CHAPTER V, SECTICNS t and 2 EQUIPMENT PAINTED EVERY: 125-foot Tower and Cab 75-foot Towers M-boats (2-4 each) T-boats (9 each) Steel barges (6 cach) DURWs (20 each) Dry Dock Twelve months Twelve months Three months Six months Twelve months Continuous rotation Twelve months Tug Boats (2 each) sea Craft (3 cach) Gilboist and Tractor Buoys, large (25 eacn) ‘Twelve months Three months Sea Mule Twelve months Twelve months Twelve months SECTION 2 BUILDINGS AND STRUCTURES From the maintenance viewpoint, the aluminum buildings proved well suited iur general use at the Proving Ground as they were practically unaffected by corrosion znd 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 and 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 sirts. Corrective measures consisted of using felt between the different types of metals, using neonrene washers araund holts. 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 deter! srated bythe elements. Preventive measures for canvas consisted of weatherproof spraying and reduction of chafing wherever possible. Experience indicated that canvas in this climate was goodfor one year's usage. The Fred cargo pier, rehabilitated CecBee pier surviving from 1949, was entirely rebuilt, and the Elmer pier required extensive repairs during OPERATION CASTLE. This was due to normal wear, though damage to the Elmer pier was abetted by frequent docking of LSTs. All earth-filled docks were continually subjected tu cvave and current action with resultant undert uining and erosion. The continued movement of heavilv-loaded tractor vehicles severly abraded the surfaces of the docks. Sclected small aggregate stabilized with water and rolled proved to be the best surfece. Weekly use of a scraper, followed by watering and rolling, Was necessary to maintain a proper surface particularly for use by fork lifts. [t was considered, however, that in spite of such maintenance, the heavy service and frequent cargo boat impact justified the earth-fill type of dock. The maintenance requirement compared favorably with that of alternative types, timber ceing subject to a high incidence of marine ter-dos, and steel to rapid corrosion. Timber pile 2iers (such as the personnel piers at Elmer and Fred) were periodically inspected to determine the damage cansed hy marine life or wave action, and timber replacements were made as found necessary. Concrete boat ramps required frequent cleaning to md them of accumulated sand, Maintenance of 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. Some of the buildings on Fred requiring ma/ntenance 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 to the Military personnel for work undertaken by them to maintain Military-owned facilities. Page 5-2 GARGETE ANEa tee woe career om o tn Yoofrb. aTeeadiehlieeetiatid