Project summary provided by submitting company.
The structure acted as the recreation center for the QAK school. This recreation center building encompasses a main dining hall, kitchen area, 2 gymnasiums, an Olympic size swimming pool and other function areas.
The building's core consisted of 8" and 10" Tilt-Up shear walls and steel columns, while the shell was made of 12" and 15" insulated tilt walls in its entirety with the exception of main entrance curtain walls. Roof diaphragms were composed of structural steel frames, topped by 5 inches thick structural screed for the low roofs, while insulated sandwich panel decking was used for the high roofs. All roofs bear on external tilt panels, internal tilt panels and steel columns. Biggest spans between columns was 26m.
The construction of this irregularly shaped building required high levels of coordination to achieve the desired outcome in the time that was given, and the tight area that the site had to offer. The construction program was identified from the start identifying the need to finish both wings (gymnasiums) first, then working out the interior of the central main structure before leaving out from the back side where the pool area was and closing of the exterior panels which were cast on a strategic sacrificial casting bed. This tactic enabled other trades to do their work unhindered from Tilt-Up pouring & erection activities while also clearing the coast other trades that come after Tilt-Up walls setting to come in and do their work earlier than originally anticipated as per the conventional construction program.
The project was re-designed from conventional concrete construction to construction using Tilt-Up, after the Tilt-Up contractor/specialist convinced the general contractor and the Client that the Tilt-Up system will reduce cost and expedite the construction process, where the Tilt-Up contractor also carried out the redesign of the project. This value engineering in switching to Tilt-Up resulted in achieving around 15% cost savings (of the skeleton works' budget) for the General Contractor (GC) and the client; thus, securing the contract for the GC.
A certificate of award was presented to the main contractor in recognition of outstanding safety performance (500,000 Man Hours without LTI) due to the inherent nature of tilt up having more work done on ground level than at elevations, and the ease at which the job location housekeeping can be maintained.
Special challenges faced during the Project:
Three top reasons this project should be considered for a Tilt-Up Achievement Award:
Successes of the project:
Al Khor, Al Khor
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