Document 3QQEwoR4L2g04rJmBngyyzYq3

LIA17195 LEAD INDUSTRIES ASSOCIATION, INC. *tt MADISON AVCNUt NCW TONK IT, N. %. ga^jgjLnaa !KBgrr.PtTrjpBgn c^yirrrz ms t is q St, Louis, Mo, April 7, 1963 A setln* of tbs Industry Dsralo^ant Oeandttes of tbs Lead Industrie# Association, Ino., mu bald at lOtOO A.X. on Saturday, April 7, 1962, tl tbs Cha#s-P*rk Plus Hetsl, St. Louis, No. 3. 3. Lsnnoo 2. 3. SMsrt, 3r. T, B. Harises A. 3. Bopklns 0. A. Larson Ivor Tboapsoa L. L. Taylor A. 0. MoIff 0 C. A. Inns C. M. LePsrrs B2EBSCX2B Assrlcsn Metal Cllnax, Ins. Aoeriean SaMltlng A Bsfinii^ Os. Aneoonde 8lss Go. Tbs Broken Kill Associated tbilt MS Pty. ltd. Banker Bill Co. Csrro Solas Corp. Ccsfrenia Klnera Assroo 8.A. Tbs Consolidated Klnir* and *WltirA Os. of Canada Lisdtsd St. Joseph Lead Co. Colted States Saslting BaflsijQg and Minin* Co. J. Talllaquos Z. L. Barker V. G. Rlsooflk A.P. QLraitla v. p. iaiks nz B. V. Haltaa crop wxaao Assrleae Metal Cllaox, las. Csrro Carp. Consolidated tine Corp. (ERAS) Xtbyl Corp. Basoond Lead Products, Zns. C. Tennant, Sons A Co.,'A*aoia BBAS) crasa J. K. Plsbar B. 3. Kirby Lewis 3. Ooodfrlsnd A. Tsrsdy Armcxsr Aaaaaroh Povdatien Electrolytic tine Co. of Australasia. ltd. Lswia 3. Goodfrlsnd mA Associates 1st.Italians Plostoo s tlnoo Milas Q f W^a!Wf* ' "JJI'i1 - 'JJMJ-JWI !'! 1X*"' ' "OeeOWWaer*"1 HIT r . -ppm ^ w, .yeeii UMM9'' yw ':-Tpii^iti.W-l'Jp.lll'Wp1w.i)*i -W.-oA. Ind\uti7 Development Comaittee Meeting Xlnuiee wwrifffg 'jm>r. Bgn egpi 'i'" LI A17196 April 7, 1943 ! am i t Robert 1. flegftld, Executive Tloe Preaidant, Secretary-Treaeurer i} David X. horcina, Aeaietant to Secretary i 5cfarad* 7. ^Ltir*ever \ i j A. X. Cook 4 8. E. Iok L. lettlw :i ` The eecretary reported * qoonm u preeeot. The chairman, Hobart L. tlegfeld, pradeWd, end the eealetant to the eeore tary kept the ilaitw. tb edmetee of the prtrlooa aeetii^ of Xcrrwt-iw 28, 1961 ware approved. ETPCKT Of THE ROttf-CB DIRICTCE At the requeet of the chairman, the reeearefa director p ae anted e detailed S report of the etetue of the varioua reeeerch prcjecte, e per Exhibit *A" attached, i reported by L. tattler, SJt.F. Laad fer Soond Attenuation la Archltectcre - the comlttee rmqneeted ooplee of M tha report cn thia eubject preaanted by lode S, Coodfrlend, herewith attached a* 5 f i Exhibit Continue*!* Carting of Sheet Lead - The reeeerch director rerleeed the propoeel eubdtted by The Broken Hill Aaeoclated Smelter* Pty. Ltd. for farther development work on the ooctlnuoue aheet lead carting machine. the oort oold be 89,000 for one year1 effort and had been reelreed end approved by the Technical Steering Ccandttee. A motion to approve 89,000 for thle work vme Made, eeponded and aaenlaoealy carried. i sag: g mrenoMi Amnna, Leed fprSo^nd AUenaatlwi la Archltet^re - The chairman reported tha* the . r*rch report on Load Tor Sound Attnu*tloo 1a Architecture would eooo be ittil* eble to hie for editing end printlrg end tht he evtiaeted the ooet of printing nod distribution et Around 125,000. 19 Thle tfeoust, he *t*t*d oould be eeoured frt* the 1962 bodget M followot ppfl^weee"ew<eneee^w>*e^ei'e-.i, mi-- wwirmww'--.J m iummamiei VV ' JflV'JJ lUP'^P '! W m *rnm. m imvm'vnnr.mt** -rw* Ifi&iittjm***' lpK . iwawim'JE; ,mMi ' LI A17197 J 1 Industry Developnnnt Ccaadttee Masting Minutes -J- April 7, 1962 r Q i Included In 1962 budget for publication of this annual Fcstporing publication of c m of three bulletins In tadget fron Contingency tad $7*000 $*000 1$,000 ,i TOTAL $25,000 ; A notion wi thereupon Mi*, h o o o M and unaniaoualy approved that $25,000 aecured aa outlined above, b* aat aaida for jrlntiflg and distribution of load for sound attaouation publlcatiooa. ppwgngr.cr. .'i m k snSLur*; The chairman raportad that tha flrat edition of "Load Abstracts* prepared by tha Laad Development Aaaodatloo, Graat Britain, had baao distributed by L.I.A. to lta Berbers and libraries of technical sclleges and universities. 8a raqaasted that (2,000 bs taken fren tha Contingency fund to lncraaaa tha --titwg lint. A notion was thereupon nada, aaoendad and unentnoualy approved that $2,000 ba takan fron tha 1962 Contingency fund to lncraasa tha diatrlbution liat for tha "load abatraeta.* Tha ehairoan raportad that it will ooat roughly $2.50 a nan par year ta dlatrlbuta tha *Laad Abatraeta* and that parhapa a subscription price of that snount could ba charged. At a question, tha chalrnan rapllad that tha Association could distribute tha "Laad Abatraeta* free to thoee cooperies and indiTiduals who wxild ba of definite veins to the lead industry and to othera, of parhapa ^sastionabla value, charge a subscription price. * It ana tha ocaslttee'e opinion howrar that before any such action la t^caa that legal opinion ba nought aa to tha validity of free and paid distribution. m u*s o t , ; The chalrnan reported that tha nsthod of reporting pig land aalaa etstlstli to tha Association and to tha publication "Metal and Mineral Marietta" differed ecewwhat and ooeaaionally lad to tom eonfualca as to tha exaet aalaa la aty c m nosth. After sons dlaouaalen, it was tha ocadttaa'a opinion that this ba tv>T* for future discussion. Thera belt* no farther business, tbs wasting adjourned at 5 TA CMBiKMf A**irt*nt to Socrttor? yiprgw >sh s'm iwppigwwwpsswawnwpwsw^aa^sns's n." n u mt iU **% J***,- tsaaaaw.yt* 'i*w 1|iiafrywee aw ft -owy n; imwiwowi. i'W'f** WI(BI>;!Hyn WMWWBWI LIA17198 1 i ' i 1 a i Appendls A TXPkJrXX) KSSZAKS PBOORAH TTSSE/TATim i' Me oeatlng of tha Ttdurtry Drralopoent Oonaltt#* k m bald to ptndt a alor exchange of Ideas between the oocsarclal tad technical pbaeae of the Ecpasied Reeaarch propria. It la believed that only through thla eloee exchange of ideaa and dlacuaaloa of the raaulta of the research can a ffactive comrsU.ilcation of theia technical development# be achieved. Mia Ml tha flrrt auch starting bald with thla objective la dod. Pollovlng la a dlaeao* aloo of tha toplca oororad. c e b o c a l rsssAxa lC-lB-6? A PuadaaectAl Btudy of Organolead Cbeairtry, Orgaalach Qteolech ^artltuut, T.1.0, Hr. Olraltla rrrleved ttaa cbasleal raaaarcb progress and reported oo tha axoallant progress of tha T.1,0. raaaarcb oo orgaaolead ccauxrunda oo cor pro>ect LC-lfl. ia>ch interest baa baan ahovn In bexaphasy 111 lead which bu baaa synthesised by T.I.O. aad waa being tartad In fuagleldaa aod aa PTC etebl11 cara. Beraphenyldilesd >u alao of apadal value In aerlne palnta bacauaa of lta apaclal ability to derate ooetlaioualy to the eurfnoe of the paint aa It la being abraded and thua ratals lta bloddal properties. In lta applloatloc aa a etafclllcer for polyvinyl chloride plastic*, the onagwumd waa added In the aaouot of ooa to three proast. LC-g8-60 Oraaaolaad Cbadatry, Quartaranatar hateerch and aaglnearlng (Xc.-anri A parallel progre* of raaaarcb oo crcaaolead ooapc*iad* la balag aooductad at tha ^jartarnaatar toaearcb aad Engineering Ocwaaanil under our program LC-2. OoDtaeta bava baan aad# with tha 0.8. reportnant of Agriculture and other aganciea for tba teat lag of our narvly developed orgaaolaad K^oada. It waa suggested that oadarw of tha HE feel fra# to request eaaplee of oavly aynthaalaad eoapounda aad feed back to DP Inforoatloo and raaetlaoa of tba lndurtry to this raaaarcb to act aa guide* to further actloo. 1C-19-61 Load Qoapouadj a* lubricants and Lubricant Addltlvec, Ethyl fcrgo^tloe Obder prograa LC-1>9 lead eaopounda aa lubricants and lubricant additive* war* being Investigated by Ethyl Oorporatloo with tba ob>actlra of reducing tba wear and friction between aeterlel*. Dr. Olraltl* described a four ball lubrieast tasting r*~Mnt dealgnad by Ethyl Oorporatloo aad tba raaulta of teat* parforaad with thla oacbla*. At JO^C, axoallant raaulta ware obtained with dlatbyllaoddlehlorlde aad with trlartbyllaadhroolda. As a result of tba taste tdtioh a Isolated eervloe ooodltlooe, it 1* 000sludad that tbaaa two ecspouad* greatly lncroaaa tba aanric# life of lubrloatlng oil* provided that tba lubrloant* oparata at a low teoperatura (JOC). At blgber taoparatura* (lo C), tha eoapouada bacoaa unstable. Wa bava therefor* an axoallant lolloatlon that this general elaes of ooopounda la mrtb lrrreet.1gating aod that oonaldaratloo b# given to low te^tereture applloatloc* for tbaaa eoapouods. '"WUWJl MIIIIWUL' wsr w*w i N 3391.01 --------- *""' LI A17199 --. . nyi -*. It It of lntercat that the hart acc--irglsily available lubrloetrt additive tested was a Hd c eoopouol which fart battar parforaaaae at tha higher taaperatursa caoountarad 1b scat aarrloa applications. KTTAIIPTOICAL KESEABta IK-16-62 Load for touad Attenuation, lovia 8. Ooodfrland A Aaooclatoc Kr. Ooodfrler*l cf lowl* Q. Ooodfritad a Aaaoclata* diacuaaed tha axcallent prcpartlaa of laad for aourxl attarwatlcu aad tha great narkst potential avail* abla In thl area. tha sort obvloua aartrta vara la raaldectlal construction, hotels, Industrial a<7ulpe*ct enclosures, and offloa partitions. Kr. Ooodfrland alao awphaslted that It waa rsry important to bclrtar all aalaa afforta with eoapotsct atiglnailing aarrloaa if tha load industry la to succeed la developing thla aarkot. A separate report of Kr. Ooodfrland'a talk la attacbad with these aloutaa. In swaary, Ir. badtke dlaeuaaad tha lsg>orteoee of our prograa 6a tha N Of laad for aousd attanuatloc and oc tha aeceeelty of educating our repre sentative* is what can or eanoot ba dooa with laad. It waa of street laportaaee that our flrrt lnatallatloca ba both aooooaloal and efficient and that results of nald observations ba fad back to tha E55* for guidance to farther research, thla progrea baa now becoaa ooa of application ergioearlng and lnduatry aunt la^laaaat tha raaulta of raaaarefa with proretlon and aalaa. Z& tha oouraa of ensuing discussion tha following rrwrte vara Includedj It waa ootad that ahaat laad attarlal waa currently available at a ooat of i4 *bova tha prloe of pl laad but that apecial cara sort ba takaa to avoid axnaarlvaly high oosts of tha finished aowad attenuating panala. tachaloal apaelallata aat ba aada available to onraiara to advlaa aad Instruct oe tha proper use of laad. It waa agreed that eduoatloa la thla era* rest ba a Joint effort by tha Industry and tint plana ahould ba foraulated idaat each coaguay should do aad what the Laad Indurtrlaa Aaaoclatloa ahould do. It waa suggested that laad roller* ba Invited to Join tha training prograa and to aduoata tbalr representatives la aouad attaouatioa. Publication Of tha locustleal Laad Hanual la expected to take plaoa by September, 1962 and this aaaual la expected to ba tha first atop la providing practical Information aad data to archltoeta aad contractor* on th* application aad o mi of load aad laad product* In architectural nola* ooetrol. It la la* landed to laaua perlodle eupplewnte to the aaaual which will diaouac aaw davalopaant# as they ^wooaa available. A daclaloe waa aada by tha ooaarlttoe to bold a seating oo June 1A to dla* cusa tha subject la detail aad to formilat# definite plana aa to tfeet course of action waa to ba takaa. ""W41 " Bsr'ss" -w m BBgag rwtrr m '. * itwi' rr&awg^njiipng j n > wcawp<;.^jwi.rni\hn9mt , ^.ny>.T ,j> awrf.mniu LIA17?0C H J i! liiJ.,ii I I I W 'W-HIWWII L. i A 'i ' ! 9 J- tX-7-61 Lead-As'oee to* Pads for Vibration Attenuation, levls B. Ooodfriend U >jtx;u<i la the ar-ta of leed-asbesto# pads fir vibration attenuation, Mr. Ooodfriend reported that these pads will soon be subjected to controlled tests end that performance neesuroaente on field Installation* vlll be Bade. A* a result of further studies, It ha also bees established that railroad vibrations which, la the pert, birr* been assumed as cocslsVng of low frequcoqr elb retIocs, bare pov been found to oooslrt of puleee of *><g frequency vibra tions. IX-9-&2 fiber Reinforced lead, Araour Research foundation Mr. Usher of Araour Research Foundation reported that this progress bee b o w beooae a product dprelopoent progres and that oev comerc1*1 applications for this aaterlal are being sought for as lead solder tepee aad as fiber rein forced lead babbitts for frlctloe or sierra bearings. Much lsterest la be In* shorn by tbs Association of Aaarlcen Jfcilroads la fiber artel reinforced lead bearings which can show great durability without lubrication. Aaocg new appliestlooa for lead tape the following vlll be invest lgBtodr 1. For Joining of pipes la pluatlng application. 2. For automobile repair, vbere shops could use conaerctally erallable lead patches to slnpllfy the repairs on rocker panels and elallar Jobs. 3. for Industrial aclderlsg, vbers can hours to do the Jobs could be re duced, while nore lead would be eoeeuaed by using tap*. h. For roofing tils, which oould be aad* to sell for an satlasted ooet of bO^/eq.ft. 5- For various fern applications. Further research oo fiber reinforced solder lead vlll Include the follow- lacs 1. Consideration of various reinforcing aaterlal* Including steel, copper and copper alloys. 2. Testing the strength of varlcu* Joints Bade vith reinforced Bolder taps. 3. Evaluation of the durability of tape under nornal vwethe ring conditions. b. Distribution of sasples for evaluation to cna--rclel organisation# such as Sear* Roebucks. Work by the Buyek Oorporstloo is also proceeding on the production of fiber reinforoed solder tape. lead In 0rente >nte rials Mr. Vllka of Baaaood lead reported on the esployaent of lead la earanla aterials and noted that toxicity, which baa been tb* prla* probl*a originally, baa been e HalDated to a large extant by proper handling astboda and by pre cautionary Beasures. Nr. Vllka etated that the Initiation of fellowship progress and the consequent contacts with professor* and fellows, have been very useful in dlssexlrating Info nation oo lead and have resulted In Increased use of leed In glass aanufacture and for electronic application*. This Increase UJMI'-1 leaeu *w-w, v funppi, 9K.'mKyswtmj.mt.fegpri*s tss W -1W-. WP-^v 1'Mgg P fffW Iip p p iffip p iiW W y W M 1l i W'M!) 'WWW i pi | l | | iin p n ip i n 'w w w w" wm iP L. . L 1 ' t f w*wmo ** m**my* f ff mw w w b w *Wv ***< ******?''*'& LIA17201 o i i i i " - . i j j 4 -h- la tbs uae of lead for ctrulo neterlal* his taken place la spit* of greatly lncreaeed leporta of ruch oaterlaia fries abroad. lx vac pointed out that lead wee the only aaterial >Ailch oaxea It possible to fire and glete in ooe operation and at th* aaas t!oe to perform the operation In only one and ooe half to three hours which la neceaeary la the new faat-firing ceraslc technology. Kr. tlegfeld astieated that lead ceramic products salat la the Called 8tetee here Increased by about 3^ and that the narkrt potential for lead (lasea for eosaalllng aluatiaua cay be ertlaeted at 3^,000 to 60,000 tooa per year. D.K, Ooctlnuoua Casting Proem* Ur. Fedtka reported that a proposal had been received froe the fcoken Sill Aaaoclated {ksalters, Tty., Ltd. to oootiaue work for ooe year ce further develop eat aad leprovwaent of the etfMie for the oootlsuoua caetii^ of lead ebaet directly free enlteo eetal. A eotioe waa eada by Mr. Seert to approve the 2BAS propoeal at a ooet of |9>000, eecooded by Mr. Tbcapeoa aad uaaalenualy approved by the or--lttee. IH-8-61 Puodaaectal Investigation of lead Powder Hetallarpr, leasee laer P->i.ytectol: Institute Mr. Xck dleauaeed our reearth performed la the area of lead powder Metal lurgy and reviewed the reeulta of ereep teeta oa oeveral load alloy* ifelch were developed la thla program. Mr. Settler then reviewed a propoeed Method for the production of partieslate lead aad tine aad lta c-jcreraloc to wrought product#. A brief deecrlptloo waa presented cf the equipaest required ad of the operation of the prooeaa. A review of eetlaated productloo aorta showed that, excluding plant overhead aad eert of sales, the productloo of particulate aeterlal froe eoltea lead would be 37^/lb aad lta eooversloe to wrought product* would amount to .$2^/lh. EACHCCBIXICAL RESIAJC1 12-36-61 Blgh Speed Plating of Lead, Qrahaa, Savage A A*eoclatee, lac. Za the area of electrochemical research, Mr. Cook reported ae the eatlafactory progress of tbe high speed plating prograa of lead aad that sables were new being distributed tor teetlag of their oorroeloo resistance. The reeulta of theee teat* would be published ae eooa aa they becoaa available. A dlecuasloo followed oe the desirability of patenting the eetbode developed aad the co--ltteo took the view that, laatead of patenting, greater benefit would eoeue froe a dlecloeure of the reeulta aod publication la technical liter*taro. y-y-6l Antlcorroelve Properties of Lead Plgaegts la Mater Reducible Tvrrous H-tsl prlners, 7h Ingle-HcLsr Ocanany R-V-fcl The Use ofTead Pignecta la Air Drying Water Reducible falate Tor Wood, Tus bsgle-Hcher Coopany Kr. Oook also reviewed briefly the progree* of the prograe oe lead plgneota la eetal prleer* idileb waa proceeding eatlsfactorlly aad on the lsveetlgatloma of lead plgeeata la water thlnoable palate for wood about which little oould be reported at this tlee. There la clear ladloatloo that lead ooapouada reduoe th* talnleg of paint by wood exudations. rr  AUBVSCOKr - eliM+niey--WM' ^ ' ' MW.wy-^l^ L I A172 02 L j f 5- | ZX-^&-62 An XPTtl<cticc of glctrochaieI Hclih for ring, B># ) OoseoAloat*! Kitilsj.fc toeitiaj Po et *.::/ cf , Lid. Dr. Fftdti dlrtrlhuted ft copy of th* lloeoM ftgr**Mat oo ti* OomAaoo proe*e to tb* caer.itt oe=br for rrrlrv ft&i reported ti*t Inforaetlos as the protM i d pv reftdjr for releftee to the prM. I ADJOUHBgJff ! Tbcrt twice d o further taslceM to OleeuM by tb* ooeelrte*, the eaetl^ y*. mi i .iHQp ijii *fcs* *wfiiiwiitfj<.i^.'Mij,i '*yiP!f.. wrgy.wi^ l_ r ^ Amsaac 1 i* io LEM) IN ARCHITECTURAL ACOUSTICS A Progress Report to The IDC I 4 \ Lewis 8. Coodfrlend Lewis S. Goodfrlend & Associates Little Fails, New Jersey r ': I am here today to sell you gentlemen on the Idea of wiling more lead. This is not as ridiculous as it may first sound. I am more convinced today than at any time in the past that lead Is the most elective practicable material for architectural noise control. It can provide considerable increases In the sound reduction of many conventional building partitions. If lead is de signed into modern building products as an Integral element of the product, it can produce spectacular results. The theory behind this was first presented to L1A in the Bolt Beranea U Newman report later published by LIA under the title "Improved Sound Barriers Employing Lead i-.. i l: :i However, the key to the practical use of lead, in tMn sheets, remained r hidden in the theoretical approach and Its complex method of application. As cur own work progressed, we began to Illustrate the differences that could be achieved with various common building materials using direct lamination. These results, later verified by laboratory tests, show great possibilities using leaded wallboards. In the closing weeks of 1961 we were finally able to pet together a graphic picture of lead's superb sound isolating capabilities. The first SLIDE shows bow 3/32" lead laminated to three different thicknesses of plywood gives higher sound isolation In the critical speech privacy range, and much higher average TL and Sound Transmission Class at a just acceptable marketing cost. On the slide, you can see that adding only 3/32 of an inch of lead to a single sheet of 3/8" plywood increases the TL to provide better sound Isolation than la required for most office partitions. To work with conventional con struction using 1/4" or 3/8" plywood we can use 3/64" or 3 pound lead lamin ated to the thin sheet plywood and still achieve the desired TL with sheets nailed or glued to each side of wood studs. Ton can get a 5 to 13 decibel increase tn TL using 1^3" lead lamin ated to moet common building materials. As to our other test and field results, they are all of this order of magnitude. Using 3 or 4 pound lead can provide similar marked increases in sound isolation, but the application must be en gineered with care since many mechanical factors ar* at work to *ninimie the laarifljjiMUiiin hnajaiftwiaiMtoM ^aflBttf-.aenwaw VWt,,, ^ 3391.02 -2- gala where light-weight lead U used. o Before lookirv ahead, I should like, briefly, to review our work to date. We have developed a aatisfactory lead lamliiting technique suitable for both factory and field lamination, and we l.avo examined the architect's and manufac turer's attitude toward use of proposed leaded building products. We found little enthusiasm on the part of most manufacturers whose product Is told to architects on a competitive-bid, first-cost basin. We found much Interest by fabricators of materials such as office partitions which are sold on the basis of noise-reductionteat-dala, and we found considerable enthusiasm from architects, all of whom have had problems wtth noise. We have reviewed a variety of problems submitted by the L1A Expended Research Program and we have assembled a manual on the application of lead In Architectural Acoustics. This manual contains much not related to lead, bat which is required to show the architect how to achieve the fullest benefits of lead by preventing flanking paths of sound transmission, Many non-leaded par titions are shown so that the considerable improvement offered by leaded parti tions is Immediately apparent to tbs architect. Now for a brief look at the marketing situation. An architect will make use of any building material that provides tbs required noise reduction. Tell him that leaded wallboard does the Job and ha will use It in his designs: - but it will never end up in the finished Job. The con tractors will take ccc lock at the plans and tell the architect and owner it will cost ten times more to use the leaded wallboard than plain wallboard with glass wool between the studs. He is sure that that works because ha always uses It and It's cheap. Well, It Is cheap, but doesn't work. The owner doesn't find this out until It Is too late. At present the price gap between pig lead and finished laminate is considerably greater than It should be. The conventional laminating fabricators use giant presses and must write off the equipment cost. Most of these present laminating people are x-ray panel fabricators who charges mark-up of 3 to 5 times. Now the contractor, who buys the panels from the laminating fabricator, knows that they are somewhat heavier than ordinary wallboard, be has never handled them before and doesn't know how to figure his fastening cost. So be doubles the panel eost and then adds on his usual labor and overhead charge. This is a factual account of two typical cases. When the architect gets the bids from the contractor, the lead goes out. The owner suffers, the lead industry suffers, the architect Is blamed for a noisy building, but tbs contractor; he goss off feeling be has done a good Job, has savod his customer money, and has given him a quiet building. Although lead is good it will not solve every problem - a oew muffler Is not the remedy for worn piston rings. This means that every application area or Job has to be sized up by the lead salesman or supplier and screened .iu w iu .ij i 1.111 I if up w t ,p i ' " rwwwwry'ewr imtwmi.i"pg"wumi innmripmuwi ffft.1! .MWPpMjlJi HHW JW W!(PUU,J.I| -- ------ LIA17?0t L J* i for appropriateness and for flanking paths of sound transmission. 0 We have reviewed many projects including a few for LIA where the Improvement of the TL of a wall would have been useless. In one case, a bank, the walls were adequate - they just did not extend above the perforated metai celling. The sound travollod through the perforated metal and the thin glass -fiber pad, over the partition and down into the adjacent room. In a large electric equipment plant, the boardroom was adjacent to the lobby waiting room. You could sit in the lobby and hear the board quietly dis cussing the company's most confidential matters. The wall which was poor to start with, had been improved considerably, but the clarity of boardroom speech In the lobby was still excellent. Two flanking paths existed: the thin, hollow, snap-on plywood base, and a continuous crack at the Intersection of the partition with the exterior masonry block wall. Io Another example is the large state office building where the sheet metal partitions were blamed for the lack of privacy between the Chief Judge's office and the Commissioner of Labor's office. If the Commissioner's telephone rang, the judge answered his. V'ben a labor delegation knocked cm the Commissioner* outer door, the Judge's secretary went to her door. In this building there were over 20,COO square feet of metal partitions, subject to similar complaints. First of all, the partitions only ran up to the perforated metal pan celling. Then there were 1/10" to 1/5" cracks at the meeting between partitions and building columns, of which there were many. Finally, there were large gaps at both the meeting with the window mulllon and behind the heating convector covers. Whan all these leaks were closed off, the partitions turned out to be adequate. Adding lead would have made no difference here. This should easvinceyou that lead must be applied with care. Careful engineering, and I mean engineering, not a salesman's selector chart, will per mit the application of lead to a broad range of architectural situations, industrial equipment housings, and office partitions. But, you cannot Just roll out the lead and hang it on the wall. Every lead sales-engineer must do an engineering Job on applying lead In individual architectural projects and In mass-produced, mass-market products. The first applications are your critical ooes. They must be appropriate areas for the use of lead. We should be able to get follow-up Information from the user on the results, to check both our design procedures and our ability to convey the design requirements to the customers' engineer or architect. Every Job must be done right. Each must bo a showpiece for LIA. Selling large quantities of lead for architectural purposes will be made easier by good eyecatching examples of successful applications. These may not .vmm 41 nwiiiig'ijiiij si ijaiap. llgl'h I  ^igJBWWff?' nm-amw yi w^wrww'jj .in*>y mq*3**X`*r4prm+* LIA17206 '1*r* I ' 'IIIPBIP be the most economical Job, but thry will help to improve the marketing atmos phere. The Manual on Lead In Architectural Aooustics will be a fuide and will yield the soluucn of many simple problems. However, if a salesman goes to the Manual and picks out tho right numbers-. - for the wrong answer, it will perman ently destroy a segment of your market. 1 should also like to comment briefly on the specific, large potential market areas. The lour greatest potential arras which we see at the moment are residential construction, hotel-motel construction, industrial equipment enclosures, and office partitions. In the residential field lead, laminated to low cost materials, will pro vide sound isolation not achievable even by expensive construction techniques only by space, the most expensive construction commodity. Lead-laminates can make toilets private, whether In bungalow, ranch or multi-etory construction. In motels and hotels, leaded-panel partitions can provide the privacy of the 8" masonry wall In only three to four inches of thickness. This is unmatched by any other practical panel material. In medicine cabinets it will remove the classic leakage path for sound in both multiple dwellings and hotels. In industrial equipment enclosures, lead applied by adhesives or double coated tapes can eliminate both noise annoyance and noise hazards by adding o damping and increasing the Isolation of the thin sheet metal walls. On one pro ject we enclosed, and suitably vented, a portable teletype machine. The case was made of ,050" steel and .050" lead. At three feet you can barely tell that It is operating. The same can be dons with fans, air conditioners and business machines. In the office partition field, the standard partitions sell for about $ 15.00 to 518.00 per running foot. So-called sound isolating office partitions go for about $ 35.00 per running foot. This includes stuffing the base and the posts with glass fiber. Partitions using lead-laminated steel panels provide more sound isolation than can be achieved by the premium partitions and at a cost between 525.00 and 535.00 per running foot, and no stuffing is required. Although lead is one of the least expensive metals, the major drawback In its use in architectural and industrial applications is cost. At its present pries, you have a material suitable for use in premium products and particular arch itectural applications. If sheet lead can be marketed for a cent-and-a-half above pig price as the English and French told me they were doing, you would be able to increase your potential volume many fold. At twelve to fourteen cents per pound you are going to be in a good position to compete with plywood perfinng backed by gypsum board and with solid 2-1/4" gypsum and steel partitions. IP^UJIPV wrjRijpejjP I(|!SU I ll 1111 ' "M"H )*V=' ` W** LIA17?07 * !.:. ' < .--^.-^,-.4-...^.. . .V,- , ' y w fifh! \J I Baaed cn a laminating cost c! 5 to 8 cents per square foot, end using 9 to 8 pound lead at a few cents above pig price, lead has a tremendous sales potential Ln these and other marKetn M 16 to 22 cents per pound you have limited your market. To get the lead out, into Industry and architecutre, we must break the price barrier which 1 have indicated above, Is based on two factors. One Is the basic price of rolled lead. The other Is educating the architect and contractor to the facts that lead is an easy and simple material to work with and that large mark-ups are not necessary as would be required with new materials of unknown properties. To really make lead into a fast-sell log architectural product will require: 1. Education of architects, contractors, and builders, and 2. Reduction of the gap between pig lead price and delivered, laminatedsheet price at the )ob aits. Lewis S. Goodfriend Lewis S. Goodfriend & Associates Consulting Engineers in Acoustics Little Falls, New Jersey April 11, 1962 *-* **" '" 9 "jAi^spgujjii1 j ..- -pa iif|iwf'inii| y J ,w. 1W I iij wi |ij gwjjpuy' PHI) ijl