Appendix 3 Treads. design elements

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1 Appendix 3 s design elements A3

2 42 rise 165 Appendix 3 s A3 design This is a reference guide to standard treads used in the Arden Elements range. Many custom staircases will demand their own unique tread design. Also, new developments in architectural flooring materials and slip-resistant strips naturally ensure that tread specifications are in a continual state of evolution. This appendix can be used in conjunction with other Arden technical data sheets to aid in the specification process. Most tread designs listed here are specified to work with other Arden staircase or stringer elements. It is our hope that it may be used by architects to help with preliminary tread specification early in the design process. As with all aspects of staircase design, tread specifications may need to be altered to meet site-specific requirements. STT-1 Solid timber tread Gap between treads must not excede 125mm R6 Going 250 width

3 Rise 160 Gap between treads must not excede 125mm End of nosing bevilled to tread for open edged stair design. Applied nosing bonded to treads. This reduces tread to tread gap to less than 125mm. Expressed Joint R6 Going 275 width 300 R6 width STT-2 Solid timber tread with non-slip strip STT-3 Solid timber tread with non-slip strip and applied nosing with bevelled ends for mono-stringer application STTR-1 Solid timber tread with riser board Appendix 3 s A3 32 Riser 19 design elements 3

4 Appendix 3 s A3 technical Several standard solid timber tread (STT) specifications are shown, some incorporating slip-resistant strips and/or applied nosings. Solid timber treads with risers (STTR) also show options for either vertical or raked riser boards. Laminated timber treads (LTT) involve a composite construction and may be selected for greater or stability. Alternatively they may be required due to the specification of rubber or vinyl on the top surface, and/or to allow for the incorporation of structural steel supports that are fixed to stringers. Some of these designs incorporate applied edge trim as well as nosings. Laminated timber treads with risers (LTTR) may be designed with the bottom faces of the treads to be visual or non-visual. The stack block tread (SBT) is a special design that represents a method of cladding a stringer in order to create an illusion of stacked blocks. The diagrams showing reconstituted stone treads (RST) and ceramic tile covered treads (CTT) illustrate typical ways of approaching this kind of floor surface on treads. STTR-2 Solid timber tread with riser board and non-slip strip over nosing Expressed Joint Riser 19 overlaps nose to reduce wear. Strip also conceals screw heads

5 32 Expressed Joint Raked riser Shown with return nosing for exposed edge 84.0 Riser 19 overlaps nose to reduce wear. Strip also conceals screw heads. 32 Nosing Thickness Riser 19 Thickness STTR-3 Solid timber tread with riser board and non-slip strip back from nosing STTR-4 Solid timber tread with raked riser board STTR-5 Solid timber tread with riser board and applied nosing Appendix 3 s A3 Nosing depth Riser design elements 5

6 62 Rise 180 rise 170 rise 173 Appendix 3 s A3 LTT-1 Laminated timber tread LTT-2 Laminated timber tread with non-slip strip and resilient insert LTT-3 Laminated timber tread with embedded support plate Dress wood 19mm "picture frame" nosing Dress wood veneer top and bottom Resilient insert for high traffic stairs Dress wood 19mm "picture frame" nosing 3 piece tread is assembled around steel tread plate Going 275 width 300 Going MDF or ply core MDF or ply core 53 Overlap 30 Dress wood veneer top and bottom width 300 Full width steel support plate connects to stringers on each side 6

7 67 3 piece tread is assembled around steel tread plate Dress wood 19mm "picture frame" nosing Dress wood veneer top and bottom Dress wood nosing bonded to core Resilient insert for high traffic stairs Non-slip strip Overlap Full width steel support plate connects to stringers on each side width 360 MDF or ply core 40mm SHS supports strengthen tread and attach to stringer Visual front of stair 75 LTT-4 Laminated timber tread with embedded support plate and non-slip strip LTT-5 Laminated timber tread with embedded SHS supports LTT-6 Laminated timber tread with non-slip strip folded tread plate and full width resilient insert Appendix 3 s A3 MDF or ply core Folded steel tread plate typically welded to steel stringer at sides design elements 7

8 Appendix 3 s A3 LTT-1 Laminated timber tread LTTR-2 LTT-2 Laminated timber tread with riser boards visual soffit with non-slip strip LTTR-3 Laminated timber tread with riser boards non-visual soffit Dress wood end capping for exposed edge stair Dress wood top veneer and riser R6 Dress wood end capping for exposed edge stair Dress wood top veneer and riser Rebated non-slip strip Dress wood top veneer and riser R6 Riser 62 MDF or ply core 62 Dress wood bottom veneer for stairs with visible underside Riser 62 MDF or ply core 62 Dress wood bottom veneer for stairs with visible underside Riser MDF or ply core 8

9 Dress wood top veneer and riser Rebated non-slip strip Riser 47 MDF or ply core 47 Steel stringer with tread & soffit support plates. 13 Soffit, treads and side returns completely enclose stringer LTTR-4 Laminated timber tread with embedded support plate and non-slip strip SBTT-1 Stack block tread interior SBTT-2 Stack block tread exterior Appendix 3 s A3 Rebated non-slip strip Shadow lines on returns and riser boards visually seperate treads to create "Stack Block" appearance design elements 9

10 Appendix 3 s A3 RST-1 Reconstituted stone tread welded steel support RST-2 Reconstituted stone tread reinforced concrete support CTT-1 Ceramic tile covered tread reinforced concrete support Reconstituted stone tread Non-slip ribs 1.2mm zinc annealed steel snap cover soffit. Powder coated to customer requirements width 300 Welded steel support plate Reconstituted stone tread Reinforced Rebar concrete Non-slip ribs Folded steel trough contains the reinforced concrete Grout Ceramic Tiles Reinforced Rebar concrete Non-slip strip Folded steel trough powder coated to suit 10

11 compliance Arden is a BSA licensed contractor for carpentry, joinery, glass, glazing and aluminium as well as structural metal fabrication and erection. Arden supplies a Form 16 (Licensed Contractor) on all projects. In design and construct contracts, a Form 15 (Design Engineer) certification is supplied upon request. Please see specific product technical data sheets to check level of compliance with relevant codes and standards. design note For all commercial applications, it is important that sufficient space for the stairwell cavity be allowed to satisfy Australian Standards and BCA requirements. About this document Intellectual property is copyright Archstairs Pty Ltd unless otherwise agreed in writing. All rights to the document are retained. Any use of the document by clients or third parties, unless specifically authorised by Archstairs Pty Ltd, are at their own risk and the user releases and indemnifies Archstairs Pty Ltd from and against all loss or damage arising from such use. Appendix 3 s A3 The footprint is primarily driven by the floor to floor rise, as well as the staircase configuration chosen. However, stringer and balustrade style design may increase the amount of space required. Allowing too small a cavity can restrict the design options of the staircase. Also, points at where the staircase interacts with other structures are best addressed early in the design cycle. Consultation with Arden early on will help ensure that these design issues can be addressed in a cost-effective manner. design elements 11

12 phone (07) fax (07) Office & factory: 46 Radley Street Virginia Qld 4014 Australia Postal address: PO Box 317 Virginia Qld 4014 Australia Version 1.0. Design by