45059 Posted November 19, 2015 Share Posted November 19, 2015 Some fantastic efforts here, countless hours spent no doubt, creating some wonderful structures. Well done all. However. Confession time. It would seem that my former occupation still haunts me- every time I see a bridge, the first thing I do is to work out how to blow it up!! I thought my days of 'double ring mains' and 'destroying abutments ' were long gone- alas it appears not. My wife suggests that I may have PTSD from the Gulf. Post Traumatic Structure Destruction. (Ps. unfortunately, twelve years on, I'm only half joking.) Link to post Share on other sites More sharing options...
RMweb Premium jamie92208 Posted November 19, 2015 RMweb Premium Share Posted November 19, 2015 Some fantastic efforts here, countless hours spent no doubt, creating some wonderful structures. Well done all. However. Confession time. It would seem that my former occupation still haunts me- every time I see a bridge, the first thing I do is to work out how to blow it up!! I thought my days of 'double ring mains' and 'destroying abutments ' were long gone- alas it appears not. My wife suggests that I may have PTSD from the Gulf. Post Traumatic Structure Destruction. (Ps. unfortunately, twelve years on, I'm only half joking.) I have a related thing about bridges. When I was researching my first large layout, Long Preston, I discovered that all the bridges were built with semi elliptical arches and as it was many years after my Maths A level I had to search hard to rediscover the formula for platting an ellipse. I embarrassed my then 12 year old daughter at her parents evening by asking her maths teacher for help. Now I can't look at an arched bridge without working out what mathematical shape it is. I think that in the intervening 19 years my daughter has forgiven me though. She now realises that it's a parents job to embarrass their offspring. Jamie Link to post Share on other sites More sharing options...
peter220950 Posted November 19, 2015 Share Posted November 19, 2015 Now I can't look at an arched bridge without working out what mathematical shape it is. Jamie Likewise, We had all sorts of similar geometric shennanigans when we built the arched viaduct on the Club layout Kimble. It seemed straightforward at first, a simple half round arch, but because the bridge is curved we either had to maintain the shape on both sides and widen the pillars, which would look wrong, or effectively widen the arch on the outside but retain the same height above the springing point.,It caused a few hours of head scratching. Having finally worked it out we clad the bridge with resin cast panels, string and arch details Sprayed it Halfords grey primer and had a pair of the group lose their minds painting the stone blocks individually With the result below The brickwork under the arches also caused some issues as it's trapezoidal in shape, and we didn't make it any easier by putting a board joint in the middle! Peter Link to post Share on other sites More sharing options...
RMweb Premium jamie92208 Posted November 19, 2015 RMweb Premium Share Posted November 19, 2015 Likewise, We had all sorts of similar geometric shennanigans when we built the arched viaduct on the Club layout Kimble. It seemed straightforward at first, a simple half round arch, but because the bridge is curved we either had to maintain the shape on both sides and widen the pillars, which would look wrong, or effectively widen the arch on the outside but retain the same height above the springing point.,It caused a few hours of head scratching. JPEG Image (1877688).jpg Having finally worked it out we clad the bridge with resin cast panels, string and arch details JPEG Image (1493454).jpg Sprayed it Halfords grey primer JPEG Image (1493900).jpg and had a pair of the group lose their minds painting the stone blocks individually Big Dave and Alan.jpg With the result below DSCF2241.JPG DSCF2242.JPG DSCF2243.JPGDSCF2246.JPG The brickwork under the arches also caused some issues as it's trapezoidal in shape, and we didn't make it any easier by putting a board joint in the middle! Peter That's brilliant Peter. I had similar problems on a curved viaduct on Green Ayre that also rises at 1 in 70. Many hourson the CAD system produced the two sets of arch profiles, the piers are wedge shaped and even the girder bridge at the end is still on the curve and has had to have two different lengths of brass platework put on it. I'll try and dig a photo out at some point. Edited to add a couple of photos. Jamie Link to post Share on other sites More sharing options...
Guest bri.s Posted November 19, 2015 Share Posted November 19, 2015 Here's a bridge deck final one out if 3 I needed for cudworth ,it just needs installing on the layout It's the oldest of the 3 I've done so needed to look well worn Thanks Brian Link to post Share on other sites More sharing options...
class"66" Posted November 20, 2015 Author Share Posted November 20, 2015 More super modelling chaps cheers neil. Link to post Share on other sites More sharing options...
RMweb Premium Trainshed Terry Posted December 28, 2015 RMweb Premium Share Posted December 28, 2015 I'm not sure if this is going to be the right place to ask this question, if it is not feel free to post to the right section mods. I am currently working on a bridge project and I can not find the answer to anywhere on the interweb. Q1:What is the width of the foot path on a road over rail bridge. Q2:what is the road width for an 'A' two lane road with a pedestraian crossing on. What the project is for the bridge to have the station builing on and access to the plateforms by means step to the island plateforms, you could say along the line of the station at "Witham in Essex" but with a road. But it is to of Southern Region in design. The station is in a brick lined cutting and the station is has 2 island plateforms containing 4 faces. Ihope you can understand what I am asking for as the lap top is in a happy mode at the moment so I have had to type tis on my taplet. So that if there are any spelling mistakes as the key board I'm using will not function. Thank you your advise. Link to post Share on other sites More sharing options...
allan downes Posted December 28, 2015 Share Posted December 28, 2015 As a rule footpath about 3ft wide and two lanes at about 10 ft wide each. Cheers. Allan Link to post Share on other sites More sharing options...
gismorail Posted December 30, 2015 Share Posted December 30, 2015 Some very fine structures to behold fellow modellers I have recently finished building a new railway shed and have after several years been able to finally set up the layout again. Thought my first attempt at scratch building a foot bridge might be of interest to this thread. The layout is based on the Loco depot at Chester Northgate and the footbridge and surrounding brewery buildings in the following photo's are modellers licence to make a scenic break into the fiddle yard area. The bridge is very loosely based on the footbridge that used to cross the west end of Chester General station . As the footbridge is overlooking the coaling hoist and water tower I imagine that it will be a favourite haunt for spotters. The structure is constructed in plastic card and the bridge sides are from the Hornby viaduct series to which I have fixed wire mesh to give it a more convincing appearance. Link to post Share on other sites More sharing options...
class"66" Posted December 31, 2015 Author Share Posted December 31, 2015 Very nice footbridge here Link to post Share on other sites More sharing options...
Gravy Train Posted January 17, 2016 Share Posted January 17, 2016 Nelson Bridge, Carlisle 4mm Link to post Share on other sites More sharing options...
Gravy Train Posted January 17, 2016 Share Posted January 17, 2016 Freelance Viaduct Diorama 4mm Link to post Share on other sites More sharing options...
class"66" Posted January 21, 2016 Author Share Posted January 21, 2016 Looks very nice built viaduct here Link to post Share on other sites More sharing options...
Windhawk Posted January 28, 2016 Share Posted January 28, 2016 Here's the only two pictures I can find of my Grandad's old layout, before we dismantled it when they moved house. The station on the left side was supposed to represent Port Carlisle, and the station on the other was called Beckfoot. I remember being shown some drawings of the bridge about five years ago, but I don't know if it was based on a real bridge somewhere. It was the only section that was kept intact, and hopefully there'll be a new layout for it to go into. I think it was mostly constructed of plasticard strips, with stone banks being layered with clay. Link to post Share on other sites More sharing options...
drmditch Posted February 9, 2016 Share Posted February 9, 2016 I have a viaduct to build where my new layout crosses the double glazed garden doors. These face south so there will be a lot of sunlight impacting on the structure. I plan to produce a single line version of the Deerness (or Dearness - the railway was always ambiguous) Viaduct on the ECML. Apparently it is now also known as the Langley Moor Viaduct (Note - not the now destroyed brick built Deerness Viaduct on the Durham - Bishop Aukland line or it's timber built predecessor or either of the long lasting timber bridges over the same river on the Dearness Valley line!) The ECML bridge, which has recently been re-painted a fetching shade of green, has complex lattice girders on a series of brick piers. An interesting account of it's re-furbishment is here - http://issuu.com/railmedia/docs/tre-june-14/62 , and I am very glad to find that the Deerness is now classed as a salmon run! The model will have a plywood trackbed and piers. I plan to build the girders out of card, painted and matt-varnished (using UV stable products). I worry that brass would expand and contract too much, and plastic may distort and eventually decay. Does anybody have experience of a similar situation? I would be grateful for advice. (I do have pictures of a similar but shorter structure on my old railway, but would be embarrassed to post them here in view of the splendid modelling seen above!) Link to post Share on other sites More sharing options...
Ron Heggs Posted February 9, 2016 Share Posted February 9, 2016 I have a viaduct to build where my new layout crosses the double glazed garden doors. These face south so there will be a lot of sunlight impacting on the structure. I plan to produce a single line version of the Deerness (or Dearness - the railway was always ambiguous) Viaduct on the ECML. Apparently it is now also known as the Langley Moor Viaduct (Note - not the now destroyed brick built Deerness Viaduct on the Durham - Bishop Aukland line or it's timber built predecessor or either of the long lasting timber bridges over the same river on the Dearness Valley line!) The ECML bridge, which has recently been re-painted a fetching shade of green, has complex lattice girders on a series of brick piers. An interesting account of it's re-furbishment is here - http://issuu.com/railmedia/docs/tre-june-14/62 , and I am very glad to find that the Deerness is now classed as a salmon run! The model will have a plywood trackbed and piers. I plan to build the girders out of card, painted and matt-varnished (using UV stable products). I worry that brass would expand and contract too much, and plastic may distort and eventually decay. Does anybody have experience of a similar situation? I would be grateful for advice. (I do have pictures of a similar but shorter structure on my old railway, but would be embarrassed to post them here in view of the splendid modelling seen above!) Agree that styrene is non-starter in high UV situations. Luckily the majority of my layout bridges and viaducts are in the villa's underbuild - no daylight present. Where the track eventually will go outside around the garden, the first 2 metres will be a continuation of a 4.5m long viaduct. In my case this will be built in brass due to the occasional storm conditions which show themselves about 3-4 times a year, and which last 2-3 days Your suggestion of a card built viaduct is a good one, and is likely to be just as strong as one built in styrene, and unlikely to suffer from UV attack I wish you well with your build, and look forward to seeing its construction Cheers Ron Link to post Share on other sites More sharing options...
ben pez Posted February 16, 2016 Share Posted February 16, 2016 Another scratch built bridge on my layout of ais gill summit. Was known as "hangmans bridge" before it was demolished Cheers Link to post Share on other sites More sharing options...
class"66" Posted February 18, 2016 Author Share Posted February 18, 2016 Looks very nice Ben.. Link to post Share on other sites More sharing options...
trains12 Posted April 8, 2016 Share Posted April 8, 2016 hi all Below is what was going to be the next venture in both moddeling and a small 12ft layout. It is based upon the old Severn rail bridge which was pulled down in the mid 1960's after it was hit by two ships in fog.. This part is the swing bridge part that went over the canal . There was going to be two or three of the main spans also done but alas at present with the problems of my trapped nervrs in my back I cannot now control the shaking of my hands so for the time being it looks as if my modelling days are at a stand still.. There are a few more shots that I have taken of the control cabin that sits upon this span so I will try and get them uploaded in the next few days. Peter Link to post Share on other sites More sharing options...
allan downes Posted April 8, 2016 Share Posted April 8, 2016 If you can build something as wonderful as that with shaky hands, what brilliance could you produce with steady one's ?! Absolutely amazing . Cheers. Allan Link to post Share on other sites More sharing options...
RMweb Gold Phil Bullock Posted April 8, 2016 RMweb Gold Share Posted April 8, 2016 Great modelling there! Its a fascinating story - some further info here http://www.friendsofpurton.org.uk/Purtonsevernrailbridge.html One of the unfortunate casualties was an Alex Bullock - coincidental, no relation. Phil Link to post Share on other sites More sharing options...
RMweb Gold Phil Bullock Posted April 8, 2016 RMweb Gold Share Posted April 8, 2016 And Abbotswood has two bridges... The road bridge at the southern end, Wills sheet over plywood The Oxford line bridge over the Birmingham line - rather crude, brick paper over soft wood, but as at back of layout not so close to viewers... Built this to fit and then discovered that the Hornby turntable handrails were a perfect fit and a pretty goo representation of the real thing... Phots are Trevor Jones's excellent work Phil Link to post Share on other sites More sharing options...
class"66" Posted April 10, 2016 Author Share Posted April 10, 2016 Nice pictures Phill Link to post Share on other sites More sharing options...
trains12 Posted April 11, 2016 Share Posted April 11, 2016 Hi all Here's the shots of the control cabin as promised. Tried over the weekend to do some modelling hands getting worse can't even hold a knife properly. Going to start and rummage through all my stuff and get rid of a lot so may be some bargains. Peter Link to post Share on other sites More sharing options...
allan downes Posted April 11, 2016 Share Posted April 11, 2016 Shaky hands or not Peter, you're doing a bloody marvellous job and you're a credit to us all. Keep up the good work mate. Cheers. Allan. Link to post Share on other sites More sharing options...
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