Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

First investigation will report in private

TWO INVESTIGATIONS will be held into the cause of the collapse at Nicoll Highway.

One, for the Land Transport Authority, is already under way and is expected to report in two to four months. Its conclusions are not expected to be made public.

The second, for the government, will not start until June. Its results will be publicly available.

Both investigations will seek to establish whether negligence was to blame for the collapse, and whether any party will be criminally liable.

Issues on the agenda include:

adequacy of temporary works design;

quality of materials and workmanship;

adequacy of supervision of the five or six tiers of subcontractors by the main contractor;

whether the LTA's supervisory regime was adequate;

accuracy and adequacy of instrumentation;

adequacy of the design against base heave;

whether struts had been removed to allow machine access and then replaced incorrectly;

whether jacks used to pre-compress the struts had been installed correctly, and whether they were working properly; and ladequacy of the connection between the base slab, diaphragm walls and heave piles.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.