Construction research group Ciria is set to publish its guide to what should be considered good practice for grouting in dams.
The guide will provide advice on grouting for new dams, existing dams and service reservoirs.
Among the subjects covered by the guide will be dam and dam foundtion defects that can be rectified by grouting, injection methods.
Ciria associate director Kieran Tully said: “The key goal is to pull together all the good practice that Is out there for the benefit of the industry.
“It is one of those construction techniques where there is lots of experience and lots of knowledge that is applied, but where there is no go-to reference document to say ‘this is the way to do it’.”
Publication of the report is necessary because grouting practice is considered a highly-specialised field understood by only a few, according to Ciria.
Tully added: “No two dams are the same. It is about looking at what the ground conditions are, what the problem is that you have to solve and how you are going to solve it.
“Because there are so many different little variables, you have to have a lot of experience and knowledge and that only comes about by doing it time and time again over a long period of time.”
The guide is aimed at reservoir owners, reservoir safety engineers and those responsible for monitoring, investigating, maintaining and repairing dams and service reservoirs.
Ciria has also suggested that the guide will be usefulk for engineers entering the profession, procurement departments and those responsible for environmental protection.
Tully also said that the guide provides advice about best practice for clients and contractors before they contracts are agreed.
He said: “What the guide advocates is that there should be a discussion between the client and prospective contractors at an early stage to decide if they wish to just go ahead based on the information they have got or if they need to have additional information.
“It is about having a sensible conversation and not transferring all of the risk to the contractor right at the beginning in the interests of keeping costs down.”
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