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LEAD INDUSTRIES ASSOCIATION
Griyiur BvfMin?, ^ UznfioA Aw h 4 N*w York, N. Y.
JfOT*br 32. 1933.
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If you haw# cot already ***n It, you rill probably b* lntaraatad In a rrport otltlod `reflection Taat* of Cait-Xron Vatar Pip* lll ind 6plgot joint* with Spaciel Bf*rnc* to ball Strancth.* It 1* th* rrport
of an lnTaatlgetlon at th* Incln**rlac iiparlnant Station of Ohio 6tat* Cnlraralty la coopratloa with a conlttr* of th* Aaarleaa Standard* liw* elation and tha Coltabua (Ohio) Tatar Oapartaant h7 Prof. John C. Prior, and pobllahad laat y*ar.
3' Aaonc th* concloalona, th* on* of Boat lntaraat to *all*ri of o ealklnc l*cd follow*:
Judglnc froa th* aetlon of tha harder jointing aatarlal* .
olphor eoapotmd* and Portland caamt - darlnc th* tafta.
t It nay h cenclodad that th** Joint* would har* had x
ctiiln laakac* wall la adwane* of th* tic* of aarlmn
i*.- hall (train, Shat 1*. condition* which can** aarlan*
hall (train froa dafloctloa cannot ailit without flrat daetroylr-c tha Joist a* a watar container. Thl* ceoeltt. lea epplla* to 20-lnch Joint* and larc*r.*
In othar word*. It *a* found that lead robitltuta* would haw* leaked with a car tain daflactlon at tha Joint, wharaa* load Joint* raaainad
* tight with approxloataly tha *aa* daflactlon. Thl* 1* 1 sportant a*
practically all watar aaln* ar* subjected to a certain aaouat of daflactlon
r' dua to gromd *ub*ldne*. and that* teat* Indicate that Joist* aad* with
laad ar* auch nor* apt to raaala tight than tho* sad# with aubatltuta*. Th* ruhatltut** all op*n*d up crack* and *pall*d badly. Tha ruhttltut** t*it*d war* caoant, Uadi t a and Efdrotlt*. Although not taitad. klnaralaad would probably bar* acted th* tan* a* th* othar aubatltut** aa it ha* noch th* am coatpoaltlon a* Uadlt* and Pjrdrotlt*.
Another ltaa of lntaraat to aallar* of ealklnc load app*ar* on P*c
530 of th* October, 1933, litua of Chaslcal aad tfatsllurflcal taglnaarlnc.
It 1* entitled `Bacteria t>**trcy Pip* Lin* la California.*
It (how* that
e*rtaia bacteria attack th* sulphur la Joint coepound* Ilka Uadlt*, pydrotlto
and Klnaralaad, caatlac than to bacoat porou* and fall*
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MenberS Selling Calking leal
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Jorenber 23, 1933
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The report aentloned la th first part of this lsttsr re; ho obtained froa the Engineering Ixporlnent Station, Ohio State Ualrerslty, Colrshus, Ohio, for $1.00. Tbo issue of Cheolcal sal Metallurgical Engineering, referral to, suy ho obtained froa the Mera>-Hlll Publishing Cocpoay. 330 Vast d2nd Strost, Jew Tork City, for 35f a copy and nay probably ho referred to la any library.
Tory truly yours.
x'
Secretary
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