Table 7-1. Bill of Materials Blocking and Tiedown of MW24C on CONUS General-Purpose Flatcar (Figs 7-1 Through 7-3).
Douglas-fir, or comparable: straight-grain, free from material defects;
Fed Spec MM-L751H:
80 linear ft
12 linear ft
100 linear ft
Common, steel: flathead: bright or cement-coated; table XI-b,
Fed Spec FF-N-105B:
Standard, open-type: 5/8-inch
Wire rope, U-bolt clips, saddled, single-grip; steel; Crosby heavy-duty, or equal;
MIL-STD 16842: 5/8-inch
Waterproof paper, burlap, or other suitable material
Anchor, screw pin, l-inch pin size; NSN 4030-00-542-3182
6 x 19, IWRC; improved plow steel; preformed, regular-lay; table X, Fed Spec RR-
Table 7-2. Application of Materials for Blocking and Tiedown of MW24C loader on CONUS General-Purpose Flatcar
Brake wheel clearance. Minimum clearance required is 6 inches above, in back of, and on both sides of,
and 4 inches underneath wheel.
Blocks (detail 1, fig 7-3). Locate one against the front and rear of each wheel.
Side cleat. Each consist of one piece of 2- x 4- x 20-inch lumber. Locate one piece on each side of each
item B. Secure to car floor with six 30d nails.
End cleat Each to consist of two pieces of 2- x4-x 12-inch lumber. Locate one against end of each
item B. Secure lower piece to car floor with four 30d nails and top piece to lower piece with four
1 each item F Cushioning material. Locate bottom portion under item F: the top portion should extend 2 inch above
item F (detail 2, fig 7-3).
Side block. Each to consist of one piece of 2- x 6- x 36-inch lumber and three pieces of 2- x 4- x 36-inch
lumber (detail 2, fig 7-3). Nail one edge of 2- x6- x 36-inch piece to bottom 2-x 4- x 36-inch piece
with five 12d nails. Then place against tire and nail to car floor through 2- x 4- x 36-inch piece with
four 20d nails. Nail the other two 2- x 4- x 36-inch pieces to one below in the same manner.
Wire rope. Each to consist of one piece of 5/8-inch wire rope. length as required (about 15 feet). Form
a complete loop between tiedown shackle or provision and appropriate stake pocket (detail 3, fig
7-3). Wire-rope ends should overlap a minimum of 24 inches.
Clamps. Place four on each wire rope at the overlap area and space 3-3/4 inches apart with a
minimum of 6 inches from ends of cable. Place one clamp under each stake pocket and shackle, to
secure wire rope and thimble together (detail 3, fig 7-3).
Thimbles. Place one at bottom of each stake pocket (four) and each front shackle, item K, where used.
Shuckles. Attach one to each front tiedown provision of the MW24C scoop loader.
1. Handbrakes are to be set and air tanks must be drained.
2. Gearshift levers must be placed in the neutral position and wire-tied.
3. See General Rules 1, 2, 3, 4, 5, 9, 14, 15, 19A, 19B, and 19C, section 1 of the Rules Governing the Loading of Commodities on Open-Top
Cars and Trailers, published by the Association of American Railroads, for further details.
4. Tensioning of wire rope can be accomplished with an applicable size come-along mechanical hoist or equal tensioning device.
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