Direct inspection of drainage systems

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Substruck Ltd. complete many types of drainage investigation, the nature of which will depend on the client brief or requirements. Generally, there are three types of investigation:

reactive – in response to a problem such as a blockage,

subsidence – investigation into a potential cause (i.e. leaking drains) or to provide information to form part of a scope of works where the drainage will have to be removed and replaced, or

general – in response to a recommendation of a house pre-purchase survey.

Our Phase 1 reports document a non-destructive investigation of the drainage system using one or a combination of direct observation, hydrostatic testing, CCTV surveying / inspection and drain tracing techniques.

On arrival to site, direct observation will tell you a lot about the current condition of the drainage and the standard of work applied during construction before any testing or surveying is carried out. We examine the system to determine compliance in relation to construction and siting of access points, ventilation, trip hazards, traps, etc.

Direct inspection of two vitreous clay drainage systems in Pouladuff and Lower Friars Walk in Cork tells us immediately that sections of each system is wholly not serviceable and will have to be replaced.

The photos show fractured and/or collapsed gullies and access junctions.