Pacific municipalities . tting in ^^^^f ;>;f^;;;^; .^^^that said Company is the owner of large cement works and t^e manufacturer of cement pipes, but notwithstanding this fac. it has wholly aban 242 PACIFIC MUNICIPALITIES doned the use of cement pipes for sewer systems, and uses only vitrifiedpipe, and that the reason of its abandoning cement pipe for sewer systemsis that it is subject to deterioration by reason of being attacked by sewageacids, that it is porous and wholly unfit for sewer purposes. Affiant further states that he is a citizen and a tax payer of the Cityof San Diego, and tha
Pacific municipalities . tting in ^^^^f ;>;f^;;;^; .^^^that said Company is the owner of large cement works and t^e manufacturer of cement pipes, but notwithstanding this fac. it has wholly aban 242 PACIFIC MUNICIPALITIES doned the use of cement pipes for sewer systems, and uses only vitrifiedpipe, and that the reason of its abandoning cement pipe for sewer systemsis that it is subject to deterioration by reason of being attacked by sewageacids, that it is porous and wholly unfit for sewer purposes. Affiant further states that he is a citizen and a tax payer of the Cityof San Diego, and that his only interest in the subject matter of this liti-gation is as such tax payer and citizen, excepting of course the interest ofaffiant from a scientific standpoint and as an engineer. (reorge and sworn to before me, this 16th. day of June, 1911.(Seal) E. \. Winnek, Notary Public in and forsaid Countv and State. Illustration showingthe Failure of ConcretePipe in Sanitary Sewersof Alameda, This concrete pipe was installed mostly in the residence part of Alameda inabout the year 1875. Every few years in places, there was trouble with the concrete sewers. Thedilute acids in the sewage became imprisoned in the concrete shell causing the cal-cium to disintegrate and thereby permit the sewage to percolate through the wallsof the concrete pipe out into the adjacent soil and thereby forming unsanitary,elongated cess pools. Finally there was found to be such a large percentage of the concrete pipe in auseless and unsanitary condition that it was deemed advisable to remove the entiresystem and replace the same with Vitrified Salt Glazed Pipe. At end of about twenty years all concrete pipe was removed and replaced withVitrified Salt Glazed Sanitary Sewer Pipe. Regarding this concrete pipe, the Alameda Superintendent of Streets writes:In 1892 both the Park and Oak Street sewers were taken up and in 1899 theWebster Street sewer was taken up and the old ceme
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