Document XO61JgpeG4pGer9DYp0YMG534

PROVIDES PERMANENT LOW COST SOUND ABSORPTION.... IT HAS THE NATURAL ADAPTABILITY OF PLASTER SaIUNIT!'. Ac. II' -T[( Al. P'-A-TKIi is Dlie of tile oldest uf .'c.iiml ah-orbent material.-. It ha- been .specified ami u-ed by architect- for a great many year-. It- growing use ami popularity are based on I he -imp1-- fact thai it prmInee- the ilc-v-d results at lo.v cost and that it has the natural con-truction advantages of piaster. It i- put nn without any radical departi re from -randard u ii-traction method- and it does not pre-ent any un usual ap: carance. A TYPE FOR EVERY PURPOSE There are four types of Sabinite: Sabinite A. which is used for general acoustical plaster work on ceil ings or above wain-cots; Sabinite 15. for producing a -mootli hard troweled surface, readily cleanable. on walls or wainscots expo-ed to abrasions; ^abinite ."is. fur u-e in room- of high moisture con tent. -uch a- -a uming pool- and -Imwer room-; a in I < 'a-l mg r-ai n nil c. I{ecause the capacity to ab-orb -ound i- a natu ral feature of Saiiinire. no after t ' alment is re quired. Sabinite doe- not depend upon puncturing, -tippling or other manipulation of the surface for it- act 111-tic.,. ''.'-iilt-. It absorb- -ound through a multitude of very small passages into which sound enters and in which by friction it is dissipated in the form of heat. Neither softness nor resiliency plays any part in this process. Neither is a -rue characteristic of plaster and neither is depended upon by Sabinite. Sabinite has been constantly improved. To meet various service requirement- the four types have been developed. Working qualities and covering capacity of each type have been improved and acoustical absorption has been increased. Sabinite m its present improved form is the result of I he combined etf.-rts of Dr. 1'aoi Iv Sabine and the [{.carih l.ai. .ratories of the I nited Stales ( yp-um ' umpaiiy. hinile blends with the classical interior. First Church of Christ. Scientist. Montclair, .V. J. Faulkner and Wands, Architects. b C 1 fa0 Sabinite Ceiling. Grill Room, Downtown Athletic Club, New York Citv. Starretl & Van Vleck. Architects. Duncan Hunter. Consulting Architect. HIGH AND LOW ABSORPTION COEFFICIENTS COMPARED 111 j>l.iritiifur t in- me { icoud u.-;iI ! rent iiicul - . t.lie principal object of" \\!m It is to ab'Orb sound, it is easy to reach the conclusion that the best treatments are those which have the highest ab sorption eoelh'-ients. An acoustical etutineer could almost say that the reverse is true. Materials with moderate cannedy to absorb sound applied over large areas are actually more effective in the majority of eases than concentrated areas of high coefficient materials. What is wanted is the neces sary total absorption as economically as possible plus structural worth and architectural fitness. Within most auditoriums, unless the volume is exceptionally great ;n relation to the seating capacity, ceiling applications of Sabinite Acous tical Plaster will provide complete correction. A similar line of reasoning applies to noise reduction in offices. 15ecau.se the noise level in a room varies inversely as the amount of sound absorption present, the inclination is to turn to high coefficient materials. But the relationship is geometric, rather than arithmetic, and there is a definite diminishing return when additional ab sorption is installed. Additional absorption does not provide proportionate quiet. The proper solu tion is to compare materials by results indicated by analysis, and not to compare absorption coefficients, one against the other. 33006 1190 ACOUSTICAL PLASTER EXTENSIVELY USED IN A WIDE VARIETY OF STR Sabinite is adapted to use in virtually every type of building where a plaster finish is suitable; in fact in almost every type of building where a sound absorbent finish is needed. The few excep tions are those buildings in which the area avail able for treatment is quite limited. Sabinite has had a world-wide use for years in a great variety of buildings, including churches, schools, hospitals. clinics, libraries, banks, office buildings, restau rants, club buildings, lodge halls, theatres, gym nasiums, natatoriums, undertaking parlors, court rooms, ball rooms, lobbies, and university class rooms, where it has been specified by leading architects. In buildings where excess moisture con ditions exist, such as natatoriums or buildings that house swimming pools, Sabinite 38 is used. Sabinite Ceiling, Indiana Ballroom, Indianapolis, Indiana. Robush and Hunter, Architects. URES Sabinite used in the Corridors, Maternity Hospital, E ton,Mass. A ndrews, Jones, Biscoe& Whitmore, Architei i:Sabinite assures ipiiet in ihe Public Library, Whitt California. Myron Hunt & H. C. Chambers, Archite Sabinite Interior, First Congregational Church, Evanston, III. Talmadge and Witson, Architects. Sabinite quiets Bowling AUeys, London Life Insura Bldg., London, Ontario. John Moore & Co., Archite 3?006 1192 LOWER COST PER UN ...EASIER TO APPLY Although Sabinite has always been low in cost per unit of sound absorption it is now more eco nomical than ever. Application has been simplified and absorption increased. Without changing his method of working, the plasterer finds that Sabinite goes on easier and spreads better. By actual test the absorption of the Sabinite of today is more than twice that of the original Sabinite. These features are the principal ones to consider in selecting the right acoustical material--pro- mu/a Sabinitehas greatercoveringcapacityand is easierofapplication. vided the material is architecturally correct--and plaster of course has a wider range of use than almost any other interior finish. APPLICATION Sabinite is applied as a finish plaster in two or three quarter-inch coats over a properly prepareil base coat--Sabinites A and B over a gypsum base coat anil Sabinite :?S over an Oriental Stucco base coat. In each case the material is mixed in a stand ard mixing box or a machine mixer with water only and applied with hawk and trowel. No applica tion skill is required beyond that of the average experienced plasterer. The three types of Sabinite Acoustical Plaster applied with a trowel are best adapted to installa tion in buildings during their constructiou. Because of the expense of installing scaffolding, prepara tion of bases, etc., they are not adapted to use in existing buildings. For existing buildings tile ab sorbents manufactured by this Company are re commended. Sabinite is unique in its ease of application. It is lighter in weight than ordinary plaster, and bonds firmly to the base coat. There is nothing in it to burn, irritate or in any way injure the mechanics applying it. Since it is applied over a dry base coat uniformity of color is simply obtained with colored Sabinite. ABSORPTION OF SABINITE Tests conducted by the Acoustical Materials Association Laboratory produced the following absorpl ion coefficients. Thick Coefficients Noise Reduction ness 128 256 512 1024 2048 Coefficient Number of Coats Sibinite A Acousti H' .34 .21) .31 .61 .69 .50 1st coat l4* cal Plaster Sabinite A Acousti V .36 .27 .53 .67 .67 .53 2nd coat >4* 1st coat l4* cal Plaster 2nd coal ' + 3rd coat *4' Sabinite 28 Acous V .25 .26 .32 .60 .rii .50 1st coat14' tical Plaster 2nd coat * The noise reduction coefficient is the average of the coefficient at frequencies from 256 to 2048 cyclea inclusive, given to the nearest 5<-r. This average coefficient is recommended for use in comparing materials for notaj quieting purposes as in offices, hospitals, banka, corridors, etc. For auditorium treatment, attention should be directed to the coefficients at 512 cycles and other frequencies as explained elsewhere. APPEARANCE In the past the principal objection to acoustical materials has been their appearance. They have CO O' >-- u OF SOUND ABSORPTION .LESS LABOR PER YARD >ln Hall, School of Law, Northwestern University, McKinlock Campus, ujo. James Gamble Rogers, Architect. Childs and Smith, Associates. frequently been rejected because of the lack of decorative value. Sabinite, however, does not alter the appearance of walls or ceilings from that obtained with standard non-absorbent plasters. Four standard shades of Sabinite--ecru, ivory, cream and buff and a light-reflecting white finish are manufactured. Where other colors are required they will be supplied on the approval of samples at the requests of the architect or contractor. The original color of Sabinite can be changed later by spray painting with Rice's Mill White, Acoustilite, calcimine or spraying lacquer. Specifications for painting Sabinite are avail able on request, and it is suggested that painters do not attempt any decoration without first obtaining them. FIREPROOF AND DURABLE Sabinite is of mineral composition. It does not shrink or swell with climatic changes. It is incom bustible and will not increase insurance rates. It lias the ruggedness and endurance of gypsum plaster. There is nothing in Sabinite to invite or sustain insect or bacterial life. It cannot be gnawed and the pores are too small to harbor insect life. DISTRIBUTION AND SERVICE Sabinite is made in the principal mills of the United States Gypsum Company and is purchased through building supply dealers. To forestall any possibility of misapplication, a service man is supplied to instruct the plasterer and architect's superintendent on each job. No shipments are made for a job until the manufacturer is satisfied that a sufficient area will be covered to produce the necessary results. No charge is made for ana lyzing plans or servicing the application. CASTING SABINITE A special Sabinite is made for casting ornaments. This material is identical in texture and appear ance to the trowel applied Sabinite of walls and ceilings. Sabinite A, B or 38 will not make successful castings. Casting Sabinite can not be applied with a trowel but easily produces strong, accurate casts in glue or other molds. B9006 1194 SOUND CONTROL SERVICE OFFERED BY USG - Architectural acoustics divides itself naturally into three parts: (1) the acoustics of audience rooms; (2) noise absorption; and (3) sound insulation. Materials and services for the control of sound in all three phases are provided by the United States Gypsum Com pany. Interested persons may obtain from the company a practical booklet on acoustical correction and sound insulation, the USG Sound Control Service, that makes it possible for anyone to gain a useful knowledge of sound control. S 2S 0THER USG ACOUSTICAL ABSORBENTS In addition to Sabinite the United States Gypsum Company makes other major types of acoustical absorbents i ...... . : varying widely in price; it is thus able to provide a material that A' : : _ v . will economically take care of any absorption need. These materials . .. ' | include Acoustone, a noncombustible material made in convenient ' , . . - j tile units, Quietile, a fiber acoustical tile with brushed or sanded . | surface, and Aeousti-Yent--a construction in which the entire Per- fatile ceiling functions as an absorber of sound, and also as a grille through which conditioned air is introduced into the room. USG SYSTEM OF SOUND INSULATION The USG System of Sound Insulation is so complete as to provide a solution for any problem involving un desirable sound travel in buildings. It includes sound insulative construction for ceilings, walls anti floors and sound insulative doors i and machine bases. Analysis by a U S G Acoustical engineer before installation assures the owner of a solution that is adequate to meet his problem. TREM-BAR RESILIENT MACHINERY MOUNTINGS The obvious way to prevent the : noise of building equipment from bothering the occupants of a building is to prevent vibration from getting into the structure of ' the building. This is accomplished by mounting equipment on U S G i Resilient Machinery Mountings. These mountings permit the ma i chine to vibrate independent of the supporting floor. They are made i .... J for all types of machines. UNITED STATES GYPSUM COMPANY .. ( ENGINEERING SALES DIVISION i 300 WEST ADAMS STREET, CHICAGO 88006 1195