Abstract: 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 (?-½ 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.

Abstract: Slotted channels with coverings (10) are known for discharging surface water into a channel. The covering has at least one horizontal sheet-metal portion (13) and two vertical sheet-metal portions (11, 12) which are connected to one another via connection devices and have a slot (14) between one another for discharging liquid, for example surface water, into the channel body. In order to allow a particularly complete discharge of water, it is proposed that the horizontal sheet-metal portion (13) comprises drip devices (15) which are mounted and designed in such a way that water running along on an underside of the horizontal sheet-metal portion (13) drips into the channel body.

Abstract: The invention relates to a gutter element for draining, for example, road surfaces, which can be joined together to form a line of guttering. In order to seal off the connection, an elastic seal (30) is provided in the abutment region. In order to improve the hydraulic properties of the gutter, the cross-sectional profile of the invert (16) of the gutter (10) is substantially V-shaped. To improve sealing, the profile following the seal (30) in cross-section should be formed differently to that of the invert (16) in such a way that it has a constant maximum radius of curvature in the region of the gutter invert.

Abstract: 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.

Abstract: The invention relates to a support structure of a cover of a structure capable of being inserted into the ground, for example of a shaft or a channel, wherein the cover (10) comprises a traversable surface (11) and the support structure (20) extends downwards under said cover into the structure and comprises beam-shaped supports (21-23) such that their under support side (24) facing away from the surface (11) experiences a tensile stress when the surface (11) is loaded. The invention is further characterized in that between two areas (A, A?) a thickness (D) of the carriers with minimum tensile stress is configured substantially symmetrically in an increasing manner up to a maximum value and then, in turn, in a decreasing manner to form a ball shape when viewing the cover from below.

Abstract: Covers for drains, manholes or similar constructions are known which comprise a first grate (10) made of sheet metal and comprising slots (11) and struts (12), said struts having top faces (13) and each strut having side faces (14, 14?) made of sheet metal bent with respect to the top face. In order to increase the rigidity it is proposed that at least a second grate (20) is provided, the struts (22) of which are inserted in the slots (11) of the first grate (10).

Abstract: The invention relates to a drain device (5) for discharging waste water, having an upper edge surface (65) forming an outer perimeter of the drain device (5), a support surface (40) for supporting a cover member such that essentially, the walkable surface thereof extends flush with the upper edge surface (65), and having a bottom (10) for catching, and for conveying waste water to an opening (82) of an outflow connecting pipe (80). The upper edge surface (65), the support surface (40), and the bottom (10) are connected to one another by way of connection walls (25, 50) extending essentially vertically when in use. At least one part of the support surface (40) is formed in a sloping manner in the direction of the bottom (10) such that during use, waste water, which reaches the support surface (40), flows in the direction of the bottom (10).

Abstract: Trench drains are hollow or grid-like bodies which can be installed in the ground and are intended to receive precipitated surface water and slowly dissipate it into the ground or to store the water. These hollow or grid-like bodies are constructed from individual drainage bodies which must be firmly connected together. Drainage body connecting elements are proposed for connecting drainage bodies, which comprise two pegs which are connected via a web and can each be inserted in a receiving orifice of a drainage body so the two drainage bodies can be connected together via the web.

Abstract: Rails for drainage channels or manholes are known on which a cover of a channel or of a manhole can be placed. The rail has a horizontal bearing surface (10) extending in a longitudinal direction of the drainage channel or of the manhole and, substantially perpendicular to this bearing face, a rail edge (11) on the inner surface (12) of which the cover can be placed and on the outer surface (13) of which a surface covering can be applied. To increase the strength, it is proposed that the bearing surface (10) and/or the inner surface (12) and/or the outer surface (13) is/are provided with beads (20, 22, 23) over the entire length of the rail (1).

Abstract: A stable and variable design of a drainage structure includes a drainage body (11) and a cover (20). The cover (20) has engagement devices (13, 13?; 14, 14?; 23, 23?) when seen in a longitudinal direction of the drainage body (11), whereby the cover connects upper edges (12, 12?) of the drainage body (11) to one another transversely to the longitudinal direction in a tension-resistant manner over the entire length of the drainage body. In order to allow the use of different covers (20) for different loads, for example while using the same drainage body (11), two types of engagement devices (13, 13?; 14, 14?) are provided on the drainage body.

Abstract: Drainage body surface units are known with conical spacer elements which are connected together via a base. The spacer elements have casing surfaces which run undulating in cross-section, comprising successive wave peaks and wave troughs. In order to guarantee as high a strength as possible with as little material usage as possible, a construction is proposed in which the wave peaks transform into the wave troughs via transitional regions, wherein the transitional regions have a smaller material thickness than the wave troughs.

Abstract: Coverings for structures which can be installed in the ground are known. In order to lock the covering on the structure, closures are known which comprise a snap bolt which is designed in such a way and is mounted movably on the covering (20) against the force of a spring device in such a way that, during closing of the covering (20), the snap bolt is forced back and snaps in behind a counterbearing (14, 14?) fixed to the structure in a closure position. To simplify the arrangement and also to improve durability, it is proposed that the snap bolt is mounted in a housing (40) which can be fastened in a housing receptacle of the covering (20).

Abstract: A separator is indicated, which is arranged in a container having a circular or ellipsoidal cross section and having a container wall, for separating a light liquid-water mixture, for example oil-polluted water, comprising: a feed arranged on a first side of the container having a feed chicane, which directs the supplied mixture downward and divides it into two first flow parts that are substantially of equal size, an outlet having an outlet tube, a circular or ellipsoidal flow wall having an internal wall side and an external wall side, wherein the flow wall passes through at least half of a full circle, preferably at least three quarters of a full circle, and has an opening, which is facing a second side of the container opposite the feed, wherein the flow wall between the external wall side of the flow wall and the container wall forms two flow channels at two opposite sides of the container wall in each case from the feed to the second side of the container, wherein in the flow channels in each case one o

Abstract: The invention concerns a cover element for covering an opening in an in particular horizontal surface of a drainage body, with an edge region which is configured to support the cover element on the drainage body, and with a cover region which has a grid-like or perforated structure with supporting elements. It is distinguished in that the supporting elements have a thickness increasing in the vertical direction starting from the edge region in the direction of the regions remote from the edge, such that the cover element has a substantially plano-convex outer contour.

Abstract: A The manhole cover is described with a supporting structure device comprising force distribution ribs for supporting a top surface of the manhole cover which can be driven over, and a hollow force distribution cylinder arranged substantially centrally, in particular a circular force distribution cylinder, for supporting the force distribution ribs, characterised by a force distribution plate to relieve the load on the force distribution cylinder, wherein the force distribution plate at least substantially completely covers an underside of the force distribution cylinder in relation to the top surface, and wherein the force distribution ribs transform smoothly into the force distribution plate.

Abstract: A manhole cover is described with a supporting structure device comprising force distribution ribs for supporting a top surface of the manhole cover which can be driven over, and a hollow force distribution cylinder arranged substantially centrally, in particular a circular force distribution cylinder, for supporting the force distribution ribs, characterised by a force distribution plate to relieve the load on the force distribution cylinder, wherein the force distribution plate at least substantially completely covers an underside of the force distribution cylinder in relation to the top surface, and wherein the force distribution ribs transform smoothly into the force distribution plate.

Abstract: A separator is indicated, which is arranged in a container having a circular or ellipsoidal cross section and having a container wall, for separating a light liquid-water mixture, for example oil-polluted water, comprising: a feed arranged on a first side of the container having a feed chicane, which directs the supplied mixture downward and divides it into two first flow parts that are substantially of equal size, an outlet having an outlet tube, a circular or ellipsoidal flow wall having an internal wall side and an external wall side, wherein the flow wall passes through at least half of a full circle, preferably at least three quarters of a full circle, and has an opening, which is facing a second side of the container opposite the feed, wherein the flow wall between the external wall side of the flow wall and the container wall forms two flow channels at two opposite sides of the container wall in each case from the feed to the second side of the container, wherein in the flow channels in each case one o

Abstract: Covers for drains, manholes or similar constructions are known which comprise a first grate (10) made of sheet metal and comprising slots (11) and struts (12), said struts having top faces (13) and each strut having side faces (14, 14?) made of sheet metal bent with respect to the top face. In order to increase the rigidity it is proposed that at least a second grate (20) is provided, the struts (22) of which are inserted in the slots (11) of the first grate (10).

Abstract: A cover grating for a drainage channel or a similarly hollow body which can be installed in the ground is presented, wherein the cover grating is produced in a single piece and more particularly from a sheet metal strip, comprising at least two longitudinal webs extending on the underside of the cover grating and inlet slots formed in the cover grating between these longitudinal webs and comprising transverse webs resulting from the slot forming operation and extending on the lower side of the cover grating wherein the transverse webs are provided at each of their end regions with at least one receiving projection which at least partially engages in to a respective complementarily formed receiving slot in the longitudinal web.

Abstract: A surface water drainage system according to the present invention includes a structure that can be installed in the ground, and a cover that can be laid onto an upper edge of the structure. Fixation devices that are attached to the cover include a locking system in a form of elastic hook elements fixed to edges of the cover that can be brought into snap-on engagement with other locking system on the structure in order to retain the cover on the structure.