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G550 Steel Roof Fastening Pattern Tables

Wind Speed as per NZS 3604:2011 Timber Framed Buildings

Windspeeds below are the maximum ultimate limit state wind speed for each wind zone.
L=Low wind speed of 32 m/sM=Medium wind speed of 37 m/s
H=High wind speed of 44 m/sVH=Very high wind speed of 50 m/s
EH=Extra high wind speed of 55 m/s  
SED=Specifc Engineering Design (not covered by NZS 3604)  
(optional caption)

 

0.40 mm Corrugate G550 Steel (Min Depth 16.5 mm)

 Wind zone as per NZS 3604
AccessSpan (m)LMHVHEH
Restricted 0.6C2C2C2C2C4
Restricted 0.9C2C2C3C4C4
 Non-Trafficcable1.2C3C3C4C5N/A
(optional caption)

 

 

0.55 mm Corrugated G550 Steel (Min Depth 16.5 mm)

 Wind zone as per NZS 3604
AccessSpan (m)LMHVHEH
Unrestricted0.6C2C2C2C2C2
Unrestricted0.9C2C2C2C2C3
Unrestricted1.2C2C2C3C3C4
Restricted1.5C2C2C3C4C4
(optional caption)

 

0.40 5 Rib Trapezoidal G550 Steel (Min Depth 27 mm)

 Wind zone as per NZS 3604
AccessSpan (m)LMHVHEH
Restricted0.65T25T25T25T25T2
Restricted0.95T25T25T25T35T3
Restricted1.25T25T25T35T45T4
(optional caption)

 

0.55 5 Rib Trapezoidal G550 Steel (Min Depth 27 mm)

 Wind zone as per NZS 3604
AccessSpan (m)LMHVHEH
Unrestricted0.65T25T25T25T25T2
Unrestricted0.95T25T25T25T25T3
Unrestricted1.25T25T25T25T35T3
Unrestricted1.55T25T25T35T35T4
(optional caption)

 

0.40 mm 6 Rib Trapezoidal G550 Steel (Min Depth 27 mm)

 Wind zone as per NZS 3604
AccessSpan (m)LMHVHEH
Unrestricted0.66T36T36T36T36T3
Unrestricted0.96T36T36T36T56T5
Unrestricted1.26T36T36T56T56T5
(optional caption)

 

0.55 mm 6 Rib Trapezoidal G550 Steel (Min Depth 27 mm)

 Wind zone as per NZS 3604
AccessSpan (m)LMHVHEH
Unrestricted0.66T36T36T36T36T3
Unrestricted0.96T36T36T36T36T3
Unrestricted1.26T36T36T36T36T3
Unrestricted1.56T36T36T36T56T5
(optional caption)

 

Clause: 
003_010_001_000_000_000_000_000_000
Clause Number: 
3.10.1
/cop/structure/fastening-pattern-tables-designs-nzs-3604#g550-steel-roof-fastening-pattern-tables
Revision Category: 
1 - Minor Errata
Revision Detail: 

Clause has been renamed to clearly differentiate between roof and wall cladding fastening patterns.