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Specialized Engineering

Engineering projects that have demanding specifications and requirements call for creative solutions. T T J is well equipped to meet such special challenging engineering works.

TTJ has successfully designed and developed a comprehensive range of standard two-rail and three-rail aluminium parapets for use in flyovers and expressways. The parapets have proved not only convenient to install, but also aesthetically pleasing.


All the parapets have been built to the stringent requirements of the "United Kingdom Department of Transport-Technical Memorandum on the Design of Highways Bridge Parapets BS 6779 Part 3 : 1984", and had been tested and authenticated by full scale vehicle impact tests carried out in the United Kingdom.


As an approved supplier of blast doors for public bomb shelters in Singapore, TTJ has fabricated and installed numerous bomb shelter doors for the HDB, MOE and SMRT. These specialty doors are built of very thick heavy steel plates and sections and specifically designed as effective shelters against bomb blasts.

Structural Engineering
Mechanical Engineering
Specialized Engineering
Aluminium Parapet
Bomb Shelter Door