Cast iron was used for all floor drains, floor sinks, and traps, except integral fixture traps. All soil and waste piping was standard weight, cast iron, bell and spigot, soil pipe and fittings, made up with lead caulked joints. Services from water mains to within five feet of buildings were shown on the Water Distribution Plans and were specified to be copper tubing, with flared fittings. When the first plumbing plans were drawn, aluminum pipe was shown for underground piping. These plans were revised in view of the short supply of aluminum pipe at the time and piping was changed to copper tubing. All subsequent plumbing drawings indicated copper tubing for underground water piping. Copper tubing with solder fittings was used for oil piping from oil tanks to equipment. 638-T6 anodized, iron pipe size, aluminum pipe, and anodized cast aluminum fittings were specified for all above-ground water and vent piping. Alumilite No. 204 treatment for aluminum pipe and fittings was authorized January 25, 1950, in lieu of anodizing because alumilite treatment was found to provide better protection and could be applied to full lengths of pipe whereas lengths of pipe longer than twelve feet could not be anodized, To prevent electrolysis caused by joining dissimilar metals, plastic nipples on fittings were installed between all aluminum pipe or fittings and steel, brass, or copper pipe or fittings. When construction work was started, aluminum pipe and fittings had not arrived at the site because of delays encountered in manufac- turers' deliveries. In order to complete some of the buildings for occupancy, galvanized steel pipe was used for water piping in the toilet rooms. When aluminum pipe and fittings were available at the site, this piping was changed to comply with the specifications as it became necessary, Pot sinks and dishwashers in all mess hall kitchens and in the kitchen of Dispensary Building No. 24, Eniwetok Island, were connected to grease traps located outside of the buildings and adjacent to the outside walls. Hangars or supports for overhead pipes in the buildings were constructed of aluminum angles or aluminum straps bolted to building purlins or wall plates. Outside pipe supports were constructed of standard steel pipe with cross arms welded to uprights. Supports were set in concrete, Since the temperature of the fresh water in the system was esti- mated to be from 75°F to 80°F, it was decided that hot fresh water would be furnished only to special buildings, such as mess halls, bakeries, laundries, post exchanges, barber shops, post offices, dispensaries and infirmaries, and the Task Force Commander's Quarters. Cold fresh water was furnished to all buildings requiring water. 5-123