05-29-2010, 11:25 AM
I did this in full size, and then scaled it to 1:87 ( 0.0114942 times full size ) I then scaled the 1:87 drawing up 1.85 times to a 50' bridge in HO. The only problem with up-scaling a CAD drawing, is that every thing gets enlarged, including the plank thickness, etc. I will now have to go in and make several changes to bring things back to scale.
I printed out the initial scale drawing ( above ) and took it down to the modules. I think I am going to like this one. Three spans at 50' each will work beautifully!
Unless the boathouse finishes quickly enough, this bridge build will not be part of the "summer challenge". That will depend on how fast I can shingle.
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I got the details rescaled, so this is what the drawing now looks like. With this printed out, I can start making up assembly jigs.....yeah, this project is going to need them. The most obious changes are the thickness of the wood deck, and the height of the deck support "I" beams. On my computer screen at least, the drawing measures 50 ' with an HO scale rule, so is "full size".
We always learn far more from our own mistakes, than we will ever learn from another's advice.
The greatest place to live life, is on the sharp leading edge of a learning curve.
Lead me not into temptation.....I can find it myself!
The greatest place to live life, is on the sharp leading edge of a learning curve.
Lead me not into temptation.....I can find it myself!