S.C. Code Regs. 38-393.106. What are the general requirements for securing articles of cargo?

(a) Applicability. The rules are applicable to the transportation of all types of articles of cargo, except commodities in bulk that lack structure or fixed shape (e.g., liquids, gases, grain, liquid concrete, sand, gravel, aggregates) and are transported in a tank, hopper, box or similar device that forms part of the structure of a commercial motor vehicle. The rules apply to the cargo types covered by the commodity-specific rules of Regulations 38-393.116 through 38-393.118, 38-393.128 and 38-393.130. (b) General. Cargo must be firmly immobilized or secured on or within a vehicle by structures of adequate strength, dunnage or dunnage bags, shoring bars, tiedowns or a combination of these. (c) Cargo placement and restraint. (1) Articles of cargo that are likely to roll must be restrained by chocks, wedges, a cradle or other equivalent means to prevent rolling. The means of preventing rolling must not be capable of becoming unintentionally unfastened or loose while the vehicle is in transit. (2) Articles or cargo placed beside each other and secured by transverse tiedowns must either: (i) Be placed in direct contact with each other, or (ii) Be prevented from shifting towards each other while in transit. (d) Minimum strength of cargo securement devices and systems. The aggregate working load limit of any securement system used to secure an article or group of articles against movement must be at least one-half times the weight of the article or group of articles. The aggregate working load limit is the sum of: (1) One-half of the working load limit of each associated connector or attachment mechanism used to secure a part of the article of cargo to the vehicle; and (2) One-half of the working load limit for each end section of a tiedown that is attached to an anchor point.