A support arrangement for a fluid monitoring system is provided, configured for being secured within a vertical shaft and for facilitating positioning of a fluid monitor suspended therefrom. The support arrangement includes an attachment arrangement to be secured to a vertical access shaft of an open channel fluid transport system, a cross rail assembly including a cross rail and being configured to be mounted to the attachment arrangement for being supported thereby, and a lifting assembly mounted on the cross rail and configured for suspension therefrom of the fluid monitor along a vertically-extending suspension axis. The cross rail is configured to be rotatable about a vertical axis when at least partially received within the attachment arrangement. The lifting assembly is configured to be selectively secured to one of a plurality of lateral positions along the length of the cross rail.

A support arrangement for a fluid monitoring system is provided, configured for being secured within a vertical shaft and for facilitating positioning of a fluid monitor suspended therefrom. The support arrangement includes an attachment arrangement to be secured to a vertical access shaft of an open channel fluid transport system, a cross rail assembly including a cross rail and being configured to be mounted to the attachment arrangement for being supported thereby, and a lifting assembly mounted on the cross rail and configured for suspension therefrom of the fluid monitor along a vertically-extending suspension axis. The cross rail is configured to be rotatable about a vertical axis when at least partially received within the attachment arrangement. The lifting assembly is configured to be selectively secured to one of a plurality of lateral positions along the length of the cross rail.

System for drainage of surface water, the system comprises a number of tanks being connected to a main pipeline leading water to a recipient. Each tank has at least one outlet for leading water from the tank to the main pipeline, and a corresponding lid, the lid is limiting the outlet until the water is at a predetermined level in the tank. The system further comprises a check valve arranged downstream of the outlet of each tank, preventing water from entering the tank from the main pipeline, and at least one air bleeder valve and at least one siphonic drainage regulator arranged between a tank and the recipient.

Traffic-compatible vented precipitation guarding manhole cover assemblies may include a manhole cover having an exterior manhole cover surface and an interior manhole cover surface. At least one opening may extend through the manhole cover from the interior manhole cover surface to the exterior manhole cover surface. A flexible, resilient extension conduit having elastic recoil memory may extend from the exterior manhole cover surface at the at least one opening.

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 manhole (100) for subterranean installation is described. The manhole (100) comprises a first chamber (110) arranged to receive storm water and a second chamber (120) arranged to receive sewage water. The first chamber (110) comprises a first inlet (111) and a first outlet (112). The second chamber (120) comprises a second inlet (121) and a second outlet (122). The first chamber (110) comprises a first access port (113) opposed to a first base (114) and a first wall (115) arranged therebetween. The second chamber (120) comprises a second access port (123) opposed to a second base (124) and a second wall (125) arranged therebetween. A first normal N1 to the first base (114) extends through the first base (114) and the second base (124). A sewer network 1000 and a method of installing the sewer network are also described.

A form for a plastic lined septic system distribution box is configured to receive a fill material. The form includes a jacket, a plastic core, a plastic inlet ring, and a plastic outlet ring. The jacket defines an exterior wall and exterior floor of the distribution box. The core defines an interior wall interior floor of the distribution box. The inlet portal ring and outlet portal ring extend between the core interior wall and the jacket exterior wall. The core and jacket are arranged to leave a space therebetween to receive the fill material, and the core is configured to serve as the interior wall and interior floor of the distribution box and to line the fill material for the distribution box during use.

The invention relates to an apparatus (1) for holding bait (2), in particular bait for rodents, comprising: a housing part (3) that can be inserted into a manhole, in particular a sewer manhole or a cable duct manhole, at least one bait platform (8) arranged in the housing part (3), delimiting at least one passage opening (9) on the bait platform side, through which a rodent can gain access to bait (2) arranged in the housing part (3).