Sec. 6-Fig. 201 (New-10-1966)
SEMI-TRAILERS, 20-TON, TRIPLE DECKED-FLAT CARS WITH RETRACTABLE HITCHES
Item No. of Pcs.
Brake wheel clearance. See Fig. 2, Sec. 1.
4 per ea. triple
Block, pattern 87. Locate one in front of each outside wheel of the second and top units.
Secure each block to unit below with three 40-D nails in the heel of block and two 20-D nails
toe-nailed on each side of the block.
8 per ea. triple
Block, pattern 67. Locate two against ends and two against sides of front ends of unit as
shown in Sketches 1 and 2. Secure each block with three 40-D nails in the heel of block and
two 20-D nails toe-nailed on each side of block.
2 in. x 6 in. x length to suit. Locate between bottom and second unit as shown and between
second and top unit, as shown. Secure each to prevent dislodgment.
10 ea. triple
Each to consist of eight strands, No. 8 gage black annealed wire. Attach three to each side
of trailers utilizing side links of top and bottom units as shown and attach two to each side of
the trailers utilizing side links of the middle and bottom units as shown. Twist all wire taut.
Substitute, if desired, 5/8 in. dia. steel rods length to suit with washers and nuts on threaded
ends or 3/8 in. steel cable, 6 x 19 independent wire rope core in a complete loop and secured
with three 3/8 in. cable clips.
Each to consist of one piece 1 2 in. x 10 in. and one piece 1 ½ in. x 6 in. length to suit. L-
shaped, 10 in. piece properly nailed to 6 in. piece. Locate between units as shown and
secure each with four 20-D nails.
See General Rules 4, 5, 9, 14, 15 and 19B for further details.