A floodwater redistribution assembly for redirecting flood waters to a predetermined location for irrigation and municipal water service includes a subterranean vault that is positioned adjacent to a body of water known for periodic flooding. An inlet pipe is integrated into the subterranean vault to direct the water from the body of water into the subterranean vault. An outlet pipe is integrated into the subterranean vault to direct the water outwardly to a predetermined location for the purposes of irrigation and municipal water service. A ball valve is positioned within the subterranean vault to facilitate the water to flow into the outlet pipe. A ball valve control unit is coupled to the ball valve. The ball valve control unit is in remote communication with a remote control source and the ball valve control unit actuates the ball valve between an open position and a closed position.

A support tool for leakage repair of an inspection well includes: a curved loading plate having multiple grouting holes thereon, a telescopic adjustment device, and a base; wherein: one end of the telescopic adjustment device is connected to an inner side face of the curved loading plate, and the other end of the telescopic adjustment device is connected to the base; the telescopic adjustment device adjusts a distance between the curved loading plate and the base. The support tool is firstly hoisted at a leakage position of the inspection well; then a telescopic length of the telescopic adjustment device is adjusted, so that the curved loading plate and the base are in a close contact with opposite sides of the inspection well wall; and a grouting system is used to inject a double-slurry quick-setting repair material into a grouting pipe on the curved loading plate for plugging leakage.

A riser section having a generally tapered, e.g., frustoconical wall, the riser section having a first connector assembly at one end of the riser section and a second connector assembly at the other end of the riser section.

A riser section having a generally tapered, e.g., frustoconical wall, the riser section having a first connector assembly at one end of the riser section and a second connector assembly at the other end of the riser section.

The present invention relates to a storage tank, comprising a neck portion having an opening, the neck portion having side walls which define a first storage volume; a body portion connected to, and located below, the neck portion, the body portion having side walls and a base which define a second storage volume, wherein a section of the body portion is configured with a substantially rectangular cross-section in the horizontal plane, and wherein the second storage volume is greater than the first storage volume; and ribs projecting generally radially from the side walls of the neck portion and/or the body portion.

A safety grating has an arch shape cross section and is useful within a riser having a frusto-conical shape wall which riser is attached to a septic tank or another structure. The grating comprises a hub and radially extending arms, one or more of which is rotatable relative to the hub length at a hinge joint, to decrease the size of the grating and enable installation of the grating by passing the grating a smaller end opening of a riser.

A safety grating has an arch shape cross section and is useful within a riser having a frusto-conical shape wall which riser is attached to a septic tank or another structure. The grating comprises a hub and radially extending arms, one or more of which is rotatable relative to the hub length at a hinge joint, to decrease the size of the grating and enable installation of the grating by passing the grating a smaller end opening of a riser.

The present invention is a method for rehabilitating, repairing, and replacing manholes and connected sewer lines. In some embodiments, a compressed liner is inserted through the manhole access hole or the connected sewer lines. Prior to insertion, the liner may be cut and/or folded to be compressed to a size that can fit through the manhole opening or the sewer lines. Once inserted in the manhole or sewer lines, the liner should be expanded, and if necessary, bonded together with a resin along the separation line. Next, a bonding material may be injected between the liner and a surface of the manhole or sewer line to seal any cracks or fissures in the brick or concrete wall and to seal the liner against the existing manhole or sewer line to improve structural integrity and longevity. A new corbel may then be installed and bonded to the liner.

A humidity adjustment device (10) according to the present disclosure includes a control unit (11) that acquires humidity information indicating humidity of a space part of a manhole and controls the humidity on the basis of the humidity information.

A prefabricated part comprises a concrete body that has the form of a pipe section with two pipe ends and a pipe inner side. The pipe inner side is lined at least in some areas by a lining made of plastic material connected to the concrete body, and at least one of the pipe ends is covered at least in some areas by a molded part made of plastic material connected to the concrete body. At least the pipe end, which is covered at least in some areas, has a connecting joint in order to connect the pipe end to a pipe end of a further prefabricated part. The lining consists of a thermoplastic material and the molded part consists of a thermosetting plastic. The lining and the molded part are connected to each other in a sealed manner.