There does not appear to be a topic on this interesting and important Railway Company.
I have accumulated quite a lot of information over the years and feel it would be of use if this was shared with like minded
individuals.
My own particular interest is track of which there is a lack of information especially regarding pre 1900 point(switch)
construction.
Yes. The first clerestory carriages of 1896 were built to a height of 13'3" to top of clerestory roof. This was soon reduced to 13'1" which remained the standard height until 1906, when that 1½” reduction to 12'11½” @jamie92208 mentions was introduced, remaining the standard until elliptical roofs were adopted. However, even this reduced height was too tall for the Metropolitan Widened Lines loading gauge. For this, several lots of corridor carriages 12'8" to top of clerestory were built, 47 veh