Saturday, June 25, 2005

October - November 2005

This picture shows how the area was very huge, up to 10,000 sq.m.

The light brown colour silty clay soil dominated the whole area, this picture was taken before the rain came into the site. It was nice to work with the dry silty clay; harder surface to be passed through by any equipments, nice looking and easy to be developed.

Two mobile cranes were in preparation for starting the works, and the excavator was doing an excavation to clean the area around the bore piles.

This right side picture shows the other main mobile crane had just finished its drilling works.

This left side picture shows one of the service crane was starting to take the reinforced steel bar to the drilling hole.

The reinforced steel bar would be installed inside the steel casing, and poured by 350 kg/cm2 strength concrete

The right side picture shows several bore piles foundation that had been finished. The excavator had cleared the soil around the bore piles.

This picture was taken after some light rain had come to the site, and the silty clay had shown its terrible charateristic. Its density changed dramaticaly, from hard became slurry and the mass and volume were floating.

Now we have the trully enemy of the projec
t, the silty clay. (Site Operation Manager 1, Nov. 2002)

This left side picture shows, one team of supervisors was doing a marking for level of height on the bore piles.

The marks would be taken as a guidance for doing the next step of works, and gave the information about the level of high of the current position at the current location.

We have always no enough soil informations from the client. We were doing an extreemely high risk works. (Site Engineering Manager, Nov. 2005)

This shows another picture of the situation after the rain had come to the site.

The view became terrible, filled with water anywhere, and the "mud" of silty clay made traps for everybody who walked to the site.

The picture also shows that the neighbours' wall were very tight, and there were no have any space at all with the neighbours' property.

The Project Manager urged to provide daily monitoring system to the condition of the neighbours' buildings. If the walls are moving at least more than 1,5 cm, then their properties will rumble and we will take many lives of our neighbours (Project Manager, Nov. 2002)

This left picture shows how the site supervisors doing their supervisory works.

Work faster means no ignoring the quality of work (Ir. Issa Darujati, West Java (4th) Branch Manager).

The picture shows one of excavator was doing a site access preparation.

The access will be used for the next excavation works for providing high mobility to all the equipments which will be involved in the huge excavation works.

Main ramp was partially developed, and it would become the main access for the excavators, dump trucks, and any other equipments.

The main key for succesfull top-down construction is in the making of the right and proper access of the excavation works. That is the soul of our project. (Project Manager, Nov. 2002)

This left side picture was taken on the begining of november 2002, when the main ramp had nearly finished.

The left side small building on the picture was the temporary site office of the project.


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