c. Small items having rectangular column or circular pedestal bases may be tiered or stored on top of items of the types specified in "a" and "b" provided suitable crating or dunnage is inserted between items so that the load is borne by the crating or dunnage, and not by the bottom layer of equipment. In order to avoid permanent distortion of frame members, all items, whether resting on the floor or tiered, shall be supported in sueh a manner that no undue stress or strain is set up in frame members, 4-15, SHROUDING. Shrouding is covering the equipment with water-proof barrier-material to provide protection from contamination normal to storage conditions, Shrouding materials shall conform to Specification JAN-P-125. These shrouds shall be formed as determined by the responsible personnel to facilitate inspection without injury to the shroud. Emphasis shall be placed on overhead protection, ease of removal, amd replacement without injury to shroud. Care shall.be taken not to seal the bottom of the shroud as this will interfere with free circulation of air and routine inspection. Shrouding should cover the upper portion of the machine to act as top covering, and shall extend not more than half way down the sides of the equipment, left loose, not fastened too tightly, using tape conforming to Specification JAN-P-127, ‘ 18-39