When NL Drainage, contractors in northern Victoria, installed sewer infrastructure in the past, they’d often have to stop digging and laying sewer pipes after lunch so that there would be enough time to pour concrete to form the maintenance pits.
That process, with its open holes, heavy equipment and materials, introduced safety issues that required careful management. It also resulted in waste material and leftover components that had to be disposed of, rather than being re-used on the next structure...
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