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(...) Well, no, I'd have to categorise it as a type of through truss. Hell Gate and Sydney Harbor Bridge, for example, are suspension arch bridges. Essentially all members below the arch are in tension and the deck is suspended from the arch. (The (...) (24 years ago, 8-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) I was going to leave this, but now that you started... I agree that is not a arch, and I expect that is was modelled on a truss. However, I'd call it a frame as it is pin jointed (trusses, I think are not). However, to be a frame all the (...) (24 years ago, 8-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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I'm not a civil, thanks for refining my critique. (...) Oh, indeed, it looks nifty. It's just not an arch. I'm not competent to comment on whether trusses can't be pinned, though. While we are identifying arches, though, I thought Ben "April Fool" (...) (24 years ago, 8-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) If we are talking bridge spotting, I'll be crossing this (road) one today: (URL) I cross it, I'll be looking at this (rail) one: (URL) picture: (URL) are about 8 miles from my office. Scott A (...) (24 years ago, 8-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) Mighty Mac... (URL) (I've posted links to it in the past I think) (...) bridges that look like it in shape (with the inward sloping cantilever towers) or in expanse and it was a ground breaker in its day. My hero, D. B. Steinman, (1) took a (...) (24 years ago, 8-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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See I learn something new every day. I know geometry but not much about structural engineering, so I saw an arch and figured it was an arch bridge. But now I have been inlightened, cool. jt (...) (24 years ago, 8-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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Larry Pieniazek wrote: <snipped> (...) Speaking of civil engineering, the American Society of Civil Engineers produces a 'Bridges' calender every year that features some very interesting and unique bridges. I have the 1999 and 2000 ones and I have (...) (24 years ago, 9-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) That was my initial thought, but in the photos, the curvature of the arch appears to vary, (hence it couldn't be curved rails) but it must just be an optical illusion from the lens curvature. As for arches, James Trobaugh's and Reinhard "Ben" (...) (24 years ago, 9-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) I'm not referring to his blue rail bridge, I mean that huge huge suspension arch he built. C'mon Ben, post another link. (last few UK hours) ++Lar (24 years ago, 9-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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The yellow Technic bridge is a bow truss. It is not an arch. Truss members are either in tension or compression and truss joints are assumed to be pinned or hinged. An arch works in compression. All of the bridges mentioned are cool! Build On! John (...) (24 years ago, 10-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) In fact that's not mine, but Torsten Wernecke built those: (URL) more detailed: (URL) I mean that huge huge suspension arch he built. That would be this one: (URL) this is the still existing smaller version, which will be used in our train (...) (24 years ago, 11-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) See, this is what I get for going into Comp.Eng. instead of Civil. :-) So unless I'm mistaken, (and yes it happens all too often) Arne's, (and James') and all of Ben's are all various examples of bow truss bridges. All the more reason to get (...) (24 years ago, 11-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) Thanks! :-) When the Guiness PNLTC stuff was going on with (...) Yes, I agree, but you need a foundation or a masive ballast, because the strings try to tilt the pillar. The bow bridge has the advantage to stand on two points (or lines in (...) (24 years ago, 11-Dec-00, to lugnet.trains)
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| | 48x144 (was Re: My newest creation, Hell Gate Bridge NY)
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(...) Correction - that should be 48x144 grey "brick" It's the height of a brick, but there's no holes on the bottom. SRC StRuCtures (24 years ago, 12-Dec-00, to lugnet.trains)
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| | Re: My newest creation, Hell Gate Bridge NY
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(...) You could probably make a larger truss - yes - but a suspension bridge will always be able to be made longer - and from less LEGO. The counterweight and bending tower problem is easily fixed at the same time the span length is increased. ie. (...) (24 years ago, 12-Dec-00, to lugnet.trains)
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| | My arch bridge (was Re: My newest creation, Hell Gate Bridge NY)
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(...) Unless I get a large (a few hundred) influx of beams, I'm only going to have the one arch bridge. Given that it's the only one in the world, it's more important (especially with the bridges <grin> trying to be built between LEGO trains and (...) (24 years ago, 14-Dec-00, to lugnet.trains)
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| | (off-topic) Forth Bridge Rivets
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(...) The Forth Bridges Visitors Centre Trust (a registered charity) has a limited number of encapsulated Forth Bridge rivets for sale. The rivets were removed as part of the ongoing maintenance of the structure and donated to the trust by Network (...) (20 years ago, 30-Nov-04, to lugnet.trains)
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