AU2020200955B2

AU2020200955B2 - Building Component and Method

Info

Publication number: AU2020200955B2
Application number: AU2020200955A
Authority: AU
Inventors: Terence Beresford Hayes
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-28
Filing date: 2020-02-10
Publication date: 2023-01-12
Anticipated expiration: 2034-10-23
Also published as: AU2020200955A1; AU2014253524A1; AU2018264111A1

Abstract

A hollow hob with a rectangular cross-section is secured to the floor slab of a building for supporting a glazed frame such as a shower screen ora balcony windowand door. The hob has bores for receiving fixing bolts. Right anglejoints in the hob are described. When fitted outside the fitting sequence includes the insertion of a drip tray between the hoband frame to divert rain and a bed of sealant to make the hob waterproof. 2014-103,C:\Uses\Sulenc\Docmets\SPECflICATIONSuhyes.cp.wpdJ,9

Description

TITLE OF INVENTION

Building Component and Method

TECHNICAL FIELD

[0001] This invention concerns the preparation of floor slabs in buildings to take glazed frames such as balcony doors and windows and also in showers,

BACKGROUND

[0002] Balconiesand showers pose particular problems in the course of building construction especially multi-storey apartments, The windows of the balcony must be raised above floor level because they could leak and admit rain into the apartment adjacent the balcony. Likewise showers require awaterproof cavity which is connected to the drainage system of the building, It is customary to make hobs for the window frames and'shower cubicles in the course of building the slab floor. Inevitably measurement mistakes cast the hobs in the wrong place, There is no alternative but to smash the hob and to cast a replacement in the correct place.

[0003] This is an unwelcome extra cost tothe builder. The correction is sometimes visible and the delay slows other phases of construction,

SUMMARY OF INVENTION

[0004] According tothe method aspect of the invention there is provided a method of installing a hob on a building slab for receiving a glazed frame by cutting the hob to size and securing it in the required position whereby the glazed frame is raised above the slab surface,

[0005] Preferably the hob is secured to the slab so as to be waterproof. The hob may besecured by fasteners on a bed of sealant,

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[0006] A drip tray may be inserted between the bottom of the frame and the top of the hob, Packers may be inserted between the tray and the top of the hob.

[0007] The slab may be a floor slab in a building in the balcony area. The slab may instead be in the shower area.

[0008] When the glazed frame is part of a balcony the method includes attaching a channel section cap to the floor slab of the next higher storey.

[0009] The apparatus aspect of the invention provides a hob for supporting a glazed frame above floor level comprising an extruded polymeric tube with a top wall and a parallel bottom wall, both walls having a series of bores for the reception of fasteners, one edge of the top face having a bevel for accommodating sealant.

[0010] Thematerial of choice is plastic because itis capable of being'rendered weather resistant. An alternative is a non-corrodible metal alloy such as an aluminium alloy. Such alloys are extrudable into the cross-sections suitable for a hob.

[00111 Ina preferred version, one wall has a central axis groove for accommodating the heads of screws and the opposite parallel wall has a central axial trench for accommodating th6 heads of bolts. Preferably the trench is wide enough to take the bolt and a socket type tightener. The tube is merely inverted to present the wall suited to the available screws or bolts.

[0012] Instead of drilling bores in the top and bottom walls the tube may have a flange which is an extension of one of the walls in order to contact the slab. The flange itself is drilled to permit the insertion of an anchor. When used in a shower this version will be positioned so that the flange and anchor is covered by subsequent screeding and tiling finishes.

[0013] For some installations a hybrid tube is extruded having atop wall with a central axial groove for receiving screw anchors and a bottom wall with a flange extending from one longitudinal edge which flange contacts the slab floor and is capable of being anchored to the

2014-10-23,C:\Users\Shurene\DocumenIs\SPECWIJCATIONSIhayescappd,2 slab by fasteners.

[0014] in the tubes with and without a flange the cross-section may be 90w x 80h mm.

Advantageous Effects of Invention

[0015] 1. Reduces labour costs by avoiding errors in casting hobs as part of the floor slab.

[0016] 2. Speedsconstruction.'Thehotcanbeaddedataconvenientstageofconstructionand logically later than the floor slab creation stage. Its currentearly presenceis anobstruction to all wheeled and pedestrian traffic in the building,

BRIEF DESCRIPTION OF DRAWINGS

[0017] Some embodiments of the invention are now described with reference to the accompanying drawings, in which:

[0018] Figure 1 is a front view ofthe outside wall of a building in the course of construction showing the balcony which is to receive a window and door. The balustrade is omitted for clarity.

[0019] Figure 2 is the same as Figure 1 but with a hob in position ready to receive a window and door.

[0020] Figure 3 is the same view as Figure 2 with thewindow and door in position on the hob.

[0021] Figure 4 is a section through the hob and the frame supported by the hob.

[0022] Figure 5 is a cross-section of a hob bored to receive a DYNABOLT@ sleeve anchor.

[0023] Figure 6 is a plan of a fragment of a shower with a hob showing a mitre joint.

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[0024] Figure 7 is a cross-section of a hob with a bolt groove in one face and bolt groove in the opposite face.

[0025] Figure 8 is a cross-section of the hob in Figure 7 inverted.

[0026] Figure 9 is a cross-section of a hob with a longitudinal edge flange.

[0027] Figure 10 is a cross-section of a hob shown in Figure 9 and a groove in the top wall

[0028] Figure 11 is an exploded perspective of a pair of mitred hobs with an end cap and a connector for the mitre joint.

DESCRIPTION OF EMBODIMENTS

[0029] Referring nowto the drawings, innmulti-storeyapartments with balconies 2, the exterior wall 4 has a series of apertures 4 usually one above the other which extend from one floor slab 6 to the next, The interior walls 8 of the apartment form the sides of the balcony extending inwards in the slab.

[0030] In Figure 1 the slab 6 and walls 8 are ready to receive the balcony window and door frame 10 shown in Figure 3. All that is required to prepare the balcony to receive the frame is for the distance between the side walls 8 to be measured and the hob 12 cut to length from a piece brought into the building.

[0031] Referring now to Figure 4, channel-section frame cap 14 is likewise measured andcut. The hob 10 is screwed to the floor slab. The cap 14 is likewise screwed to the ceiling slab. Verticality is easy to mark out.

[0032] Referring now to Figure 5, the hob isa HDPP extrusion 100ih x 80w mm with a wall thickness of 10mm, The top face 16 is drilled to provide a series of bores 18 which are countersunk to accept DYNABOLT@ fasteners 20. The corner between the top face 16 and the

20119l-23C:\Ust\$enDocuents\SPCiICATINSayes.cap.wpd4 back face 22 has a bevel24.

[0033] The hob is aligned to its mark out positionand the bores 18 are used as guides to drill the floor slab, The holes are enlarged to take the fastener plug 26 and the hob is bolted into position on a bed of silicone sealant,

[0034] Insertion of the glazed frame begins by lifting the drip tray 28 to the exact height and levelling it by packing. The tray has a seat channel of a width equal to the width of the glazing frame. The channel has perforations along its front edge to allow water to drain. During fitting the top of the frame is inserted into the ceiling channel, tilted to overlie the seat channel and then dropped into the seat channel. The top wall of thebob receives fixing screws which pass through the drip tray allowing the existing installation procedure used for concrete hobs to be retained unchanged.

[0035] Referring now to Figure 6, the shower slab 34 is drilled to receive the hob 10 which has a initred corner 36. This is easily sawn on site. The open end of the hob is closed if need be by a moulded end cap 38,

[0036] Referring nowto the Figures 7 and 8 of the drawings, the hob 10 is an 80h x 90w nun extrusion with rounded corners 12. Top wall 16 has an axial trench 40 about 12mm deep. A centre line in the trench indicates where to drill, The trench is wide enough to take an M8 DYNABOLT@ and torque socket, The opposite bottom wall has a shallow groove 42 with a centre line. The sides 44 ofthe groove are inclined to receive the head of an M8 DYNABOLT® sleeve anchor with a screw head. The bob is simply inverted to present the trench 40 or the groove 44 depending upon the fasteners availability,

[0037] Referring nowto Figure 9, the hob is 80h x 90wmm and has a 20mm wide flange 46 extending from one wall 48 of the hob 10, A centre line is incorporated to facilitate drilling, This version is intended for use in buildings where the floor may be'screeded with concrete or the anchor otherwise covered.

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[0038] Afurther variantisshown inFigure 10where the top wallhas an axial groove 44 and the bottom wall hasa flange 46. Forheavy glazed frames the wall thickness is increased,

[0039] Figure I Ishows how the hob is cut to form amitrejoint 50which is stabilised bythe insertion of a moulded plate 52 which has two sets of fingers 54 extending from the plate at 90 degrees so as to project into the interior of the hob. Adhesive is applied to the fingers and the joint is allowed to set, An end cap 56 with fingers 58 is a push fit in the hob interior.

[0040] It is to be understood that the word "comprising" as used throughout the specification is to be interpreted in its inclusive form, ie. use of the word "comprising" does not exclude the addition of other elements.

[0041] It is to be understood that various modifications of and/or additions to the invention can be made without departing from the basicnature of the invention. These modifications and/or additions are therefore considered to fall within the scope of the invention.

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Claims

1. A structural member adapted for use as a hob attachable to a floor slab for supporting a glazed frame thereon comprising: an extruded polymeric tube having: a top support wall for receiving the glazed frame and a parallel bottom wall to be received on the floor slab, both the top support wall and the bottom wall having a series of bores formed therein at regular intervals along a length of the tube; a pair of parallel opposing side walls extending between the top support wall and the bottom wall, each of the parallel opposing side walls are configured such that they form an angled surface at each edge along the top support wall of the extruded polymer tube to facilitate the application of a sealant thereon and a plurality of fasteners, each fastener extending through one of said bores formed in the top support wall and a corresponding one of said bores formed in the bottom wall to secure the extruded polymeric tube to the floor slab.

2. A hob as claimed in Claim 1, wherein both the top support wall and the bottom wall have a central axis groove for accommodating the fasteners for securing the extruded polymeric tube to the floor slab such that the fasteners are recessed from a surface of the top support wall and the bottom wall.

3. A hob as claimed in Claim 1, wherein at one bottom edge where a parallel side wall connects with a bottom wall of the extruded polymeric tube, a flange is formed therealong, the flange being an extension of the bottom wall and configured to facilitate an alternative means for securing the extruded polymeric tube to the floor slab.

4. A hob as claimed in any one of Claims 1-3, wherein an end cap closes the extruded polymeric tube.

5. A hob as claimed in any one of Claims 1-4, wherein a cross-section of the extruded polymeric tube is 90w x 80h mm.