CHAPTER V, SECTIONS 1 and 2 EQUIPMENT PAINTED EVERY: Twelve months Twelve months Three months Six months Twelve months Continuous rotation Twelve months Twelve months Twelve months Three months Twelve months Twelve months 125-foot Tower and Cab 75-foot Towers M-boats (24 each) T-boats (9 each) Steel barges (6 each) DUKWs (20 each) Dry Dock Sea Mule Tug Boats (2 each) Sea Craft (3 each) Gilhoist and Tractor Buoys, large (25 each) SECTION 2 BUILDINGS AND STRUCTURES From the maintenance viewpoint, the alum- inum buildings proved well suited for general use at the Proving Ground as they were practically unaffected by corrosion and therefore did not require paint as a protective measure. This was particularly true of the first aluminum buildings erected, which have apparently been maintenance-free for about five years. Caution, was necessary however, in structures where dissimilar metals or alloys made contact. This was the case in the use of cast aluminum shutter clevises 4 stud post cups, while rolled aluminum was used for shutter and stud posts; this was conducive to electrolysis, as was a similar condition in the Butler type buildings where aluminum siding or roofing was permitted to make direct contact with steel purlins or girts. Corrective measures consisted of using felt be- tween the different types of metals, using neoprene washers around bolts, and greasing or coating cast or moving parts with oil. Routine maintenance consisted of repairs to roofing and siding due to normal incidence of accidental or storm damage, weatherproofing along the bottoms, and operational repairs to doors and sashes. Maintenance of tents primarily involved repairing or replacing canvas deteriorated by the elements. Preventive measures for canvas con- sisted of weatherproof spraying and reduction of chafing wherever possible. Experience indicated that canvas in this climate was good for LSTs. All earth-filled docks were continually subjected to wave and current action with resultant undermining and erosion. The continued movement of heavily-loaded tractor vehicles severly abraded the surfaces of the docks. Selected small aggregate stabilized with water and rolled proved to be the best surface. Weekly use of a scraper, followed by watering androlling, was necessary to maintain a proper surface particularly for use by fork lifts. It was considered, however, that in spite of such maintenance, the heavy service and frequent cargo boat im- pact justified the earth-fill type of dock. The maintenance requirement compared favorably with that of alternative types, timber being subject to a high incidence of marine teredos, and steel to rapid corrosion. Timber pile piers (such as the personnel piers at Elmer and Fred) were periodically inspected to determine the damage caused by marine life or wave action, and timber replacements were made as found necessary. Concrete boat ramps required frequent cleaning to rid them of accumulated sand. Maintenanceof buildings and structures in Military service followed the same pattern as those buildings allocated to civilian use and required similar attention. Considerable repair and replacement work was found necessary in Military buildings on site Fred, at Eniwetok, which, being beyond the scope of normal routine work, was covered by maintenance work orders. and the Elmer pier required extensive repairs during OPERATION CASTLE. This was Someof the buildings on Fred requiring maintenance included the radar tower, hangar, weather station, air operations building and dismantling of the POL tanks. The Contractor also furnished as a maintenance item various materials such as cement, aggregate, sand, lumber and paint Elmer pier was abetted by frequent docking of by them to maintain Military-owned facilities. one year’s usage. The Fred cargo pier, rehabilitated CeeBee pier surviving from 1949, was entirely rebuilt, due to normal wear, though damage to the Page 5-2 to the Military personnel for work undertaken