![](http://www.alamy.com/thumbs/6/9BF650E3-6BC0-4AAA-998C-FBFE7D042A2E/2CH5B8H.jpg)
. Railroad construction. Theory and practice . 3NZAN0 (To face page 25G) 246, RAIL-FASTENINGS, 257 Another unsettled detail is the use of shoulders^ on theupper surface. On the one hand it is claimed that the use ofshoulders relieves the spikes of side pressure from the rail andprevents necking*^ On the other hand it is claimed that if the
Size: 1445px × 1728px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorwebbwalt, bookcentury1900, bookdecade1900, bookyear1903