CHEK LAP KOK - A case study in Plate Centreline Segregation Cracking

Chek Lap Kok international airport in Hong Kong, built in mid 1990s, is a massive building involving ca 20,000 tonne of structural steelwork. The structure is a dia-grid comprising 123 modules each constructed from 4 steel plate girders arranged in a 45° star-shaped pattern connected to a central division plate. During routine NDE this central division plate revealed a deep central crack which Professor Michael Burdekin diagnosed as centre-line segregation cracking (CSC).

The talk tells us how the CSC was discovered, its frequency of occurrence and how the cracks were tested and repaired (using fracture mechanics as a basis) working in conjunction with the designer. The speaker will also show how CSC is incorporated into HK’s Structural Steelwork Code and how this phenomenon re-occurred again in HK’s High-Speed rail terminus building in West Kowloon

BENEFITS OF ATTENDING THIS EVENT

• Information transfer from experts
• Discussion, questions and answers on the specific topics
• A broader understanding of CSC and how it can be tested and repaired
• Attendance of this event qualifies for CPD 

The Welding Institute awards points towards CPD for delegates attending this webinar. Every hour attendance of an event will earn 2 points towards your continuing professional development.

MEET THE SPEAKER: Bill Frankland FREng, CEng, FICE, FHKIE