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 faci
lities has increased as a result of this earthquake damage, there is s
till a shortage of information regarding sewerage pipe materials that
are earthquake resistant. In order to rectify this situation, Japan In
stitute of Wastewater Engineering Technology (JIWET) has brought toget
her sewerage pipe materials that are considered to be both earthquake
resistant and suited to open-cut method (which is the main element req
uired in discussing the seismic resistance of sewerage pipe line syste
ms) in a publication known as ''Technical Data on Earthquake Resistant
Sewerage Pipe Line Materials - Special Edition'' (hereinafter referre
d to as the Technical Data). Copyright (C) 1996 IAWQ. Published by Els
evier Science Ltd.