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Office building
— Commercial building used primarily for office work, with WC and kitchenette drainage.
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Oil spillage drainage
— Emergency response to oil spills entering drainage, with interceptor checks and EA notification.
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Open joint (drain)
— Drain joint with a gap between adjoining pipes, allowing root ingress and water loss.
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Open-cut excavation
— Traditional drain repair by digging a trench down to and along the pipe.
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Out-of-hours drainage
— Drainage response outside normal business hours, including evenings and weekends.
