I’d rather it got done than money was spent on designing ‘pretty’ OHLE. There isn’t the money to make it look good’s and even if there was imo it shouldn’t be wasted here.
Presumably the advantages for inspection, maintenance, and repair of having one design for the entire area was judged to be worth it.
A big drawback with lattice designs is the increased likelihood of finding a poor-quality weld.
Reactangular grids have shorter weld lengths. Are there any instances of lattices falling apart? Why are they still used?
No instances of collapse AFAIK, but I believe they probably aren't considered for coastal environments due to the corrosion risk from salt water.
The design uses UKMS100 with F+F SICs and RESICs. Some steelwork and foundations are from Series 1.
Commonality with the equipment presently used on the GWML.
Series 2 is not a OLE Basic Design Range which is approved for new electrification schemes - UKMS is.
It's a very efficient and elegant design that maximises standardisation and constructability. No one will be in a hurry to use welded angle masts and booms.
harboroughfm.co.uk
Nothing wrong with the above - there are at least some solid steel sections there. It's more the Mk1 welded 4-angle TTC & portal sections that suffer, along with (and to a lesser extent) the Mk3 4-angle TTCs and portals.Work To Electrify Railway Makes Rapid Progress
Work to electrify the railway to Market Harborough is progressing at pace. Over 100 masts, which will support the overhead cables, have already been installed at the side of tracks, including on th…
Curious to know what's wrong with the above images. Sorry to labour the point.
WAO
The Tensorex drums contain a flat coil spring. The best explanation of what goes on internally is probably by watching a manufacturer’s video. One of the major advantages is that the two units, one for the catenary and one for the contact wire, can usually be mounted vertically above the track. So there’s no need for the wire runs to head off at an angle to a weight system mounted away from the track, this also has a greater benefit on four track sections:
Superb link. Greatly appreciated.
And you end up with fewer wire runs overall because the "used" section of each run is longer.
Which is great until you need to replace the contact wire and the wire run extends over a junction
Possibly because they were the GWR's connection to the Poplar area (London Docks) via the North London Railway?
Poplar was the first properly railway-connected London Dock. It was also owned by the North London Railway, which had started out as a ‘railway and dock’ company. It isn’t appropriate to go into all the historical ownership and re-naming issues on a modern electrification thread.
GWR had a depot in poplar, it was alongside a now filled in dock under Trafalgar Way on (new) Billingsgate market side (there is still one old square brick building there, which marks the area). The spur of water from Dock now know as Poplar dock marina towards Boardwalk Place was the entrance to the dock served by GWR
I passed there the other day when I was going to Richmond - it looked like it was really making progress but still quite a bit left to do.
As far as I could make out from a recent AIVR video, most/all the structures seem to be in, but the wiring has yet to commence.
I will be travelling past the Poplars Lines on this coming Friday, I am really busy for the rest of Friday and also all day Saturday, so I will post an update this coming Sunday.