Quantcast Blocking - TM-9-2330-330-14-P0652

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TM 9-2330-330-14&P
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If suitable hoisting equipment, permanent loading ramps, and handling equipment are not available
for loading or unloading material, construct improvised runways, ramps, and spanning platforms.
Loading must be governed by the capacity and length of flatcars available at the time of shipment,
as well as requirements of bills of loading and shipping instructions.
Position the vehicle as far from the brake wheel end of the flatcar as space permits. Provide
minimum clearance of 4 in. (10.2 cm) below and 6 in. (15.2 cm) above, behind, and to each side of
the flatcar brake wheel.
All blocking instructions specified herein are minimum and are in accordance with the Association of
American Railroads Pamphlet, Section No. 6 (Rules for Governing the Loading of Department of Defense
Material on Open-Top Cars). Additional blocking may be added at the discretion of the officer in charge.
Construct four chock blocks: two to fit the angle between the front wheels and car deck and two to fit the
angle between the rear wheels and car deck at the rear of the vehicle.
Using lumber 1-5/8 in. (4.13 cm) thick, make chock blocks 12 in. (30.5 cm) wide and a minimum of
18 in. (45.7 cm) high. Nail the pieces together with 20-penny nails.
Place one chock block against the front of each wheel and against the rear of each wheel. Toenail
chock blocks to the car floor with 40-penny nails.
End Cleats
Place one end cleat (2 x 4 x 12 in. [5.1 x 10.2 x 30.5 cm]) against the end of each chock block and
secure it to the car deck with 30-penny nails. Eight are required.
Place upper cleat on top of lower cleat and secure to lower cleat with 30-penny nails.
Side Cleats
Locate one cleat (2 x 3 x 10 in. [5.1 x 7.6 x 25.4 cm]) against inside and outside of each chock
block. Eight are required.
Secure each to the car deck with 20-penny nails.
Holddown Rods
Thread both ends of the holddown rod (1-1/4 in. [3.2 cm] in diameter) as long as required.
Insert one end of the holddown rod through the lifting eye on the front of the vehicle.
Bend the rod and insert the other end through the stake picket on opposite side of the flatcar.
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