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BCC - i.R.MSaag L os Angelas, September 1 8 , 19$2 Mr. R. L. Adamson: (ec - Mr. j. Reinhardt) Referring to your request that I investigate the nerits of the so-called "Mechanical joint or Si*11” type joint" as sold by Pacific States Cast Iron Pipe Co. (See their catalog #1*4, page 70 - copy attached.) I understand that certain subdividers in Las Vegas desire to use this type of joint in lines to be constructed by them under Rule 9. The following data is submitted with our comments as indicated: (1) Pacific States Cast Iron Pipe Go. (Thone WB-39108 - Kr.,,,_W«bbj--- (a) Practically all army jobs and most of Havy jobs (b) Cask ets pelca imfayd et hiosf Kjeooipntr.ene, a synthetic (c) mPartiecrei aolf p-i Hpaes halvoingn gl itfh®e s• e j.o.in.t s i. s h*,i«g-h*.e*r- than regular B & S pipe of same olass, but price includes gasket, bolts and gland. (d) City of Los Angeles uses this joint at RR cross­ing account of flexibility, etc. (e) PAabcoiufti c7 5S? taotf es. 11C o.p ihpaes .tohled mteoc hcaonnitcraalc tojro,in tb.y (f) Cities of hong Beach, Oceanside, Ontario, Burbi&k and ftll buy bills Joint* (2) Cltv of hoa Angeles - Pent, of Water and Power. Talked to Mr. Gerald P. Cooper, Hydraulic Engineer. All requisitions for pipe pass through Mr. Cooper. (Phone MI-U211 - Sta. $1*2.) (a) Mwehcerhea nilcoaald ijso ihneta pviyp ea nud sveidb urnadteiro nR .eRx.ccersosisvsei.n gsA lso at other points where similar conditions prevail. This joint not used elsewhere, mainly because of (b) Hiots ohbijgehcetrio nco stto. use of mechanical joint except. (o) City pipe lines are laid with ceiBent joints which is considered best if properly installed. It is of utmost importance that cement joints be in­stalled by experienced men as a poor cement join*