TM 55-2200-001-12
Sec. 6-Fig. 43
PONTOONS, STEEL-TWO LAYERS-GONDOLA CARS
Item No. of Pcs.
Description
A
Brake wheel clearance. See Fig. 2.
B
2 per load.
2 in. x 4 in., long enough to extend from floor to top of car end. Locate about 4 ft. apart and
secure with one 1 in. x 3 in. at top, to prevent toppling over.
C
1 ea. bottom
2 in. x 4 in., length 1 in. less than width of car, per Sketch 1. Substitute, if desired, on wood floor
pontoon.
cars, 2 pieces 2 in. x 4 in., length equal to distance between inside face of lugs. Secure lower
piece to floor with four 30-D nails and top piece to one below in like manner, per Sketch 2. Not
required when Items "E" are used.
D
1 ea. bottom
2 in. x 4 in., length equal to distance between inside face of lugs. Secure on top of Item "C" with
pontoon.
four 30-D nails. Not required when Items "C", per Sketch 2, or Items "E", are used.
E
As required.
Each to consist of two pieces of 2 in. x 4 in. x 24 in. Locate and space equally against each side
of adjoining pontoon. Secure lower piece to floor with five 80-D nails and top piece to one
below in like manner. Not required for steel floor cars or when Items "C" and "D" are used.
F 4ea. pr. pontoons.
1/4 in. x 2 1/2 in. x 5 3/4 in. plates. Secure to top and bottom pontoons with two 3/4 in. dia.
bolts. Use washer or plate under head of bolt.
G
6 pr. per load.
1/4 in. x 2 1/2 in. x 25 1/2 in. plates. Locate as shown. Secure to pontoons, on top of Items "F"
with one 34 in. dia. bolt at each end.
H
As required.
1/4 in. x 2 1/2 in. x 25 1/2 in. plates. Locate, as shown, secure to pontoons with one , in. dia.
bolt at each end. Use washer or plate under head of bolt.
J
As required.
1/4 in. x 2 1/2 in. x 25 1/2 in. plates. Locate as shown either horizontally or diagonally and
secure to pontoons on top of Item "F" with one 3/4 in. dia. bolt at each end.
K
8 per load.
2 in. x 6 in., long enough to extend from floor to top of car end. Locate both end pieces outside
of outside lugs and one piece under center lug.
L
2 per load.
2 in. x 4 in., length 1 in. less than width of car. Secure to each Item "K", above Items "O", with
three 30-D nails.
M
8 per load.
2 in. x 6 in., long enough to extend from floor to top of car ends, spaced same as Items "K".
N
2 per load.
2 in. x 4 in., length 1 in. less than width of car. Secure to each Item "M" with three 30-D nails.
O
6 per load.
4 in. x 4 in., length equal to distance between Items "K" and "M". Secure to Items "K" and "M",
as shown, with six 30-D nails each.
See General Rules 4, 5, 9, 11, 14 and 15 for further details.
E-53
