Identifying constraints Constraints are any features that can influence the location of the project. Specific examples of constraints include existing infrastructure (such as roads, railways, underground services and access and egress issues), archaeological and heritage sites (including national monuments), elevated topographic details (such as mountains and hills), bodies of water (like rivers and lakes) and …
A drainage survey is a way of seeing the damage inside the pipe itself and ideally the pipe should be free of debris. It would be useful carry out power jetting first, before any survey is undertaken, so the pipe is clean, and access is readily available. Though drain jetting should be carried out regularly …
CCTV drainage surveys: an underground overview Usually, a CCTV drainage survey is done by sending a portable, navigable camera along the drain network. When CCTV surveys are requested, there’s usually an inkling of a problem. In most cases, the drain will be blocked or there will be some reason why the camera can’t get down …
