upr000335 175

• ••Repairs t© Water Lino at Las Yogas,,. f M U J # RO;iS QLCUC* Los Angeles, Jan, £l,192o File 6 1 5 ' I tore ycrar letter of Jamary 2oth, file 59-pp, to which ms attached letter fron Ur, Bracks© regard Lip pipe lino at Las Yogast I fha of mod pipe shioh Las been, ordered fc iatanted for replaci^ a libe anoint of vitrified pipe running westward froa tin west end of the concrete fe.ia Jl,K to . encaaed vitrified pipe* 'fills aaount will oxteaj|/wl this abont 500* of the- spri% dsnreifeich part It is intended to allow the plain vitrified pipe to resale, there being practically no pressure on that part of the line. as yon knew l&e tile pipe was arantes to withstand an internal won©- lag pressure of 30 lb# per sg, as failed to withstand pressure very laneb less than that, hence we < apply theory to Seteneine the strength, of this line, 5 bat being tJto < w isorely a guess, and one ibsk*s guess is m good as another®, However, I would point out the line has now been in 1 service nearly two years sad has passed through two winters vitfeout failure. As tha line is ©osmosed of ssstais not affected by tirae or cheiaicale £ H . X-UJ1 there is no reason to believe it will not o on time to $ erve the purpose indefinitely, So replace thin portion with aejpod pipa will have no affect upon the pressure, Ihile there are a few leaks in the line they are insignificant and in no-way affect the pressure* with redwood sdll cost about .#6000, She portion of the wood lia© between the Gostp&ay water tank and the Gity Water Worts, about llho*, which was installed several years ago will have to bo replaced within a very short tine, and as it passes order all of the yard think, whan St Is replaced, it should be with cast iron. As to the advisability of repla^hg the concrete encased portion Tmre Is about &590* of the concrete ©mused pipe which if replaced A|/3W ilagr, M of I