All the same concepts seem to apply.
We pulled out an end dogging carriage that had a top rail and a bottom rail and replaced it with an end dogging carriage that had two top rails and no bottom rail. The top rails were supported in the upper part of four "A" frame cement pillars that stood on the second floor and reached the fifth floor. The office over looking the mill floor was attached to the two middle "A" frames and swayed with the movements of the carriage.
Cables brake when used day in and day out and a runaway carriage with a 200hp DC motor driving it would spill your coffee
even with a pair of shocks mounted on each end of the rail and if you were lucky the slack cable would lay down between two block chippers and the four vertical bandmills (two opposing each other) with out hitting a chipper or a saw, If you were lucky!!!
The new rails sat on I beams laid on their side, the tracks had adjuster screws every few inches and they were painstakingly aligned with a laser, once it was all aligned the I beam's was filled up to the bottom of the rails with a cement based setting compound that held everything solid.
All of the chippers and bandmills moved in and out at the computers whim and were mounted on one flat way and one inverted "V" way. They used a "shoe" at each corner (air pressure on plastic pucks)(shear point) to hold then on the ways. Fastest way to have to reset a chipper and change shoes was to overfeed a big block thru the block chippers.
Real good info keep it coming.