Subject:
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Re: Long Span Suspension Bridge?
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 25 Jan 2008 20:08:29 GMT
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Viewed:
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15283 times
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In lugnet.trains, Ted Michon wrote:
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In lugnet.trains, Dave Sterling wrote:
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..
Any thoughts on what I have so far? I’d really like to try one of those
cool cable-stayed bridges sometime, but I’ll need to get a closer look at
how the cables are held in place.
..
-Dave
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Dave-
If you want your truss construction to actually support the bridge, you
should convert your trapezoids into triangles (i.e., break them up by adding
verticals in the middle). (Actually, the way many of us do this still makes
trapezoids, but one of the horizontal sections is so small that it’s
effectively a triangle.) The best way to make the triangles is to use length
ratios 3:4:5 or 5:12:13 so they come out exactly in studs.
-Ted
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Ted:
Here’s V2.0 of my 92-stud bridge. I added the vertical bracing and it made a
HUGE difference in both the stability of the deck and the lateral stability of
the actual truss structure.
More Pictures
Now I just have to wait for my load-o-technic parts to arrive and I’m off to the
races. :-) One other thing. How much clearance should I have track to top of
the bridge? I was thinking 20 studs at first, but maybe I need more? I know it
fits all my rolling stock, but what if someone shows up with a bigger train and
wants to run it on my layout? Is there a “standard” bridge height most clubs
use?
Thanks,
Dave
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Message has 1 Reply:
 | | Re: Long Span Suspension Bridge?
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| (...) How much clearance should I have track to (...) At work they like to quote the statement "Standards are great. That's why we have so many of them." Standard height is whatever you and whomever you interoperate with agree on. At SCLTC, standard (...) (16 years ago, 27-Jan-08, to lugnet.trains, FTX)
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Message is in Reply To:
| | Re: Long Span Suspension Bridge?
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| (...) Dave- If you want your truss construction to actually support the bridge, you should convert your trapezoids into triangles (i.e., break them up by adding verticals in the middle). (Actually, the way many of us do this still makes trapezoids, (...) (16 years ago, 24-Jan-08, to lugnet.trains, FTX)
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