TEMPORARY FRAME FOR CONSTRUCTION OF SEPTIC TANK AND CONSTRUCTION METHOD OF SEPTIC TANK

摘要

PROBLEM TO BE SOLVED: To diassemblably assemble a temporary frame on construction site, to facilitate the handling of this temporary frame and to enable the safe execution of excavation work of the ground surface while executing water stoppage by providing the temporary frame with an upper aperture and bottom aperture, setting at least the outer periphery of the bottom of the septic tank to a size to allow the enclosure of the outer periphery and specifying the height dimension thereof.;SOLUTION: At the time of construction, a hole 16 of required longitudinal and transverse dimensions and depth is excavated on the ground surface 14 and the temporary frame 2 is hung and arranged in this hole 16. Next, the ground surface of the hole 16 exposed from the bottom aperture 6 of the temporary frame 2 is further excavated and thereafter, the top end of the temporary frame 2 is pushed down to place the bottom end of the temporary frame 2 into the base surface of the hole 16. In succession, a flat planar foundation 18 for the septic tank is formed on the hole base surface exposed from the bottom aperture 6 of the temporary frame 2 and the septic tank 20 is installed onto this foundation 18 after lapse of the required aging time. The temporary frame 2 is thereafter disassembled to panels and is taken out of the hole 16. The circumference of the septic tank 20 is completely embedded with sand and soil to end the construction. At this time, a manhole cap 22 formed in the upper part of the septic tank 20 is exposed from the ground surface.;COPYRIGHT: (C)2000,JPO