2821 RUCKER AVE 2018-01-02 MF Import

K�rrNdx/J�nluiCfdlmn � 3.6.2.3 Distrib�nion Svstem P�oeline�. TM tame apprwch is used to estimete dam�pe to the disalbution pipdines. Baa�d on nvisw of ths peot�chrical information provid�d, !t is aasumed that the whole distribution syst�m was Ixated in no�-liquefiable sals. Thsre may a f�w exceptions atonp the city ahaelines, but not to any major pipslines. The hiphest tailure rate is estimeted to xcur in AC pips. The second hiphest rate in cest iron pipe. D! performs well in �arthquakes and has ths �oweat rate. Cast iron would have Me rnost number of feilures because of tM larps installed footape. The same assumptions for breaks versus leeks, repair rate, end cost are used that ers described for tronsmission lin�3s. Assuminp additional five rapair crews are available to work on the distribution lines, and that each ons would work a 12-haur shift, it would take: M6.5 - 13 repair days, 1A7.0 • 4 repair days, and M8.25 - 13 repair days to repair the distribution system. Assume half that time to have the majority of tha syatem functional. � 3.6.2.4 B�gpr4jt�. Ground Reservoir Noa. 2, 3, 4, end 6 are asaumed to have been evaluated in accordance with dem sefety requirements and will have no sipnificant damage. P.ecent addition of covers to some of these reservoirs ahould have been done in accordance with strict UBC requirements. The other three resenoirs are evaluated usinp TCLEE Demonstration Project (ASCE 1991) es an informetion resource with modifications proposed by Ballantyne in evaluatinp Portland's water facilities (19901. Reservoir Number 1 is assumed to have a high heipht to diameter ratia and to have been built prior to earthquake standards for tanks. Thesa standpipes will liksly not be operabfe for the M6.5 and M8.25 scenarios. The Cssino Standpipe, while constructed before recognition of eerthquake standerds for tanks, has a lower height to diameter rotio. Tenk enchorepe to the foundation was not identifiable in a l 3-52 906014.00