KOMBI Aluminium Adjustable Modular Access Stairs

KOMBI TECHNICAL STATEMENT


CRITERIA	DATA	NOTES
ALUMINIUM EXTRUSION
KOMBI 180	Aluminium Grade 6005A-T5
KOMBI 180	Aluminium Grade 6005A-T5
KOMBI 60	Aluminium Grade 6106-T6
Bracing Straps	Aluminium Grade 6106-T6
Walkway Mesh	Aluminium Grade 6106-T6
Handrail	Aluminium Grade 6106-T6
Kneerail	Aluminium Grade 6106-T6
Toe Board	Aluminium Grade 6106-T6
Stainless Steel Brackets	Stainless Steel Grade 316
Aluminium Brackets	Aluminium Grade 5083-T5
PLATFORM LOADINGS
Live Load	2.5kPa	In accordance with AS 1657:2018
Concentrated Loading	1.1kN	Applied through 100 x 100 pad at any point
Mesh Slip Rating	R11
Max Free Standing Height	6000mm	Subject to Sayfa technical advice
Platform Support Spans	KOMBI 80 SERIES	Deflection limited to the span length divided by 100
	600 Series (W) Platform - 3300mm max spacing
	900 Series (W) Platform - 2700mm max spacing
	1200 Series (W) Platform - 2500mm max spacing
	KOMBI 180 SERIES
	600 Series (W) Platform - 6000mm max spacing
	900 Series (W) Platform - 5500mm max spacing
	1200 Series (W) Platform - 5100mm max spacing
Platform Mesh Openings	Personnel access under platform	Where personnel is required to access underneath platform narrow mesh (GW334) must be used.
STAIR LOADINGS
Live Load	2.5kPa	Applied to tread and landing
Deflection	L/100 or 40mm	Whichever is the lesser
Tread Loadings	2.2kN per lineal metre or a concentrated loading of 1.5kN	In accordance with AS 1657:2018, Section 7.1.1
Max Stair Treads	17 treads, 18 risers	In accordance with AS 1657:2018
Stair Widths	Max 1500mm wide
Stair Angles	26 degrees to 44 degrees	Ideal angle is 40 degrees. Angle can be increased to reduce footprint.
Stair Risers	Riser - 130 ≤ R ≤ 225	All risers and goings in the same flight of stairs shall be uniform dimensions within a tolerance of ± 5mm
	Going - 215 ≤ G ≤ 255
	Combination = 540 ≤ (2R + G) ≤ 225
DESIGN WIND CRITERIA
Region	A1
Regional Gust Wind Speed	V100 = 41m/s
Terrain Category	2
Topographical Multiplier	MT = 1.0
Terrain/Height Multiplier	Mzcat = 0.96
Shielding Factor	MS = 1.0
FASTENERS
Material	Stainless Steel 316
KOMBI T-Bolt Fixing	M10 x 25mm, 316 SS
KOMBI Nut Torque	60nM
HANDRAIL
Platform Guardrail Post Spacing	2000mm Max
Max Handrail Height	1000mm	Typically 987mm standard from deck to top of handrail
Kneerail Height Below Top Rail	450mm from top of kneerail to underside of kneerail
Platform Toe Board	Use KOMBI GW320	Required if an object could fall from a platform or landing onto an area to which access by persons is available.
Platform Flooring Mass	12kg / m2. This includes platform and handrails.
Limitations of Use	Not suitable for BCA / NCC stair design.
DISSIMILAR METALS
Aluminium to Concrete	To be painted with a bitumen paint.
Aluminium to Roof Deck	Shall be separated with EPDM tape.
Aluminium to Stainless Steel	Brackets to be powder coated or EPDM separated.	Note: This does not apply to fasteners. Ref AS/NZS 1664.1:1997 Section 5.1.