Sec. 6-Fig. 73
SEMI-TRAILERS, 20 TON, TRIPLE DECKED-FLAT CARS
Item
No. of Pcs.
Description
A
Brake wheel clearance. See Fig. 2.
B
8 ea. bottom unit. Blocks, pattern 65. Locate in front and rear of each outside pair of dual wheels. Secure each
to floor with six 30-D nails.
2 ea. top unit.
Blocks, pattern 65. Locate in front of each outside wheel. Secure each to unit below with six
30-D nails.
C
2 ea. unit.
Each to consist of two pieces of 2 in. x 4 in., length to suit. Locate between each inside pair of
dual wheels. Secure lower piece to floor with four 30-D nails and top piece to one below in
like manner.
D
2 ea. bottom unit. 4 in. x 4 in. x 18 in. Locate suitably spaced, as shown, under front end of unit. Toe-nail each to
floor with four 40-D nails.
E
2 ea. Item "D".
Blocks, pattern 66. Locate one on top of each Item "D" against end of trailer, and one against
Item "D", as shown. Secure each with four 40-D nails.
F
4 ea. unit.
Blocks, pattern 67. Locate two against ends and two against sides of front end of units, as
shown. Secure each with four 40-D nails.
G
As required.
Each to consist of one piece 1 1/2 in. x 10 in. and one piece 1 1/2 in. x 6 in., length to suit. L-
shaped, suitably nailed to each other. Locate between units, as shown, and secure each with
four 20-D nails.
H
As-required.
2 in. x 6 in., length to suit. Locate between units, as shown, and secure with four 30-D nails.
J
6
Each to consist of eight strands No. 8 gage black annealed wire. Attach three on each side to
side links of top and bottom units. Substitute, if desired, 7/8 in. dia. rods or 5/8 in. x 6 x 7
steel cable, doubled.
K
4 ea. unit.
5/8 in. x 6 x 7 steel cable, doubled. Attach at each corner of units, as shown, and pass through
stake pockets.
See General Rules 4, 5, 7, 9, 11, 14, 15 and 19-B for further details.
E-94
