KEV has been granted a noise bylaw exemption permit from June 23 to July 31 for flyover bridge drilled shaft concrete pouring work in Connaught Park. The equipment required for these works are a drilling rig, crane, generator, and misc trucks.
The closest residents to these works are approximately 130 metres away on Connaught Ave. KEV is currently drafting a public notice with the intention of distributing the day the work is set to begin.
KEV has provided the following rationale for night work for this particular activity:
- We have to maintain a concrete delivery temperature of 20C for our shafts; typically ice would be used to reduce the temperature of the concrete, however since we are using a self-consolidating concrete mix we don’t have much opportunity for adding ice.
- Moving the concrete placement to 4am, with wetting aggregates during the daytime, and using chilled water and the allowable amount of ice is the only way for us to meet the delivery temperature requirements
- For these reasons we request a start time of midnight so we have enough time to clean out the shaft, get it inspected, place the rebar cage and center it, after which the concrete placement can start.