- The size of the terminal was one of the major challenges for placing the slab on grade and slab on deck concrete. For many of the placements the pump was over 400 FT away from the actual placement so concrete had to be pumped through the boom of a 38M pump truck, 150 FT of steel pipe and then 80 FT of rubber hoses before being placed on the deck.
- Getting the concrete through this length of hose required careful monitoring at the batch plant and monitoring the slump at the pump to ensure the concrete was at a high enough slump to make it through the hose but wasn’t segregating and was still within the specifications.
- Concrete was placed through the winter on this project and required areas to be tarped and heated through the night to maintain temperature before, during and after placement
- The airside pavement design was a 700 psi flexural strength mix and was batched at large volumes. The pavement section was 18 inches thick. In addition, the pavement was placed in a complicated site with logistical coordination with other trades, utilities, and construction going on around it. The pavement is slip form paved.
- The flatness requirements of the terrazzo is a slope not exceeding a ¼” per 10’-0”. This tolerance required the slab on grade to be placed using laser levels to ensure the tolerance was met. The slab on deck was placed to thickness as per design requirements and the floor was leveled by the terrazzo subcontractor.