Trench drains are installed in indoor or outdoor locations and provide drainage for water and/or other liquids. Trench drains are elongated, having a length that is generally longer than a width. A trench drain includes a channel, a frame, and a drain cover. The channel can receive and direct water and/or other liquids that have entered the drain via the drain cover. The drain cover is supported by the frame, which is mounted to the channel.

Connection devices for connecting a drainage gutter to a further functional element (10), for example to an inlet box, are known, which comprise an adapter plate (20) to which the drainage gutter can be connected. In order to ensure simple assembly on the building site in combination with a high degree of tightness, it is proposed to provide a cast-in part (40) which can be tightly cast into a wall of the functional element (10) and comprises fastening devices by means of which the adapter plate (20) can be fixedly connected to the cast-in part (40) in such a way that a flow space (2) of the drainage gutter can be tightly connected to an interior of the functional part (10) via a transfer space.

Surface water drainage Systems are known, comprising a water drainage body which is elongated by individual elements that can be placed next to one another, and which can be installed in the ground. The individual elements (1-6) comprise an inlet section which is arranged in an upper region of the individual elements (1-6) in such a way that water can flow into the inlet section. A first pipe section (20) is provided, arranged below the inlet section and communicating with same via transition Systems. According to the invention, in order to increase the drainage power, at least one further second pipe section (30), communicating with the first pipe section (20), is to be provided below or next to the first pipe section (20), wherein all the pipe sections (20, 30) can be sealingly connected to corresponding pipe sections (20, 30) of further individual elements (1-6).

To provide a portable device capable of capturing a flow of water from a stream, storm drain or runoff channel, on command and send that captured water into a pipe system, while allowing remote adjustment of the capture and flow rates out of the cube device, the stormwater syphon cube includes a rock grate to prevent stormwater borne objects from entering the device, and an exit valve adjustable via cable control, a side extraction valve adjustable via cable control to adjust the water flow into the extraction pipe, and extraction pipe attached to the cube to carry extracted water away to storage. The sealed exit pipe acts as a syphon drawing water out of the cube.

Disclosed herein is a drain pipe end cap comprising a fitting, for connection to the end of a drain pipe, and at least one gate, for allowing water and debris flow but deterring animal incursions.

A method of forming a threshold drain 31 is disclosed. The drain 31 extends alongside an exterior wall 4 of a building and is formed in an exterior surface 36. The building has an interior floor 21 with the exterior surface 36 and the interior floor 21 being substantially flush to permit traymobile, wheelchair and invalid access. In a single concrete pour, the drain gutter 31, exterior surface 36, interior floor 21 and a gutter 40 are all formed. The gutter has an exterior side wall 39 which supports a plurality of triangular cantilever arms 43. A support frame 42 having two longitudinally extending rims 51,52 is supported by the arms 43 and releasably receives a grate 32 between the rims 51, 52. The inner rim 51 is spaced from the wall 24 of the building, preferably by 10-12 mm (- inch), so as to provide a barrier to moisture in accordance with the Building Code of New Zealand standard set out in Clause E2 External Moisture. The drain 31 is also disclosed.

A flexible modular trench includes an open-faced channel extending along a central axis between a pair of axial ends. The open-faced channel includes a pair of axially-extending shelves connected by a trench wall. The trench wall has a smooth inner surface and a corrugated outer surface. The corrugated outer surface has corrugations extending along a plane perpendicular to the central axis to allow for increased flexibility such that the flexible modular trench is bendable in a direction perpendicular to the central axis.

A trench drain defining a channel and having an accessory rib allowing the convenient attachment of accessories to the sides of a drain in order to facilitate the installation of a trench drain, place drain outlets at any convenient places along the trench drain, and to create right angle joints between two trench drains.

A U-shaped trench drain channel and system. The drain channel includes a body having an elongated length between opposing ends. The body further has two side walls, a bottom wall connecting the two side walls and an open top configured to receive a grate. Provided on an exterior surface of the body is at least one U-shaped reinforcing rib with a groove formed therein.

A river course ecological treatment system essentially comprises a plurality of ecological biological water purification systems and a plurality of plastic retaining dams disposed along a river course, and at least one damp land ecological water purification system disposed beside the river course. The plastic retaining dams separate the river course into several retaining regions. The ecological biological water purification systems purify the water in the retaining regions by microorganism purification. Afterward, the water purified by the ecological biological water purification systems is introduced into rainwater channels of the at least one damp land ecological water purification system. After being purified by aquatic plants in the at least one damp land ecological water purification system, the water returns to the retaining regions the downstream portion of the river course. Therefore, a river improvement system capable of performing both step-by-step treatment and joint treatment is effectuated.