Ve CHAPTER I!, SECTION 3 and then to a mirror Station 1815 where the . light beam was reflected and picked up at -rermenumumserrr>. Station 1830. Station 1819 was 12-inch-dia- ==" meter pipe which was joined to Station 1811 Qaaam pipeline at the working point of Station 24 and then extended approximately 150 feet beyond © Station 24 to a concrete baffle wall designated Station 1816. An adjustable baffle with a 1-inch-diameter hole in the center was inside of the Station * 1811 pipeline and was located at a point 600 feet from Station 24. Additional baffles at ap™proximate 40-foot centers beginning at Station ‘ws. 24 were inside the Stations 1811, 1812 and > 1813 pipelines with 1314 -inch-diameter openings in the baffles for Stations 1811 and 1812 and 21%%-inch-diameter openings in Station 1813. Station 1814, the junction of the 1812 and 1813 pipelines, consisted of a Y-shaped pipe Figure 2-91. Figure 2-92. Prefabricating Footings for Stations 1811 and 1812 Station 1813 - 40% Complete Page 2-103