Logistics of Concrete Pours:
In relation to any concrete pour, after the trucks that have delivered the concrete leave, the construction crews must finish the freshly poured slab. This process involves the concrete finishers waiting until the concrete hardens enough (1-3 hours sometimes more, depending on ambient temperature) to allow the finishing machines on top of the slab to provide a smooth level concrete surface. If this were not done the concrete would harden creating a deficient structural component, jeopardizing the integrity of tower construction.
Timing of Concrete Pours:
Prior to any concrete pour the required forming and rebar work must be completed. This frequently takes several hours. As well, the timing of concrete pours are dependant on the concrete suppliers availability to deliver concrete to the site.
In a large pour, for example for a floor slab, even if it is possible to begin in the morning, the work may still stretch into the evening, given the amount of concrete and the time it takes to pour and finish it.
Consistent with the City’s new Noise By-Law, effective October 2019, the development team has applied for and received the permit for late evening concrete work when and if it is required.