(25-09-2015, 07:46 PM)PJW Wrote:
- none of the trap points that have been included are drawn well- it should be clear in which direction they derail and the track circuit interrupter clearly attached to the running edge of the stock rail with a clear gap from the curved stock rail that should look just like a normal point does and indeed be numbered!
- Another area where "less is more" would be the marking of the Clearance Points. The problem is that the vast majority of CPs are marked in places which just would not be clear. Where tracks are spaced at a nominal 6ft (as one might well assume adjacent tracks would be unless there is any particular evidence to the contrary) then the CP for a crossover would be approximately opposite the switch tips. I'd be prepared to accept the CPs drawn at 1104 and at 1105 and perhaps 1108 as actually being feasible; the Branch is clearly a fair distance from the Down Main given the island platform 2&3 (similarly the CP for 1110 and the CP for 1101 where the depiction does indeed suggest a relatively wide separation) but all the others scream WRONG. I would not mark the obvious CPs at all; just those that are looking marginal and you want to emphasize to the examiner that you consider a particular joint to be clear- however you lose all credibility if you mark things as clear which patently are not.
Here attached is an example extract of the layout showing what I mean for the correct depiction of Clearance Points, trap points and TCI
PJW