Sec. 6-Fig. 70 (Rev.-9-1977)
(Drawing Redrawn 9-1977)
SEMI-TRAILERS, DOUBLE DECKED, WITH TWO WHEEL DOLLYS-FLAT CARS
No. of Pcs.
Brake wheel clearance. See Fig. 2, Sec. 1.
Blocks, pattern 16. Locate 45 degree portion of block in front and rear of each wheel. Secure
heel of block to car floor with three 40-D nails and toenail that portion under tire with
two 40-D nails on each side.
Each to consist of three pieces of 2 in. x 4 in. x 24 in. lumber and one piece of 2 in. x 6 in. x 24
in. lumber. Nail the 2 in. x 6 in. piece to the edge of one 2 in. x 4 in. piece with four 12-D
nails. Place against the tire with suitable protective material, such as waterproof paper or
burlap, etc. between the bottom 2 in. x 4 in. piece and between the tire and the 2 in. x 6 in.
piece. Nail the bottom 2 in. x 4 in. piece to the car floor with four 20-D nails. Nail the other
two 2 In. x 4 in. pieces to the one below in the same manner.
Supports, built up of two double 2 in. x 6 In. uprights and cross pieces, 2 in. x 6 in. braces and
2 in. x 4 in. floor cleats. Locate suitably under towing bar of dollies, as shown.
3/4 in. dia. bolts. Locate two on each side of units, as shown. Pass through 1/4 in. x 3 in. x 5 in.
plate, stake pockets of top and bottom units and lower 1/4 in. x 3 in. x 5 in. plates.
2 in. x .050 in. high tension band. Pass over frame of front end of semi-trailer, as shown, and
through opposite stake pockets.
Each to consist of 3/8 in., 6 x 19 IWRO wire rope, single strand. Attach to frame or spring
shackles at rear of semi-trailer, as shown, and through stake pockets. Fasten each end of
wire rope with three 3/8 in. cable clips. 3/8 in. thimbles must be used at each stake pocket to
protect wire rope and secured to the wire rope with one 3/8 in. cable clip.
Each to consist of 3/8 in., 6 x 19. IWRO wire rope, single strand. Attach to frame or spring
shackles of each dolly, as shown, and through stake pockets. Apply thimbles as outlined in
Item "G", above.
Each to consist of two pieces of 2 in. x 4 in. x 18 in. lumber. Locate, as shown, at each of panels
and secure lower piece to floor with three 30-D nails and top piece to one below in like
1 1/4 in. x .035 high tension bands. Locate two lengthwise encircling panels, and two cross-
wise, as shown.
See General Rules 1, 2, 3, 4, 5, 9, 14, 15 and 19-B for further details.