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Introducing: I South African Glass Institute South African Glass & Glazing Association HAT EVERY GLAZIER AND BUILDING INSPECTOR MUST KNOW ABOUT GLASS INSTALLATIONS & PRODUCTS . . . TM Note! l All previous issues are hereby superseded. New Nomenclature Old New SABS 0137 SANS 10137 SABS 0160 SANS 10160 SABS 0400 SANS 10400 SABS 1263 SANS 1263 Group The contents of this brochure are abridged AAAMSA guidelines. For further detailed information consult the AAAMSA GENERAL SPECIFICATIONS and SELECTION GUIDES. ©AAAMSA/SAGGA - February 2005 À À D E T E R M I N AT I O N O F G L A S S F I N D I M E N S I O N S SANS 10137 - The installation of glazing in buildings Quote: 7.14.2 Butt jointing edges Where glass panes in the same plane are butt-jointed without fins, they will not have the same wind resistance characteristics as a single pane of the same overall size and thickness. The thickness of such glass should be calculated on the assumption that the butt joint does not have any structural effect, i.e. the surround will be the only support. If reinforcing is unavoidable due to the span and wind loading, it might be necessary to install fins attached to the structure at the butt joints as indicated below. A suitable adhesive sealant with sufficient bonding strength to allow movement due to wind loading shall be used. Silicone sealants that have a tensile strength of at least 1 Mpa are regarded as suitable for this purpose. Fins would normally be installed on the inside of the building where there is likely to be less pedestrian traffic. Fin selection is covered in figures 39, 40 and 41. Unquote. Glass Fin Dimensions Refer notes at bottom of page. Category Wind Load A0* 600 Pa* Fin height in m A1 1000 Pa A2 1500 Pa A3 2000 Pa Fin Dimensions, Width x Thickness in mm 1,5 150 x 12 150 x 12 150 x 15 STE 2 150 x 12 150 x 12 150 x 19 STE 2,5 150 x 12 175 x 15 175 x 19 STE 3 175 x 15 200 x 15 200 x 25 STE 3,5 225 x 15 250 x 19 275 x 25 STE 4 275 x 15 275 x 19 300 x 25 STE 4,5 5 350 x 15 375 x 19 350 x 19 350 x 25 STE STE STE STE *Also applicable to internal glazing. STE = Subject to Enquiry Thickness Width Glass Fin Glass Fin Silicone Sealant Not allowed Fins NOT secured to Structure Glass Fin Allowed Fins secured to Structure 3mm Glass Pane Glass Pane Silicone Sealant 3mm Notes: The above table has been based on Figure 40 and 41 of SANS 10137 for a Fin Height/Main pane width Ratio of 1.0 or less. The SANS 10137 recommends : 1) A minimum windloading of 750 Pa is used for the determination of glass fin dimensions for internal and external applications. 2) A minimum glass fin width of 150 mm. 3) Glass fin thickness of 12, 15, 19 or 25 mm Any deviations from the above are to be approved in terms of SANS 10400 by a duly appointed competent person in writing for each individual contract. ©AAAMSA/SAGGA - February 2005 SELECTION OF GLASS DIMENSIONS SANS 10400-1990 - Part N Glazing Quote: NN2 Installation of Glazing NN2.1 In any vertical glazing installation, any pane of glass and the fixing of such pane shall comply with the following requirements: (a) Where such pane is to be exposed to the effect of wind, the thickness of such pane in relation to its area shall be in accordance with SANS 10137. (b) Such pane shall be fixed in the frame in accordance with any suitable method described in SANS 10137 and such frame shall be so installed that it is capable of sustaining the total wind load for which such pane was designed. (c) Notwithstanding the requirements of paragraph (a), the nominal thickness of a pane of glass shall be not less than that given in Table 1. TABLE 1 - GLASS DIMENSIONS 1 2 Note ! This table applies Note ! This table not only 2 to glass panes having Nominal glass thickness, mm Maximum size of pane, m applies to non-safety 3 0,75 all round support. glass but applies to 4 1,5 safety glass as well. 5 2,1 6 3,2 Unquote. The above is currently under review. It is expected that the revisions will be published end 2005. The status quo thus remains and Table 1 (above) applies in all instances where no rational glass design has been made. Table A-D (below) will only come into effect end 2005 when the new Part N is published. Any deviations from the Table 1 must be approved in terms of SANS 10400 by a duly appointed Competent person in writing for each individual contract. Recommendations made by Competent Persons (Glazing) appointed by the South African Glass Institute must be included with any SAGGA Certificate of Conformance. Table A: Dimensions for vertical glass supported in a frame supported all round in external walls in buildings where the height measured from the ground to the top of such wall does not exceed 10 metres. Maximum pane area, m2 Nominal glass thickness in mm 3 4 5 6 8 10 12 0.75 1.5 2.1 3.2 4.6 6.0 6.0 Patterned Annealed & Wired Glass - 0.75 1.2 1.9 2.6 3.4 - Laminated Annealed Safety Glass - - - 2.9 4.3 5.7 5.7 Toughened Safety Glass - 1.9 3.0 4.5 8.0 8.0 8.0 Monolithic Annealed Glass Table B: Dimensions for vertical glass supported in a frame all round in internal walls. Maximum pane area, m2 Nominal glass thickness in mm 3 4 5 6 8 10 12 0.75 1.5 2.1 3.2 4.6 6.0 6.0 Patterned Annealed & Wired Glass - 0.75 1.2 1.9 2.6 3.4 - Laminated Annealed Safety Glass - - - 4.1 6.0 7.2 7.2 Toughened Safety Glass - 3.0 4.2 6.4 9.2 9.2 9.2 Monolithic Annealed Glass Table C: Dimensions for vertical glass supported in a frame on two opposite sides in external walls in buildings where the height measured from the ground to the top of such wall does not exceed 10 metres. Maximum span in metres Nominal glass thickness in mm 3 4 5 Monolithic Annealed Glass Patterned Annealed & Wired Glass - 0.4 - 0.25 Laminated Annealed Safety Glass - Toughened Safety Glass - Table D: 6 8 10 12 0.5 0.6 0.85 1.0 1.3 0.3 0.35 0.5 0.6 - - - 0.55 0.8 0.95 1.2 0.55 0.7 0.85 1.15 1.3 1.8 Dimensions for vertical glass supported in a frame on two opposite sides in internal walls. Maximum span in metres Nominal glass thickness in mm 3 4 5 6 8 10 12 Monolithic Annealed Glass - 0.65 0.8 0.95 1.3 1.55 2.0 Patterned Annealed & Wired Glass - 0.4 0.48 0.57 0.78 0.9 - Laminated Annealed Safety Glass - - - 0.9 1.25 1.5 1.95 Toughened Safety Glass - 0.9 1.1 1.3 1.75 2.0 2.7 ©AAAMSA/SAGGA - February 2005 Re p re s e nt ing P.O.Box 7861, Halfway House 1685 Tel: (011) 805-5002 Fax: (011) 805-5033 E-mail: [email protected] [email protected] Associations Aims: Corporate Members To be the Professional Organisation within South Africa which is Uniquely Committed to the Disciplines & Standards of Quality which surround the Manufacture & Installation of Architectural Aluminium Products, Interior Building Systems, Glass and Glazing, Building Insulation & Associated Activities. To provide a Forum for the Exchange of Expertise & Interaction between Individuals & Organisations to Create a Competitive Advantage for the Architectural Aluminium, Glass & Insulation Industry. To communicate to all Stakeholders in the Architectural Aluminium Industry the Register of Accredited Members of AAAMSA who have Satisfied the Associationss Requirements of Predetermined Standards