Electrolytic survey of loop district in Chicago and electrolysis of water mains . aRmdohiHHTlXVXS OFXBCHNOLOer 47 VAU EUKEII STREET, V/ABASE & E I 2: 35 .6 .675 2:36 .9 2:37 .5 .562 2:38 .3 .337 2:39 .5 .562 ?A^ .55 .618 2:41 .25 .281 2:42 . 6 .676 2:43 .4 .45 2:44 .3 .337 2s45 .4 .45 2:46 .5 ,562 2:47 ,25 .281 2:48 .5 ,562 2:49 .5 ,562 2:50 .4 .45 2:51 ,55 .618 2:52 .30 ,337 2:53 .4 .45 2! 54 .7 .787 2:55 .6 .675 2:56 .3 .45 2:57 .45 ,506 2:5P- .5 .562 2:5d .5 ,562 2:60 .35 ,393 3:01 .75 ,5o6 3:02 ,35 ,393 Length of pipe - of pipe = 8 ft. resistan
Electrolytic survey of loop district in Chicago and electrolysis of water mains . aRmdohiHHTlXVXS OFXBCHNOLOer 47 VAU EUKEII STREET, V/ABASE & E I 2: 35 .6 .675 2:36 .9 2:37 .5 .562 2:38 .3 .337 2:39 .5 .562 ?A^ .55 .618 2:41 .25 .281 2:42 . 6 .676 2:43 .4 .45 2:44 .3 .337 2s45 .4 .45 2:46 .5 ,562 2:47 ,25 .281 2:48 .5 ,562 2:49 .5 ,562 2:50 .4 .45 2:51 ,55 .618 2:52 .30 ,337 2:53 .4 .45 2! 54 .7 .787 2:55 .6 .675 2:56 .3 .45 2:57 .45 ,506 2:5P- .5 .562 2:5d .5 ,562 2:60 .35 ,393 3:01 .75 ,5o6 3:02 ,35 ,393 Length of pipe - of pipe = 8 ft. resistance of 8 inchpipe .006 resistance = .897 ohmsCurrent flowing Eastward. 1.,. maxivuTM OS tbchnoioox-n«i If r. 48 FIFTH AVEITUE, MADISOIT & MOLTROE. APRIL 22nd, 1908 Tilts VOLTAGE I ljl9 .005 .004 1:20 .0065 .0052 1:21 .01 .008 1:22 ,006 .004 1:23 ,006 .0048 1:24 ,007 .0056 1: 25 .0065 .0052 1: 2G ,009 ,0072 3. : 27 .006 • 0048 1:28 .005 ,004 1:29 .006 .0048 1:30 .0065 .0052 1:51 ,009 .0072 1:1^.2 .0075 .006 1:55 ,0095 .0076 1:54 .008 .0064 Length of pipe =? 208 of pipe = 8 ft. resistance of 8inch pipe = .006 ohms,TotaJ. resistance = ohras Current flowing Tlorthward. 49 ELECTRICAL RESISTANCE PIPE 12 FT. LOIIG IHCLUDIIT:^ Joint diam. s 6 inches RaE/la ,099 ohias resis per foot- .008 25 .062 n .0903 7 8 » length4 • 6 length2 4 length .0855 .eai .039 « .00516 00762_5C .2305 .ooYeY .00111 .00202 .00382 WITHOUT JOIITT 4 1 length ,000395 n 7 3 length .000567 n 9 • 5 length ,000617 n II .0000975 .0000753 .0000655 5 ( .0002585 ,00007 9i AVERA:-E JOIITT foot RESIS ,00767 ohms. 50 REFSREilCSS. EHGIITEfl]RIITS IITDSX Ui
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