CHAPTER II, SECTION 3 Station 1212.01 pipeline was over the ocean reef from Station 21 to Pinhole Station 1210.01 located on a man-madeisland off Site Helen. The pipeline was supported throughout its length on 8-inch steel piles driven into the reef at intervals of 30 feet for the 36-inch, 18-inch, and 16-inch pipe sizes, 25 feet for 12- inch pipe, 20 feet for 8-inch pipe, for 4-inch pipe. A typical support one vertical pile with a welded frame detail at the top of the pile. and 14 feet consisted of angle yoke Adjustment of line and grade was accomplished by welded steel shims to the frame only. Two bellowstype expansion joints were installed in the 12-inch pipe section at approximately the center of the pipeline length, and one on each side of a two-pile anchor and support. The endsof the pipeline were anchored by a two-pile detail at the first support on Site Gene and at the end of pipe on the man-made island by embedment of the pipe in the concrete wall of Station 1210.01 with welded slip on square plates flush against the inner and outer wall surfaces. The total length of this line was approximately 1500 feet. Station 1212.02 pipeline ran overland and over the ocean reef from Station 1211, Irene, to Pinhole Station 1210.01 on the man-made island. The pipeline was supported on 8-inch steel piles at intervals of 30 feet for 36-inch, 30-inch, 24-inch, 20-inch, and 16-inch pipe sizes, 25, feet for 12-inch pipe, 20 feet for 8-inch pipe, and 14 feet for 4-inch pipe. Typical supports were the same as for Station 1212.01, except for the overland piling on Site Irene where the piling driven into sand was encased in concrete for lateral stability. Three bellows-type expansion joints were installed in this run of pipe. The end of the pipeline at Pinhole Sta- tion 1210.01 was anchored in the same manner as for Station 1212.01. The opposite end of the line was anchored at Station 1410, Site Trene. The vacuum was produced by vacuum pumps located in Station 1213 close to the Site Gene end of theline. STATION: 1213 SITE: Gene USER: LASL PURPOSE: Vacuum Pump House PARTICIPATION: 21 DESIGN PSI: None CONSTRUCTION: 2-13-58,/4-18-58 The Pump House consisted of a 24x28foot single-room, wood-framed structure with plywood-sheathed exterior walls 9 feet high, (Neg. No. W-V-239-6) Figure No. 2-42. Page 96 Interior of Station 1213 — 80% Complete.

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