Table 7-2. Application of Materials for Blocking and Tiedown of M1015 Carrier on CONUS General-Purpose Flatcars (Figs 7-1 and 7-2).

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-

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

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).

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.

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.

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.

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.

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.

Shackles. Attach one to each front and rear towing provision.

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)

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).

Thimbles. Place one thimble on the wire rope at each stake pocket and shackle. Secure the

thimbles with one item J.

Same as item H.

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

The load, as shown, is based on a flatcar with a width of 10 feet 6 inches.

Handbrakes must not be set.

Tensioning of wire rope can be accomplished with an applicable sized comealong mechanical hoist or equal tensioning

device.

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

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).

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).

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