Boxoffice-March.04.1950

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, Figure Your Own DESIGN FOR DEFEATING DRAFTS by F. HONERKAMP* As on example of scientificolly designed oir diUusers which blend into the smart decor of a modern theatre, the above illustration is of the auditorium of the Elm Theatre at Elmwood, Conn. Two large Anemostat diffusers serve the area in front of the balcony. M
. — and sides of this rectangle are less than four times the ceiling height. Therefore, one large diffuser will satisfactorily handle the section from balcony to stage and will be placed at the center of the 57x45-foot ceiling area. We have one more theatre section to consider; the projection booth. Here is a volume of 2,940 cubic feet. Using the two rules, we see that one diffuser placed in the center of the 14x21 projection room ceiling will be adequate. SELECT TYPE AS WELL AS NUMBER Having determined the location and number of diffusers needed for the 600- seat theatre, it is now necessary to select the proper types and sizes. The total air volume of all areas to be conditioned is 100,140 cubic feet. Since the air conditioning equipment handles 18,000 cubic feet of air every minute, the air will be changed every 5.56 minutes or about 10.8 times every hour. Turning to a manufacturer's table, we can quickly select the proper unit recommended for high rates of air change, and good for large cooling temperature differentials. It is now necessary to determine maximum neck velocity for use with this diffuser under the four types of locations In our case-history theatre. By checking the table which shows the type of diffuser chosen we find that Curve C covers areas under theatre balconies and calls for a maximum neck velocity of 1,075 feet per minute (fpm) for the diffusers here when placed 10 feet above the floor. Curve D, for areas over balconies, indicates 1,375 fpm maximum neck velocity for ceiling units at 14-foot height over the balcony, 1,500 fpm maximum neck velocity for the ceiling unit that is 24 feet above the floor, and 1,280 fpm maximum neck velocity for the unit in the projection room. DETERMINE REQUIREMENTS Before selecting the required size of the type of the diffuser chosen, it is necessary to find how many cubic feet of aii- each diffuser must handle every minute ( cfm i Under the balcony the volume of the enclosure is 33x45x10 feet or 14,850 cubic feet. Since the system changes the air 10.8 times every hour, the two diffusers under the balcony must pass 1,335 cfm apiece. For the section over the balcony the volume is 20,790 cubic feet. Since the system changes air 10.8 times every hour, the two diffusers over the balcony must pass 3,740 cfm, or 1,870 cfm apiece. In the area from balcony to stage the volume is 61,560 cubic feet. The single diffuser for this section must pass 11,100 cfm. Finally, in the projection room the single diffuser must pass 530 cfm. Fi-om tables prepared by the Anemostat Corp., it is now possible to determine the necessary size of diffuser to deliver 1,400 cfm 11,335 cfm calculated requirement) with a neck velocity of 1,000 fpm (maximum allowable 1,075 fpm). The table also shows this size unit can take care of a radius of diffusion from 8 to 17 feet at 1,000 fpm neck velocity. Each diffuser under the balcony serves an area 22V2X33 feet, thus the radius from the diffuser to the nearest side wall is 11 "A feet and to the farthest wall is 16 y2 feet—this is within the specified limitations. Again using this table for the diffusei's over the balcony, the same size diffuser will deliver 1,870 cfm (calculated requirement) at 1,343 fpm neck velocity (interpolated) which is under the maximum allowable neck velocity calculated (1,375 fpm). The table also shows this size unit can take care of a radius of diffusion from 9 to 20 feet at 1,300 fpm neck velocity. Each diffuser over the balcony serves an area 22'/2x33 feet, thus the radius from the diffuser to the nearest side wall is llVi feet and to the farthest wall is 16% feet again within the specified limitations. EMPLOY LARGER UNIT Applying the table to selection of the diffuser over the theatre section from balcony to stage, a larger unit will deliver 11,810 cfm at 1,500 fpm neck velocity. Calculated requirement was 11,100 cfm at PIAN VIEW AT AUOITOSIUM CEIUNG a neck velocity not to exceed 1,500 fpm. Allowable radius of diffusion is from 26 to 53 feet at 1,500 fpm neck velocity. Actual measurements between walls is 22 '/a feet which is within the requirements. In the projection room we find that the proper diffuser will deliver 545 cfm (530 cfm calculated requirement) with a neck velocity of 1,000 fpm. The table shows that this unit can take care of a radius of diffusion from 5 to 11 feet at 1,000 fpm neck velocity. This diffuser actually serves an area of 14x21 feet, thus the radius from the diffuser to the nearest side wall is 7 feet and to the farthest wall is 10 ('2 feet—this is within the specified requirements. BASE SYSTEM ON DIFFUSER NEEDS From the very simple steps outlined, it should be quite obvious to theatremen that they can take pencil in hand and can do a bit of figuring themselves before calling in the air conditioning experts. True, many other problems must be solved before final plans can be drawn, but once the diffusers are selected and placed, then the rest of the system is designed to fit this picture. Many attractive decorative effects can be worked out by accommodating lighting and air diffusion needs through use of combination units. Other stimulating* architectural motifs can be developed by surrounding the diffuser unit with cove lighting construction. Choice of proper air diffusers is a vital step in laying out a new system or in eliminating troubles in old installations. With this basic know-how, theatre owners and operators can approach the problem with increased understanding of proper equipment requirements. =15 2 T,pt AH 1 Aremoito , diHuicri 16" n«l dcom., 40" outer cone d>om Copoolr 1400 UNOEI lAlCONT BOXOFFICE March 4, 1950
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1 of the "^Jj, ^Jto run 1 aKord ! ,
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MORE LOVE rr LEHERS! Cv top^ ^"tts
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BEST HITCHCOCK MANNER
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i s i i:\TliE: , SE -i^ i Herbert,
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Western United DuMont General QUEST
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lis iime fo puf that 'A ^p \[^WOUf^
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ffhat ALAN LADD WANDA HENDRIX with
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See Record Turnout At Variety Concl
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ANOTHER HIGH HONOR FOR -G- I FOLLOW
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In more than pj comparable engageme
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United Artists Closes Hollywood Off
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OAlLÂ'i^ I nflA j^' uuuAR M^1« RE
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presents THE COMEDY O YEAR MIllAND-
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DOROTHY MALONE FORREST TUCKER FRANK
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CHESTER FRIEDMAN EDITOR HUGH E. FRA
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20th IS FAIREST! Allied Theatres of
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:( Here is acclaim with one Meaning
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Press breaks down » but $2.88 keep
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BOXOFFICE NUGGETS Phil Masters, man
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Midwestern and Southwestern DRIVE-I
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. . . Carl . . Mrs. . . . Jack BROA
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. . Dorothy . . Booker's . . Manage
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. . . Wilham . . Helen . . Benton's
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\ About $35.00 worth of popped corn
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STUDIO PERSONNEUTIES Barnstonners M
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^(McCcM ^cfront pOR THE FIRST TIME
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. . Lew . . . Barney . . Tim . . Wo
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. . . Beverly . . Roy LOS ANGELES l
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. . Kenneth . . Logansport, . . Mrs
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Page 62 and 63: . . The ST. LOUIS John Rees, owner
Page 64 and 65: RESEARCH BUREAU for MODERN THEATRE'
Page 66 and 67: . . Marguerite . . Missouri . . KAN
Page 68 and 69: . . Sidney . . . . Minnesota . . Af
Page 70 and 71: OMAHA T^rs. Jerry Drennan of the Pi
Page 72 and 73: . . R. RESEARCH BUREAU for MODERN T
Page 74 and 75: . . . LaVerne j' CINCINNATI Q,eorge
Page 76 and 77: . . . Earl . . . Bradley . . . Harr
Page 78 and 79: : Heywood Memo TO: Smart Buyers THE
Page 80 and 81: • . . Sun . . . . Andy . . The PI
Page 82 and 83: . . . Nick . . Lloyd . . . Figures
Page 84 and 85: . . . Sam . . . Ray . . The . . . J
Page 86 and 87: . . Harold . . TOO OKLAHOMA CITY TU
Page 88 and 89: . . . Edward . . Red . . Mrs. . . M
Page 90 and 91: Two Actors Offer Help To Senate Can
Page 92 and 93: Tell . . and Sell Scores of busy li
Page 94 and 95: manager in YOU DONT KNOW WHAT YOU'R
Page 96 and 97: . . MEMPHIS TJfrs. \V. F. Ruffin sr
Page 98 and 99: . . Florence TARZAN AT ATLANTA—Se
Page 100 and 101: . . Paramount's . . Nate . . Mrs. C
Page 102 and 103: . . Some ST. JOHN lyjotiun picture
Page 104 and 105: . , The . . Congratulations . . Mr.
Page 106 and 107: ôsi '-»®**^.'„oae ^'>"*" iecô
Page 108 and 109: Mii nI i R.K.O. Missouri Theatre, K
Page 110 and 111: USE COUPON NOW! ^THE STRONG ELECTRI
Page 114 and 115: as Increased Efficiency With Added
Page 116 and 117: The Latest Display in Comfort Condi
Page 118 and 119: Proper Insulation Is the Basis of C
Page 120 and 121: DON'T BE A HALFWAY HOST Attention t
Page 122 and 123: My Best Supporting Feature is CHRYS
Page 124 and 125: Few Touches Necessary In Brightenin
Page 126 and 127: THERE IS MO SUBSTITUTE FOR.- DRAFTL
Page 128 and 129: A TEN-STRIKE IN CONVERSION Soufh-Si
Page 130 and 131: New Equipment, New Appearance For M
Page 132 and 133: increasem Boxoffice Receipts^ WITH
Page 134 and 135: CIVIC ACTIVITY THE BASIS FOR GOOD T
Page 136 and 137: Putting the Parsley on Screen Prese
Page 138 and 139: ! RECTIFIERS Fnr EvTT Siz9 Thcatrm
Page 140 and 141: NEW APPROACHES IN SALT LAKE CITY TH
Page 142 and 143: ONLY Mmh^ BUILDS THE ARISTOCRAT OF
Page 144 and 145: i I PHONE SOUNDPROOF POPCORN BAG SI
Page 146 and 147: WHAT MAKES NAMA Makes Awards And Ap
Page 148 and 149: National Theatres ''Munchindisers"
Page 150 and 151: RCA Dealers to Market Typhoon Air C
Page 152 and 153: DO BUSINESS ALL SUMMER! New Detroit
Page 154 and 155: Iklmrncatii Girpiti lial OJi-!IMlEI
Page 156: Promoting Profits With Playgrounds
Page 159 and 160: V I item has been adequately tested
Page 161 and 162: A CHILDREN'S FAIRYLAND COME TRUE Th
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For MORE INFORMATION on any Product
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— . . skilled Hands That Work in
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DRIVE-IN PREFAB OWNER MAY NOW BUY M
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— Cleaners Who Work 'for Peanuts'
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High-Speed 16mm Lens P-381 In Produ
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— Adjustable Post Lights P-387 Fo
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Improved Features on P-392 Majestic
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— — — Ttie following concerns
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about PEOPLE / A NEW PATENTED POPCO
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fXOFFICE BAROMETER • EXHIBITOR HA
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Weather: Okay.—D. w. Trisko, Rltz
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Alphabetieal Picture Guids ladex aa
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: 1084 1009 1073 f tt Very Good; +
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' WARNER i RKO RADIO ai (91) Com-dr
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I Arthur UNIV.-INT'L WARNER RKO RAD
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20th Century-Fox PfOif. No^ Title R
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I Opinions on Current Productions;
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— Fine — ATES: 10c per worcL mi
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Boxoffice-March.04.1950

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