This standard specifies the components of septic tanks (hereinafter referred to as septic tanks) that use a single treatment method in which the outer shell of the main body is made of glass fiber reinforced plastic and are intended for 50 or fewer people. Notes 1. Components here include the outer shell of the main body, partition plates and other parts, reinforcing materials, and aeration equipment and blowers. ), and does not include manholes, inflow pipes, outflow pipes, and air supply/exhaust pipes.
JIS A 4101:1994 history
1994JIS A 4101:1994 Construction parts of glassfiber reinforced plastic water closet wastes disposal plant