JOHNSTON ATOLL F &S NO. 02006 USER SUPPORT TITLE Joint Operations Center (JOC) STRUCTURE. FACILITY NO. JTF SCIENTIFIC STATION NO. 20 BOD None . FUNDING AGENCY AEC ($000) ENGR FOD PROC TOTAL FURN 2830. 3 2830. 3 233.0 PRE-GO Prior Cost ITF-8 MILCON CRO7-64 CONST PRE -GO Prior Cost POST-GO 209.8 1334.8 1544. 6 TOTAL 209, 8 4165.1 4374.9 75.0 308. 0 COMPLETED DESCRIPTION The Joint Operations Center is located in the northeast corner of Johnston Island. This building is a four story, steel frame structure with prefabricated concrete panel sides and a hardened roof to provide protection against falling objects. The building was initially completed in 1965. The building is 142 x 190-ft. and provides approximately 27,000 square feet of space per floor. This space is air conditioned with humidity control. There is approximately 46,000 square feet of office space, approximately 21,000 square feet of laboratory space, and approximately 27,000 square feet of operational control area. The remainder of the space is required for passageways, latrine facilities, cable and duct shafts, and utility closets. Concrete block interior walls form a central core from the first through the fourth floor which provides space for the timing and firing center, control posts, technical operations, and communications facilities. An equipment room (within the core) on the first floor contains electrical switchgear, power generating equipment, and air conditioning equipment. The space outside the central core is divided into individual offices and rooms by moveable full height and partial height partitions. The building air conditioning system provides temperature and humidity control by automatic and manual controlin individual areas. The air conditioning units provide a combined refrigeration capacity of approximately 600 tons. A double ended substation connected to the 4160 volt electrical feeders 7 and 8 provides 2000 kva of 277/480 volt power for distribution throughout the building. Step-down transformers are located in the building to provide power at the voltages required by the various Users. VOL I 2-6 “ |