moves a little bit when I go back and forth when starting and ending, but not while I'm in the process. Link to comment Share on other sites More sharing options...
ChargerMatt Posted June 25, 2012 Author Share Posted June 25, 2012 I should also added while I can only do 3-4 pull ups, the ones I will be doing as part of a routine will all be assisted, meaning much less downforce than normal. Link to comment Share on other sites More sharing options...
Big O Posted June 25, 2012 Share Posted June 25, 2012 putting a board perpendicular to the 2x4's will spread the load out (using it instead of the 2x4's) Link to comment Share on other sites More sharing options...
ChargerMatt Posted June 25, 2012 Author Share Posted June 25, 2012 putting a board perpendicular to the 2x4's will spread the load out (using it instead of the 2x4's) Good idea! I'll do that first thing in the morning. Link to comment Share on other sites More sharing options...
LFairbanks Posted June 25, 2012 Share Posted June 25, 2012 I would say highly doubtful that you would have any issues. I know while I was standing up my truss' during construction I was on one end and my buddy on the other the comined wieght was close to 500 lbs and the span was about 45 feet and didn't have any issues. He alone weighed around 300 and walked out in the middle all the time with no issues. Is it newer or older construction? As Big O mentioned the best way is to slide a 2x4 perpendicular to your truss' and even take it a step further and build a small wall (2 2x4's and a top and bottom plate so that it would look like this II) and that is maybe a quarter inch taller and tap it into place and then remove it when your done if your still nervous about it. Link to comment Share on other sites More sharing options...
ChargerMatt Posted June 25, 2012 Author Share Posted June 25, 2012 I would say highly doubtful that you would have any issues. I know while I was standing up my truss' during construction I was on one end and my buddy on the other the comined wieght was close to 500 lbs and the span was about 45 feet and didn't have any issues. He alone weighed around 300 and walked out in the middle all the time with no issues. Is it newer or older construction? As Big O mentioned the best way is to slide a 2x4 perpendicular to your truss' and even take it a step further and build a small wall (2 2x4's and a top and bottom plate so that it would look like this II) and that is maybe a quarter inch taller and tap it into place and then remove it when your done if your still nervous about it. I'm going to go out and get a 2x6 and run it on top of the 2x4s and screw it in then attach my pull up bar with some floor flanges. (Not in that order). Link to comment Share on other sites More sharing options...
Feets31 Posted June 25, 2012 Share Posted June 25, 2012 Park you car outside when you are doing push ups! You could get a bar and fasten it to the wall of the garage. If it gives you don't have to re-roof your garage. Link to comment Share on other sites More sharing options...
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