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  1. #1
    turbo38t Guest

    Default NJIT Steel Bridge Competition.....

    posted over in the projects section but seems kinda dead over there..... http://www.millerwelds.com/resources...744#post280744

  2. #2
    Join Date
    Nov 2008
    Location
    Atl, Ga
    Posts
    371

    Default

    If it's for their entry into the AISC competition, shouldn't the engineering students be the ones welding it together? (are you an engineering student at NJIT?). If the rules are anything like Formula SAE, it's cheating to have a pro do the welding. If somebody told me to weld that "as-is" and put my name on the finished work (sloppy fitup on fishmouths/copes, mill scale not cleaned off, tacks look they were done by a newb) I would politely tell them "No". Hate to sound like a di*k, but reputation is everything in the small world of D17.1 work - It's a mistake to associate your name/rep with a poor quality finished product.

    If it HAS to be welded as-is with the mill scale I wouldn't TIG it at all. There's simply no way to make a good TIG weld with bad prep. O/A and RG45 filler is a little more forgiving of joint gaps and mill scale and is normalized as welded - No PWHT necessary.
    2007 Miller Dynasty 200 DX
    2005 Miller Passport 180

  3. #3
    turbo38t Guest

    Default

    Thx for the friendly response....no, they are students that design the bridge over the past 9 months or so. They then look for companies to donatetime, materials etc. One company donated the steel. One company donated the welding(my company), one company donated the machining(for the fixture). They paid for the fittings(somewhere around $12,000. All aspects of the bridge are designed by two captains with the input of the "bridge team" and professor. Then, when the time comes they come to my shop and we do a hands on build together. Generally I help them transfer ideas they have on Autocad/Solidworks and paper into the real world where there are always small details that are overlooked. This is a technology school and they are civil engineering students. They are not required to take welding classes. The mechanical engineering does a dune buggy competition but this is different. There is also a time frame usually when this comes around. This year we have 3 weeks to build it start to finish. That's not a lot of time. There isn't really time to be "**** retentive". Generally the bridge is an educated guess that's trying to compete in and win with light weight, aesthetics , assembly time, and function(load test, lateral movement test and a cantilever test). The welding is a bit overkill to be honest. Unfortunately you had to reply by being a negative Nancy and thinking this is a space ship going to NASA. Fortunately it's only a student bridge that is never going to be used for more than a one time competition. These students are very gifted and last year it one the regionals. That was my first year TIG welding this material. . Dave
    Quote Originally Posted by MR.57 View Post
    If it's for their entry into the AISC competition, shouldn't the engineering students be the ones welding it together? (are you an engineering student at NJIT?). If the rules are anything like Formula SAE, it's cheating to have a pro do the welding. If somebody told me to weld that "as-is" and put my name on the finished work (sloppy fitup on fishmouths/copes, mill scale not cleaned off, tacks look they were done by a newb) I would politely tell them "No". Hate to sound like a di*k, but reputation is everything in the small world of D17.1 work - It's a mistake to associate your name/rep with a poor quality finished product.

    If it HAS to be welded as-is with the mill scale I wouldn't TIG it at all. There's simply no way to make a good TIG weld with bad prep. O/A and RG45 filler is a little more forgiving of joint gaps and mill scale and is normalized as welded - No PWHT necessary.
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    Last edited by turbo38t; 02-14-2012 at 05:37 PM.

  4. #4
    Join Date
    May 2011
    Location
    Bossier Parish La.
    Posts
    539

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    I replied on the project section today but I guess you quit checking it. Do you have any finished pictures of what you did last year? I was wondering what one of these looks like in a completed state. I know you will post pictures of this one when it's finished, but wanted to see a previous one, ready for judging.

  5. #5
    turbo38t Guest

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    Here you go. These are the only pics I have from last year. If you google NJIT steel bridge competition and select images on the google page several pics will show up. Dave
    Quote Originally Posted by Bistineau View Post
    I replied on the project section today but I guess you quit checking it. Do you have any finished pictures of what you did last year? I was wondering what one of these looks like in a completed state. I know you will post pictures of this one when it's finished, but wanted to see a previous one, ready for judging.
    Attached Images Attached Images

  6. #6
    turbo38t Guest

    Default

    Here are a few pics of the regional competition today at NYU Poly Tech in Brooklyn, NY. They took first.
    Quote Originally Posted by turbo38t View Post
    Here you go. These are the only pics I have from last year. If you google NJIT steel bridge competition and select images on the google page several pics will show up. Dave
    Attached Images Attached Images

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