Pacific Gas and Electric magazine . thetrench, the smaller pipeis again welded into posi-tion. Material and labornecessary under formermethods would approxi-mate $, while withour welding process theywould cost approxi-mately $, and withconsiderably less inconvenience to theconsumer, since little time is requiredwhen gas may again be turned on. Figure 6 shows the elimination of spe-cial fittings required under former prac-tice. Large obstructions and interfer-ences occur frequently, necessitating adeviation from the predetermined course;requiring special fittings. Heretoforethese specia
Pacific Gas and Electric magazine . thetrench, the smaller pipeis again welded into posi-tion. Material and labornecessary under formermethods would approxi-mate $, while withour welding process theywould cost approxi-mately $, and withconsiderably less inconvenience to theconsumer, since little time is requiredwhen gas may again be turned on. Figure 6 shows the elimination of spe-cial fittings required under former prac-tice. Large obstructions and interfer-ences occur frequently, necessitating adeviation from the predetermined course;requiring special fittings. Heretoforethese specials necessitated plans, patternsand castings, occasioned disappointmentsin deliveries and then invariably leaked,causing delays and higher costs. Presentpractice requires no preliminary surveysfor specials, for with a welding outfit,when interferences occur, the same pipeis merely deflected around the obstruc-tion and welded, eliminating delays andleaks and installed at considerably lesscost. Figure 7 shows iiioi-o clearlv a Ixpe of. 264 Pacific Service Magazine intcrlVi-cncc in tlie formof an 18-inch water main,with the gas main de-flected and installed be-neath the water main. Figure 8 shows the re-verse view of Figure 7,the deflected pipe beingwelded to the existingmain line. No more com-prehensive idea could begiven the all-round ad-vantage of welding steelmains with the oxy-ace-tylene process. With nolimitations, together with the eliminationof leaks, at practically half the first cost,
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