AU680896B2

AU680896B2 - Wall stud and nogging

Info

Publication number: AU680896B2
Application number: AU64813/94A
Authority: AU
Inventors: James Christopher Adams; Paul Darren Hanks
Original assignee: BHP Steel JLA Pty Ltd
Current assignee: BHP Steel JLA Pty Ltd
Priority date: 1993-06-25
Filing date: 1994-06-15
Publication date: 1997-08-14
Anticipated expiration: 2014-06-15
Also published as: AU6481394A

Description

1 Regulation 3.2

AUSTRALIA

Patents Act 1990

ORIGINAL

COMPLETE SPECIFICATION STANDARD PATENT Invention Title: "WALL STUD AND NOGGING" The following statement is a full description of this invention, including the best method of performing it known to the Applicant:- TECHNICAL FIELD This invention relates to wall frames of the kind fabricated from a plurality of elongate structural members, namely a substantially horizontal floor S• plate, a substantially horizontal roof or ceiling plate spaced above the floor plate, a plurality of upright, spaced apart studs extending from plate to plate, and a plurality of spaced apart substantially horizontal noggings extending from each stud to its neighbouring stud or studs.

More particularly the invention relates to such frames for use in low rise buildings, for example one or two storey domestic dwellings, wherein the frames are relatively lightly loaded and the frame members may be partially or fully manufactured from cold roll-formed strips of light gauge sheet metal, for Sexample galvanised steel.

i r BACKGROUND ART In the construction of such buildings every effort is made to keep costs down, and this extends not only to the materials of the wall frames but also to the labour involved in assembling and erecting the frames. A substantial part of the labour resides in the affixture of the many noggings to the studs.

Traditionally the noggings have been comparable to the studs in crosssectional shape and size, if only to permit the noggings to be secured to the studs by conventional fasteners such as self-tapping screws or the like. This is so notwithstanding that the noggings are only lightly loaded axially (that is in longitudinal tension or compression) in comparison with the other frame members, being called upon only to control lateral and torsional movement of the studs, such as would lead to buckling thereof, rather than to resist the main weight loads or flexural wind loadsimposed on the frames. Indeed the greatest stresses likely to be imposed on the noggings throughout their life are bending 15 stresses due to the weight of persons using them as ladders when working on the building before the walls are clad, even though designing noggings for the weight of a person is not a design code requirement.

0*oe DISCLOSURE OF INVENTION The present invention takes advantage of the relatively light axial 20 loading on the noggings to provide a nogging and stud combination wherein the nogging uses less material than conventional noggings and, more importantly, wherein the nogging may be affixed to the stud, or to a sheet metal component part thereof if the stud or section thereof is a composite of different materials, simply and quickly without the need for skill on the part of the assembler, and without the need for separate or special fasteners.

'VT O The invention consists in combination a sheet metal wall stud and a hogging, said wall stud comprising a sheet metal web pierced by a nogging clearance hole through which said nogging may extend, said clearance hole is partly defined by at least one tab integral with said web and projecting therefrom, said nogging having at least one orifice therein, characterised in that said nogging extends through said nogging clearance hole, and in that said at least one tab extends through said at least one orifice in the nogging.

BRIEF DESCRIPTION OF THE DRAWINGS By way of example, two embodiments of the above described invention are described hereinafter with reference to the accompanying drawings.

Figure 1 is a cross-sectional view of a wall stud according to the invention.

Figure 2 is a cross-sectional view of a nogging useable in combination with the stud of figure 1.

Figure 3 is a plan view of the stud of figure 1 in combination with the "nogging of figure 2.

Figure 4 is a view similar to figure 2 of another nogging useable in combination with other studs according to the invention.

Figure 5 is a detail view taken on line 5-5 of figure 3, drawn to s larger 20 scale.

Figure 6 is a view similar to figure 5 of another combination according to the invention including the nogging of figure 4.

BEST MODE OF CARRYING OUT THE INVENTION The embodiment illustrated by figures 1, 2, 3 and 5 comprises a generally channel sectioned wall stud 7 which has been cold roll-formed from a sheet metal strip, for example a strip of steel coated with zinc or an alloy of aluminium and zinc. The stud 7 comprises a web 8 and two flanges 9. The web 8 and flanges 9 may be shaped with ribbed or grooved main parts and, in the case of the flanges, with subsidiary edge flanges, to enhance their stiffness.

In accordance with the invention a nogging clearance hole 10 is provided in the web 8 at each point where a nogging 11 is to be affixed thereto.

The nogging 11 may be roll-formed from material the same as or similar to that of the stud 7. It is also generally channel sectioned, comprising a web 12 and flanges 14. The web 12 is pierced by clearance orifices in the @*form of slots 15 arranged in two rows extending longitudinally of the 15 nogging 11. The individual slots 15 are regularly spaced apart along the rows.

9 o~o° The nogging clearance hole 10 is shaped to suit the nogging 11. To that end it is partly defined by two tabs 16 projecting from the web 8 and lying $age in the plane thereof. Each tab 16 is able to enter any one of the slots 15, and the tabs are spaced apart (centre to centre) by substantially the same distance 20 as are the two rows of slots 15. Thus the tabs 16 may simultaneously enter o"*each of any pair of slots 15 at corresponding locations in their respective rows.

For preference each tab 16 is tapered, or round ended at the tip, to facilitate its t initial entry into a slot 15. Furthermore it has a nogging retainer notch, or is otherwise shaped, as at 17, at some distance from its tip to provide a retaining effect once it has entered a slot 15 by a greater distance. The tabs are tapered such that they will flex towards each other as a downward force is applied to the nogging and will spring back after the notch passes through the nogging

SRA%/

s WLJ0 T T(A3U( slots. The notches will then prevent the nogging from being dislodged when being transported or in service.

The nogging clearance hole 10 is further suited to the nogging 11 in that the nogging may be passed through the hole, with its web 12 clear of the tabs 16, and then moved laterally to cause the tabs 16 to fully enter a selected pair of slots 15, whereupon the nogging flanges 14 fit neatly within the confines of the hole 10 and make contact with the web 8 at 18. Thus the stud 7 is effectively secured to the nogging 11 and the latter is effectively prevented from twisting about its Icngitudinal axis by the stud, all without need for skill on the part of the person assembling the wall frame or the provision of separate fasteners.

In practice, the studs would preferably be prefabricated, with nogging clearance holes at appropriate positions along their length, before delivery to the building site. Also the nogging members may be prefabricated as custom 15 made elements of the particular wall frame for which they are intended. In that event the nogging member may extend for the full length of the frame, and may *0 only be slotted at positions corresponding to those of the studs. On the other hand the noggings may be provided as stock material intended to be cut to length at site. In this event it is preferred for the stock material to be slotted as shown, so that appropriately positioned slots may be selected from the plurality available.

S0* The embodiment illustrated by figures 4 and 6 is similar in concept to the first described embodiment and need not be described in detail, It differs °"from the first described embodiment primarily in the shape of the nogging 25 clearance hole and the positioning of the tabs of the stud and the tab clearance slots of the nogging.

Thus a nogging 20 of inverted channel section has its clearance slots 21 formed in its channel flanges, and a stud, which apart from the shape of its nogging clearance holes may be the same as stud 7, has its tabs 22 projecting into the sides of generally rectangular clearance holes 23.

To some extent this second described embodiment is more advantageous than the first as it provides for a somewhat more positive retention of the nogging to the stud. The flanges of the nogging can be sprung together by hand to insert the tabs, and the flexural rigidity of the flanges then prevents the nogging from being dislodged when being transported or in service.

In each embodiment the nogging and stud are preferably sized such that the nogging fits snugly between the lipped flange of the stud section. The nogging thereby provides some torsional restraint to the stud cross-section.

*0 *o.

*0 r--

Claims

1. In combination a sheet metal wall stud and a nogging, said wall stud comprising a sheet metal web pierced by a nogging clearance hole through which said nogging may extend, said clearance hole is partly defined by at least one tab integral with said web and projecting therefrom, said nogging having at least one orifice therein, characterised in that said nogging extends through said nogging clearance hole, and in that said at least one tab extends through said at least one orifice in the nogging.

2. A combination according to claim 1 wherein the nogging comprises two rows of orifices and said nogging clearance hole is partly defined by two tabs projecting from said web and lying in the plane of its central strip thereby each tab is able to enter any one of said orifices, ar.d the tabs are spaced apart substantially the same distance as are the two rows of orifices. 15 3. A combination according claim 1 wherein the nogging is cold roll- formed from sheet metal strip and is of generally channel section, comprising a web and two flanges wherein the nogging web is pierced by orifices arranged in two rows extending longitudinally of the nogging and the individual i orifices are regularly spaced apart along the rows. a.* 20 4. A combination according claim I wherein said nogging is of inverted channel section having tab clearance orifices formed in its channel flanges, and said stud having two tabs projecting towards one another from opposite sides of said nogging clearance hole. a 8 A combination according to any one of claims 2 to 4 wherein the tabs may simultaneously enter each of any pair of orifices at corresponding locations in the nogging.

6. A combination according to claim 3 wherein in assembly said nogging may be passed through said nogging clearance hole, with its web clear of the tab or tabs, and then moved laterally to cause the tab or tabs to fully enter a selected orifice or pair of orifices, whereupon said nogging flanges fit neatly within the confines of the hole and make contact with the web.

7. A combination according to any one of claims 1 to 6 wherein said nogging clearance hole is of generally rectangular section.

8. A combination according to any one of the preceding claims wherein the or each tab is tapered, or round ended at the tip.

9. A combination according to any one of the preceding claims 15 wherein the or each tab has a nogging retainer notch spaced from its tip. 9O Applicant BHP STEEL (JLA) PTY LTD Date 13 May 1997 Attorney CARTER SMITH BEADLE 6* *9 -I ABSTRACT A generally channel sectioned wall stud 7 which has been cold roll- formed from a sheet metal strip comprises a web 8 and two flanges 9. The web 8 has a substantial central strip that is planar. A nogging clearance hole 10, is provided in the central strip of the web 8 at each point where a nogging 11 is to be affixed thereto. The nogging 11 may be roll-formed from material the same as or similar to that of trie stud 7 and is also generally channel sectioned, comprising a web 12, with a flat ended central rib 13 formed therein and flanges 14. The web 12 is pierced by clearance slots 15 arranged in two rows extending longitudinally of the nogging 11. The individual slots are regularly spaced apart along the rows. The nogging clearance hole 10 is shaped to suit the nogging 11. To that end it is partly defined by two tabs 16 projecting from the web 8 and lying in the plane of its central strip 13. Each tab 16 is able to enter any one of the holes 15, and the tabs are spaced apart (centre to centre) by substantially the same distance as are the two rows of holes 15. Thus the tabs 16 may simultaneously enter each of any pair of holes 15 at corresponding locations in their respective rows. Figure '9. 9 9 *9 9 9 99 ic. i-