Timbering a double junction.

[RBAGE]

I'm about to start building a double junction and was hoping to get some clarification on the method of timbering used during the British Railways 1950 - 60's period.

 

There are a couple of areas of detail that I am hoping to confirm:

 1. Area there areas within the junction where the timbering would extend to the full width of the double track or would the timbers be interlaced, where necessary, throughout?

 2. Would the timbering at the diamond be at angles to both tracks or would the timbering be at 90 degrees to the main running lines?

 

Thanks,

 

Bob

[martin_wynne]

I'm about to start building a double junction and was hoping to get some clarification on the method of timbering used during the British Railways 1950 - 60's period.

 

There are a couple of areas of detail that I am hoping to confirm:

 1. Area there areas within the junction where the timbering would extend to the full width of the double track or would the timbers be interlaced, where necessary, throughout?

 2. Would the timbering at the diamond be at angles to both tracks or would the timbering be at 90 degrees to the main running lines?

 

Hi Bob,

 

Double-junctions vary a lot and are usually custom-designed to suit the site and traffic.

 

In general:

 

Diamond-crossings almost always have equalized (skewed) timbering. Very often in a double-junction the timbering of the turnouts is similarly skewed to match the diamond. This makes it easier to arrange the rail joints.

 

There would usually be long timbers across both roads, extending in area probably from the wing-rail front on the turnout V-crossings to the wing-rail front on the first V-crossing of the diamond.

 

The turnouts are staggered to maintain 6ft way in the diverging route, and to help with the rodding runs.

 

Double-junctions tend to have irregular diamond-crossings, with the diverging road curved and the main road straight or straighter.

 

If you ask on the Templot Club forum we can discuss it in greater detail. It is quite easy in Templot to create double-junctions having irregular diamonds, here is a video showing the process (silent):

 

 https://flashbackconnect.com/Movie.aspx?id=z3LZpZ1HyGx4Mzpft5UXUA2

 

See also this topic: http://85a.co.uk/forum/view_topic.php?id=2617&forum_id=22

 

Martin.