Baby Corrugate - Detailed Cladding Design
Design Criteria for Limit State Capacities
a) Serviceability Limit State
No deflection or permanent distortion that would cause unacceptable appearance or side lap leakage due to inward or outward wind loads.
b) Ultimate Limit State
No pull through of fixings or fastener withdrawal resulting in sheet detachment due to wind up-lift (outward) loads.
System Design
The span capacity of Baby Corrugate is determined by the serviceability requirement for acceptable appearance and should not exceed 600mm.
The ultimate windload should not exceed 3 kPa.
The Baby Corrugate profiles are not intended for use as roofing products, and must not be used in situations where foot traffic point loads can be applied.
Fastener Design
Baby Corrugate should be screw fixed to either timber or steel framing.
For Timber
Buildex Ripple Zip M4.8 x 25 provides a tidy fixing detail with a unique head design that seals without a washer and screws to fit down into corrugations.
For Steel
Buildex Ripple Zip M4.8 x 25 provides a unique head design that seals without a washer and does not deform the sheeting.
If sarking or insulation is used over the framing Ripple Zips can’t be used, as they are not long enough and a 12g screw of appropriate length will be required.
For screw size range and fastener / washer assembly refer section 2.2.3.1 of the Dimond Roofing & Cladding Technical Manual.
The Span Capability and Sheet Appearance is based on fasteners at 200mm maximum spacing across the sheet without the use of load spreading washers.
Spans greater than 800mm will require the specification and use of side lap stitching fasteners.
Dimond Baby Corrugate Fastener Layout Options
