Type of Load and Critical Items Consideration

TM 38-260

1-8.

Type of Load and Critical Items Consideration

a. Type of loads. The term "ype of load" refers to the physical characteristics of the item, including the nature of

the item as it contributes to the support of, or possible damage to, the container. The design of the shipping container to

be used is influenced by the type of load. There are three types of loads, type 1, type 2, and type 3.

(1) Type 1, easy load. This type of load is composed of a single item or single interior package which provides

complete and uniform support to all faces of the shipping container. The container contents are of moderate density, are

relatively sturdy, and require no blocking or bracing.

(2) Type 2, average load. This type of load is composed of more than one item or possesses an interior container

which gives some support to all faces of the shipping container. The contents are of moderate density and are relatively

sturdy. Blocking and bracing is sometimes needed.

(3) Type 3, difficult load. This type of load gives little or no support to the shipping container. The contents vary

from extremely heavy to very fragile and are very irregular in shape. Blocking and bracing is used to convert type 3

loads into type 1 and type 2 loads.

b. Weatherproofing. Weatherproofing, when necessary, is to provide a waterproof barrier in the form of a case

liner, crate liner, shroud, or wrap fabricated of barrier materials, conforming to PPP-B-1055 or MIL-B-121. Such

waterproof barriers are primarily intended to prevent deterioration of the items and of the preservation materials used to

protect the articles by excluding entry of free water or by diverting water from materials which are subject to water

damage. In addition, waterproof barriers will afford protection from dust, dirt, and other foreign matter. Waterproof

barriers will not be used when the interior packs are already waterproofed or when asphalt (in some of barrier materials or

sealants) would be injurious to the enclosed articles.

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Sources of National Stock Numbers

a. National stock numbers are listed in Federal Supply Catalogs (FSCs) published by the Defense Logistics

Agency (DLA).

b. Catalogs published by General Services Administration contain numbers and descriptions of items handled by

the agency.

1-10.

Application

a. This manual is primarily intended as a basis for indoctrination of industry and Government personnel, both

military and civilian, in the art of preparing IPE and OPE for storage or shipment.

b. It may be used as a guide by Government personnel having responsibility for the

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