guide to specification - Reid Construction Systems

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10 S4: Flexus Design Considerations The Flexus Modular Flooring System has been designed for use with Pryda Span Floor Trusses. For spans outside of the following tables and construction using steel or laminated timber joists, please use the free engineering advisory service available to our clients to assist with your specification. For further detailing, CAD drawings and specification, please refer to www.flexus.co.nz or call us on 0800 88 22 12. Flexural Stress First Cracking >5MPa Flexural Stress First Ultimate >8MPa Compressive Strength (f’c) >40mpa at 28days Crack width at Ultimate Flexural Strength 15GPa 4.1.1 Factors Affecting Floor Performance Floor liveliness, or bounce, has been an intermittent issue over the years with lightweight residential floors – for all forms of timber and steel construction. To eliminate these problems, Pryda Floor Systems are designed to stringent dynamic performance criteria. Pryda Floor Systems have three options for floor performance that can be selected by the designer; • AS/NZS 1170: 2002 as the minimum criteria. • “Pryda Build” truss design software design option of “normal” is more stringent • “Pryda Build” truss design software design option of “Enhanced” is used for those who want a superior performance overall. The floor truss is only one component that can affect the floor performance. The engineer should also consider the vibration performance of the supporting structure. On-site conditions are always important and proper attention to detail must be taken at the time of installation. Flooring Material The flooring material has a significant effect on the perceived bounce of a floor. It has the ability to spread human impact loads depending on the material and the thickness. Plywood acts differently to particle board, and T&G acts differently to both. A simple way to improve floor performance is to select flooring that is stiffer (e.g. thicker) than the minimum for your chosen application.
S4.2 Span Tables Residential Application Floor Load = 1.5kPa / 1.8kN Dead Load = allow 0.8kPa 30mm Flexus Modular Floor and MSG12 Timber Module o/a depth (mm) Truss Type / Spacing Truss Spacing Maximum Span (mm) 290 PrydaSpan PS25 up to 600 crs 4800 340 PrydaSpan PS30 up to 600 crs 5300 450 PrydaSpan PS40 up to 600 crs 6200 290 Longreach up to 600 crs 4800 340 Longreach up to 600 crs 5300 450 Longreach up to 600 crs 6600 290 PrydaSpan PS25 up to 400 crs 5300 340 PrydaSpan PS30 up to 400 crs 5800 450 PrydaSpan PS40 up to 400 crs 6800 290 Longreach up to 400 crs 5300 340 Longreach up to 400 crs 5800 450 Longreach up to 400 crs 7200 Commercial Application Floor Load = 3.0kPa / 2.7kN Dead Load = allow 0.8kPa 30mm Flexus Modular Floor and MSG12 Timber Module o/a depth (mm) Truss Type / Spacing Truss Spacing Maximum Span (mm) 290 PrydaSpan PS25 up to 400 crs 5000 340 PrydaSpan PS30 up to 400 crs 5600 450 PrydaSpan PS40 up to 400 crs 6600 380 PrydaSpan PS25* up to 400 crs 6200 430 PrydaSpan PS30* up to 400 crs 6750 540 PrydaSpan PS40* up to 400 crs 7650 600 Longreach* up to 400 crs 8500 630 Longreach* up to 400 crs 8800 *90mm x 90mm MSG12 Chords Notes: The span tables above are a guide only and all Flexus Modular Flooring designs must be checked by our Authorised Manufacturer or Reid’s engineering team. Module widths may need to be adjusted to keep module weight within lifting or site constraints. 11
Page 1: www.flexus.co.nz guide to specifica
Page 4: 4 Introduction The Flexus Modular
Page 7 and 8: Pryda Longreach As the name suggest
Page 9: S3: Fire Rating The Flexus Modular
Page 13 and 14: S4.6 Accessories - Installation 4.6
Page 15 and 16: S7: Pryda Truss Design Consideratio
Page 17 and 18: S8(a): End Support Details - Fixing
Page 19 and 20: S10: Flexus Modular Flooring - Desi

guide to specification - Reid Construction Systems

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