QUOTE(nexona88 @ Nov 30 2016, 08:36 PM)
based on news I saw.. they use Vietnamese, Bangla & Indon workers..
I suspect the the contractors took the easy way.. by using cheap material, cut cost here & there.. don't follow SOP

Workers is not the issue. Workers are always foreigners. Even PETRONAS Twin Towers was built with Banglas and Indons.
The 3 biggest problems with construction projects in Malaysia are:
1) Construction practices which are not in line with approved consultant engineering drawings - consultants are then paid off to approve the physical works especially if the consultants are employed by the contractors themselves which is a common thing when the contractors are big companies like IJM, Gamuda, etc
2) Inferior quality concrete - cement content at batching plant is reduced but Client is charged for full grade concrete
3) Inferior quality steel reinforcement - market is being flooded by cheaper, inferior steel from Taiwan and China which do not come with quality controlled mill certs. Most contractors in Malaysia send approved rebar samples with mill certs to the Client for quality control inspection but during construction itself, they use the non approved ones