Wednesday, 28 January 2015

PROGRESS AT THE BRIDGE ON 22 JAN 2015


 

There was a flood again on 21st January where the average depth at Penampang was around 3 ft deep.

Next day I check out the bridge to see what effects the floods as per these pics.


Backfill behind the retaining wall turfed with grass.  See how it prevents the soil erosion.



The Right Hand Bank abutment under construction was also filled with flood water




Flood after one day, this photo here shows the space previously filled with gravels for construction access, now able to pass the flood waters.




Connection rebars to connect the beams to the top slabs of the bridge.



Preparing the formwork and falsework for the bridge slab.



Hydraulic flow of the flood waters on the bored pile column.




Construction of the highway drains after the bridge on the way to Donggongon.

Tuesday, 13 January 2015

PROGRESS AS ON 8 JANUARY 2015

Hi folks.

I pass the old bridge everyday for my breakfast at Donggongon Town and see some activities that I deem mundane.

However on 8 January I saw that there is a big tall crane which I was told by the crew can carry up to 1000 tons. Wow.

And they had already installed 3 shorter rectangular cross-section reinforced concrete beams. So I parked my car a few metres away as usual, then walked to take pics and see how they installed the beams.

Not long after that a long truck came carrying just on of the beams, number 4 and they proceeded to install it by lifting it from the lorry and placing it between the pier and the abutment. The traffic was held for just 5 minutes away from the beam being lifted by the crane.

As soon as the beam was lifted up, the truck moved on and the traffic was allowed to continue as soon as the beam is safely away from the road, as you can see from the attached video.

Here are some pics I have taken.

 Rubber bearing at the left abutment

 Rubber bearings at the left Pier
Not the size with the standard carpenter levelling instrument

 The 1000 ton crane lifting the fourth r/f concrete beam

 The pier at the RHS of the river, only the fibre based is fixed, without the rubber bearing because here, the abutment is not even casted yet.


2 pics showing the RH pier while the abutment is yet to be constructed. Only the bored piles are completed here.

 Back to the left bank, a closer look at the rubber bearing

 The fourth beam after being installed in about 15 minutes






The last 6 pics showing the 5th beams being lifted from another truck and installed.

video here:


Thursday, 25 December 2014

PROGRESS ON THE BRIDGE JUST BEFORE CHRISTMAS

These pictures were taken on 18th December 2014

The pre-stressed beams are still not installed because their lifting cranes must still be used elsewhere on another bridge construction

So they dug up the temporary fill and reinstated the slope of the river bank protecting it with gabions and concrete surface, so that flow of water during floods will not be hampered under the bridge.

See for yourself if you like them.



 Note the one row of gabions at the bottom of the concreted slope.

 Full view of the concreted slope


 Excavator stabilising the bottom of slope near bottom of river


 Excavating the RH bank to do the same type of concreting


Meanwhile down below, a crane is hoping to catch fish from the river.

Tuesday, 16 December 2014

SLOW PROGRESS THAT'S WHY I HAVE NOT BEEN UPDATING THIS BLOG REGULARLY

Yes, there are activities on the bridge but there seemed to be not much work completed.

It is nearly Christmas and they still have not installed the prestressed concrete beams across the river.

Instead they dug out the temporary backfilled that was supposed to be used to drag the beams nearer the pile caps.  I believe the contractors methodology may not have been approved by the authorities so they must have our submitted a new method.

Anyway the first set of photos were taken on 14 Nov 2014 while the completed backfilled works on the retaining wall was taken on 11 December.

 Moving granular earth to fill behind the wall

 The temporary fill removed before the beams were installed. Also the beam bearings still not fixed.

 Very muddy water which must have come from the 200 acres hill cutting at Togudon near Kg Notorus

 View of RHS of river bank

 More earth fill works



Last two pics taken on 11 December showing the final backfilled works behind the retaining wall. Hmmm very expensive wall this is and lucky owner of the land above.
The excavator is even shaping the clay earthfill on top of the wall to match the existing shape of the hill.

Monday, 10 November 2014

UNDERNEATH THE BRIDGE AFTER FLOOD - Pics taken 20 October 2014

Hi folks,  yes I know I have not update this for a while and sorry for that because I had lots of other news to follow up for the printed media.

Anyway, after the first two floods in October 7th and 10th, I went down below the bridge because the mud at the river bank was reasonably dry to walk on. I wanted to find out if the works on the bridge did contribute to the higher flood levels.

In my opinion, it did as the photos below will prove, but most of them are temporary works and a JKR site supervisor I met did confirm to me that the bosses above scold them and the contractors for leaving the temporary works in the river, or maybe the works were rather slow. Of course afterwards all the rocks and earthworks were removed using the excavator and now the river bed is cleared of those rocks and the red earth for temporary access was partially removed.

This is probably the reason that the 3rd flood that occurred on 23rd November was quite low and receded very fast.

Anyway after I had taken the photos below, as I was walking back to my car, some stupid mad dog bit my legs at the ankle by surprise. The stupid dog simply came behind me without any sound so I was not aware such dog was around. There were two bite marks on both sides of my right foot and it was bleeding.  So I swore at the dog owner and threatened to make a police report. He apologised saying the dog got loose from whatever, and offered to take me to the hospital, which I refused because I was in a hurry to interview my new friend Mr James L.

I told the guy I am going to see my doctor friend at Donggongon to get immediate treatment. So I quickly drove in my car in he followed behind in his car.  After reaching the clinic at Donggongon, I got attended to quite fast because there was only one other patient waiting.

Dr Freddy assured me there is no known rabies here in Penampang, and just some wound treatment and anti-tetanus jab did the job very well. I did not feel any pain and the bite would simply closed up and healed. Lucky me eh?

Well, the dog owner footed the medical bill, shook hands with him and said I am in a hurry to go for the interview.

Oh well, here are the pics.


 Below the bridge, the temporary earth and stones there for access of excavator under the bridge did constrict the flow of flood water.


 The RH bank still have earth spills that may or may not be cleared after the works are completed.  If they are not cleared, I will submit the complaint to Daily Express.

 The earthworks being cleared. Definitely this contributed to higher flood levels.

 
Below the new bridge, you can see gabion wires and the sheet piles. Those are temporary works as part of the methodology to install the heavy prestressed concrete beams across the river.
 
 
Another view of the old bridge, which clearly shows the river has narrowed here due to deposition of old sediment. The old siltation sometimes collapse during floods as can be seen at the left bank.



Bamboo clumps that collapsed from the bank and fell to the bottom of the river also caused blockages and obstructions to the flow of the river. No doubt these are the main cause of high flood levels.


The beams are still waiting to be installed because I am told the contractor's big cranes are still being used in another project, so there is some delay on the works for this project

The stone filling here a temporary work as firm ground to install the beams above. Lot of people including myself were mistaken that this would be the road approach to the bridge. No man, this filling will be dug out and the river bank re-instated to its original slope once the long beams are installed and other short beams will be placed between those two concrete pile caps.



FINALLY,  the bambangan tree is DYING, just as I predicted.

After bearing its final bunches of fruits, the leaves are not green anymore, well what colour is that eh?  That is the colour of a dying tree.
Reason, the roots cannot breath and not getting oxygen and water after being covered with the red clay filling.

Bye bye, now where can I replant a bambangan tree with the RAJA Bambangan seedlings growing inside a polybag at my garden eh??

cheers, that's all for now.

oops, oh no!, I forgot about the great wall of china in Penampang, here goes.


The concrete drain is higher than the existing road by about 1.5meteres. This is because the height of the new bridge will be that higher and the road is going to be filled as a ramp to join the new bridge. But those land properties nearby will really looked ridiculous in future, he he he

I submitted this pic to the newspapers but the editors did not see it as newsworthy.