Appendix D-1. FABRICATION OF BOX, WOOD, CLEATED-PLYWOOD, PPP-B-601, OS TYPE, STYLE A

TM 43-0156

APPENDIX D-1

FABRICATION OF BOX, WOOD,

CLEATED-PLYWOOD, PPP-B-601,

OS TYPE, STYLE A

D-1-1. General

Unless stated otherwise, all box dimensions specified in the instructions for shipment are inside dimensions.

D-1-2. Construction of Boxes

a. Panels, Cleats, and Skids. For weights up to 500 pounds, use 1/4-inch plywood for panels. For weights

exceeding 500 pounds up to 1,000 pounds, use 1/2-inch plywood. All cleats will be 1- by 3-inch lumber. Skids will be 3

by 4 inches.

b. Arrangement of Edge Cleats. Each panel has two through-cleats and two filler-cleats. Position the through-

cleats opposite each other at the edge of the plywood, with the filler-cleats between the through-cleats at the edges.

c. Fastening Plywood to Cleats. Fasten cleats to plywood using 4d, cement-coated nails. Stagger nails in two

parallel rows with maximum spacing alternately 3 inches from center to center. Nail through the cleat and the plywood;

then, clinch 1/8-inch minimum.

d. Intermediate Cleats. Use an additional 1- by 3-inch wood cleat when an unframed area exceeds 24 inches in any

dimension; secure cleat in the same manner as the edge cleats.

e. Assembly of Box Panels. Arrange panels so that one through-cleat and one filler-cleat form each edge of the

box. Arrange the cleats to form a standard box corner (fig. D-1). The top and bottom panels will overlap sides and

ends. Nail all panels to each other by single-line nailing; use 6d, cement-coated nails with 5-inch spacing between nails.

f. Application of Skids. Provide two skids, made of 3- by 4-inch lumber laid flat and secure crosswise, i.e., across

the width of the box, when gross weight exceeds 200 pounds. From the bottom side, bevel each end at a 450 angle one-

half the thickness of the lumber. Notch the skids at the appropriate locations to allow the passing of 3/4-inch steel

strapping between the bottom panel and the skid. Provide additional skid when the distance between inside edges of

skids exceeds 48 inches. Use 1- by 3-inch filler-cleats between the bottom panel and the skid, thereby filling the void

and adding support to the bottom panel, the filler-cleats, and into the skid. Use two rows of nails in a staggered pattern.

Spacing between nails in each row should not exceed 6 inches.

g. Strapping. Apply 3/4-inch, QQ-S-781, steel strapping, as shown in figure D-1. Strapping will not be stapled.

D-1-1