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CorruDek ®

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“Profiles Tested for Cyclonic Conditions”

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Steel Supplied by:

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 CorruDek 2
Corrugated Profile Roofing

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RPFL CorruDek® is the famous Australian corrugated profile. CorruDek® is equally at home

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with traditional and contemporary designs. It is available in three basic metal thicknesses,
and is fixed with ease and speed.Use CorruDek® 0.55mm for curving famous corrugated profiles.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Remember
Base Materials Tolerance Minimum Roof Pitch
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Steel Grade: G550 and G300 Length: +0mm, -10mm You can use CorruDek®
• Capping
Coating: AZ150 and AZ200 Width: +4mm, -4mm on roof pitch as low as
• Ridge Caps
BMT: 0.40mm (Z/A Export Only), 0.45TCT 5° (1 in 12).
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• Flashings
0.42mm (Minimum), 0.50TCT • Guttering
0.48mm, 0.53TCT • Fasteners
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0.55mm, 0.60TCT Length Mass • Insulation

"#!$#%&''#()!*&!+,-!.,*/!%0%1&(,%!233#'41,#3!3%$#.3!*&!5
Lengths are custom cut. BMT 0.42mm: 4.3kg/m 2 • Translucent Sheeting
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*,'4#$!B7$1,(3!%1233!9!',(,'7'C!
2 • Hurricane Vents
Check maximum and BMT 0.48mm: 4.9kg/m
minimum with us.
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BMT 0.55mm: 5.6kg/m 2

Sheet Coverage !
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Width of Room (m) 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 30 40 50 60

Number of Sheets 4 6 7 8 10 11 12 14 15 16 17 18 19 20 21 23 24)*+,- .771-8279*
25 27 40 53 66
.+/01+22-
!" #" $" %" &'%" !("
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304*05/46-
Recommended Fasteners !"" ##" #$% &#" &'# (&)
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!$" !(* !%# #!(

We recommend BRA Fasteners type B8 protection to AS 3566 Class 4 with 25mm diameter Marine #$$ #)&
#""
Grade Alumiuninium / EPDM universal BRA cyclone washer (Specially !!" d cyclone
designe !#) !*"
washer). !)!BRA##"
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Fasteners Exclusively available at RPFL. #$" '' !"& !#' !$& !%*
&"" %& '* !"% !#% !(*
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Maximum roof lengths for drainage- Rainfall Thermal (""

expansion and $$
contraction
*( of'"steel cladding
)* !!"
$"" (( $! *( %* '' !
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Peak Roof Slope !"##$%&#'($"%

Rainfall
4561'789'%9:%09'$:10$89'%)**+
1° 2° 3° 5° 7.5° 10° )**+
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Intensity
,-./%0"1'(# 2-./%0"1'(# 32./%0"1'(#
100 27 32 36
!""" "#$ % &#!
150 18 21 23
'"""" '#( $ )
200 13 15 17
'!""" '#* * '%#!
250 10 12 13
("""" (#& '( '*
300 8 9 11
(!""" % '! ((#!
400 5 6 8
%"""" %#$ '* (+ !
500 4 5 6

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 WARRANTY CorruDek 3
As per NZ Steel Specification & Installation Guide March 2011.

IMPORTANT PUBLICATIONS

For your installation to perform to its full potential, it is essential that it is designed, installed and
maintained in accordance with good trade practice. Please refer to:

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NZ Steel Specification & Installation Guide March 2011.

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NZ Metal Roof & Wall Cladding code of practice version 2.2 / 2012.

FOR BEST RESULTS

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These suggestions will improve the appearance of the RPFL CorruDek® Roof and make installation easier.

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Keep the roofing sheets dry when closely stacked OR keep the sheets well ventilated if subjected

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to wet condition.
Care should be taken to avoid dragging sheets which will cause scratching and scouring to the
coated surface. !"#"$"%&'!"#$

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Always walk over battens / purlins positions and !"#"$"%&'!!!!!!!!!
wear soft soled shoes.
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Lay sheets from right to left to ensure tight fitting-note that the trailing edge of any sheet should not be
!"#"$"%&'!

fixed until the following sheet is installed beneath it.

Ensure the sheets are not bent unintentionally at the steps during handling.
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Install sheets with fasteners at the eave and ridge only until all sheets have been installed.
Fix the roof permanently in position using the required fastener frequency.
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*##1!67$1,(3!.,*/!89:8;!-!<;''!5=>!2()!?8@!89:8;!-!<A!*&!
Heads of fasteners to be matching color-available from RPFL.
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
When cutting or trimming CorruDek® sheets, use large metal snips.
Metal abrasive/ cutting discs should NOT be used at any time.
Turn up sheet ends at ridges and hips and cover with suitable accessories.
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All accessories should be installed in accordance with good plumbing practice.

!!!!!! !!!"#$%
Upon completion of work always clean and sweep roof with soft broom and gutters free from
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!"#"$"%&'DEF!G23*#(#$3!*0B#!8@!DH!B$&*#%*,&(3!*&!F5!IAJJ!K1233!9!
metal cuttings and swarf. .,*/!LA''!),2'#*#$!>2$,(#!M$2)#!F17',(,7'!N!O6=>!7(,P#$321!
DEF!%0%1&(#!.23/#$!Q5B#%,2110!)#3,R(#)!%0%1&(#!.23/#$SCDEF!
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G23*#(#$3!O-%173,P#10!2P2,1241#!2*!E6GTC
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1. RPFL Cyclonic Testing of 0.42bmt CorruDek G550 Steel Grade, Fixed into Timber Purlin
®
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Testing on the CorruDek® roofing profile has been carried out at The University of Adelaide, EngTest,
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South Australia, Australia. The cyclic tests have produced the following results refer to Report No’s:
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C130901-15-Rev A, dated 27th February 2014

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C130901-16-Rev A, dated 24th February 2014

C130901-21-Rev A, dated 26th February 2014
C130901-22-Rev A, dated 27th February 2014

The cyclic test results have been used as a basis for development of the load span table below.

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 CorruDek 4
Lo-Hi-Lo Cyclonic Wind Uplift Resistance - Strength Limit State Test Results
Load Span Table
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0.42bmt CorruDek sheeting, G550.
1 Timber purlin batten, minimum width 45mm and minimum depth 45mm, MGP12 Pine,
joint group JD4.
Bremick Type 17 x 65mm long screw with 25mm diameter, 1.0mm thick Aluminium.

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Bonded washer used under the head of each screw and fastened at alternate crests.

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Strength Limit State Design Pressure:

Span Strength (kPa) Span Strength (kPa) Screw Force

(mm) End Span (Trend Line) (mm) Internal Span (Trend Line) (kN)

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480 9.16 600 9.16 0.54
600 7.27 750 7.27 0.60

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750 5.72 950 5.72 0.64
950 4.48 1200 4.48 0.68

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2. Re: RPFL Cyclonic Testing of 0.42bmt CorruDek G550 Steel Grade, Fixed into Steel Purlin
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Testing on the CorruDek roofing profile has been carried out at The University of Adelaide, EngTest,
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South Australia, Australia. The cyclic tests have produced the following results refer to Report No’s:
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• C130901-1-Rev A, dated 19 February 2014

• C130901-6-Rev A, dated 19 February 2014
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• C130901-7-Rev A, dated 19 February 2014

• C130901-12-Rev A, dated 19 February 2014
The cyclic test results have been used as a basis for development of the load span table below.
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Low High Low Cyclonic Wind Uplift Resistance - Strength Limit State Test Results
Load Span Table
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• 0.42bmt CorruDek ® sheeting G550.

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Minimum steel purlin thickness, 1.55mm G450 grade.

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Bremick 14-10 x 65mm screw with 25mm diameter

Aluminium Bonded washer used under the head
of each screw and fastened at alternate crests.
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Strength Limit State Design Pressure:

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Span Strength (kPa) Span Strength (kPa) Screw Force

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(mm) End Span (Trend Line) (mm) Internal Span (Trend Line) (kN)
480 9.52 600 9.52 0.57
600 7.58 750 7.58 0.63
750 6.05 950 6.05 0.68
950 5.24 1200 5.24 0.79

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 CorruDek 5
3. Re: Letter of opinion RPFL Cyclonic Testing of 0.48bmt CorruDek ® G550 - Steel Grade,
Fixed into Timber & Steel Purlins

Dear Sir,

We have acted as a consultant technical advisor on your behalf and arranged cyclic load testing
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for Roofing & Profiles (Fiji) Ltd, in respect to their 0.42bmt CorruDek roofing profile.

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Fyfe Pty Ltd organised and reviewed cyclic testing, carried out by EngTest, The University of Adelaide

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testing facilities in accordance with the requirements of the then current National Construction Code
2013 (Building Code of Australia (BCA)) for cyclone area wind force resistance of the 0.42bmt
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CorruDek roof sheeting configurations below:

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Common data:

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• CorruDek sheet dimensions: 762mm cover, 76.2mm pitch, 16mm high profile, G550 steel grade.

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Configuration 1:
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• 0.42bmt CorruDek sheeting, G550.
• Minimum steel purlin thickness, 1.55mm G450 grade.

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• Bremick 14-10x65mm screw with 25mm diameter Aluminium Bonded washer used under the head of
each screw and fastened at alternate crests.
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Configuration 2:
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• 0.42bmt CorruDek sheeting, G550.
• 1 Timber purlin batten, minimum width 45mm and minimum depth 45mm, MGP12 Pine, joint group JD4.
• Bremick Type 17 x 65mm long screw with 25mm diameter, 1.0mm thick Aluminium Bonded washer
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used under the head of each screw and fastened at alternate crests.
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Note: Purlins were not under test and must be considered by a qualified structural.
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It is our opinion that if the 0.48bmt CorruDek sheeting profile can achieve the cyclonic test results
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equivalent of the 0.42bmt CorruDek sheeting profile (see Fyfe Pty Ltd 0.42bmt CorruDek test reports
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issued 20/2/2014 and 26/2/2014) if the following criteria are met:

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• 0.48bmt CorruDek sheeting is to be manufactured from the identical steel grade, G550,
manufactured using the same roll former, have identical profile and dimensions to that of the
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0.42bmt CorruDek sheeting.
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• 0.48bmt CorruDek Sheeting is to be installed to the identical purlin material and fixed using
the same screw and washer assemblies (minimum screw length 65mm). The screws are to be
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manufactured from the same screw material, have undergone the same heat treatment, have
the same thread form and dimensions remain unaltered.
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4. RPFL Cyclonic Testing of 0.55bmt CorruDek® G300 Steel Grade, Fixed into Steel Purlin

Testing on the CorruDek® roofing profile has been carried out at the Cyclone Testing Station,
James Cook University, Townsville, Queensland. The cyclic tests have produced the following
results refer to Report No:

TS1002, dated 27 March 2015

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 CorruDek 6
The cyclic test results have been used as a basis for development of the load span table below.

Lo-Hi-Low Cyclonic Wind Uplift Resistance - Strength Limit State Test Results
Load Span Table
0.55bmt CorruDek® sheeting, G300.
Minimum steel purlin thickness, 1.5mm G450 grade.
Bremick 14-10x65mm screw with 25mm diameter, 1.0mm thick, Aluminium Bonded
washer used under the head of each screw and fastened at alternate crests.

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Recommended limit State Design Wind Pressures

Cladding Base End Span Internal Span Recommended Cyclonic Ultimate Limit
Metal Thickness Length Length State Design Wind Capacity

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(mm) (mm) (mm) (kPa)

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0.55 950 1200 4.78

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Notes:

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• It is recommended that a local qualified structural engineer check the suitability of the provided Ultimate
Limit State Design Wind Capacities provided in the load span table for the intended use/structure and
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site location.
• It is recommended that in the event of an extreme storm/extreme winds the cladding is inspected by a
suitably qualified builder/engineer to confirm the adequacy of the cladding and fasteners post event.
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It is our opinion that a qualified structural engineer may extrapolate for shorter spans and higher pressures
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provided that the screw force is not exceeded.

After exposure of cladding to an extreme wind event, it is recommended that inspection be performed to
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confirm fixing and cladding integrity.

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We, Fyfe Pty. Ltd., confirm that the procedures used in carrying out the cyclonic load tests on
product as listed above from for Roofing & Profiles (Fiji) Ltd., confirm to the structuralrequirements
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of the National Construction Code Series 2013 (NCC) and the relevant AustralianStandards:
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NCC 2013 (also known as the Building Code of Australia)

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Volume 1: Specification B1.2 – Class 2 to 9 buildings.

Volume 2: Part 3.10.1 – Class 1 and 10 buildings.
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AS 1562.1 – 1992 - Design and installation of sheet roof and wall cladding (Amdt 3-2012)
AS 4040 – 1992 - Methods of testing sheet roof and wall cladding
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Part 0: Introduction, list of methods and general requirements.

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Method 3: Methods of testing sheet roof and

wall cladding - Resistance to wind pressures
for cyclone regions, pressure test regime
as per BCA Lo-Hi-Lo.

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 CorruDek 7
5. RPFL Windborne Debris Impact Testing of 0.42bmt CorruDek ® G550
Roof application – Vertical Trajectories
Tests were carried out by the James Cook University, Cyclone Testing Station (CTS),
Townsville, Queensland, Australia. Refer to their report no.: TS988a, dated 27th March 2015.

Test Description:

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Where windborne debris loading is specified, the debris impact shall be equivalent to -

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(a) timber member of 4kg mass with a nominal cross-section of 100 mm x 50 mm
impacting end on at 0.1 VR for vertical trajectories; and

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(b) spherical steel ball 8mm diameter (approximately 2 grams mass) impacting at

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0.3 VR for vertical trajectories where VR is the regional wind speed given in Clause 3.2

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Target Velocity-Vertical Trajectories: Timber member: 10.9m/s
Spherical steet ball: 32.7m/s

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Equivalent Regional Wind Speed (V500): Vr= 88m/s (Region D)
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Tested Sheeting: Type: CorruDek
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Base metal thickness: 0.42bmt

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Material grade: G550

Tested Spans: Triple Equal Span: 1200mm

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Tested Fixings: Screws: 14-10x65mm fixed at each rib.

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Base metal: Minimum steel purlin

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Thickness: 1.5mm thick, G450

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6. Re: Letter of Opinion: Roofing & Profiles (Fiji) LTD (RPFL) - Windborne Debris Impact Testing
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of 0.48bmt CorruDek G550 – Roof application – Vertical Trajectories.
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Dear Sir,
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Fyfe Pty Ltd acted as a consultant technical advisor on your behalf for the Windborne Debris Impact
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Testing of the 0.42bmt CorruDek G550 sheeting profile. The testing was carried out by The James
Cook University in accordance with the requirements of the National Construction Code 2014
(NCC 2014) and AS/NZS 1170.2:2011 Structural Design Actions, Part 2: Wind actions, Section 2.5
Wind actions, Part 2.5.8 Impact loading from windborne debris-Vertical trajectories (roofing).

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 CorruDek 8
®
The following details for the 0.42bmt CorruDek were tested with all results acceptable:

Windborne Debris Impact Testing - Vertical Trajectories:

Target Velocity-Vertical Trajectories: Timber member: 10.9m/s

Spherical steel ball: 32.7m/s

Equivalent Regional Wind Speed (V500): Vr=88m/s (Region D)

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Tested Sheeting: Type: CorruDek

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Base metal thickness: 0.42bmt
Material grade: G550

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Tested Spans: Triple Equal Span: 1200mm

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Tested Fixings: Screws: 14-10x65mm fixed at each rib.

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Base metal: Minimum steel purlin thickness
1.5mm thick, G450

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It is our opinion that the 0.48bmt CorruDek , G550, sheeting profile with three equal 1200mm
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spans can achieve the wind debris impact testing results equivalent to the 0.42bmt CorruDek
G550, sheeting profile listed above if the following criteria are met:
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• 0.48bmt CorruDek sheeting is to be manufactured from the identical steel grade,
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G550, manufactured using the same roll former, have identical profile and dimensions
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to that of the 0.48bmt CorruDek sheeting.
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• 0.48bmt CorruDek Sheeting is to be installed to the identical purlin material and fixed
using the same screw and washer assembly. The screws are to be manufactured from
the same screw material, have undergone the same heat treatment, have the same
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thread form and dimensions remain unaltered.

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7. RPFL Windborne Debris Impact Testing of 0.55bmt CorruDek G550
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Roof application – Vertical Trajectories

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Tests were carried out by the James Cook University, Cyclone Testing Station (CTS),
Townsville, Queensland, Australia. Refer to their report no.: TS988b, dated 27th March 2015.
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Test Description:
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Where windborne debris loading is specified, the debris impact shall be equivalent to -

(a) timber member of 4kg mass with a nominal cross-section of 100 mm x 50 mm

impacting end on at 0.1 VR for vertical trajectories; and

(b) spherical steel ball 8mm diameter (approximately 2 grams mass) impacting at
0.3 VR for vertical trajectories where VR is the regional wind speed given in Clause 3.2

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 CorruDek 9
Target Velocity-Vertical Trajectories: Timber member: 10.9m/s
Spherical steet ball: 32.7m/s

Equivalent Regional Wind Speed (V500): Vr= 88m/s (Region D)

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Tested Sheeting: Type: CorruDek

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Base metal thickness: 0.55bmt
Material grade: G550

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Tested Spans: Triple Equal Span: 1200mm

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Tested Fixings: Screws: 14-10 x 65mm fixed at each rib.

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Base metal: Minimum steel purlin
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Thickness: 1.5mm thick, G450

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the wind debris impact tests on the RPFL 0.42bmt G550 and 0.55bmt G300 CorruDek® roof sheeting
conform to the structural requirements of the following Australian Standard & CTS Technical note:-
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AS/NZS 1170.2 :2011 Structural Design Actions, Part 2: Wind actions, Section 2.5
Wind actions, Part 2.5.8 Impact loading from windborne
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CTS Technical Note No.4 Simulated Windborne Debris Impact Testing of

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Building Envelope Components (Version 3)

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Notes:
• It is recommended that in the event of an extreme storm/extreme winds the cladding is inspected by a
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suitably qualified builder/engineer to confirm the adequacy of the cladding and fasteners post event.
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We, Fyfe Pty. Ltd., confirm that the procedures used in the testing program has been carried out in
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accordance with the requirement of the National Code Construction Series (NCC, 2013). The results
listed above for the Wind Debris Impact Testing for vertical trajectories only conform to the structural
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requirements of NCC and the following Australian Standards.

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• AS 1170.2 – 2011: Structural Design Actions, Part 2: Wind actions.

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ROOFING & SHEET METAL MANUFACTURERS
Build With Confidence
Factory Yalalevu, Ba Phone: (679) 667 3764 Fax: (679) 667 3674
info@roofingandprofiles.com.fj
Email: info@roofingandprofiles.com.fj Website: www.roofingandprofiles.com.fj
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