As may be gathered from the fact that Japan is known as an earthquake archipelago, the country has experienced earthquakes in numerous areas in the past and has suffered from great damage as a result of these.

Although the need for earthquake resistance measures in pipe line facilities has increased as a result of this earthquake damage, there is still a shortage of information regarding sewerage pipe materials that are earthquake resistant. In order to rectify this situation, Japan Institute of Wastewater Engineering Technology (JIWET) has brought together sewerage pipe materials that are considered to be both earthquake resistant and suited to open-cut method (which is the main element required in discussing the seismic resistance of sewerage pipe line systems) in a publication known as “Technical Data on Earthquake Resistant Sewerage Pipe Line Materials - Special Edition” (hereinafter referred to as the Technical Data).

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