. Electric railway review . the conwall- the] can be bull! on the surface i the ground,In a wooden mold, using liuht wire mesh ii reinforcementThis win permit the use oi very Ughl concrete walliRlbly 6 Inches for conduit, which OOUld be as- sembled m shown in Figure 246-(11-8). Two patterns onlyequlred foi the mold and all the concrete blocks can bemade and for use when the trench is opened Bj method f construction the trench would be open onljorl time and man] of the difficulties occurring fromIng-in would be avoided Inother advantage of this form f conduit would be that the blocks could be l
. Electric railway review . the conwall- the] can be bull! on the surface i the ground,In a wooden mold, using liuht wire mesh ii reinforcementThis win permit the use oi very Ughl concrete walliRlbly 6 Inches for conduit, which OOUld be as- sembled m shown in Figure 246-(11-8). Two patterns onlyequlred foi the mold and all the concrete blocks can bemade and for use when the trench is opened Bj method f construction the trench would be open onljorl time and man] of the difficulties occurring fromIng-in would be avoided Inother advantage of this form f conduit would be that the blocks could be laid in water with-out injuring the concrete. The loops shown at a should beof heavy wire or rods built into the blocks to facilitate hand-ling them with a crane. Tongue and grooved joints shouldbe used in this construction. The lifting eyes. a. in the bot-tom slabs may be cut off after they are in place or recessedbelow the surface. With this construction only a smallamount of labor would be required for assembling, as the.
Size: 1693px × 1476px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
