RIVAL TO FERROCONCRETE.

Dominion, Volume 1, Issue 156, 26 March 1908, Page 4

RIVAL TO FERROCONCRETE.

v.. .-V' -~ ■ ■;, ;0— ' ' ? ANUNGENIO'USINVENTION. tftLV' received particiilars of a rival to 'fcrro-coiicrete' for the piles' 'of iotheiV'sthtptures,' which is be- ■ ginning 'fe.^/%i:3^:'jnt.9r.eat.iii : (bhp..!D.pminion.. This is tlieii fligehiou3 iinvention ;known as. :Lboto' ; Joint. which has coino into use 'in-the United blades during the last year or' two/but 'has! riot ytSQbueri tried'in New Zealand. ■ LockrJoiht,Tipb4f£-pile protection is madc.of cement, and is divided longitudinally. Into""fetyil'ai VeST" whiolrhalves' have key way s' .fp.yiiingja'.scarf .joint .when placed..together 1 'a'ri((" kbyedl s; " 3 The pjp'o is placfed Around the, 1 ; pil3"aud' ; lb(ikecT witiioa key'. Tho joint is' ! i absolutely/.tight so that the'pipe ; 'will hold' tho',-;finest,':san(l. The intervening' vßpftce',.bbtwcenUhc pile, and tho pipo i? filled' .. w.ith/sai«l.','("Thi3 J l!aß''becn • found..ta 'bo th'o ; '' most' pri'dtWHHiillHlfcfUs it in; no way causes M thoipipo to adhoro .te tho pile, but leaves it ■ free• to !settle with any scour .which, may >od6iir''at''thoinHid line or bottom, thus -keep-' 'Utgthu i>ilot fully .under - all con- ; .the",sand lias been allowed to :, ■' stft'tlfc," th'e'\tf/}is/bf;thtf' pipes an? sealed-with „:'a thin coating'of-ceißfint mortar, which pre?. ;V.en;ts^the.nßand- : froro..beiiig washed out- by .'.wave, action-duxing-,a, storm. ,v|. , adchimed for this in''::gVriio\S'''patontl 'is' :r thaF it - affords a/-perf«ct , sccurityKagainst, tho teredo. This post has . never , been' known-to. work below tho mud i: lino.l'flu' ordef-i to live it. must ' have freo ; • aepps?, to vii.ea cwater; ! placing, Lock, • Joint! ; jpipa,-around ,a .filling the annular and- the pile with ' "^4W,'\tlib' 'A))(6rißifty "bompany which is ox.ploiting the ; pipo'cliii&s to accomplish tho ■-"result, as far as 'tho teredo,is coricern'ed, of raising the' mutl'vjine, -or bottom, abovo . tho ' high-water line. only provents fur- ' ' thei"attacks from.tK'd' T terodo, but necessarily ; .kills 'those which 'attaeked the , pile. The coinpany:iicl"ainis to have accom.plisliMl Aho.'.dpstruptipiii of' all teredos in a pile, in from 2-1 to 72 hours. " ■ t . •, ißopairnilg I/oclc Joint J.'ipo at any depth'is easily'accomplished by removing any section which might havo been broken by, accident; 1 placing-.'another'section"around the pile at I tho top of_tho- [ allowing all .pipo K secfion to bo {owercd tho V • removed. U..>.lt ■is..vC]aiW,y l ,J;fet.iJl o Lock Joint Pipo "strengthens with age, and it can be applied ' to,stnicturc»\.;in -uso .without interfering •in • jiy '"wfiy.'. JvjtlT or the uso-of tho ■: /^ti; ii'ctui'o'.'' i ' "'V '' ' .