AU2013204516B2

AU2013204516B2 - A floor waste for draining water from a floor surface of a floor assembly

Info

Publication number: AU2013204516B2
Application number: AU2013204516A
Authority: AU
Inventors: Andrew Hobbs
Original assignee: Plastec Australia Pty Ltd
Current assignee: Plastec Australia Pty Ltd
Priority date: 2012-08-24
Filing date: 2013-04-12
Publication date: 2016-03-17
Anticipated expiration: 2033-04-12
Also published as: AU2013204516A1

Abstract

A floor waste (10) for mounting on a drain opening in a floor member having a top surface and a bottom surface, including: a top floor mounting member (12) defining a 5 flow passage for mounting on the top surface of the floor member; a bottom floor mounting member for mounting on the bottom surface of the floor member and for being engaged with the top floor mounting member with the floor sandwiched between them; and a grate (16) mounted on the top floor mounting member (12) for extending across the flow passage while permitting water to pass through the grate 10 and into the flow passage, wherein the grate (16) and the top floor mounting member (14) are configured to receive an edge region of a sheet material forming a floor covering, between the grate member and top floor mounting member, for attaching the floor covering to the floor waste. 15 FIGURE 1 C p en ©h

Description

A FLOOR WASTE FOR DRAINING WATER FROM A FLOOR SURFACE OF A FLOOR ASSEMBLY FIELD OF THE INVENTION 5 This invention relates to a floor waste for draining water from a floor surface of a floor assembly. The invention also extends to a floor assembly including the floor waste and a method of providing a floor waste in a floor. The invention relates particularly to a vinyl floor waste that is used on a timber 10 floor having top and bottom surfaces and a floor covering of sheet material extending across the floor surface that is a sheet vinyl material. It will therefore be convenient to hereinafter describe the invention with reference to this example application. However at the same time it must be recognised that the invention is capable of broader application. For example the invention also extends to non 15 timber floors such as fibre-sheet that are accessible from above and below. The invention also extends to floors having floor coverings other than vinyl. For example the floor covering could be any floor covering that is in the form of a flexible sheet material. 20 DEFINITIONS In the specification the term "comprising" shall be understood to have a broad meaning similar to the term "including" and will be understood to imply the inclusion of a stated integer or step or group of integers or steps, but not the exclusion of any other integer or step or group of integers or steps. This definition 25 also applies to variations on the term "comprising" such as "comprise" and "comprises". 1 In this specification the term "grate"' is to be interpreted broadly. It shall be understood to include a grate or grating having a plurality of water apertures defined therein across its surface. It shall also be interpreted to include a tile grate having a tile and a peripheral water opening extending around the periphery 5 of the tile. It shall also be understood to cover a blank grate with a blank member extending across the grate. BACKGROUND TO THE INVENTION A floor waste is a plumbing fitting that is mounted on a floor to drain water from 10 the floor into a drain pipe. One type of floor waste is known as a vinyl waste. This type of floor waste is used when the floor is covered or lined with a flexible sheet material. The floor waste is configured around its circumference to receive an edge region of the sheet material and fixes it and seals it to the floor waste. Conveniently the edge region of the sheet material is sandwiched between two 15 components of the waste that are clamped to each other. This seals the sheet material to the floor waste so that all water on the floor surface is directed into the drain. The vinyl floor waste is fixed to the floor by means of fastening elements, e.g. in 20 the form of screws that are fastened to the floor on which the floor waste is mounted. This attachment of the waste to the floor has a limited strength as the fastening elements could be pulled out of the floor. It would therefore be advantageous if a vinyl floor waste could be devised that 25 could be more securely fixed to the floor on which it is mounted. A further disadvantage of many vinyl floor wastes is that they comprise a large body of brass and in recent times the cost of the brass material used in this body 2 has become expensive. It would therefore be advantageous if a floor waste could be devised that could be manufactured at a lower cost while still performing satisfactorily. 5 Accordingly it would be advantageous if a floor waste could be devised that may ameliorate one or more of the shortcomings of the vinyl floor wastes described above or provide the public with a choice. SUMMARY OF THE INVENTION 10 According to one aspect of this invention there is provided a floor waste for mounting on a drain opening in a floor member having a top surface and a bottom surface, including: a top floor mounting member defining a flow passage for mounting on the top surface of the floor member; 15 a bottom floor mounting member for mounting on the bottom surface of the floor member and for being engaged with the top floor mounting member with the floor sandwiched between them; and a grate mounted on the top floor mounting member for extending across the flow passage while permitting water to pass through the grate and into the flow 20 passage, wherein the grate and the top floor mounting member are configured to receive an edge region of a sheet material forming a floor covering, between the grate and the top floor mounting member, for attaching the floor covering to the floor waste. 25 The grate and the top floor mounting member may be engaged clamped to each other with the sheet material sandwiched there between to secure the sheet material to the floor waste in a sealing fashion. 3 The grate may comprise a grate mounting and a grate element mounted on the grate mounting. The grate element may include at least one opening through which water can 5 pass to enter the flow passage. For example the grate element may be an aperture grate having a plurality of elongate openings defined in the grate element. Instead the grate element may be a tile grate or a blank grate. The top and bottom floor mounting members may have complementary screw 10 thread formations that engage each other to move the mounting members towards and away from each other, whereby to clamp the waste to the floor member and also to release the mounting members from the floor member. The top and bottom floor mounting members may have complementary clamping 15 formations that engage respectively upper and lower surfaces of the floor member and clamp the floor member there between around the circumference of the drain opening. The top floor mounting member may include a substantially cylindrical bottom 20 member engaging portion defining an external screw thread on an external surface thereof, and the bottom floor mounting member may include a complementary internal screw thread. Suitably this is in the form of a back nut. A rotation of the back nut relative to the engaging portion may move the floor mounting members towards and away from each other. 25 The top floor mounting member may include an upward facing sheet clamping formation, and the grate mounting may include a complementary downward facing sheet clamping formation. 4 The upward facing sheet clamping formation may taper outward as it extends upward away from the bottom member engaging portion. In particular the upward facing sheet clamping formation may be configured to receive a cone. 5 The downward facing sheet clamping formation on the grate mounting may taper inward as it extends downward. In particular the downward facing sheet clamping formation may be configured in the form of a section of a cone such that it can be received by the complimentary upward facing sheet clamping formation. 10 The floor waste may include a sheet fixing arrangement for fixing the grate to the top floor mounting member with an edge region of a sheet material clamped there between. 15 The sheet fixing arrangement may comprise a plurality of sheet fixing elements that are passed through the grate mounting and into the top floor mounting member. The sheet fixing elements may be displaced into the top floor mounting member and then fixed to the top floor mounting member once they are inserted therein. 20 The floor waste may include a plurality of said sheet fixing elements located at spaced intervals around a circumferential edge region of the grate. For example there may be three sheet fixing elements located at even angular spacings around the grate. 25 The top floor mounting member may include sheet fixing passages for receiving the sheet fixing elements therein. 5 In one form the sheet fixing elements are screws that have a shank having an external screw thread, and the sheet fixing passages define complementary screw threads for engaging the screw threads on the screws. In one form the sheet fixing passages may include metallic inserts that define a bore having a screw 5 thread for engaging the screw thread on the screws. The floor waste may further include grate fastening elements for removably mounting the grate element on the grate mounting. 10 The grate fastening elements may be mounted on the grate element and may pass through grate fastener openings therein and into grate fastener openings defined in the top floor mounting member. The grate fastening elements may be angularly spaced from the sheet fixing elements described above. The grate fastening elements may be fastening screws having enlarged heads that can be 15 screwed into the grate fastener openings, and that can also be unscrewed and removed from the grate fastener openings to lift the grate element off the floor waste. According to another aspect of this invention there is provided a floor assembly, 20 including: a floor member having a top surface and a bottom surface; a drain opening extending between the top and bottom surfaces, for draining water away from the top surface; a sheet material forming a floor covering extending across the top surface; 25 a floor waste mounted on the floor member across the drain opening; including a top floor mounting member defining a flow passage mounted on the top surface; 6 a bottom floor mounting member mounted on the bottom surface which is engaged with the top floor mounting member with the floor member sandwiched between them; and a grate mounted on the top floor mounting member extending across the 5 drain opening while permitting water to pass through the grate and into the flow passage, wherein the grate and the top floor mounting member are configured to receive an edge region of the sheet material therein, and be clamped to each other, to seal the floor covering to the top floor mounting member. 10 The floor assembly may include a floor member having an even or constant thickness of 50mm-200mm across its surface. Typically the floor member may have a thickness of 60mm to 120mm. Typically the floor member may be made of a timber material. The bottom surface of the floor member may be accessible to a worker so that they can mount a bottom floor mounting member to the bottom 15 surface and clamp it to the floor member, e.g. during installation or during maintenance. The floor assembly may include a floor covering in the form of a flexible sheet material. The flexible sheet material may be a polymeric material, e.g. a vinyl 20 material, and may have a thickness of 2mm to 6mm. The floor waste may include any one or more of the features of the floor waste defined in the preceding aspects of the invention. 25 According to another aspect of this invention there is provided a method of installing a floor waste on a floor member having a top surface and an accessible bottom surface, and a floor covering of flexible sheet material on the floor member, and a drain opening in the floor member, the method including: 7 mounting a top floor mounting member on a top surface of a floor member and a bottom floor mounting member on a bottom surface of a floor member; engaging the top floor mounting member with the bottom floor mounting member with the floor member sandwiched therebetween; 5 placing a grate over the top floor mounting member; inserting an edge region of the floor covering between the grate and the top floor mounting member around the drain opening; and clamping the grate to the top floor mounting member with the edge region of the floor covering sandwiched therebetween to securely fix the floor covering to 10 the grate to the top floor mounting member in a sealing fashion. Engaging the top floor mounting member with the bottom floor mounting member may comprise rotating a backnut on the bottom floor mounting member that is engaged with a screw thread on the top floor mounting member. 15 Clamping the grate to the top floor mounting member may include passing grate fixing elements that are screws through the grate and into the top floor mounting member. 20 The grate may comprise a grate mounting and a grate element, and the method may include releasably mounting the grate element on the grate mounting. In turn releasably mounting the grate element on the grate mounting may include passing a plurality of grate fastening screws through the grate element and into 25 the grate mounting. 8 Further the method may include mounting a drain pipe on the bottom floor mounting member. Mounting a drain pipe on the bottom floor mounting opening may include receiving 5 an operatively lower end of the bottom floor mounting member within an open upper end of the drain pipe. The floor waste may include any one or more of the features of the floor waste defined in the preceding aspects of the invention. 10 Finally the invention also extends to a method of draining water from a top surface of a floor member covered with a floor covering of flexible sheet material, the method includes draining the water through a floor waste that is mounted to the floor member by being clamped to the top surface of the floor member and also a 15 bottom member. The floor waste may include any one or more of the features of the floor waste defined in the preceding aspects of the invention. 20 DETAILED DESCRIPTION OF THE INVENTION A floor waste and a floor assembly in accordance with this invention may manifest itself in a variety of forms. It will be convenient to hereinafter describe one embodiment of the invention in detail with reference to the accompanying drawings. The purpose of providing this detailed description is to instruct persons 25 having an interest in the subject matter of the invention how to carry the invention into practical effect. However it is to be clearly understood that the specific nature of this detailed description does not supersede the generality of the preceding broad description. In the drawings: 9 Fig 1 is a cross-sectional side view of a floor waste in accordance with one embodiment of the invention; Fig 2 is an upper three dimensional view of a top floor clamping member; 5 Fig 3 is a top plan view of the top floor clamping member in Fig 2; Fig 4 is a front view of the top floor clamping member in Fig 2; Fig 5 is an upper three dimensional view of a bottom floor clamping member; Fig 6 is a top plan view of the top floor clamping member in Fig 5; 10 Fig 7 is a front view of the top floor clamping member in Fig 5; and Fig 8 is an exploded three dimensional view of the floor waste of Figure 1; Fig 9 is a sectional view of the floor waste of Fig 1 installed on a floor assembly comprising a timber floor having a top and bottom surface and a vinyl layer extending across the top surface; and 15 Fig 10 is a sectional view of the installed floor waste of Fig 9 with the grate element removed to provide a user with access to an interior of the floor waste to remove a blockage or to retrieve a lost article. In Fig 1 reference numeral 10 refers generally to a floor waste in accordance with 20 the invention for mounting on a floor member in operative communication with a drain pipe. The floor waste 10 comprises broadly a top floor mounting member 12 defining a flow passage 13 there through for mounting on a top surface of the floor member 25 and a bottom floor mounting member 14 for mounting on a bottom surface of the floor member. In use the bottom floor mounting member 14 is clamped to the top floor mounting member 12 with the floor member sandwiched there between. The 10 floor waste 10 also includes a grate 16 mounted on the top floor mounting member 12 for extending across the flow passage 13 while permitting water to pass through the grate 16 and into the flow passage 13. The grate 16 and the top floor mounting member 12 are configured to be clamped to each other with a 5 sheet material sandwiched there between around their circumference as will be described in more detail below. These components of the floor waste 10 will now be described in more detail below. 10 The grate 16 comprises a grate mounting 20 and a planar grate element 22 mounted on the grate mounting 20. In the illustrated embodiment the grate element 22 is a conventional aperture grate which includes openings 24 through which water can pass to enter the flow passage 13. However it should be 15 understood that a tile grate having a single water opening around its perimeter or a blank grate could equally also be used. The top and bottom floor mounting members 12 and 14 illustrated in Figs 2 to 4 and Figs 5 to 8 respectively, have complementary clamping formations 26 and 28 20 that clamp respectively upper and lower surfaces of the floor member there between, around the circumference of the flow passage. The top and bottom floor mounting members 12 and 14 have complementary screw thread formations for clamping the waste 10 to the floor member. In 25 particular the top floor mounting member 12 includes a substantially cylindrical bottom member engaging portion 30 having an external surface defining an external screw thread. The bottom floor mounting member 14 includes a back nut 32 defining a complementary internal screw thread for engaging the external screw thread. This way, a rotation of the back nut 32 relative to the bottom 11 member engaging portion 30, moves the clamping formations 26 and 28 towards and away from each other to clamp the floor member there between. The back nut 32 can be rotated in an opposite direction to unlock the back nut 32. As shown in the drawings the back nut 32 can be rotated until it is rotated off the 5 bottom member engaging portion 30 and the member 14 is separated from the member 12. The top floor clamping member 12 also includes an upward facing sheet clamping formation 36 above the bottom member engaging portion 30. The sheet clamping 10 formation 36 tapers outward as it extends upward away from the bottom floor clamping member 14 and is broadly configured to receive a complementary member shaped like a section of a cone. The grate mounting 20 includes a complementary downward facing sheet 15 clamping formation 38. The downward facing sheet clamping formation 38 tapers inward as it extends downward towards the bottom floor clamping member 14 and is substantially shaped like a section of a cone. The floor waste 10 includes a sheet fixing arrangement for fixing the grate 20 mounting 20 to the top floor mounting member 12 with an edge region of the sheet material clamped there between. The sheet fixing arrangement further includes sheet fastener passages 37 in the grate mounting 20 and further sheet fastener passages 39 in the top floor clamping member 12 having closed inner ends. In the illustrated embodiment the sheet fastener passages 39 have internal screw 25 formations formed therein for engaging a complementary screw thread. The sheet fixing arrangement comprises a plurality of sheet fixing elements 40 that are passed through the sheet fastener passages 37 of the grate mounting 20 and into the sheet fastener passages 39 of the top floor clamping member 12. 12 The screws 40 have screw thread formations that engage with the walls of the sheet fastener passages 39 of the top floor mounting member 12 to fix the grate 16 to the top floor mounting member 12. In the illustrated embodiment there are three sheet fixing elements 40 that are screws that are angularly spaced around 5 the grate mounting 20 as shown in the drawings. The floor waste 10 further includes a grate fixing arrangement for fixing the grate element 22 on the grate mounting 20. The grate fixing arrangement comprises a plurality of grate fastener passages 35 in the grate element 22, and a plurality of 10 further grate fastener passages 44 in the grate mounting 20. The grate fixing arrangement further includes grate fixing elements in the form of grate fixing screws 42 that are passed through the grate fastener passages 35 and into the fastener passages 44. The screws 42 can be unscrewed and removed by a reverse action to enable the grate element 20 to be lifted off the waste 10 to carry 15 out maintenance on the floor waste and associated drain pipe. The screws 42 of the grate fixing arrangement are angularly off-set from the screws 40 of the sheet fixing arrangement when the waste is viewed in a plan view. This offset arrangement is shown most clearly in Fig 8. 20 The top floor mounting member as shown in Figure 8 includes an inner lip 62 for receiving an upper edge of a strainer basket. In some cases strainer baskets are desirable to prevent debris, solid waste and the like from entering the drain. Figs 9 and 10 illustrate a floor assembly including a drain pipe 55 and a drain 25 opening and having a floor waste as described above with reference to Figures 1 to 8 installed on the drain opening. The floor assembly is indicated generally by the reference numeral 50. The floor waste shall be referred to by the reference numeral 10 and unless otherwise indicated the same reference numerals will be used to refer to components of the floor waste as in the preceding drawings. 13 The floor assembly 50 comprises broadly a floor member 52 having a top surface 54 and a bottom surface 56 and a thickness of about 100mm to 200 mm. The floor member 52 has a substantially even thickness across its surface and in 5 particular the bottom surface 56 is accessible from the underside of the floor member 52. The floor assembly 50 includes a sheet material 60 forming a floor covering that extends across the top surface 54. The floor covering 60 forms a finish on the 10 floor member 52 and must be sealed to the floor waste 10 mounted in the drain opening in a water sealing fashion. The sheet material 60 has a peripheral edge region 61 around the drain opening that is inserted into a space defined between the grate 16 and the top floor mounting member 12. 15 The bottom floor mounting member 14 beneath the floor member 50 firmly clamps the floor waste 10 on the floor member 50 so that it cannot easily be dislodged. If the floor waste 10 does need to be removed, the back nut 32 on the bottom floor clamping member 14 can be unwound and detached from the bottom member engaging portion of the top floor mounting member 12. This enables the grate 16 20 and top floor mounting member 12 to be removed from the floor member 52 by lifting it off the floor member 52. The floor waste 10 is installed on a floor member 52 having a thickness of 100 to 200mm, such as a wooden or timber floor. It is important that the floor member 25 has a back surface or bottom surface against which the bottom floor mounting member 14 can bear. The floor member 50 has a drain pipe 55 located on the timber floor 50 and extends downward therefrom. An opening is defined in the timber floor member 50 around the drain pipe 55 for receiving the floor waste 10. The sheet material 60 of the floor covering also has an opening defined therein. 14 The bottom floor mounting member 14 is mounted over the drain pipe 55 beneath the floor member 50. The top floor mounting member 12 is mounted over the top of the floor member 50 and passes though the opening in the floor member 50. 5 The bottom member engaging portion 30 and the back nut 32 are engaged and the back nut 32 is screwed onto the screw thread of the engaging portion 30. This fastening process continues until the bottom clamping portion 28 bears up against the bottom surface 56 of the floor member 50 and the top clamping portion 26 bears against the top surface 54. 10 The edge region 61 of the sheet material 60 is received in a space defined between the grate 16 and the top floor clamping member 12. Specifically the sheet material is inserted into the space between the upward sheet clamping formation 36 on the member 12 and the downward facing sheet clamping 15 formation 38 on the grate mounting 20. The fastening screws 40 are passed through the passages 37 of the grate mounting 20, and into the fastener passages 39 of the top mounting member 14 to firmly seal the sheet material 60 to the member 14. Further the grate fixing 20 screws 42 are passed through the passages 35 of the grate element 22 and into the passages 37 of the grate mounting 20 to releasably fix the grate element 20 to the grate mounting 20. The screws 42 are angularly offset from the screws 40 as shown in Fig 8. 25 The top and bottom floor mounting members can conveniently and economically be made by injection moulding of polymeric material, e.g. polyvinyl chloride or PVC. The grate mounting can also be manufactured by injection moulding of PVC material or by moulding a metallic material such as brass. The grate element can be made of a metallic material. 15 In use, water located on the floor member 52 is able to drain through the grate 16 into the drain pipe 55. The sheet material 60 is tightly sealed to the waste 10 around its circumference. 5 Figure 10 shows how the grate element 22 can be removed to provide access to the interior of the floor waste and the drain pipe. If access to an internal region of the floor waste is required, the fastening screws 42 with their heads on the grate element 22 can be removed. This is illustrated in Fig 9. Each of the screws 42 10 can be screwed out of their mountings received in the top floor mounting member 12 enabling the grate element 22 to be lifted off. Once maintenance has been completed, the grate element 22 can be fixed on the grate mounting 20 once more by screwing in the fastening screws 45. 15 An advantage of the floor waste described above with reference to the drawings is that it has top and bottom clamping members that enable the floor waste to be firmly and securely clamped to the floor member. By virtue of the fact that it is secured both above and below the floor member, that it cannot easily be pulled out of the floor and be removed. 20 This may be compared to prior art wastes that must be screwed or otherwise fixed to the floor. Another advantage of the floor waste described above is that the top and bottom 25 clamping members can be injection moulded from a plastics material such as PVC at a reasonable cost. This avoids the need for a large body of solid brass which is expensive. 16 It will of course be realized that the above has been given only by way of illustrative example of the invention and that all such modifications and variations thereto, as would be apparent to persons skilled in the art, are deemed to fall within the broad scope and ambit of the invention as is herein set forth. 5 17

Claims

1. A floor waste for mounting on a drain opening in a floor member having a top surface and a bottom surface, including: a top floor mounting member defining a flow passage for mounting on the top surface of the floor member; a bottom floor mounting member for mounting on the bottom surface of the floor member and for being engaged with the top floor mounting member with the floor member sandwiched between them; and a grate mounted on the top floor mounting member for extending across the flow passage while permitting water to pass through the grate and into the flow passage, wherein the grate and the top floor mounting member are configured to receive an edge region of a sheet material forming a floor covering, between the grate member and top floor mounting member, for attaching the floor covering to the floor waste.

2. A floor waste for mounting on a drain opening in a floor member according to claim 1, wherein the grate and the top floor mounting member are configured to be clamped to each other with the sheet material sandwiched there between to secure the sheet material to the floor waste in a sealing fashion.

3. A floor waste for mounting on a drain opening in a floor member according to claim 2, wherein the grate comprises a grate mounting and a grate element mounted on the grate mounting.

4. A floor waste for mounting on a drain opening in a floor member according to claim 3, wherein the grate element includes at least one opening through which water can pass to enter the flow passage.

5. A floor waste for mounting on a drain opening in a floor member according to claim 4, wherein the top and bottom floor mounting members have complementary screw thread formations that engage each other to move 18 the mounting members towards and away from each other, whereby to clamp the waste to the floor member and also to release the mounting members from the floor member.

6. A floor waste for mounting on a drain opening in a floor member according 5 to claim 5, wherein the top floor mounting member includes a substantially cylindrical bottom member engaging portion defining an external screw thread on an external surface thereof, and the bottom floor clamping member includes a back nut defining a complementary internal screw thread, and a rotation of the back nut relative to the engaging portion 10 moves the floor mounting members towards and away from each other.

7. A floor waste for mounting on a drain opening in a floor member according to claim 6, wherein the top floor mounting member includes an upward facing sheet clamping formation, and the grate mounting includes a complementary downward facing sheet clamping formation, and a sheet 15 fixing arrangement for fixing the grate to the top floor clamping member with an edge region of a sheet material clamped there between.

8. A floor assembly, including: a floor member having a top surface and a bottom surface; a drain pipe having a drain opening on the top surface, for draining 20 water away from the top surface; a sheet material forming a floor covering extending across the top surface; a floor waste mounted on the floor member across the drain opening; including a top floor mounting member defining a flow passage mounted on 25 the top surface; a bottom floor mounting member mounted on the bottom surface which is engaged with the top floor mounting member with the floor sandwiched between them; and 19 a grate mounted on the top floor mounting member extending across the drain opening while permitting water to pass through the grate and into the flow passage, wherein the grate and the top floor mounting member are configured to receive an edge region of the sheet material therein, and be 5 clamped to each other, to seal the floor covering to the top floor clamping arrangement.

9. A method of installing a floor waste on a floor member having a top surface and an accessible bottom surface, and a floor covering of flexible sheet material on the floor member, and a drain pipe having a drain opening 10 adjacent to the floor member, the method including: mounting a top floor mounting member on a top surface of a floor member and a bottom floor mounting member on a bottom surface of a floor member; engaging the top floor mounting member to the bottom floor 15 mounting member with the floor member sandwiched therebetween; placing a grate over the top floor mounting member; inserting an edge region of the floor covering between the grate and the top floor mounting member around the drain opening; and clamping the grate to the top floor mounting member with the edge 20 region of the floor covering sandwiched therebetween to securely fix the floor covering to the grate to the top floor mounting member in a sealing fashion.

10. A floor waste for mounting on a drain opening in a floor member having a top surface and a bottom surface substantially as herein described in the 25 detailed description with reference to the drawings. 20