Anchoring of butt boards.

TM 38-400/NAVSUP PUB 572/AFMAN 23-210 MCO 4450.14/DLAM 4145.12

inches of height plus the slope of the lumber bed. For

or other soft wood is substituted for oak. The angle on

example, suppose the slope of the foundation on which

the butt boards is designed to give a forward pitch to

the lumber will be placed is 11/2 inches in each 12

each draft of 1%/8 inches to each 12 inches in height.

inches of length. The slope forward on the butt board

Since the slope of the stack foundations from front to

will then be 11/2 inches plus fiveeights of an inch in

rear is 1 inch for each 12 inches of length, this provides

each 12 inches of height of the butt board. This equals

five-eighths of an inch pitch per foot in height in the

21/8 inches forward slope or pitch of the butt board in

completed stack. Should the slope of the lumber beds

each 12 inches of height. For each 10 feet of height

vary from 1 inch of slope in 12 inches of length, an

from the bottom of the first draft, the stack will project

adjustment to correct the pitch can be made easily by

forward 61/4 inches at the top beyond the end of the

starting with a line perpendicular to the ground, then

bottom board.

giving a forward pitch of five-eighths of an inch to each

Figure 5-4. Diagram of butt boards used to control pitch on draft face.

by-4 is sometimes placed across the base flush against

(2) Anchoring of butt boards.

Once the

and parallel to the face of the butt board. In this way,

position of each butt board is established, it should be

the front end of the draft should just clear the forward

anchored firmly. This can be done by driving iron rods

straddle carry truck bolster so that a portion of the

into the ground at points where pressure will be exerted

weight of the front end of the draft rests on the 2-by-4. It

or by nailing pieces of 2-inch stock to the butt board,

is essential that each butt board remain in exactly the

extending these pieces to the platform, and nailing the

same position

pieces securely to the platform. To assist in stabilizing

the butt board, a 2-

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