Document JrQ5qKk9GO45w5oxEGxmoN26a

Workers begin fine! installation I a prototype air craft control tower cab. The cab, pentagonal in shape, is said to be the first prefabricated, pre erected unit of its type ever built specifically for use in air traffic control. The airplane really isn't very new. Leonardo da \ lnci invented a work able model. That was in 1512. It might have flown what's more, if suf ficient motive power had been avail able. A modern jet engine for ex ample. You may be sure, however, had there been jet engines at the time, the squawks by the good burghers of 16th century Florence about the noise would probably have been audible in the 20th century. Complaints about jet engine noise are not necessarily new but now some thing is being done about it. When the Federal Aviation Agency recently commissioned the firm of I. M. Pei and Associates, architects of New ^ ork City, to design a prototype air port control tower, reduction of air borne noise took top priority. Strin gent requirements for minimizing ef fects of airborne noise on tower per sonnel resulted in the use of sheet lead in roof components. Lead was chosen because its high density, good damping capacity and freedom from stiffness make it the best sound iso lating material available. At the same time it eliminated the need for bulky, difficult to assemble and less efficient sound barrier panels. Laymon Miller, acoustical consultant with the firm of Bolt, Beranek and Newman, savs lead 2-- -- in combination with other materials permits highest possible sound at tenuation for a given surface weight, without loss of structural integrity. Thus far, over 50 tons of 1-lb. per sq. ft., 1/16 in. thick lead have been used in the towers based on the orig inal design. The roof section of the structure consists of a 2 in. layer of insulation on top of the steel roof deck followed by the lead and an as bestos board underlayment for the neoprene roofing surface. About 35 units will be used before the project is finished. They arc the first prefab ricated structures ever built specifi cally for aircraft control operations. LIA26485 ELECTRICALLY! In the case of The Lau Blower Company we are talking about air. of course. At Davton. Ohio some 245.000 square feet under roof are being used f to produce approximately 40 per cent of Lau's entire production of fan? and blowers. Air handling is their business, and on every side you can see why Lau is considered a giant ir, the industry. Other plants are located j in Cleveland, California. Indianapolis. I and Canada. The Indianapolis plant alone produces more than one million propeller fans of assorted sizes each year. Here at Dayton the most modern methods are being employed and Stacked coil steel is no challenge tor this electric truck which will now work as long as two full shifts on one battery charge. One of the "old-timer" electrics still handling skids of stampings throughout the Lau plant. plant management is constantly seek ing better techniques for production facilities. A case in point is the re cent decision to "go electric" in mate rial handling equipment--specifically fork lift and in-plant trucks. "The comfort and conveninece of our em ployees is one of our continuing ef forts and electric trucks certainly make a contribution to this, with their lack of noise and dirt'', said the manager. Of course, other practical considerations are to he counted on the plus side, too, according to man agement. These are such things as precise controllability, low operating costs, low maintenance costs, and long equipment life. The move to battery-powered ve hicles in this plant started w hen man agement visited an industrial show of electric vehicles sponsored bv the Dayton Power and Light Company. They reported the show was enlight ening. to say the least. It was here they learned that some of the old shortcomings of electrics were just no longer in the picture: slow speeds, short battery life, limited capacity of batteries, poor performances on ramps, etc. For the first time it was learned that the new batteries, the new electronic controls, and the new charging techniques were eliminating all those difficulties. And so-- Lau is on the move--electrically.' A "walkie" electric truck equipped to handle dies. Controls are so sensitive that precise maneuvering required here is no problem. 3 --3!**3 LI A 26A 86 ,VJ P f WJi ' -JMlLMiwgj ^ke flnmlzhin f^nJxlq.e... LEAD PIGMENTS TIE A NEW APPROACH RIBBON For the past several months, motor ists passing up and down the major highway along Manhattan's East River have noticed a growing ribbon of orangish-red steel working its wav toward the approach ramp of the Brooklyn Bridge. Planned and super vised by the New ^ork City Depart ment of Highways, the new approach The Brooklyn Bridge has been painted with a three coat system of lead in oil paints since it was built in 1883. ramp is part of an overall plan to ease traffic congestion on City streets in the area and on the bridge itself. This ramp, which is on the south side of the bridge is for traffic head ing to Brooklyn. An additional ramp on the north side is planned to handle vehicles coming from Brooklyn. Lead pigmented paints will be utilized on both ramps, as well as having been on the Brooklyn Bridge itself since it was erected in 1883. Many motorists, indeed, even some City officials have commented on the bright orange steelwork (which hap pens in this case to be a red lead in oil primer) and suggested that the entire structure be painted that color. This of course won't be done for the sake of uniformity and because this primer is not formulated to be used also as a finish coat. Marine atmospheres, such as exist here require extra corrosion protec tion, that's why lead pigments are used in each coat on the structural steel. Lead pigments in the paint sys tem provide economical, long range protection. It is interesting to note that when it opened on May 24. 1883. tolls were fixed as follows: Loot passase.............. 1 cent RR car passage.......... 5 cents 1 horse & vehicle .... 10 cents 2 horses L vehicle . . . 20 cents Neat cattle, each .... 5 cents idieep. & hogs, each . . 2 cents Part of orange ribbon which is access ramp fo Brooklyn Bridge. Orange is lead primer used to protect steel during fabrication. PADS ABOUT TOWN a round-up of uses of lead-asbestos antivibration pads in New York y^oln Center complex, the upper building In the center is the new Metropolitan Opera House and the lower (nearer) is the Phil* fcermonic Hall, Both are built on lead pads te isolate them from the Broadway Subway --diagonal at lower right. Federal and New York City funds paid for these buildings. Other recently built structures financed by the city have also used lead*asbe$tos pads; additions to Brooklyn College and the new New York City Public Health Labs. Less spectacular, but also typical of lead pad use, these small pads were used to iso late a new apartment house in the Bronx from railroad trackage near Grand Con* course. A spanking new office building now stands on this site at 277 Park Ave. The main track age of the Grand Central Terminal is quite evident. Note the steel columns, from a 1917 apartment house, marked "stay.11 These have lead-asbestos pads in the footings and were re-used in the erection of the new building. The Union Carbide building, also resting on pads Is in the background, right. The new Madison Square Garden Center, to be completed this Fall, occupies the site of the old Pennsylvania Station. The striking cir cular structure is a 13-story high sports and entertainment center. A total of 325 lead pads in its foundation will separate the roar of the crowd from the roar of the trains in the busy station facility. Close up of pads for one of the new columns at 277 Park Ave. All columns of the building were isolated, 4500 sq. ft. of pads in all. LIA2548P i i The uninitiated observer, however much he enjovs and appreciates sculp ture, has onlv the dimmest notion of the processes bv which it is made. He is aware, vaguelv. that a lead or bronze cast figure entails sketches and studies, small-scale clav models, armatures, mold making and parting, casting, and finishing of the final piece. Sculptors themselves, of course, are familiar with these processes and their technical problems. The artist mar chafe or bear up stoically, but he has to put up with them--or did have to put up with them. Dave Alan of Devco. Fairfield. N. J., is opening up a new, shorter path between con cept and completion of statuary. He starts with a sheet of lead. He likes to call what he does to it `'ma nipulation' and that covers two methods of working it: High Relief -- The first of these produces a very high relief panel, ex cept that it doesn't strike the viewer as relief. Shown working on "Man Emerging" he gives an idea of the scale on which the figure is propor tioned. No photo can do justice to the full round effect which the actual work projects. Part of the reason is that the contours extend 18 inches forward and 15 inches backward from the plane of the panel. This piece started as a sheet of lead 16 feet high and 5 wide, i4-inch thick throughout. This was bolted in to the steel support structure shown. Then, a full size sketch was made on the lead in chalk and two men began the rough forming with mallets and hardwood tools. Both sides were worked. When deformation hardened the lead, it was heated and annealed in the hard area. When it was roughly completed, Mr. Alan started the solitary work of developing the details and nuances. Using nrogres^ively finer wood tools, he sharpened expressive lines, tex tured surfaces, and brought the piece to completion. "Direct working in lead is gratify ing." he says, "because the desired form and effect are rather quicklv achieved once you master the hand working techniques. The hand tex tured finish enhances the overall ap pearance and gives a one-of-a-kind feeling, full of warmth and depth of feeling. And it's a practical and eco nomical method, too." for a permanent, invisible ing of these high relief pieces. Alan removes them from the w ing frame and bends the edge su under, until it is parallel to the face plane. Then, stainless steel with studs welded to them are plai in the concealing fold. Nuts on inside of the bearing wall clamp whole piece in place. Free standing forms -- Carrvii the sheet technique further, he is n! completing a group of three dancis " figures which will stand in a pi and fountain. Each 14 feet high, th are made by constructing a com tional armature, modeling thin lead over it to the finished form, an f ft* (. . ! - S10 and the lead with an inert castiii ^ material. Hand working develops tl desired texture here, too, and this lien supplemented by manipulating tl field lead sheet to produce shadow hip* mah lighting. j art. The inert hacking for the lead veno a casting material which reinfora '".Ifa it. The result of quite extensive e siom perimentation. it has excellent riel ales. itv and hnn4t"~ characteristics. I with 6-- --- L16489 V' Wl ,, dancing figures, partially completed, BIJ ,, some of the armature. ' ^itherability is good and it has a i hretfficient of expansion similar to H of the lead itself, Dave laughni " calls it his witch's brew--and. ^ Prstandahly, prefers that its com- . i-ition remain a "deep, dark secret, 'j No stranger to traditional tech' It jues. Mr. Alan produced the life- girls head, (cover photo), bv ing lead. But of his current work -two companion high relief panels, lour-foot-high frieze, a board room ill, two lobby wall plaques, and the atufref dailcin? figures planned, com^feioned, or in progress--all make j ^ of the sheet techniques. lit Dei co of 36 Pier Lane W est, Fairtl ield, Essex County, Sew Jersey. hif makes and procures architectural vt. It maintains branches in Flo- si tence, London, Paris, and Istanbul. of* Man Emerging" was commis sioned by M. Devrishian Associ"iqater. Architects, in conjunction *ith Moses Realty Company. View of the Depue plant of New Jersey Zinc Company during erection. Absorption towers are to the left of the 200-foot stock largest Precipitator ... has 154 lead pipes Lead's excellent resistance to cor rosion by sulfuric acid causes it to be used in a wide variety of chemical equipment in the chemical industry. One of the largest and most complex of these is the electrostatic mist pre cipitator and the largest precipitator yet is now going into operation. The new unit is at the New JerseyZinc Co. plant at Depue, Illinois. The unit employs 154 lead pipes. Each pipe is 10-inch in diameter and 15 ft. 1 ong. All of them have 10-lb lead, 5/52-inch thick, walls. M alls of the upper and lower chambers are also of 10-lb sheet lead. The walls are rein forced with cage-type steel strap con struction. (For another interesting example of the use of cage construc tion, see Lead , Vol. 30, No. 2, "Bot toms Up.") The 2,310 running feet of pipe and the upper and lower col lection chambers comprise over 100,000 lb of lead. The S02 gas used as raw material for the production of sulfuric acid is first passed through a scrubber where dust particles are removed. The gas then passes to the lead precipitator. Since the gases from the scrubbing tower contain a small amount of sul furic acid as a fine mist, it must be removed before the SO? gases are admitted to the contact section of the plant. The physical nature of this mist is such that it cannot be removed by scrubbing so a mist precipitator is provided. The mist precipitator is a device for producing a strong electrostatic field in a group of pipes through which the gases pass. The electro static charge imparted to the mist particles causes them to travel through the gas and collect on the side walls of the pipes. The resulting weak acid solution runs down the pipe walls and from the precipitator through a seal leg to the liquor col lection tank. It is of the utmost importance that the mist precipitators function at all times when gas is being delivered to the converter. The contact mass in the converter can be damaged if the H2S04 mist is allowed to pass into it for any appreciable length of time. The precipitator was designed and supplied by Western Precipitation Group of Joy Manufacturing Co.; the entire sulfuric acid plant installation was designed and built by Chemical Construction Corporation; the lead work was done by Larry Goad and Co., St. Louis. LIA26^9C Overall view c Reflections Of Harvard When Harvard University was founded in Newtowne, Massachusetts in 1636, Boston was a village and Cambridge didn't even exist. The last lew decades, however, have wrought more changes than the more than three centuries preceding them. No longer is it possible to move out in ever widening circles from Harvard Yard. As is happening else where in our increasinglv urban so ciety, the economics of land use have finally required that Harvard's build ings "go up in the air." One of the first buildings to mark this new phase is the William James Hall of the Behavioral Sciences bv Cioseup of shimmering pool. architect Minoru Yamasaki and As sociates of Birmingham, Michigan. The building is set back more than 60 feet from the street with an asvmmetrically placed entrance flanked by lead lined reflecting pools between which one walks into the building. More than 13 tons of 6 lb. (3/32 inch thick) lead was used to com pletely line both pools. All joints were burned. Lead sheets were laid on top of asphalt impregnated building felt. Top surfaces were painted with a cold applied brush coat of a bituminous coating compound which is standard protection against temporary corro sive attack from free lime in fresh mortar, concrete, fill or grout. Lead surfaces were also covered with a slip sheet before application of fill and finish. The sheet lead was carried up the sides of the pools and into reglets cast in the cheek walls, finds were then secured bv lead w ool calked into place. These pools, along with other furni ture and paving patterns in the fore court, provide an elegant setting for the building. Actually this forecourt is also a roof over a busy underground area devoted to research, examination, storage and utility rooms. The troublefree use of these areas, without re striction from the above ground pools, was assured by installation of sheet lead membrane waterproofing. One feature expediting the job, ac cording to 0. G. Kelley of Boston who handled the lead work, was the amount of shop work done. Plumbing was roughed in accurately, and fit. tings were temporarily installed and coordinated with the lead lining. Fittings were then removed and boots or collars of lead were burned to them in the shop before final in stallation. Detail of shop fabricated fitting after in stallation. Overall coordination of this and other w ork was handled by the George A. Fuller Company as general con tractors in cooperation with Harvard authorities. The presence of water as a part of the design concept of this building is particularly appropriate. It illus trates the increasing awareness of the part water plays in our lives. Man has always been aware of the fact water is vital to his verv exis tence. But the tranquil effect of still water in a pool or the living thing a shimmering surface or a leaping fountain becomes, point up the fact that water is not only vital to our lives but can have an influence on our behavior as well. ca m la si P ei f. B t< e I I; 0 e TFJrii fOv Leaded Porcelain . . . SIGNS of the TIMES High Signs -- Gas holder in New Haven, Con necticut, has huge porcelain enameled alu minized steel letters. Sign looks crisp and new even after many years service because porce lain enamel finish resists corrosion. i J i t To a porcelain enameler, shape can mean everything. Sometimes it means he can't risk putting his porce lain enamel on steel parts--intricate ' shapes may pose serious production j problems. Of course, leaded porcelain ' enamels for aluminum would be ideal for coating such highly formed parts. But these enamels cannot satisfac torily be applied to steel. Now however, some porcelain 1 enamelers have found an answer to ' the problem--porcelain enameled alu minized steel. Possessing the strength of steel yet the low-temperature enam eling characteristics of aluminum, aluminized steel affords enamelers the > advantages of both materials without | the customary drawbacks. Signs are one of the more inter esting applications for porcelain enameled aluminized steel. Large or small, exterior signs such as those shown here have always posed a special problem. The metal backings are Iusually quite severely formed or drawn, or both. And, being metal, they always presented a potential cor rosion problem. The marriage of lowtemperature leaded porcelain with aluminized steel has now practically eliminated corrosion and maintenance considerations. One porcelain enameler who has been supplying a lot of porcelain enameled aluminized steel lately is Mr. Robert Goodman of Porce-LenInc., Hamden. Connecticut. Mr. Good man, \ ice President of the enameling firm, says outdoor sign companies are enthusiastic about "P.E. aluminized"' as he calls it, because the maintenance costs are almost non-existent (as far as the porcelain enameled parts are concerned, maintenance is not re quired. but other parts of the sign may be damaged by storms or vandal ism, for instance the illuminator mechanism, or the translucent glass or plastic letter facing). Savs one of the outdoor sign com panies who have several of Mr. Good man's porcelain enameled aluminized signs in use. "Of course, initial costs of the signs will be higher than would non-porcelain signs, but that is quickly offset by the reduced labor costs for maintenance, and we expect these signs to be in use for many more years." i --9-- Sign of hospitality-- Motor lodges and hotels around the country have used porcelain enameled aluminized steel signs because ot extreme durability and low maintenance costs. Company Signs -- Always look attractive and help convey image of good housekeeping. LI A26492 Cupolas like this one on either side of the Mu* seum as well as the root sections are hard lead. Ford had a better idea ... in roofing Where else in all America can one stand in the room where Noah Web ster wrote his dictionary, walk 20 feet to the home of Robert Frost and, finally, cross the street to the Court House where Abraham Lincoln prac ticed law? Where else hut at the Henry Ford Museum and Greenfield Village in Dearborn, Michigan. Here, not re productions but actual buildings, brought from far and wide, have been grouped. Founded in 1929 by Henry Ford, the 260 acre indoor-outdoor museum complex houses historically significant technological, educational and artistic Americana. All of the buildings built to house these ex hibits, as well as many of those trans planted here, are the finest examples of colonial architecture in America. In other words, the jewel boxes are fitting containers for the jewels. Consistent with this effort on the part of Mr. Ford and his architects is the quality of the materials used throughout. The work of roofers and craftsmen, working with hard lead, played an important part in the con struction of the Museum. Hard lead was used in forming all flashings in connection with slate roofs and gutter linings, covers for tops of all exposed wood cornices, coverings for all wood railing caps, and roofing on all pitched gable roofs and tower decks in addition to many other details. The original story of thi M.istum was published in Lead , July 1931, tw years after its opening. The accom panying aerial photograph, taken about that time, can be compared with a recent close up of the replica of Independence Hall. Trees more than 60 feet tall mark the tremendous changes which have occurred in the past 38 years. The lead however, aside from the development of its charac teristic silver-grav patina, has re mained unaffected by the years. As an additional bonus. Museum officials report verv little maintenance work has been required o\er that length of time. . . . CLOSEUP OF CENTRAL PORTION 38 YEARS LATER 0<CcU 'H' Sncfo a&oat ^lead ..plica Of Famed Schooner <<AMERICA" Sails With 20 Tons Of lead Aboard - Approximately 20 tons of pig lead have gone into The F. & M. Schaefer 0rewing Company's full-scale replica 0f the internationally-known racing uchooner. `'America." whose singular victor" over the best English sailing vessels in 1851 served as the fore runner of the America's Cup Series. Pictured are two workmen of Goudy and Stevens, designers and builders of yachts and commercial vessels, separating part of America's 15-ton lead keel from a mold at the com pany's East Boothbay, Maine, con struction facility. Another five tons of lead was used as ballast for the big schooner. For whom the bell doesn't toll . . . Balky doorbell at your house? One Lead reader passes along this tip. The doorbell button, if located so as to take a severe weathering, is probably the culprit. The contacting brass strips inside the button corrode and fail to make a conductive elec trical contact. After three minor re pair jobs (disassembling the button, shining the surfaces with steel wool) and attempts to waterproof it, he simply tinned the contacting faces with ordinary solder, leaving a heavylayer on the faces. More than a year of trouble-free operation now backs him up. (Previous record: 6 months.) Ask not for whom the bell tolls. If you have a soldering iron, it can toll for you. ... by any other name . . . Users of lead and other nuclear shielding materials are now able to make use of a new computer retrieval system for neutron data. Developed at Lawrence Radiation Lab of the Univ. of Cali fornia, it's called `Computer oriented system and newly organized storageto-retrieval apparatus.' Considering that that is quite a mouthful, its whimsical developers expect it to be come better known bv its initials-- COSA NOSTRA! Incidentally--Lead, the other morn ing, was an unwilling party to may hem but arrived triumphantly a bit later to help save the day. It started with a phone call to police from a Bronx, New York landlady. An ob streperous tenant had hit her over the head with a lead pipe. When police arrived they captured the ten ant--who was armed. The police had much less to fear than they might have. They were wearing lead-lined, bullet-proof vests according to a re cent issue of The New York Times. A little Bit Off The Top! -- When the "top" is an ultra-highspeed gyro scope a "little bit" is very little in deed. Balancing these precision in struments calls for hairsplitting ad justment. A technique that won U.S. Patent 3,301,090 calls for two lead electrodes on opposite sides of the gyro, connected by a glass tube con taining lead fluoborate solution. When the balance needs altering, an elec tric current, in the right direction, removes a milligram or so from one electrode and electroplates it on the other. Look Ahead with Lead CHANGE OF ADDRESS OR NEW READER Use this side of the coupon if you have recently changed your address or if you would like to be added to the mailing list for LEAD CHANGE OF ADDRESS ADD ME TO TOUR MAILING LIST (please circle one) PLEASE CHECK INTEREST Nene, title Company Street C*y. state, zip code To- Name. title Company -- Architectural & building Design Engineer Ceramics -- Radiation -- Other (please specify' Stre et LIA264 9^ izn-ci /yEB-f&SJrfA ftf 41. LIBRARY OF TECHNICAL INFORMATION1, UJJJLUJJJVUJ-LK/ UJJJJ4JLHJ VUj j me followin' publlcttions ere available frt of ehsffe unless otherwise noted. Semi rwj**--w 1 LEAD INDUSTRIES ASSOCIATION. 282 MADISON AVENUE. NEW YORK. N. Y. NEW LISTINGS The lead matrix A 26-min color film describing the diverse uses for lead. Available for group show ings. Working with Lead --and Adhesives Twelve-page manual tells how to do it, what adhesive to use. Covers acoustical, X-ray, laboratory, outdoor waterproofing, and special projects. Architectural & Construction Bulletin No. 1 Eight-page brochure on Acoustical Plenum Barriers and how to install them. Practical Designs for Noise Barriers An eight-page reprint which covers seven actual cases. GENERAL Lead & zinc supply and demand Authoritative examination of the short and intermediate supply and demand prospects for lead and zinc. Thirty-five pages. Design engineering data New developments in organolead chemistry Latest trends in using organoleads for variety of purposes. Eight page reprint gives data and reactions. BATTERIES Something new to know about battery power New developments increase capabilities of battery trucks and truck programs. Picture book of power batteries Industrial truck costs in a jiffy CONSTRUCTION Sound tests tabulated Eight page reprint details use of lead for noise control. Reviews common problems and the solutions that have worked. Lead to control sound and vibration Isolation of buildings from vibration Three reprints discuss a number of case histories of the use of lead-asbestos pads to control ground-borne vibration. Ways to reduce press vibration Practical lead sound barriers Twelve page manual gives specific wall constructions and performances. Lead roofing and flashing Sixteen-page handbook gives all standard lead roofing systems. High-temperature lead joints Waterproofing with sheet lead Lead work for modern plumbing $2 per copy; $1.50 lor 10 or more. ENGINEERING Soldering alloys New developments in soldering equipment and methods Five new soldering techniques are de scribed and shewn. Best features of each are indicated. Four pages. Where to use terne coated steel Four page reprint summarizes new indus trial uses for terne, a lead coated steel. Modern chemical construction Method of lining lead tanks Use epoxies to line tanks with lead Cleaning "hot" parts ultrasonically Piezoelectric transducers Importance of lead in glass New electroceramic data Lead sheathing for power cable Materials of construction review Corrosion data--lead & alloys Nuclear materials Radiation protection Anodes for cathodic protection FINISHES Classification of inorganic enamels Two part description of inorganic glass! enamels and application techniques, flute* tables, six pages. Follow the safety line with chrome yellow Formulations and suggested applications! for chrome yellow safety paints. Eight] pages. Lead paint systems for bridges Two reprints Decorative finishes for lead Red lead based paint systems Porcelain enamels: For aluminum Low temperature steel Glazes for brick UPON REQUEST, THE LEAD INDUSTRIES ASSOCIATION WILL BE GLAD TO MAIL "LEAD" REGULARLY. FREE OF CHARGE TO THOSE INTERESTED. AND WILL COOPERATE WITHOUT OBLIGATION IN THE SOLUTION OF YOUR LEAD PROBLEMS Reproduced by letterpress from lead type. PUNTED IN U.S.A. CUIDS-lALRHOrr-Bl'IiB, INC. NEK TOBE, N. V ; Mail to: Lead Industries Assn., Inc., 292 Modison Ave., New York, N.Y. 10017 Name, Title Company Street City, State, Zip Code Please send. TO REQUEST LITERATURE LlA2bA95