Table 7-2. Application of Materials for Blocking and Tiedown of LACV-30 Components Shown in Figure 7-1

TM 55-1930-218-14

Table 7-1 Continued

Item

Description

Approximate Quantity

6- x 8-inch

51 linear ft

Plywood

3/4-inch thick

4 square ft

Styrofoam

Beadboard, 4-inch x 4- x 8-foot (may also be supplied in 4-inch x 2- x 8-foot sheets)

55 sheets

Nails

Common, steel; flathead; bright; table XI-b, Fed Spec FT-N-105B: 20d

30d

40d

480

Wire rope

6x19, IWRC; improved plow steel; preformed, regular-lay; table X, Fed Spec RR-W-410C:

268 ft

3/8 inch

Thimbles

Standard, open-type: 3/8-inch

Clamps

Wire rope, U-bolt clips, saddled, single-grip, steel, Crosby heavy-duty, or equal; Fed Spec

148

FF-C-450D: 3/8-inch

Turnbuckles

Eye-and-eye, galvanized, weldless, dropforged, 5/e-inch eyes, 12-inch takeup

Strapping

Steel, high tension; Fed Spec QQ-S-781H, type I or IV, 1 1/4- x .035-inch

1,215 ft

Seals

Steel strapping; Fed Spec QQ-S-781H, type D

410

Table 7-2. Application of Materials for Blocking and Tiedown of LACV-30 Components Shown in Figure 7-1

Item

No. Required

Application

Styrofoarn Beadboard, 4-inch x 4- x 8-foot sheets or 4-inch x 2- x 8-foot sheets. Distribute beneath the

sectionalized components to protect the hinge attachment points and to provide separation of the components

from the railcar deck. Position between all stacked components to protect the hinge attachment points and to

provide separation between components. Arrange so that approximately 50 to 60 percent of all bottom

surfaces rest on the styrofoam bead-board.

Chock blocks (detail 1, fig 7- 10). Locate Flat portion of the block against both sides of the components.

Space as shown in figure 7-1. Before nailing, install item C. Nail heel of block to car floor with three 40d nails,

and toenail both sides of block to car floor with two 40d nails.

Filler strips. Cut pieces of 2- x 4- x 10-inch lumber and install between the side of the power module with port

midcraft buoyancy box and the upper face of the chock blocks. The filler strip serves as a bearing plate for the

face of the chock block and prevents pressure from being placed against the flange.

Wire rope, 3/8-inch. Locate as shown in figure 7-1. Form a complete loop through the railcar stake pocket

and one eye of the turnbuckle (item G). Form a complete loop through the tiedown point of the module and

the other eye of the turnbuckle. The ends of both loops of the wire rope must overlap at least 15 inches.

Clamps, 3/8-inch. Secure the ends of the wire rope at the overlap areas with four clamps spaced 21/4 inches

apart, leaving a minimum of 6 inches from ends of rope. Place one additional clamp to secure thimble (item

F) and wire rope together at stake pocket (detail 2, fig 7-10).

Thimble, open-type, 3/8-inch. Place one at bottom of each stake pocket where wire rope passes through

(detail 2, fig 7-10). Attach thimble to wire rope with one clamp (item E).

Turnbuckles, 5/8-inch eyes. Tighten turnbuckles until wire rope loops are tensioned enough to cause a slight

depression of Styrofoam Beadboard under load. DO NOT OVERTIGHTEN. Wire-tie turnbuckles to prevent

loosening during transit.

Strapping boards, 2- x 4- x 10-inch lumber, beveled to fit top edges of modules. Position under steel straps

(item K) to protect flanges and corners of modules.

Strapping boards, 1- x 4-inch x 10-foot lumber. Position under steel straps (item K) across walkways of cabin

module.

Steel straps, 1 1/4- x .035-inch x cut-to-length. Position as shown in figure 7-1. Each strap is fabricated by

looping a length of strapping through the stake pocket on each side of the railcar, with a pad (item L) between

the strap and the railcar stake pocket. The loops are formed by attaching two seals (item M), butted together,

at least 18 inches above the railcar deck (detail 3, fig 7-10). Overlap the two lengths of strapping at the top of

the load, tighten, and join with two seals butted together. All seals at strapping joints must have two pairs of

crimps per seal (detail 4, fig 7-10).

Pad, 1 /4- x .035 x 18-inch steel strap. Position under and seal to item K at each stake pocket (detail 3, ft 7-

10).

Seals, steel strapping. Two seals required for joining strapping at each joint (detail 4, fig 7-10). One seal

required for securing each pad (item L) to strap.

Bracing. Consists of 2- x 8-inch x cut-to-length lumber. Brace as required between modules to prevent for-

as required

and-aft movement. Secure to car deck and to other bracing with 40d nails. Lumber for this requirement not

included in table 7-1.

Table 7-3. Application of Materials for Blocking and Tiedown of LACV-30 Components Shown in Figure 7-2

Item

No. Required

Application

Styrofoam beadboard, 4-inch x 4- x 8-foot sheets, or 4-inch x 2- x 8-foot sheets. Distribute beneath the

sectionalized components, except the crated propellers, to protect the hinge attachment points and to provide

separation of the components from the railcar deck. Position between all stacked components, except the

crated propellers, to protect the hinge attachment points and to provide separation between components.

Position between the ends of the port and starboard aft side decks and the railcar bulkhead. Arrange so that

approximately 50 to 60 percent of ail bottom surfaces rest on the styrofoam beadboard.

7-8