Lafarge concrete products fly through a demanding schedule
- Project Facts:
Commercial airplane hanger
- CONSTRUCTION TIME:
May 2011 - Febuary 2012
- GENERAL DIMENSIONS:
93,000 sq ft.
- CONCRETE SUPPLIED:
AgiliaTM, ChronoliaTM, UltraTM
- VOLUME OF CONCRETE:
6855 m3 total
- ONSTRUCTION TEAM:
Amico Design Build (GC), Glos Associates (Engineer & Architect), City of Windsor (Owner)
The City of Windsor, Ontario will soon be the new owner of an Aviation Hanger. The building will be used to house a company called ‘Premier Aviation.’ who were awarded a contract to work on the Windsor International Airport’s aircrafts. This maintenance hanger will be used to work on large, commercial aircrafts and is projected to to add 200 jobs to the Windsor economy over the next 2 years, with some 450 jobs in economic spin off from the growth of the aviation sector in Windsor.
While the general contractor and architect have worked on this scope of project before, this particular type of investment is unique and the first of its kind to Windsor. The project itself also had a very strict schedule. From the beginning, the project was held up at the planning and permit stages, thus delaying the entire construction schedule by several months. With the strict penalties imposed by the city if the building is not operational and turned over to premier aviation on schedule, it is no wonder the construction team was feeling the pressure. On top of this, the job was also receiving funding from the Government of Canada\'s ‘Community Adjustment Fund,’ which requires a substaintial completion by a specific date.
The building is a 230 ft wide single span structure. AgiliaTM was used in 32 exposed concrete piers to support the large steel structural columns around the outside of the building. AgiliaTM was also used to accomodate the tight schedule, reducing the placing time and labour costs. It addition, it allowed for earlier structural loading of the piers, moving the project along quickly. UltraTM Horizontal was used to increase the slump of the concrete used for the apron slabs - the paving outside of the entrace to the hanger. They were placed off of the back of the truck and levelled using a truss screed. The UltraTM mix made it easier for the finishers to pull the screed along the forms.
When it was time for the hanger slab, ChronoliaTM 72H was required to meet the demanding schedule, where a full 28 day stregth in 72 hours was needed for early loading. The slab was poured in 15 seperate pours, as a result of the radiant floor heating tube ‘bays’ , which were set up to heat and cool seperately, and sloped to drain water. Due to the configuration and time constraints, portions of the floor were poured at a time. This also helped the schedule of the other interior work within the building finish without delays, with all slabs ready to accept traffic within 72 hours time.
Without the high early strength of ChronoliaTM, an alternative, and more expensive heating system would have been required to heat the building. Lastly, had the early strengths not been obtained, the job would have been behind schedule and faced major penalties, with a risk of losing funding.