Hari Kedua (2nd Day)

Another excitement day with visiting the infrastructure drainage system in Prai, Penang. The company is undergoing the process of upgrading the current drainage system to bigger drain. There are about two different location of the drainage system. First, the flow will go through Station Pump A while the other one, the flow will go through Station Pump B. Both flow are coming from Prai industrial park. Why the drain should be changed to much more bigger? It is because the current drainage system cannot support the flow during peak hour due to heavy rain or monsoon season. Moreover, it is also to prevent flood.
The drainage system which will flow through Station Pump A is already finish. Now, they are working on the second drainage system which the flow will go through the Station Pump B. The pump is for pumping the flow from flat land to sea. Why pump is needed? From the briefing, the sea level is actually higher than the flat land. So, that is why pump is needed to pump out the flow from flat land to the sea to prevent overflow.
Let me brief about how the drain looks like. The drain consist of L-shape and Slab rc concrete with rc piles.
Before starting the work, the surveyor will come and overview the place for the leveling process. After the surveyors done the jobs, they will give data about the levels of the drain and the location of the process of digging the hole to make the drain.
Then, the level will be mark. At certain location, the level will be different so the marking process should be done accurately to make sure the drainage system straight.
After the marking system done, the piling process will be the next. 250x250mm piles are used with 21m depth. (will be brief more once I am experiencing about the piling process)
Once the piling done, they will make coffer dam with using sheet pile to prevent the soil from collapse during the digging process.
When the digging process finish, the slab will be placed on the piles and screw them for tightening. Then, the L-shape concrete will be placed on top of the slab. The L-shape also will be screwed to tighthen between the slab and piles to make sure they are stay at where they are placed.
The finishing process will be on touch up the gap between the slab and L-shape and between L-shape and L-shape. The material that used for filler are sika. Sika is one of the filler used to fill in the gap appeared between the concrete.
The picture will be uploaded soon!!!