Section III. INTERIOR BLOCKING, BRACING, AND CUSHIONING OF INDUSTRIAL PLANT EQUIPMENT AND ACCESSORIES

TM 38-260

(a) MIL-C-52950 Crates, Wood, Open and Covered, Maximum Load 4,000 Pounds (1,814kg).

(b) MIL-C-3774, Crates, Wood, Open, 12,000 and 16,000 Pound Capacity (5,443kg to 7,257kg).

Pounds) (13,608kg).

Section III. INTERIOR BLOCKING, BRACING, AND CUSHIONING OF

INDUSTRIAL PLANT EQUIPMENT AND ACCESSORIES

8-4. Interior Blocking, Bracing, and Cushioning Requirements

a. General. There are essentially two causes of potential damage to IPE. They are:

(1) Damage from climatic hazards.

(2) Damage from physical hazards.

b. Factors to be considered in blocking, bracing, and cushioning. To block, brace, or cushion IPE, the natural

and physical limitations of the equipment must be thoroughly considered.

(1) Shock resistance. The resistance of a piece of equipment or component to shock means its ability to

withstand impact without damage. It is the primary factor in determining whether equipment is to be regarded as rugged,

semifragile, or fragile.

(a) Equipment and components are considered rugged if they can withstand severe impact without damage.

Rugged items can be blocked and braced rigidly. In general, cushioning is used on rugged items only to prevent surface

abrasion.

(b) Equipment and components are classed as semifragile if they can withstand a limited amount of impact

without damage. any semifragile items can be fastened to one face of a container to prevent damage. At least 2 inches

(51 mm) clearance should be allowed between the items and all other faces of the container. Cushioning shall be used in

the packing of semifragile articles to prevent surface abrasion and to absorb part of the impact.

an item is fragile, the interior pack must provide sufficient cushioning to absorb the shock to which the pack may be

subjected. Fragile items shall not be fastened to or

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