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aussietmrail

Modelling a cable stay double deck bridge

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Last update 15th of February, the new bridge is coming along, is now in one full piece, but still needs a lot of work to get stop from sagging  not in the middle at the ends the side beam is not in full piece , 3 foot 6 inches short, once I screw on the end section for the arch will be 5 foot in length  when cut , that happen Wednesday, the main span still is 14 feet .

Is going to look stunning when built, be the main feature of the layout, will build the   road deck later . the first two pics of the arch , third pic of the scene I plan to model and pulling of the same scene when the first train runs on the layout , bridge be different  and higher water clearance of 2 feet .

Forth pic I had to clamp a piece of pine to level the centre join  of the bridge , the  last two pics of the bridge standing up on it's own with out clamps , I had to clamp on two 6 foot lengths  of ply to strengthen the bridge sides worked out well, will be better when the other sides go on.  The bridge is stored in the garage and I will screw the other sides on in the garage, need a level floor .

This bridge has being going on for some time with lots of changes, that happens,  with the move a new layout and new bridge, once the bridge is finished will start construction on the layout .

Yest I do have those two locos , they are NR class , running numbers 109 and 74, don't have the Ghan passenger cars will use the Indian Pacific cars no one will know.

Tony from nice down under 

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It's starting to look good, Tony.  Glad to know you are getting on with the bridge.  I like the way those low side walls are at a slight inward angle - very neat.  Sounds like you have the weather on your side at present.  Keep up the good work.

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Hi Andrew, many thanks yeah I made the side beams like that so I didn't need to file if the the sides were square, hope doing them that way will make the bridge stronger once the arch is screwed in place, I am not hurrying it don't want to stuff up now being so close to finishing the bridge be a stunning site indeed and my main feature of the layout.

Yes weather  is great, can't do much to the due on the grass  dry's, cold nights , 21 degrees tomorrow , not much higher for the rest of the week.

Are you and family ok  out of arms reach of this virus, we are ok 

Take care Tony.

 

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The latest pics are out  on the latest update construction on the new bridge, I finely finished screwing the last of the double side beam in place and had time to to see how the first arch half fitted like, wow, just mind blowing, I took off the lower side clamps and the arch stayed in place, the top clamp holding the arch. The middle jig is to support the arch while I screw the arch hangers in place, they will take the most of the load , arch 1 inch and a half wide and joined in the middle with a second skin like the side beam, the second pic showing side on looking down the bridge , the last pic I be modelling the boat  ramp and having a boat in the middle of the river with a film crew  watching the big event of the first train over the bridge and be those two locos I have.

My big day tomorrow, birthday lunch  with my mum wife and sister,  I am finely retired on an old age pension, more work on the layout.

 

Enjoy Tony.

 

 

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The bridge has come a long way and finely after all my hard work has paid off  ,on a very big high,  that ply jig in the middle wont be there once the arch  hangers are in place, will be modifying the piers  so the water line clearance be 2 feet in stead of 19 inches .

Be while before I get back to the bridge, be starting work on nailing down the track on the five modules, making a start on the new layout track plan .

Tony from  wet down under keeping on moving ahead.

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