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HEERY AND HEERY· FINCH. ALEXANDER. BARl\TES. ROTHSCHILD.AND PASCHAL Suite Associated Architects 700 West Peachtree Stree t. NE. A tlanta. Geo rgia .J0.J09 14.J 0 404/ 87.J- :17.J.J April 10, 1967 The Honorable Ivan Allen, Jr. Mayor of Atlanta City Hall Atlanta, Georgia Re: Atlanta Stadium Dome Dear Ivan: As you requested, we have over the past few months made an extensive study of the possibilities for a removable roof for Atl a nta Stadium. Working with Birdair Structures, Inc., we have now developed a design for an air-supported "umbrella" roof dome that Birdair believes can be put up or taken down in only three hours. This roof would be lifted into place by a 300-ft. hi g h telescoping mast in the center of the field, which would then retract into a missile-type "silo," leaving the stadium covered and ready for use. We submit herewith slides and drawings illustrating the system. Rough pre liminary estimates indica te that the r oof system and mast, i ncluding the air-support e quipme nt and a ventilation system , would probably cost between $1½ and $2 million. However, the present field lighting system would have to be modified, thereby making the total cost of the roof, its support systems, lighting modifications, and other work on portal vestibules , etc., possibly as hi gh as $4 or $5 million. However, a side benefit of t he lighting modifications could be t he raising of li ght levels to new requirement s for night color television for footbal l . As you will recall, all other types of dome structures and mechanical systems proposed in the past have been estimated at $15 to $18 million. �HEERY AND HEERY· Fli'JCH. ALEXANDER, BARNES. ROTHSCHILD.AND PASCHAL The Honorable Ivan Allen, Jr . April 10, 1967 Page 2 This new approach would not only be less objectionable aesthetically, but could be utilized as a permanent-type roof, should the Authority subsequently find it desirable to install a heating a nd air conditioning system and plan to leave the roof in place for extended periods of time or permanently. The probable cost for a heating and air conditioning system for the stadium would run between $5 and $6 million, which would still give Atlanta a far better barga in than the Houston stadium, which cost some $38 million and is substantially smaller in both seating capacity and dimension than the Atlanta Stadium . We believe that this design may be an answer to your desire to assure f a ns traveling to Atlanta Stadium from cities throughout the Southeast that scheduled events will be played on the scheduled dates. Sincerely yours , HEERY AND HEERY - FI NCH ALEXANDER BARNES ROTHSCHILD & PASCHAL By---v-::=:= ---.. -:=7.ffe ___.,.~-------.-_d _ James 1 . 1 ' . ~ By GTH/J HF/f bj cc : Mr . Arthur L . Montgome r y Mr. Mil l s B . Lane JV FABRaP H & H encls. �