1 SCAFFOLDING METHOD AND APPARATUS Technical Field This invention relates generally to a scaffolding method and apparatus and in particular to a scaffolding method and apparatus for use in association with the 5 construction of buildings and for maintenance or repair of buildings after construction. The present invention has typical application to domestic buildings such as houses but may be applied to the erection of other buildings. Background Art Scaffolding is commonly used in the erection of buildings including domestic 10 buildings or houses and in many circumstances, it is mandatory to use scaffolding during construction of building. For example, regulations exist which require the use of scaffolding around the periphery of a roof or roof frame of a building such that roof tillers or other roof workers can work in safety and be prevented from falling from a roof or roof frame. 15 Other scaffolding which is used in the erection of a building is in the form of an independent scaffolding structure which comprises a plurality of posts and rails which are erected around the periphery of a building. Often it is not practical for a builder to own scaffolding because of the large number of components which are required and further because of the storage and transport requirements for such scaffolding 20 components. Usually therefore these structures are required to be hired from a supplier however not only are such structures expensive to hire but they are also difficult and time consuming to erect. Other systems which have been proposed particularly for roof protection are designed to be attached to the wall frames of a building to form a walkway and handrail 25 system around the roof of the building to protect tradesman installing fascia and gutter to the building or for working on walls however as these systems are required to be attached to the building frame, they are only suitable for buildings during the erection thereof and not for already erected or clad buildings. It is also often necessary for work to be carried out on a building after erection 30 thereof for example for replacement or maintenance of gutters or windows. In such circumstances, it is often necessary to use conventional or known scaffolding as referred to above which brings the above described disadvantages. It would be advantageous therefore if an improved scaffolding method and AMR307003P-24012011 2 apparatus were available which would overcome the above disadvantages or at least provide an effective alternative to the prior art. Summary of the Invention The present invention therefore provides in a first aspect, scaffolding apparatus 5 for use with a building of the type having a frame comprising a plurality of upright frame members or posts characterised in that said upright frame members or posts comprising upright scaffolding members or posts of said scaffolding apparatus for use both during and after building construction. Preferably the scaffolding apparatus including a plurality of scaffolding arm 10 assemblies which are adapted to be releasably connected to the upright frame members or posts to extend therefrom along the side/s of a building frame . Preferably each arm assembly comprise a main arm which when an arm assembly is connected to the upright frame member or post extends substantially horizontally from the upright frame member of post whereby the main arm can support a walkway or the like which extends along the 15 building. The scaffolding arm assembly may be associated with a connecting bracket for connection of the arm assembly to the upright frame member of post. Alternatively, the scaffolding arm assembly may be connected directly to an upright member or post. Most preferably the frame members or posts of the building frame comprise 20 metal frame members of galvanised steel, aluminium or any other suitable metal. Preferably the frame members or posts include a plurality of vertically spaced apart apertures. The spaced apart apertures are located one above the other typically in a flange or web of the upright frame member or post. Preferably an arm assembly of the scaffolding apparatus is adapted to be 25 connected to the frame members of the posts through one or more of the vertically spaces apart apertures. Preferably an arm assembly of the scaffolding apparatus is connected to the post through one or more connectors or locators adapted to cooperate with one or more of the apertures. Each connector or locator may comprise a pin or stud which is adapted to be received in an aperture of the upright scaffolding member or post. 30 The connectors or locators may be adjustable connectors or locators. Most preferably the arm assembly includes a pair of connectors or locators arranged one above the other. Preferably the or the uppermost pin or stud includes a portion which is adapted to hook in behind an aperture to support the arm assembly in a position extending AMR307003P-24012011 3 outwardly from the upright member of post. The pin or stud portion may comprise a downwardly or upwardly extending portion of the pin or stud. The pin or stud for this purpose may be of a right angled configuration. The pin or stud may be provided on the main arm or on the connecting bracket of the arm assembly. Typically the pin or stud 5 extends from a facing plate adapted to abut or be juxtaposed with the post (or cladding as referred to below). Preferably an arm assembly also includes a bracing arm extending from the main arm. Preferably the bracing arm terminates in a pin or stud adapted to be received in a further aperture in the upright frame member or post to serve as a locator to locate the 10 bracing arm and support the main arm of the arm assembly in a substantially horizontal attitude. The bracing arm may also include a facing plate from which the pin or stud extends, this facing plate also being adapted to abut or be juxtaposed with the post (or cladding). After construction of the frame of the building and application of cladding to the 15 building frame, openings are preferably provided in the cladding which is aligned with respective apertures in the upright members or posts. Preferably the respective pins or studs of the arm assemblies are adapted to be passed through or into the openings in the cladding for engagement with or location in the apertures in the upright members or posts such that the arms assemblies of the scaffolding apparatus may engage with the 20 upright posts through the cladding of the building. Preferably in the engaged position of the arm assembly, the respective facing plates are juxtaposed with the cladding. Preferably the openings in the cladding are adapted to be closed by means of removable plugs or caps. The openings thus are not usually seen however access to the openings and the apertures of the upright posts or members is available after the building 25 is clad by removing the plugs. The arm assemblies of the scaffolding apparatus thus may be engaged with the upright members or posts after the building is clad. Preferably the or the uppermost pin or stud is adjustable to enable cooperation with the post both when clad and unclad. The pin or stud for example may be threaded to enable adjustment inwardly and outwardly relative to the arm assemblies. 30 Alternatively, the or the uppermost pin or stud may be of an extended fixed length so as to suit engagement with a clad building frame. When used in association with an unclad frame, spacers may be interposed between a or the facing plates of the arm assemblies and the post. The spacers may be of wedge shaped configuration to enable firm location AMR307003P-24012011 4 of the spacers between a facing plate and post and to compensate for different wall thickness of the post or cladding. The spacers may also be used with a clad frame to be interposed between the or a facing plate and cladding. The scaffolding apparatus may also include a corner scaffolding arm assembly 5 adapted to engage with a corner post. A corner scaffolding arm assembly may include a comer mounting bracket in the form of an angled sectioned member, the flanges of which may be juxtaposed with adjacent faces of the comer post. The mounting bracket may be provided with spaced apertures in its flanges which may be aligned with respective apertures in the post. The mounting bracket may be secured to the post by 10 means of respective side scaffolding arm assemblies adjacent the corner post with the pins or studs of the side scaffolding arm assemblies being inserted through the apertures in the mounting bracket for engagement with the apertures in the comer post, the flanges of the mounting bracket being sandwiched between the facing plates of the side arm assemblies and post flanges. 15 Preferably the arm of each scaffolding arm assembly includes a socket at its outer end for receipt of a post of a guard rail assembly or panel. Preferably the arm assembly may also include brackets for supporting horizontal members for interconnection of adjacent arm assemblies. The present invention provides in a further aspect, a method of providing 20 scaffolding for use with a building of the type having a frame comprising a plurality of upright frame members or posts characterised in that said upright frame members or posts are adapted for use as the upright scaffolding members or posts of said scaffolding both during and after building construction. In accordance with the method of the invention, respective scaffolding arm 25 assemblies are engageable with the upright frame members or posts to extend outwardly therefrom when the frame of the building is exposed during construction of the building. Furthermore the scaffolding arm assemblies are engageable with the upright frame members or posts after the upright frame members have been externally clad. Preferably the method includes the step of engaging the scaffolding arm assemblies with 30 the upright frame members or posts through the external cladding. Brief Description of the Drawings In order that the invention may be more readily understood and put into practical effect, reference will now be made to the accompanying drawings which illustrate a AMR307003P-24012011 5 preferred embodiment of the invention and wherein Fig. 1 is an exploded isometric view of scaffolding apparatus according to an embodiment of the invention associated with a building frame prior to cladding; Fig. 2 is an enlarged isometric view of a connecting bracket of the scaffolding 5 apparatus; Fig. 3 is a partially sectioned side view of a scaffolding arm assembly for the scaffolding apparatus when installed; Fig. 4 is an exploded view of the scaffolding apparatus as used after cladding of the building frame; 10 Fig. 5 illustrates in part sectional side view the scaffolding apparatus applied to a building frame after cladding thereof; Fig 6 and 7 illustrate in isometric and part-sectional side view respectively, the manner in which an extended hook or stud of a scaffolding arm assembly can be used with an unclad building frame; 15 Fig. 8 is an exploded isometric view of the scaffolding apparatus adapted for use at the comer of a building; Fig. 9 is a sectional view of a post or frame assembly illustrating the manner in which the comer scaffolding apparatus is mounted to a post; and Fig. 9 is a top view showing the comer scaffolding apparatus mounted to a post. 20 Detailed Description of the Preferred Embodiment Referring to the drawings and firstly to Fig. 1, there is illustrated scaffolding apparatus 10 according to an embodiment of the invention comprising a plurality of upright posts 11 which comprising posts of the frame 12 of a building and are typically formed of metal RHS. The posts 11 are provided with a series of apertures 13 arranged 25 one above the other, the apertures 13 in the illustrated embodiment being formed in outward facing flanges or webs 14 of the posts 11. Other flanges or webs of the posts 11 such as the inwardly directed flanges or webs may be provided with similar apertures 13 such that scaffolding can be used internally of the building. Adapted to be connected to a post 11 through the apertures 13 therein are a 30 plurality of scaffolding arm assemblies 15, each of which includes a main support arm 16 and a downwardly angled bracing arm 17. The main arm 16 is provided with an upright socket 18 at its free end for support of a guard rail assembly or the like. Brackets 19 may also be provided on the underside of the main arm 16 for receiving horizontal AMR307003P-24012011 6 members for interconnection of the arms 16 of adjacent arm assemblies 15 via a horizontal connection member. A connecting bracket 20 (see also Fig. 2) is provided at the inner end of the main arm 16 and includes a connecting stub 21 adapted to be received in the inner end of the 5 main arm 16 and be pinned thereto by a transversely extending pin 22 and aligned openings 23 and 24 in the stub 11 and main arm 16 respectively. The outer end of the stub 21 is provided with an upright facing plate 25 and a pin or stud 26 which includes a first portion 27 extending outwardly from the facing plate 25 longitudinally of the main arm 16 and an upright portion 28 extending substantially at right angles to the first 10 portion 27. The bracing arm 17 is also provide at its free end with an upright facing plate 29 and a locating pin or stud 30 which extends outwardly from the facing plate 29 substantially parallel to the first portion 27 of the pin or stud 26. In use and as shown in Fig. 3, a connecting bracket 20 is engaged with a post or 15 upright member 11 of the building frame 12 such that the facing plate 25 is juxtaposed with the flange or web 14 of the post 11. For this purpose, it is necessary to pivot the bracket 20 upwardly to allow the pin or stud 26 to locate in an aperture 13. In the engaged position, the right angled portion 28 of the pin or stud 26 extends upwardly of the aperture 13 on the rear side of the flange 14 which hooks the bracket 20 to the flange 20 14 of the post 11 and provides a main hanging point for the arm assembly 15. The bracket 20 when connected to the post 11 has the stub 21 extending outwardly therefrom substantially horizontally. The main arm 16 may then be engaged with the stub 21 of the bracket 20 and connected thereto by means of the pin 22. The locating pin or stud 30 of the bracing arm 17 is spaced from the pin or stud 25 26 of the bracket 20 so that it may be received in a further lower aperture 13 of the post 11 and such that the facing plate 29 becomes juxtaposed with the flange or web 14. This locates the bracing arm 17 and prevents lateral or swinging movement of the arm assembly 15. A series of horizontally aligned arm assemblies 15 may be connected in a similar 30 manner to spaced aligned posts 11 to be supported in a cantilever-like manner from the posts 11 after which a walkway 31 or the like (shown in dotted outline in Fig. 1) may be supported on the main arms 16 to provide a stable surface for workmen to walk upon whilst constructing the building. AMR307003P-24012011 7 After the building frame 12 is erected and other building components such as guttering and roofing are installed, the arm assemblies 15 may be disconnected from the respective posts 11. The exterior of the building may then be externally clad such as by sheet cladding 32 which is applied to the posts 11 as shown in Fig. 4 and connected 5 thereto in a conventional manner. The cladding may be any suitable external cladding material or materials. So as to provide access to the apertures 13 in the posts 11, a series of openings 33 are provided in the cladding 32 in alignment with the apertures 13. The openings 33 may then be plugged with removable plugs 34 (see Fig. 5). The cladding 32 if desired 10 may then be rendered. After completion of the building and if it is necessary to undertake work on the building, the scaffolding apparatus 10 may still be used. For this purpose, plugs 34 may be removed to provide access to the openings 33 and the aligned apertures 13. This allows for engagement of the connecting brackets 20 with the apertures 13 in a similar 15 manner to that described above except that in this case, the cladding 32 is interposed between the facing plates 25 and the posts 11. Similarly the facing plates 29 at the ends of the bracing arm 17 are positioned in face to face abutment with the post 11 with the pin or stud 30 extending into a further opening 33 and aligned aperture 13. Arm assemblies 15 may thus be connected to a series of posts 11 as described above to allow 20 for erection of a horizontal walkway along the building wall for repair or maintenance on for example building gutters or the roof. The components of the arm assemblies are preferably of metal hollow rectangular sections such as of steel or aluminium. The pins or studs 26 for engagement with the posts 11 may be of various different designs and preferably are designed to enable 25 engagement with a post 11 with or without cladding 32. For this purpose, the length of the stud portion 27 and its spacing from the facing plate 25 may be varied. For example, the stud 26 may be in threaded engagement with the facing plate 25 such that it may be screwed in or out from the facing plate to vary the spacing of the upright portion 28 from the facing plate 25. This allows adjustment of the stud 26 to suit various thicknesses of 30 cladding 32 and post flange 14. Alternatively, the pins or studs 26 may be of an extended fixed length as illustrated in Fig. 5 so as to suit engagement with a clad building frame. When used in association with an unclad frame as in Fig. 1, spacers 34 may be interposed between the AMR307003P-24012011 8 facing plates 25 (and 29) of the arm assemblies 15 and the post 11 as shown in Figs. 6 and 7. The spacers 34 are of a wedge-shaped configuration and have a central slot 35 which opens to the lower or "thin" end of the wedge -shaped spacer 34 such that the spacer 34 can be placed between the facing plates 25 (and 29) and post 11 and slid or 5 forced downwardly such that the portion 27 of the pin or stud 26 (or stud 30) locates in the slot 35. The spacer 34 may be formed of metal or plastics or any other suitable material. The pins or studs 26 and 30 are preferably of high tensile steel, typically 12 14mm diameter. For application to a corner of the building frame 10, a comer scaffolding arm 10 assembly 36 of the type illustrated in Fig. 8 is used. The arm assembly 36 is similar to the arm assembly 15 of Figs. 1 to 5 and thus similar components have been given similar numerals. In this case however, the inner ends of the arm 16 and brace 17 are mounted or fixed to an upright right-angle sectioned member or bracket 37 for example by welding such that the arm 16 extends substantially at right angles from the bracket 37. 15 The respective right-angled flanges 38 of the member 37 are provided with spaced apertures 39 spaced apart the same distance as the apertures 13 in a comer post 11'. The member 34 is positioned relative to the post 11' such that the flange 38 are in face to face contact with adjacent faces or webs 14 of the post 11' as shown in Figs. 10 and 11 such that the apertures 39 in the flanges 38 are aligned with apertures 13 in the 20 post 11'. The pins or studs 26 and 30 of scaffolding arm assemblies 15 adjacent the comer post 11' are then inserted into the aligned apertures 39 and 13 as shown in Fig. 9 such that the respective flanges 38 are sandwiched between the facing plates 25 and 29 and post 11. The pins 26 retain the respective flanges 39 of the member 17 to the post 11' and thereby support the comer scaffolding arm assembly 36 such that it extends 25 outwardly from the post 11' at 45 degrees to the adjacent arm assemblies 15 as in Fig. 10. The pins 30 extending through the aligned apertures 29 and 13 locate the lower ends of the brackets 37. The arm assembly 36 is of a length such that the socket 18 thereof is aligned with the sockets 18 of arm assemblies on adjacent sides of the buildings for erection of a 30 guard rail around the comer of the building. Further the arm assemblies 15 and 36 can support a walkway around the building corner. Screws 40 such as Tek screws may be used to screw the flanges 38 to the post if the side arm assemblies 15 are not used AMR307003P-24012011 9 The scaffolding arm assemblies 15 and 36 may be of various different designs and the connection arrangement between the arm assemblies 15 and posts 11 may be other than that illustrated and described. The terms "comprising" or "comprises" as used throughout the specification and 5 claims are taken to specify the presence of the stated features, integers and components referred to but not preclude the presence or addition of one or more other feature/s, integer/s, component/s or group thereof. Further, the reference to prior art herein is not to be taken as acknowledgement that such prior art constitutes common general knowledge in the art. 10 Whilst the above has been given by way of illustrative embodiment of the invention, all such variations and modifications 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 defined in the appended claims. 15 20 25 30 35 AMR307003P-24012011