Electrolytic survey of loop district in Chicago and electrolysis of water mains . ^ ^..-^.^Z^IZ.^; TABLE OF COHTEITTS 1 - INTRODUCTION 2 - THEORY Origin of ElectrolyBls,Ciismical Action. 3 - RETURN CURREITTS Bonding. Localll; of corrosion. Occurrences of Electrolysis, 4 - MEASURE?,IE!TTS Voltage between rail & hydrant Voltage between L structure & Hydrant. Drop of potential In pipe. Resistance in pips. Current in pipe. 5 - CONCLUSION DATA 20751 i ( ..a , ...< -•?) IlIOfRODUCTIOl^T. ELECTROLYTIC SUR-^/EY ON LOOP AITD. I^IVESTIGATIOIT OF ELECTROLYSIS. The subject of thisthesis was to malce a
Electrolytic survey of loop district in Chicago and electrolysis of water mains . ^ ^..-^.^Z^IZ.^; TABLE OF COHTEITTS 1 - INTRODUCTION 2 - THEORY Origin of ElectrolyBls,Ciismical Action. 3 - RETURN CURREITTS Bonding. Localll; of corrosion. Occurrences of Electrolysis, 4 - MEASURE?,IE!TTS Voltage between rail & hydrant Voltage between L structure & Hydrant. Drop of potential In pipe. Resistance in pips. Current in pipe. 5 - CONCLUSION DATA 20751 i ( ..a , ...< -•?) IlIOfRODUCTIOl^T. ELECTROLYTIC SUR-^/EY ON LOOP AITD. I^IVESTIGATIOIT OF ELECTROLYSIS. The subject of thisthesis was to malce a survey ofthe Chicago Loop District downto\ra., including Wabash Avenuefrom Van Buren to Lal^e Street,Lalce Street, from Wabash Avenueto Fifth Avenue, Fifth Avenuefrom La]<e Street to Van BurenStreet and Van Buren Street,from Fifth Avenue to WabashAvenue, We also investigatedthe sairie district for electrolysisof Y/ater pipes along same nan eelstreets. Curves of various typeswere plotted, showing relationof voltage,current, and differentpoints along the 4 THEORY. It is a known fact that whenever a current passes from aWftter pipe, gas pipe, telephone cable, or most any substance into the grovmd, corrosion takes place and a mere fraction of a volt may produce the cox-rosion. It has been stated thatanything under 1,5 volts can notproduce any trouble, but thisis not true« The statement ismade that water will not flissociatebelow 1,5 volts. This is a mis-take, however, because as currentpasses from iron to ground andthen to iron, and produces corrosion,the counter, E, M, F. is only asmall part of a volt. In certain kinds ofearth, current could leave a pipewith little or no effect, onaccount of the chemical actionwhich neutralizes the corrosi-^eeffect. <*: .vw 6 It is not generallyknown that alternat ing currentwould effect water pipes orproduce corrosion. This is true,however, as experiments haveshown, but only In soil which ismade up of a certain composit
Size: 1397px × 1789px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookdecade1900, bookidelectrolyticsurv00bueh
