. The photographic history of the Civil War : in ten volumes . The parts of this rail-road crossmg overBull Run near UnionMills, were of thestandard size foundmost suitable for emer-gencies. This was for-tunate, because thebridge was destroyedseven times. A workof this character couldbe put up in a veryfew hours. Repairingthe masonry abut-ments, of course, con-sumed the greatestlength of time, but even these grew like THE BRIDGE THAT WAS DESTROYED SEVEN TIMES magic under the efforts of the construction corps. The lower photograph shows the same bridge reenforcedwith trusses. These standard siz
. The photographic history of the Civil War : in ten volumes . The parts of this rail-road crossmg overBull Run near UnionMills, were of thestandard size foundmost suitable for emer-gencies. This was for-tunate, because thebridge was destroyedseven times. A workof this character couldbe put up in a veryfew hours. Repairingthe masonry abut-ments, of course, con-sumed the greatestlength of time, but even these grew like THE BRIDGE THAT WAS DESTROYED SEVEN TIMES magic under the efforts of the construction corps. The lower photograph shows the same bridge reenforcedwith trusses. These standard size trusses and other parts of bridges were carefully made by the skilled engi-neers of the construction corps, and tested under weights greater than any they would concei\ably be calledupon to bear. These parts were kept constantly on hand so that repairs could be rushed at short REENFORCED WITH TRUSSES—TRANSFORMED INTO A STANDARD BRIDGE
Size: 1925px × 1298px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidphotographichist05inmill
