Last week the earth of Unit Villa B5 was excavated out to expose more Hidden risk under the backfilled ground. Once the wall was exposed half way, the tie beam between the beams had been found that Damage. Most of them was damaged at the middle, and 1 had been shear off at the joining part to the stump.

 

During construction time, 2 tie beams was provided to tie back the walls, one big and little wall. After this two walls was digged out, the tie beam also give way. HOLLY SHIT!!! it damaged in artistic way.

 

Our Professional Engineer comment that our backfill method was not carrying out in proper way. Tie beam is used to tie back the long member. By right it could not suffer any load at the middle from top. However, we continuing backfilled until the top, and earth beneath tie beam was not compacted properly. Therefore, once the earth had been topping up, loads on the beam increased, and earth beneath give way. That's the reason why the beam was damaged. Which means that that 2 walls still structurally safe.

 

This matter only settled by conversation. They haven't issued any black and white. So, it still a long way to solve this problem.