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Twin Towers Residence Hall Overview: facts, history, implosion information

May 21, 2008 -- ASU will demolish the vacant Twin Towers residence hall, 100 South Driver, by controlled implosion on Sunday, May 25, at 7 a.m. Preparatory work on the site began March 31, and all asbestos, lead paint, PCB ballasts, and mercury-containing light fixtures have been removed. The implosion is expected to take 15 seconds. For a map of the public viewing area and the safety zone perimeter for the implosion, click here. For an additional map of the Twin Towers public viewing area, click here.

Overview, facts, and history on Twin Towers Residence Hall:

         Official name: Seminole Twin Towers, generally known as Twin Towers

         Building design: Stuck, Frier, Lane & Scott Architects, Jonesboro, AR

         Construction contract date: Feb. 21, 1966

         Building contractor:  Harmon Construction, Oklahoma City, OK

         Construction cost: $2,964,597

         Building completion and occupancy:  Fall, 1967

         Length of time to build: Approximately six months

         Length of time for implosion: Approximately 15 seconds

         Physical address: 100 South Driver, Jonesboro AR 72401

         1967 Governor of Arkansas:  Winthrop Rockefeller

         1967 ASU Board of Trustees: Joe Brooks, W. P. Gulley, Max Poe, Russell
     Owen, Van Smith, William Wyatt

         1967 ASU President:  Dr. Carl R. Reng

         1967-68 ASU Student Govt' Assoc. President:  Mike Gibson (current chair,
      ASU Board of Trustees)

         Structure: Nine-floor concrete frame, spread footings, concrete block back-up
     with brick veneer

         Building weight:  approximately 72,000 tons.

         Building square footage: 175,204 square feet

         Building height: 100 feet tall

         Capacity: 1,129 male students; average occupancy was 700

         Singles: Renovated mid-1990s to provide single rooms on every other floor

         Number of rooms rented over building life: Approximately 23,600

         Used as residence hall: 1967-2006 academic years

         Subsequent use 2006-07: Training site for police and firefighters

         Future use: Greenspace; possible future construction of academic building
     (contingent on funding)

         Date of implosion: Sunday, May 25, 2008; Countdown begins 5 a.m., felling
     approximately 7 a.m.

         Preparatory work and hauling of debris: Chandler Demolition, Memphis

         Implosion sub-contractor:  Controlled Demolition Incorporated (CDI), Phoenix,

         CDI website:

         Total cost of demolition: $1,036,000

         Preparatory work: Began on March 31, 2008

         Preparatory work timeframe: Approximately eight weeks

         Substance removal: Asbestos, lead paint, PCB ballasts, and mercury-containing
     light fixtures have been removed

         Debris field:  Approximately 18 feet high

         Debris removal timeframe: Approximately three months

         Adjacent buildings: Fine Arts Building windows will be protected with plywood

         Campus residents: Persons living within safety zone asked to vacate by 5 a.m.
     (hotel or breakfast provided); allowed to return when dust settles (projected to be
      by 8 a.m.)

         Test charges: Will be set May 22 at 7 a.m.; no special preparations necessary

         Safety Zone perimeter: Approximately 500 feet

         Preparation: 1st, 3rd and 6th floor structural supports removed; building wrapped to
    contain debris field; stairwells removed

         Prevailing winds: Generally from the southwest at this time of year

         Implosion: CDI is not "blowing up the building," but rather will use a minimal
    amount of small, strategically placed explosive charges in selected reinforced
    concrete columns to sequentially disable them and allow the building's weight and
    construction to control its failure in a predetermined area

         Explosive charges: CDI will utilize approximately 200 pounds of
    nitroglycerine-based explosives which will be placed in 1,100 borehole locations on
    four levels of the building

         Decibel level: Implosion should be no louder than clap of thunder

         Vibration: minimal, no special preparations necessary

         Debris: About 360 tons of debris is usually felled per pound of explosives

         Debris destination: To become hardfill, will not go to landfill

         Dust: Dust is a natural byproduct of construction and demolition activities. The
    quantity of dust generated during an implosion is the same quantity that would have
    been generated during conventional or mechanical demolition, with the advantage
    that with implosion, the generated dust prevails in the area for a short time (2-15
    minutes depending on wind speed). Most of this dust will settle within a few
    hundred feet of the demolition site.




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