Figure 6-2. Typical blocking and tiedown of HMMWV in LASH lighter or SEABEE barge.

25 August 1988

TM 55-2320-280-14

Table 6-1. Bill of Materials for Blocking and Tiedown of HMMWV (Fig. 6-1)

Item

Description

Approximate

quantity

Lumber ...................................

Douglas-fir, or comparable; straight-grain, free from material

60 linear feet

defects; Fed Spec MM-L-751H: 4 x 4-inch.

Nails .......................................

Common, steel; flathead; bright or cement-coated; Fed Spec

FF-N-105B: 20d, 50d ..........................................................

Wire rope ...............................

6 x 19, IWRC; improved plow steel; preformed, regular-lay; Fed

60 feet

Spec RR-W-140C; 3/8-inch.................................................

Clamps...................................

Wire rope, U-bolt clamps, saddled, single-grip, steel, Crosby

heavy-duty, or equal; MIL-STD 16842: 3/8-inch.

Turnbuckles ............................

Eye- and jaw-type, 1/2-inch diameter x 6-inch takeup; Fed Spec

FF-T-791B, or equal............................................................

Thimbles ................................

Standard, open-type, 3/8-inch....................................................

Table 6-2. Application of Materials for Blocking and Tiedown of HMMWV (Fig. 6-1)

No.

Item

Required

Application

A ........

2 Side blocks. Each consists of 4- x 4- x 238-inch lumber. Locate one piece

against outside of wheels on each side of HMMWV.

B ........

2 End blocks. Each consists of 4- x 4- x 64-inch lumber. Locate on top of item A

and against wheels, as shown in figure 6-2. Nail to item A with four 50d nails

at each end of item B.

6-3