New Orlando Science Center Istallation, Orlando, Florida
On Friday, February 2, 1996, final acceptance testing was successfully completed for a model 30.375 Observa-DOME at the New Orlando Science Center in Orlando, Florida. Below are a few photos and a brief description of the re-assembly process. You can click on any of the photos to receive the larger size.
An artists' conception of the completed New Orlando Science Center in Loch Haven Park, Orlando, FL.
The 30 foot diameter Observa-DOME sits atop the central part of the building at an elevation of approximately 96 feet above the ground. Being an intregal part of a public building, it was necessary to demonstrate that our Observa-DOME structure will withstand all applicable windloadings as required by local and state building codes. To this end, the latest finite analysis computer modeling programs were utilized by our structural engineers, registered in the State of Florida, to provide structural calculations demonstrating the capability of this Observa-DOME. Because of the complexity of working atop an unfinished roof at this level, it was decided to re-assemble the dome on the ground adjacent to the facility and employ a crane to lift it on top of the building.
Monday, January 22, 1996, the prefabricated Observa-DOME sections arrived in a 48 foot enclosed van and were unloaded on site. Re-assembly began immediately beginning with the dome tension ring and supporting arch structure.
Tuesday, Observa-DOME personnel attached the dome skin sections to the dome tension ring and arches. The remaining skin flange bolts, "T" gasket, and slitframe splice plates were installed on Wednesday. Shutter actuating tracks & tubes were also bolted into place.
Thursday, January 25, the dome shutter sections were bolted together, lifted into place and bolted to the track mechanism. All shutter actuating mechanisms including cable, pulleys, gearmotor, limit switches and reversing relays were installed and tested. Additionally, an interior rubber shutter flashing was installed. The base angle ring sections, horizontal & vertical casters, grout, electrical power bars, and azimuth drive motors were hoisted onto an intermediate roof level .
Friday, the base angle ring and dome casters were set in place atop the building. Level and round to plus or minus 1/16 of an inch, the base ring was secured to the building steel structure with 48 - 1/2 inch anchor bolts.
Saturday, the space between the base ring and steel structure was filled with a non shrink grout to provide further support.
Monday, January 29, the dome was given a final washing on the ground to remove any fingerprints and dirt incurred during re-assembly.
Tuesday, Final preparations for lifting the dome atop the building were completed and an area was cleared between the dome and the building in which to assemble and place the crane early Wednesday morning.
Wednesday morning, 10 am, the 30 foot diameter Observa-DOME was lifted into place 96 feet above the ground and over 100 feet from the edge of the building. A 300 ton capacity hydro crane with a 235 foot boom was used to make the lift requiring approximately 30 minutes. By the end of Thursday, all flashings, skirting and electrical components had been installed. All rotating dome functions were tested in preparation for the final acceptance testing scheduled for Friday morning.
Friday morning, February 2, 1996, all final acceptance testing was accomplished successfully and witnessed by Directors of the New Orlando Science Center, construction management, and by the project architect. Total time for Observa-DOME personnel on site: 12 days !
The installation crew from Observa-DOME would like to take this opportunity to thank Scott Niskach; Orlando Science Center, Maynard Breeden; Baker Mellon Stuart, Peck and Marsha for their help and hospitality.