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Page Title: Table 7-2. Application of Materials for Blocking and Tiedown of M1015 Carrier on CONUS General-Purpose Flatcars (Figs 7-1 and...
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TM 55-5811-900-14
Table 7-1. Bill of Materials for Blocking and Tiedown of M1015 Carrier on CONUS General-Purpose
Flatcars (Figs 7-1 and 7-2).- Continued
Item
Description
Approximate
Quantity
Shackles ....................
Anchor shackles, screw-pin, type IV, class 1: Fed Spec RR-C-271: in.-dia. 7/8- in. (1-
4.
pin), NSN 4030-00-162-9668.
Wire rope ...................
6 X 19 IWRC, improved plow steel, preformed, regular-lay; table X, Fed Spec  RR-W-
187 ft.
410: 5/8-in
Table 7-2. Application of Materials for Blocking and Tiedown of M1015 Carrier on CONUS
General-Purpose Flatcars (Figs 7-1 and 7-2).
Item
No. Reqd.
Application
A
--
Brake wheel clearance. Minimum clearance required is 6 inches above, in back of, and on
both sides of the wheel and 4 inches underneath the wheel (fig 7-1).
B
2
Blocks (detail 1, fig 7-4). Each to consist of six pieces of 2 x 12 x 28-inch lumber, cut as
shown in detail 1. Nail the two inside pieces together with three 12d nails, on each side.
Nail the two outside pieces to the inside pieces with four 12d nails, on each side. Locate
one block against the front of each track as shown in figure 7-1. Toenail the heel of each
block on the two inside pieces to the car floor with two 30d nails. Toenail each side of the
block to the car floor with two 40d nails.
C
2
Blocks (detail 2, fig 7-4). Each to consist of six pieces of 2 x 6x 23-inch lumber, cut as shown
in detail 2. Construct and apply (to rear tracks) in the same manner as item B, above.
D
8
Side cleats. Each to consist of one piece of 2 x 4 x 24-inch lumber. Locate one piece on each
of items B and C (flush with heel of block), and nail it to the car floor with four 20d nails.
E
4
End cleats. Each to consist of two pieces of 2 x 6 x 14-inch lumber. Center the bottom pieces
crosswise against the heel of items B and C, and nail them to the car floor with four 30d
nails. Nail the top pieces to the bottom pieces with four 30d nails.
F
2
Side blocks. Each to consist of two pieces of 2 x 4 x 108-inch lumber. Locate the bottom
pieces longitudinally against the outside of each track, and nail them to the car floor with
30d nails spaced about 8 inches apart. Nail the top pieces to the bottom pieces in like
manner.
G
4
Shackles. Attach one to each front and rear towing provision.
H
4
Wire rope. Each to consist of one piece of 5/8-inch wire rope, length as required (about 15 ft).
Form a complete loop between each shackle and appropriate flatcar stake pocket. (Wire-
rope ends should overlap a minimum of 24 inches. The angle of tiedown must not be
greater than 45)
.
J
24
Clamps. Place four clamps on each wire rope at the overlap area, and space 3 inches
apart, with a minimum of 6 inches from each end of wire rope (sketch 1, fig 7-3). Tension
the wire rope and tighten the clamps. Use one clamp to secure each thimble to the wire
rope at the stake pocket and shackle (fig 7-3).
K
8
Thimbles. Place one thimble on the wire rope at each stake pocket and shackle. Secure the
thimbles with one item J.
L
4
Same as item H.
M
4
Wheel blocks. Each consists of six 2 x 6 x 16-inch lumber. Cut and assemble each block as
shown in detail 3, figure 7-4. Place the blocks between the road wheels (two on each track).
GENERAL INSTRUCTIONS
1.
The load, as shown, is based on a flatcar with a width of 10 feet 6 inches.
2.
Handbrakes must not be set.
3.
Tensioning of wire rope can be accomplished with an applicable sized comealong mechanical hoist or equal tensioning
device.
4.
For further details, see General Rules 1, 2, 3, 4, 5, 9, 14, 15, 19A, and 19B, Section I of the Rules Governing the Loading of
Commodities on Open-Top Cars and Trailers, published by the Association of American Railroads.
Table 7-3. Application of Chain Tiedown for Securement of M1015 Carrier on Flatcars Equipped with
Cushioned Rub Rails (Fig 7-2).
Item
No. Reqd.
Application
A
Brake wheel clearance. Minimum clearance required is 6 inches above, in back of, and on
both sides of the wheel and 4 inches underneath the wheel (fig 7-2).
B
4 ea unit
Shackles. For carriers having a 1-inch-diameter hole in the towing provision, use a 1-inch-diameter pin
with a 7/8-inch steel, galvanized, coated anchor shackle. For carriers having a larger hole in the
towing provision, use an appropriate size pin and shackle. Attach the shackle to the front and rear-
towing provisions, and secure the pin with a piece of wire (for screw pin) or cotter pin (for other
types of shackles).
7-10

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