Technical seminar on the latest technology of anchor test and BIM to underground utilities
By Ir C S LAM
The captioned seminar was conducted on 13 August 2019. The first speaker, Mr K M Wong, reminded us that a rebar coupler test should comply with the test requirements of the General Specification for Civil Engineering Works 2006, Volume 2, clause 15.35 for tensile strength and permanent elongation requirements.
He informed us that there are two types of coupler tests: type 1 and type 2, each with different parameters. The performance of type 1 may be used as an alternative to tension or compression laps should permanent elongation after load (0.6 yield) and tensile strength meet specific requirements. Type 2 performance consists also of a static tension test, a static compression test and a cyclic tension-and-compression test. The requirements of the Code of Practice for Structural Use of Concrete 2013 clause 3.2.8 should also apply. Again, the test method was demonstrated through photos and videos.
The second speaker, Mr Zico Kwok, presented the building information modelling (BIM) application for underground utilities: capital work projects of more than HK$30 million shall adopt BIM technology. The Construction Industry Council (CIC) is one of the initiators in promoting BIM application to the underground utilities sector.
It published and released the “CIC Building Information Modelling Standards for Underground Utilities” in July 2019. For underground utilities surveys, it should cover surveying location, conditions and management. There are many types of underground utility networks/systems, which consist of, but are not limited to, gravity flow networks, pressure networks, electricity, telecommunications and others such as foundations and tunnels.
BIM has many standard applications such as Public Available Specification (PAS) 1192, BS1192:2018 Collaboration and Principles, PAS 1192-2:2013 Capital/Delivery Phase, PAS1192-2:2014 O&M Phase, PAS1192-4:2014 COBie, PAS1192-5:2015 Security, New BIM ISO 19650-1:2018 Concepts and Principles and ISO 19650-2 Delivery/Phase of the Assets. Basic principles of ground penetrating radar and case sharing, including 3D scanning applications for several work activities were also demonstrated.
The seminar ended with a question-and-answer session.
Ir C S Lam presenting a souvenir to the speaker Mr Zico Kwok (R)