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LYSAGHT TRIMDEK®

Roofing made from LYSAGHT TRIMDEK®

Roofing made from LYSAGHT TRIMDEK®

Product Description and Features

LYSAGHT TRIMDEK® is a subtle square fluted steel cladding.  The fluting in the pans provides strength and long spanning capabilities.

It is ideal for economic roofing of contemporary style homes as well as industrial and commercial applications.

  • Long lengths and a special anti-capillary groove in the side lap allow use on roof pitches as low as 2° (1 in 30)
  • Can be used for both roofing and walling applications
  • Fix with ease and speed
  • Due to strength, spanning ability, lightness and rigidity, wide support spacings can be used with safety
  • Long lengths allow one sheet from ridge to gutter without end laps.

Common Uses of this product

Roofing and walling in industrial, commercial and domestic applications

Warnings

  • Minimum recommended roof pitch is 2 degrees
  • Walk only in pans and close or over the supports
  • Ensure selection of suitable material for environmental conditions for maximum durability
  • Lead and copper are not compatible with ZINCALUME® steel or COLORBOND® steel
  • Read full details on Guidelines for using COLORBOND® steel & ZINCALUME® steel.

Product Details

Schematic
LYSAGHT TRIMDEK® Dimensions
Masses
BMT (mm)
 Material kg/m kg/m2 m2/t
0.42 ZINCALUME® 3.26 4.28 234
0.42 COLORBOND® 3.32 4.35 230
BMT (mm)
 Material kg/m kg/m2m2/t
0.48 ZINCALUME® 3.70 4.86 206
0.48 COLORBOND® 3.76 4.93 203
Tolerances

Length: +0mm, -15mm
Width: +4mm, -4mm

Lengths
Sheets are supplied custom cut.

Material Specifications
  • ZINCALUME® steel complying with AS1397-2001 G550, AZ150 (550 MPa minimum yield stress, 150g/m² minimum coating mass);

or

  • Stainless steel standard grade designation is AISI/ASTM Type 430; UNS No.S43000

Not available in metallic finishes as a standard item. Subject to enquiry. Please check with your local supplier regarding specific colour availability for individual products.

The base metal thickness is 0.42 or 0.48mm.

The COLORBOND® steel complies with AS/NZS-2728:1997.

Colour Range

LYSAGHT® products are normally available in the standard range of COLORBOND® steel colours. View the standard colour range for:

COLORBOND® steel or
COLORBOND® Ultra and COLORBOND® Stainless steel or
Colour Chart for COLORBOND® Metallic steel

Please check with your local supplier regarding specific colour availability for individual products.

Maximum Support Spacings

The maximum recommended support spacings are based on testing in accordance with AS1562.1-1992, AS4040.1-1992 and AS4040.2-1992.

Roof spans consider both resistance to wind pressure and light roof traffic (traffic arising from incidental maintenance).

Wall spans consider resistance to wind and pressure only.

The pressure considered is based on buildings up to 10m high in Region B, Terrain Category 3, Ms=0.85, Mi=1.0, Mt=1.0 with the following assumptions made:

Roofs:
Cpi=+0.20, Cpe=-0.90, Kl=2.0 for single and end spans, Kl=1.5 for internal spans.

Walls:
Cpi=+0.20, Cpe=-0.65, Kl=2.0 for single and end spans, Kl=1.5 for internal spans.

These spacings may vary by serviceability and strength limit states for particular projects.

Maximum Support Spacings (mm)
Type of Span Thickness (mm) BMT
0.42 0.48

Roofs
Single Span
End Span
Internal Span
Unstiffened Eaves Overhang
Stiffened Eaves Overhang

Walls
Single Span
End Span
Internal Span
Overhang


1100
1300
1900
150
300


2400
3000
3000
150


1600
1850
2600
200
350


2700
3000
3000
200

  • For roofs: the data are based on foot-traffic loading.
  • For walls: the data are based on pressures (see wind pressures table).
  • Table data are based on supports of 1mm BMT.
Limit States Wind Pressures

LYSAGHT TRIMDEK® offers the full benefits of the latest methods for modelling wind pressures. The wind pressure capacity table is determined by full scale tests conducted at BlueScope Lysaght's NATA Registered Testing Laboratory, using the direct pressure-testing rig.

Testing was conducted in accordance with AS 1562.1 - 1992, Design and Installation of Sheet Roof and Wall Cladding and AS 4040.2 - 1992, Resistance to wind pressures for non-cyclonic regions.**

The pressure capacities for serviceability are based on a deflection limit of (span/120) + (maximum fastener pitch/30).

The pressure capacities for strength have been determined by testing the cladding to failure (ultimate capacity). These pressures are applicable when the cladding is fixed to a minimum of 1.0mm, G550 steel. For material less than 1.0mm thick, Contact Us for advice.

TRIMDEK® Limit State Wind Pressure Capacities (kPa)
Base
Metal
Thickness
(mm)

Type of
Span

Limit
State

Span (mm)

600 900 1200 1500 1800
0.42 Single Serviceability 4.98 3.91 2.83 1.87 1.16
Strength* 10.25 8.35 6.45 4.75 3.60
End Serviceability 4.18 3.63 3.08 2.55 2.06
Strength* 6.35 5.85 5.30 4.80 4.30
Internal Serviceability 5.05 4.18 3.42 2.83 2.36
Strength* 9.50 7.95 6.55 5.25 4.30
0.48 Single Serviceability 7.27 5.06 3.34 2.06 1.15
Strength* 12.00 11.60 9.60 7.75 6.10
End Serviceability 6.29 5.13 3.96 2.93 2.13
Strength* 9.40 8.00 6.55 5.30 4.35
Internal Serviceability 7.37 5.96 4.66 3.54 2.72
Strength* 9.90 8.55 7.35 6.25 5.40

TRIMDEK® Limit State Wind Pressure Capacities (kPa)
Base
Metal
Thickness
(mm)

Type of
Span

Limit
State

Span (mm)

2100 2400 2700 3000
0.42 Single Serviceability 0.75 0.53    
Strength* 3.00 2.75    
End Serviceability 1.62 1.22 0.85 0.50
Strength* 3.80 3.25 2.75 2.25
Internal Serviceability 1.94 1.56 1.23 0.97
Strength* 3.65 3.30 3.05 2.85
0.48 Single Serviceability 0.71 0.50 0.42  
Strength* 4.75 3.60 2.65  
End Serviceability 1.54 1.12 0.82 0.58
Strength* 3.65 3.25 2.95 2.75
Internal Serviceability 2.22 1.92 1.64 1.38
Strength* 4.75 4.30 3.85 3.45

* A capacity reduction factor of ø = 0.9 has been applied to strength capacities.
Supports must be not less than 1mm BMT.

Cyclonic Map

This information is suitable for use only areas where a tropical cyclone is unlikely to occur, as defined in AS 1170.2 - 2002, SAA Loading Code, Part 2: Wind Loads.**

** More information on the relevant Standards can be found at the Standards Australia Website.

For correct specification and installation of BlueScope Lysaght roofing and walling products in cyclonic areas, please Download LYSAGHT® Cyclonic Area Design Manual Steel Roofing & Walling (334 KB)

Roof Drainage Capacity

Penetrations will alter the flow of water on a roof. For assistance in design of roofs with penetrations please Contact Us .

Maximum roof lengths for drainage measured from ridge to gutter (m)
Peak rainfall intensity mm/hr Roof slope
1° 2° 3° 5° 7.5° 10°
100 - 220 257 320 382 439
150 - 146 172 214 255 293
200 - 110 129 160 191 220
250 - 88 103 128 163 176
300 - 73 86 107 127 146
400 - 55 64 80 96 110
500 - 44 51 64 76 88

Warranty

Please view our warranties page for further information.

FAQs

  • What is cladding and how does it relate to roofing and walling?
  • How can I identify LYSAGHT TRIMDEK® from other look-a-likes?
  • When fixing LYSAGHT TRIMDEK®, how many ribs have to be fastened?
  • What is the best way to walk on LYSAGHT TRIMDEK®?

 

 
 
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