|The Concept ..|
– or – “The Reason behind the Madness” – more or less …
A modern gantry crane would not require that center rail – it would extend the entire width of the pier. By modern I mean something later then mine!
The DRRR as I model it, exists in my Alternate Reality about 1940. I figure the infrastructure is probably dated about 20 years earlier – 1920’ish .. which in turn since it was back-county narrow-gauge based on turn-of-the-century .. or practices in 1900.
Instead of steel beams they used wood. That then required that center rail. Now .. will my 1940’ish construction keep that wooden gantry crane? Shrug. Got no idea right now. It may have been replaced with a ‘modern’ steel gantry crane. If so .. that middle crane rail will be rusted up .. indicating it’s not used any more. I kind of like that idea.