A background scanned track plan

This is part of a track plan scanned from a magazine. It illustrates the need to be careful when such plans and hand-drawn sketches are enlarged to full construction size. In order to keep the minimum radius within 750mm / 30" for EM (even that is very tight of course), this curved turnout cannot be shorter than a B-8.

Which means that the toe is somewhat further round the transition curve than the designer envisaged (indicated by the position of the signal), and it is going to be a tight squeeze to fit in the double-slip within this radius constraint.

Notice also that where the inner track has been added (tools > make double-track TS menu item), it has shown up a discrepancy in the drawn centre-line spacing.

track plan courtesy Iain Rice ©

More about Templot.

More about using background picture shapes in Templot.