Kowloon Terminus

Qualifying accuracy & integrity of transportation infrastructure

The Mass Transit Railway Corporation (MTR) and the Hong Kong Government constructed the world’s largest underground high-speed train terminus connecting Hong Kong and Mainland China.

Consisting of 15 platforms and an iconic roof structure, it’s an engineering masterpiece formed from three lattice trusses supported at only nine locations.

The Challenge

Manufacturing, installing and erecting the structure timely and cost-effectively

The roof’s design was based on a pre-cambered 3Dmodel manufactured by different plants in Thailand and China. The challenge entailed achieving the required tolerance and accuracy of each component for a safe and seamless installation, presenting issues including:

  • Both manufacturers and the installation company had their own surveying and construction processes.
  • Varying climates between Thailand, China and Hong Kong would affect the steel’s overall integrity.


The Solution

Implementing standardised survey methodology

AAM reviewed and audited the current survey techniques surrounding the manufacturing and erection of the structure’s components including its final connection procedures.

  • AAM ensured all elements properly met geometric specifications and tolerances. We also recommended that First Principle and Best Practice Survey Methods be undertaken respectively.
  • Constructional processes were successfully standardised across all three countries.
  • We confirmed a working accuracy of 5mm was the only achievable result due to the project’s complex nature.

The Results

Complete confidence during the roof’s planning, coordination, installation and erection

We developed and presented an observational audit report of the proposed construction site and fabrication yards to MTR highlighting benefits including:

  • Confidence the structure would fit seamlessly upon commencement of erection.
  • The ability to pre-plan optimal crane locations and allocate accurate figures for additional staff.
  • Time and resource saving processes due to improved surveying accuracy.