It is advisable to integrate a standardized textblock into the tender documents. This can be done by simply copying the text into the tender document. Alternativity download the PDF document with the example text from our website.
The construction of diaphragm wall joints should be described in all relevent technical details. This description must include information regarding the removal of joint elements (horizontally or vertically) or the option to leave them in.
In addition, the description should explain whether water stops are applied as mono or double system.
The contract documents should define the quality of the exposed diaphragm wall in accordance with „Dichte Schlitzwände“ , November 2013 of the Austrian society of civil engineering ( Österreichische Bautechnik Vereinigung ÖBV) to comply with Class A2 on a single wall and Class A4 for a double wall execution of retaining walls.
A data report of the surface of the joint should be provided to prove that the joint construction has been executed within quality standards. This will include information regarding timing, quality control process and corrective action.
Proposed type of joint
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To be provided by contractor
Execution with or without water stops, number of water stops
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To be provided by contractor
Time and measurement method to monitor of the adjacent concrete panel
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To be provided by contractor
Corrective action process to remove excess concrete
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To be provided by contractor