Chapter 7. RAIL TRANSPORTABILITY GUIDANCE

TM 55-3805-261-14

CHAPTER 7

RAIL TRANSPORTABILITY GUIDANCE

Section I. GENERAL

and unload the vehicle.

7-1. Scope

This chapter provides rail transportability guidance for

7-2. Maximum Utili zation of Railcars

movement of the model 130G grader.

It covers

Additional cargo as approved by the activity offering the

technical and physical characteristics as well as safety

items for transport may be transported with the vehicles.

considerations.

The chapter also prescribes the

materials and guidance required to prepare, load, tie

down,

Section II. TRANSPORT ON CONUS RAILWAYS

pose railcar. Table 7-1 is the bill of materials for the

7-3. General

blocking and tiedown of the model 130G grader. Table

The transportability guidance contained in this section is

7-2 provides data for the application of materials

applicable when the model 130G grader is transported

required to restrain the vehicle.

on CONUS railways. Figure 7-1 shows the model 130G

grader loaded on a wooden deck, general-pur-

Table 7-1. Bill of Materials for Blocking and Tiedown of the Model 130G Grader on a General Purpose Flatcar

Approximate

Approximate

Item

Description

Quantity

Lumber

Douglas-fir, or comparable, straight-grain. free from material defects; Fed Spec MM-L-751C:

2- x 4-inch

22 linear feet

4- x 4-inch

2 linear feet

1- x 8-inch

24 linear feet

4- x 8-inch

8 linear feet

Nails

Common, steel; flathead; bright or cement-coated; para 3.6.11.2, Fed Spec FF-N-105B:

40d

160

Wire rope

6 x 19, IWRC; improved plow steel: preformed. regular-lay; table X, Fed Spec RR-W-410:

5/8-inch

60 feet

Clamps

Wire rope, U-bolt clips, saddled, single-grip, steel, Crosby heavy-duty, or equal; MIL-STD-16842: 5/8-

inch

Thimbles

Standard, open-type: 5/8-inch

Table 7-2. Application of Materials for Blocking and Tiedown of the Model 130G Grader on a General Purpose Flatcar

(Fig 7-1)

Item

No. Required

Application

Brake-wheel clearance. Minimum clearance required is 6 inches above, in back of, and on both sides of and 4

inches underneath wheel.

Side blocks. Each to consist of 4- x 8- x 1 -inch lumber shaped to pattern B. Locate one inside of each wheel.

Secure to car floor with five 40d nails in heel and one 40d nail in each side of block.

Chock blocks. Each to consist of a piece of 1- x 8-inch lumber cut to dimensions as shown, and one face

plate of 2- x 4- x 16-inch lumber. Locate completed blocks against wheels in the pattern depicted. Secure

each to car floor with five 40d nails in each heel and one 40d nail in each side of block.

Bearing pieces. 4. x 4- x 12-inch lumber. Locate under scraper blade, each side, and secure each to car floor

with three 40d nails.

Thimble, open-type, 5/8-inch. Place one at bottom of each stake pocket, and one each on front and rear

tiedowns of grader

7-1