Popular Post Ron Heggs Posted January 3, 2011 Popular Post Share Posted January 3, 2011 (edited) Index to builds Train Shed - Post #1 > Cornbrook Viaduct Bridge #1 - Post 40 > http://www.rmweb.co.uk/community/index.php?/topic/28293-manchester-central-castlefield-viaducts/?p=302385 Cornbrook Viaduct Bridge #2 - Post 61 > http://www.rmweb.co.uk/community/index.php?/topic/28293-manchester-central-castlefield-viaducts/?p=329312 Castlefield Viaduct - Post 357 > http://www.rmweb.co.uk/community/index.php?/topic/28293-manchester-central-castlefield-viaducts/?p=392832 GNR Goods Warehouse - Post 1353 > http://www.rmweb.co.uk/community/index.php?/topic/28293-manchester-central-clc-gn-warehouses-castlefield-viaducts/page-55&do=findComment&comment=1011150 GNR Deansgate Bridge - Post 1819 > http://www.rmweb.co.uk/community/index.php?/topic/28293-manchester-central-clc-gn-warehouses-castlefield-viaducts/page-73&do=findComment&comment=1267161 CLC Deansgate Bridge - Post 2024 > http://www.rmweb.co.uk/community/index.php?/topic/28293-manchester-central-clc-gn-warehouses-castlefield-viaducts/page-81&do=findComment&comment=1381053 MSJ&AR Viaduct Bridge - Post 2047 > http://www.rmweb.co.uk/community/index.php?/topic/28293-manchester-central-clc-gn-warehouses-castlefield-viaducts/page-82&do=findComment&comment=1395821 Modelling Complex Steelwork Structures in PlasticAll structural steelwork is modelled in plasticThe dimensions were obtained by reference to historical engineering drawings [The Engineer, February 13, 1880], or scaled from photographs with random survey checksEach individual structure was drawn on CAD, and checked to confirm dimensional accuracy and buildability, by producing 3D modelsThe 3D model allowed individual components to be identified and sizes extractedExamination of the 3D model also enabled a decision to be made as to the probable order of assemble of complex structuresPrints of the 2D drawings were produced to be used as templatesThe train shed structure comprises 15 bays at 140mm wide i.e. 2100mm plus 100mm for the glazing and canopies with a span of 840mmThe span structures were produced using 60th x 80th strip, curved by pulling between finger and thumb repeatedly until it had a slightly tighter radii than required. This was placed on the template held in position by veneer pins. Additional strips were fixed in place using Mek-PakThe upper and lower strips were separated by 60th x 80th strip. This completed the core structureNext the diagonal strips 20th x 100th were fixed on top of the core layer. Removing, turning over and re-placing the present layers on the template, the diagonal strips were fitted to the top face of the layers.125th Channel extrusions were curved and fixed in the same manner as the top and bottom core strips. The bottom of the top channel was at the same level as the bottom of the top core strip, and top of the bottom channel being fixed at the level of the top of the bottom core stripThe side, underside and top of the span sections below the lowest diagonal strips were clad internally with 20th plastic cardThis completed one span structure. Seventeen of these were requiredThe front and rear gable ends both required two span structures fitted with horizontal and vertical trussing, again using templatesThese were then separated by spacers at the A - G levels, and spacers and braces at D & G levels, and also at the transom level on the rear gableFront and Rear gable trussing detail - The trial build did not use a template, so some truss members were a bit skewBracing detail and cantilevered walkway supports - The trial build did not use a template, so some truss members were a bit skewOriginal trial assembly - Front gable with high level glazing steelworkOriginal trial assembly - Internal view of Front gableRear gable and transom assemblyRear gable showing spacers and bracingRear gable glazing bars structureThe gable glazing was a separate structure produced by overlaying a template. The glazed canopies on the front gable were produced in a similar fashion using 20th microstripThe structures were spray painted before fixing the glazing sheet to the glazing bars structures, then fixing this to the gable structureThe transverse beam structures 137mm long, were made in a similar fashion using the relevant template. There are 17 transverse beams in each of the 15 bays. The two gable end bays being shorter by the width of the gable end structuresOriginal trial assembly - Overlaying the transverse beams in each bay are 4 I-beams 125th deep curved and spaced at 28mm centresOriginal trial assembly - The front gable has a high level glazed canopy with a timber on steel frame down to the timbered booking & waiting rooms and glazed covered walkwayOriginal trial assembly - used to develop material usage and assembly methods Edited May 28, 2015 by Ron Heggs 67 1 Link to post Share on other sites More sharing options...
Fairburn Posted January 3, 2011 Share Posted January 3, 2011 Absolutely, bloomin', fantastic. That is one beauty of a structure. Ian 1 Link to post Share on other sites More sharing options...
sixteen 12by 10s Posted January 3, 2011 Share Posted January 3, 2011 wow thanks for sharing it with us Gary 1 Link to post Share on other sites More sharing options...
RMweb Gold A Murphy Posted January 3, 2011 RMweb Gold Share Posted January 3, 2011 I knew Manchester Central well in the early '60s, my friend Jonathan Whalley and I "drove" one of the station pilots one day. That is staggering modelling sir, I cannot wait to see more! 1 Link to post Share on other sites More sharing options...
Ron Heggs Posted January 3, 2011 Author Share Posted January 3, 2011 Further work on the station structure has been suspended since last January when I moved to Spain. Until the Railway Room is completed I am not able to build the baseboard to support the complete station Work continues on the Station Walls internal/external faces and buttresses. Building of the Castlefield viaducts also continues with additional structural detail being added. Some of the under bridge support steelwork is being modified to match new photograghic details A number buildings adjacent to station and the approaches are still in boxes, and must wait for future exposure and photographs Will continue to add images to the gallery and the main topic 1 Link to post Share on other sites More sharing options...
Mucky Duck Posted January 3, 2011 Share Posted January 3, 2011 Awe-inspiring! And CAD looks a very useful modelling tool indeed! This magnificent structure alone is worth a whole Model Railway Journal feature. Are you modelling a specific period? Link to post Share on other sites More sharing options...
Ron Heggs Posted January 3, 2011 Author Share Posted January 3, 2011 Awe-inspiring! And CAD looks a very useful modelling tool indeed! This magnificent structure alone is worth a whole Model Railway Journal feature. Are you modelling a specific period? The general period is 1953 thro' 1965 The original station roof cladding/glazing was replaced in 1952 Station approach trackwork was remodelled and re-signalled in 1958 I do have a few locos outside that time frame, such as LMS 10000, LMS Black 5, Prototype Deltic, etc. I hope to add a Midland Pullman to the collection when Bachmann delivers late this year 2 Link to post Share on other sites More sharing options...
Horsetan Posted January 3, 2011 Share Posted January 3, 2011 Absolutely, bloomin', fantastic. That is one beauty of a structure. I would add the word "epic" B) Link to post Share on other sites More sharing options...
10800 Posted January 3, 2011 Share Posted January 3, 2011 That is simply awesome Ron - thanks for expanding on your gallery photos, I look forward to more in due course. Link to post Share on other sites More sharing options...
D9JEF Posted January 3, 2011 Share Posted January 3, 2011 Fabulous modelling and many thanks for sharing. How long do you think this has taken so far? Regards Jeff Link to post Share on other sites More sharing options...
BernardTPM Posted January 3, 2011 Share Posted January 3, 2011 Beautiful work! Mmmm Link to post Share on other sites More sharing options...
Dave47549 Posted January 4, 2011 Share Posted January 4, 2011 (edited) . Edited September 29, 2021 by Dave47549 Link to post Share on other sites More sharing options...
RMweb Premium Kris Posted January 4, 2011 RMweb Premium Share Posted January 4, 2011 That is very very impressive. How robust is the structure? Link to post Share on other sites More sharing options...
HerbertHopkins Posted January 4, 2011 Share Posted January 4, 2011 What a fantastic piece of modelling! I look forward to seeing further updates as work commences - well done. Link to post Share on other sites More sharing options...
artizen Posted January 4, 2011 Share Posted January 4, 2011 This deserves a spot on Buntbahn.de or finescalerr.com Amazing stuff. And here I am trying to design a "large" span across two tracks that I want to look like a recycled greenhouse with a railway through it. Please keep posting - layouts like this deserve a very wide and very appreciative audience. Link to post Share on other sites More sharing options...
grahame Posted January 4, 2011 Share Posted January 4, 2011 Wow, fantastic, I'm speachless................. G. Link to post Share on other sites More sharing options...
Richard_S Posted January 4, 2011 Share Posted January 4, 2011 The station was closed long before it had entered my consciousness, though I am familiar with the structure as a concert venue. Looking at your internal views makes me think of seeing Paul Simon and Chris Rea live. An amazing accomplishment. Link to post Share on other sites More sharing options...
richard_t Posted January 4, 2011 Share Posted January 4, 2011 Modelling Complex Steelwork Structures in Plastic The dimensions were obtained by reference to historical engineering drawings [The Engineer, February 13, 1880], or scaled from photographs with random survey checks I can only add to the other comments of absolutely fantastic work! Do you know where I might be able to get hold of the The Engineer (February and March 1880)? I've got them on "to find list" - I was hoping for an online archive, but if it exists I can't find it. Cheers, and keep up the good work. Link to post Share on other sites More sharing options...
Guest jim s-w Posted January 4, 2011 Share Posted January 4, 2011 Good stuff Ron How long is the station itself? As the roof is 6ft + long is a section to be removable to get to derailments etc? Cheers Jim Link to post Share on other sites More sharing options...
Peter Bedding Posted January 4, 2011 Share Posted January 4, 2011 Truly awe-inspiring. Where next, one wonders. Meldon viaduct? Too easy. PB Link to post Share on other sites More sharing options...
David Bigcheeseplant Posted January 4, 2011 Share Posted January 4, 2011 I am disapointed you have not added the rivets yet! David 1 Link to post Share on other sites More sharing options...
sixteen 12by 10s Posted January 4, 2011 Share Posted January 4, 2011 Is there now a world Plastruct shortage? Gary 1 Link to post Share on other sites More sharing options...
Jason Fisher Posted January 4, 2011 Share Posted January 4, 2011 That is a work of art, absolutely stunning Link to post Share on other sites More sharing options...
iak Posted January 4, 2011 Share Posted January 4, 2011 Yowser!!! Stunning stuff sir! And what period is this to be? To see a few D9's trundling under this roof will be positively wonderful B) Link to post Share on other sites More sharing options...
RMweb Gold beast66606 Posted January 4, 2011 RMweb Gold Share Posted January 4, 2011 And what period is this to be? A clue only a few posts above. The general period is 1953 thro' 1965 Echoing what others have said, awesome stuff Ron Link to post Share on other sites More sharing options...
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