ELECTRICAL DEVELOPMENTS.

Taranaki Daily News, 6 August 1918, Page 5

ELECTRICAL DEVELOPMENTS.

NEW PLYMOUTH BOROUGH COUNCIL SCHEME. ADDITIONAL WATER SUPPLY. Tiie electrical engineer to the New s Plymouth Borough Council (Mr. K'.' H. Bartley) submitted to the Works. Committee of the council last night a' J report on the proposals for additional Water supply at the Mangorei. The proposed extension einbraces*the following:—A storage reservoir, werr( across the Waiwakaiho River, a new. tunnel, enlarging the existing forebay,; additional pipe line from forebay to' and additional plant, etc.,. an power-hoase, etc. Speaking generally, the proposal is to draw from the Waiwakaiho at£the .present intake the fulkamount of water'allowed (9000 cubic feet per'minute) and, convey to. the forebay by inew ; ;tnnnel, which will supply ai,stor- : age reservoir, water taken. to 1&V fowbaylfco, «typn»n#sfcei

—.■..._---: ;r'!T lll gaßg'~ 1 »'—»m« ■«'—>!■ <j| supply from tlie present tunnel. M storage reservoir will hold approxim«,l|j ly H million cubic feet of water, wJatK will be available in the event of sag extraordinary demand f« power .'£n jshort periods over and above the JIO amount allowed direct from tEe riijer.V^ RESERVOIR. ';, Eighteen thousand cubic cavation will be necessary to give Wfi million cubic feet of water if utUwH to a depth of Oft and 9ft draw off. %t .spoil excavated will be used to eonstlifci 'the embankment, with a concrete cflfcifi in;the absence of suitable puddling tisJ and to face the slope of the a certain depth as a protection agdfajg.tl wave action. Probably the best ;liiy for the embankment will be along',tfiei middle of the Albert Road. The area of. the land to be acquired is 5 acres-, 6fJ wWich acres will be in, tlie ar§&"; covered with water, the balanee to pa*-' ivide for road deviation, <stc. A& esiimate&or iiftluding,. purchase of ]and,»is £7bR j TUNNEL. t . Approximately 2700£t-«of-.stijnnebJd&l* be'requirla' to Connect wittuHlto B&jjipk; m&hoe. Probably ft tunnel Bjt IftlSßt will serve all purposes,.,and wauTaKSo.; provided with a cpucreteSinvertij, as- «H las a.suitable chamber andjjgaffcatgtMK | •inlet. of TOfe,! "'£B4oo, , ,1 \ tn order to obtain fullialxsuJ!agtMjj! , the maximum ambunt* .-of wStef Mr-' unitted, a weir wSH have to ■ 'structed across the Waiwpfa&bPwßJp \ '.the intake of the present water-ftce. ! "As stone is available in. amjje <Bg&" ' tity,.a plain concrete weir-Ts lat a point 2J olsains below thV'.pPKa®t j intake, where a < is available. A weir iffiSb sufficently high to raise jwitfbe all;Hhat'iis-rehired iapron work son the downstream btob. ,< Estimated cost o£ u fweir, ■. The scheme outlined is to igfr J&? whole of "tlie water in the W^sspaS6>', (150 cubic feet per second"), aM? «s£&■" this work is completed ihcw_ masjfe . iittle, if any, water.in .- the river during the l&w-lcve5^)WJ».( Consequeirtly we may be fecejf D$ j claims for compensation for ftggtffl '>' 'wetter, fencing required wisere ceases to be a siifficienlt bamer 'fine stock, as well as other offiecs|Efc > which may be raised by property—wSfc 1 ters and others interested. v X»ST, BWSPBIN&EIiA&T. . teeserViOir ~ ' ■TCeir ....... .-£„-,—. —uj»-—ni &w'j Exfra tuißinei; tflSiftatdQi, j snares, etc. iPipa'Tßhe .....^«««w.~-.>«-r«3»8D^: iForbay valve?, etc. ~ - '^■>j Possible contingencies, inelrfd&rg ; compensation ...-~,. ..,>••■• 3k. "i Add 10 per cent.. ajlmmistratSon 9HF •* ■Enfflneering, 'sayj JBp / Total ■~y .„.. ,y s In addition to item of«changing over from snipe -^ v . tlvree phase, and to make the schefsi ~ .complete should 1 be included. I shenßl think £2700 would carry the Jftffe ■ through, making, the total estimate ,» £30,117. To make the scheme, complete ;use the Waiwakailio to its mftxHmnri, _ everything necessary has' been mcilttdgSL .in the above estimate, but it does 'necessarily follow that the»whofeiicf-'!«fe , work must be undertaken at one time.. THE*IMIEEDIATE WORE, The estimated coat of the work, fiat ' 'will need to beTrndertaken ai-ont», form- ; . ing part of the complete work, is:—Re- '■ servoir £7500, weir £OOOO, cs.tra 2so , 3t.w.,'alternaitor-anii-tiii!&iiie-£4OOO, ftc i bay and valves £740, possible contingen- ' 'cies, including compensation, £IOOO, add ' 10 per cent, administration £1542, engineering, say, £900; total, £175861 To complete this portion of the<-work-would require about 18 months, ada*if the whole were undertaken it would "ie j ;i quire over two years, and this is ing that a contract could be ' let. further, the scheme includes additional alternators and turbines, .arid ,•, the council is already aware of the lame ,itis taking to getvdelivery of plant si- '. ready on order. It, therefore, appears to me'that it may be necessary to adopt means other than the above to cope \&£h. the demand pending the carrying into ,effect of a scheme as above outlined, ana. ■with this objeetdn am submfitiijg separately a suggestion for the council's 'consideration. PROPOSALS APPRO\O2D. A detailed discussi«n of the 'Scbem» took place with, the electrical engineer, and finally the chairman of the Electric Light Committee (Cr. J. Clarke) advocated going-on with the proposal, if-only .the preliminary part of the scheme em■bodying the expenditure of £17,000, otherwise the council would have to discontinue supplying power, at least, in 'large quantities. He considered it was a good proposition to go to the ratepayers with, and in view of the 'possibilities of further development of local' industries, he moved that the engineer's schemo be approved, and that the Electric Light Committee be instructed. tt> •report upon the details in conneetion<with 'the proposals and formulate the neces-* sary resolution providing for carrying out the whole or any part of. the work. The motion waS'Seconded by Cr. Callia. Cr. Browne favored adopt inj -the 're•port so ; far as the scheme for the expen■diture:of the '£Ujooo was i oncenied. He Ithought that would be a safe undertaking, sand in. the meantime further*testa could be nmdeiof the minimum flowi-of ■water in the Waiwakaiho River. Ho 'suggested the.motion should be-amended fin that direction. i The. Mayor pointed, out that the'Elee- ■ ftric Light Committee would consider .whether the ,the scheme should s -be gone on with, and s then Rjoft , back to the-, council who world decide twhat should be done. If "the-motionaffts <amendedt»as suggested, the eommiitee gvouTd be tied-down to .considering only phat'vpart of-the expenditure 'of too £17,000. Cr. Dearc faworednthe "immediate-adop-"tfi>n«:ofifrthe wiiole scheme. On the motion being-put,-it was-car* ried iuianimously.