A WATER TANK HAVING MANHOLE ON SIDE

摘要

A water tank which has no need to install a manhole in each chamber is provided, which prevents the degradation of the easy load-proof capacity and droop caused by load. A water tank in which a manhole is built in the side comprises: an external body portion in which a storage is formed; a bottom part(200) sealing the lower part of the external body portion tightly; an upper plate portion(300) sealing the top of the body portion tightly; one or more manhole(400) formed in the body portion; and one or more checking unit(500) which is connected to the manhole and is formed in the diameter direction of the body portion.