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GEORGE TOWN: The State Commission of Inquiry (SCI) tasked with investigating the Tanjung Bungah landslide in October 2017 has found the design engineer of the slope primarily responsible for the incident that claimed 11 lives.
The SCI, in its 116-page report made public, has recommended that the engineer be investigated by the police under Section 304A of the Penal Code for gross negligence.
Besides the engineer, the commission found another design engineer responsible for being “contributorily negligent” for allowing excavation to be carried out without design, engineering calculations and supervision.
Chief Minister Chow Kon Yeow said the commission found that the slope failure was a man-made tragedy and entirely preventable if those in charge had taken necessary and proper steps to ensure the stability of the slope and the safety of the workers.
“The landslide did not develop overnight, it was a disaster waiting to happen over a period of time.
“There were ample warnings which were sadly unheeded or inadequately heeded,” Chow said of the report at a press conference at his office in Komtar here yesterday.
Chow said the report, dated July 22 this year, was a result of public hearings conducted over 26 days with testimonies from 28 witnesses.
“The commission also considered voluminous documents, reports, photographs and drawings, as well as the opinions of six expert witnesses.
“The report provides further analysis of the background facts, excerpts of testimonies recorded during the hearings and findings on liability against several parties,” he said.
The commission also found the Occupational Safety and Health Department negligent for failing to take adequate steps to ascertain the extent of the danger posed by the unsafe slope, by not promptly issuing a prohibition notice after its visit to the site on Aug 18, 2017, which was two months before the fatal incident.
Chow said copies of the report would be sent to the police, Attorney General’s Chambers, Board of Engineers Malaysia and other authorities involved.
“The report also contains nine recommendations that the commission hopes will serve as guidelines and prevent such incidents from recurring,” he added.
On Oct 21, 2017, a temporary slope in the construction site of a high-rise apartment block in Tanjung Bungah collapsed while workers were trying to stabilise it. Tonnes of earth crumbled, killing 11 workers.
The full SCI report can be bought at Level Three, Komtar, for RM50 per copy between Sept 3 and 30. For more details, call 04-650 5480.- Source link
Chow: Agencies have to act against negligent engineers
Penang chief minister Chow Kon Yeow
GEORGE TOWN: It is up to the relevant agencies to take action against the consultant engineers who were found negligent, resulting in the Tanjung Bungah landslide tragedy, says Chief Minister Chow Kon Yeow.
“It is up to the agencies and the police to take action as recommended by the State Commission of Inquiry (SCI).
“I have also directed the Town and Country Planning Department, Penang Island City Council, Seberang Prai Municipal Council and other related agencies to come up with recommendations to improve hill development.
“It was discussed at the State Planning Committee meeting and I have directed state housing, town and country planning and local government committee chairman Jagdeep Singh Deo to head the committee and come up with the recommendations within a month, ” said Chow at Komtar here yesterday.
It was reported that the SCI tasked with investigating the Tanjung Bungah landslide in October 2017 had found the design engineer of the slope primarily responsible for the incident that claimed 11 lives.
The SCI, in its 116-page report made public, had recommended that the engineer be investigated by the police under Section 304A of the Penal Code for gross negligence.
Besides the engineer, the commission found another design engineer responsible for being “contributorily negligent” for allowing excavation to be carried out without design, engineering calculations and supervision.
Penang Island City Council engineering director A. Rajendran, who was also present at the press conference, said the stop-work order on the project was lifted after the developer completed mitigation works.“However, different engineers have been overseeing the project since work resumed some time ago, ” said Rajendran.
On Oct 21,2017, a temporary slope at the construction site of a high-rise apartment block in Tanjung Bungah collapsed while workers were trying to stabilise it.
Tonnes of earth crumbled, killing 11 workers. - Source link
We’re a country with the 10th highest number of landslides in the world. Heavy rainfall and rugged topography are the reasons – but these are secondary. The main cause is man-made.
https://youtu.be/GeuT4KrdpZI
Malaysia among countries especially prone to landslides
Malaysia sits among the top 10 countries that had a high number of landslides over the past decade.
According to data from the US National Aeronautics Space Administration (Nasa), Malaysia had 171 landslides between 2007 and March 2016, making the country ranked the 10th highest in frequency of landslides.
Ranked first is the United States (2,992), followed by India (1,265) and China (426).
Titled the Global Landslide Catalog (GLC), the one-of-its-kind dataset was compiled based on online and media reports, and scientific journals since 2007.
The Star analysed the dataset and found that the number of landslides have been increasing in Malaysia, almost with each year, reaching a peak of 33 occurrences in 2014.
On average, in the past 10 years, Malaysia experienced 18.5 landslides annually.
The high number of landslides means that Malaysia ranked 5th for landslides per square kilometre among countries that have a land area greater than 100,000sq km.
Nepal is the country with the highest number of landslides per square kilometre, followed by the Philippines, Britain and Guatemala.
Most of Malaysia’s landslides occur between October and January, which coincides with the months with the highest rainfall. This is according to data on average monthly rainfall between 1991 and 2015 from the World Bank.
Sabah leads with the most number of landslides (42), followed by Kuala Lumpur (26), Sarawak (25), Selangor (22) and Penang (14).
Latitude and longitude data point towards certain areas that landslides commonly occur. These include Ranau in Sabah, Ringlet in Cameron Highlands, Bukit Antarabangsa in Selangor and Tanjung Bungah in Penang.
Nasa’s satellite view showed that most landslide occurrences in Malaysia are packed around the peninsula’s west coast, and Sabah and Sarawak.
Hardly any red dots could be seen in the Kalimantan region, south of Sabah and Sarawak, which could indicate that the landslides are caused by over-development.
Based on Nasa’s GLC website, since 2007, it has recorded some 10,000 landslides around the world, leading to more than 20,000 deaths, mostly in South-East Asia.
Data on Malaysia showed that most landslide fatalities are in Kuala Lumpur (18), followed by Pahang (17) and Selangor (eight).
The GLC project, first published in 2010, was to provide scientists with a dataset to analyse how, why and where landslides are likely to occur.
It remains the largest publicly available repository of global landslides.
According to the Meteorological Department, the country will be experiencing the northeast monsoon until the end of March, with heavy rains forecast along the east coast of Peninsular Malaysia, eastern Johor and Pahang.
A higher than average rainfall level of between 250mm and 350mm is also forecast for certain places in Sabah such as Kudat and Sandakan. In Sarawak, Kuching, Samarahan, Bintulu and Kapit are forecast to receive an average rainfall level that exceeds 500mm.
'Main cause is man-made'
Malaysia’s rugged topography and high rainfall coupled with human activities are behind the country being among the top 10 countries with the most number of landslides.
Institute of Geology spokesman Ng Chak Soon said Nasa’s data was correct.
“This is due to a combination of natural factors and human activities. Natural factors comprise periods of high rainfall and rugged topography while human activities relate to the cutting of slopes,” he said in an interview.
Asked if the high frequency could also be due to the type of soil in Malaysia, Ng said this was true only for Sabah such as in Ranau.
“Sabahan soil seems to have a high percentage of expandable clay which absorbs more water and expands more when wet. It shrinks when dry,” he said, adding that earthquakes were also a new factor in the state.
Not a country with typhoon or volcanic eruptions, Ng said the country’s only threat came from landslides.
“And, this is mostly man-made.
“Practically every major landslide in this country is linked to engineering works where slopes have been cut or built or filled with material,” he said.
To a question whether Malaysia had to change its type of development work such as slope cutting to reduce landslides, Ng said: “Apart from the coastal plains, most of our country is hilly.
“That means slope cutting is inevitable.”
He said there was a lack of in-depth understanding of the underlying factors behind landslides among “experts” in the country.
Whenever a slope failed as part of engineering works, he said it was engineers who looked into the causes of failures or what could have been overlooked, overestimated or underestimated in their calculations.
“It is unfortunate that most of these reports (into landslides) are not freely available for public scrutiny,” said Ng, adding that this made it difficult to identify the causes and to prevent similar mistakes from recurring.
He also claimed there was a lack of appropriate geological input in the study into the causes of landslides.
In many countries landslides come under the ambit of their geological survey departments.
“Malaysia is the exception where the Geoscience and Minerals Department is not playing this key role and there is a very good reason for this,” said Ng.
“Landslide as a geological phenomenon is a topic under engineering geology which is itself a branch of geology.
“Landslides began to be considered a problem only after the collapse of the Highland Towers in 1993.
“So, it is relatively new in Malaysia.
“To really have a better understanding of why slopes fail, we have to get the geologists involved,” he said.
Penang Apartment dwellers live in fear
Cause for concern: A view of the construction site where the paired road project is being built in Paya Terubong.
GEORGE TOWN: For the first time in the 10 years that he has stayed in his apartment near the Bukit Kukus paired road project, 62-year-old S. Santhara is worried.
That was where nine people died due to a landslide last month.
The retired fireman never had to worry about landslides because the hills behind his apartment in Paya Terubong were covered with trees.
“We knew the hills facing our block would not crumble as the trees held down the soil,” he said.
That was before the hills were cleared for the construction of the paired road project.
“As they started to clear the hills near my home last year, I worried about the stability of the slopes and whether there would be a landslide.
“Then, the Tanjung Bungah landslide occurred in October 2017 and I fear this place could be next,” he said.
On Oct 19, the landslide at the construction site for the paired road hit 12 containers that housed construction workers.
Besides the foreign workers who were killed after being buried alive, four others were injured.
The Tanjung Bungah landslide that struck the site of an affordable housing project in Lengkok Lembah Permai killed 11 workers, including a Malaysian.
A special committee, set up by the Penang state government, will begin investigations into the cause of the Nov 8 landslide at the Bukit Kukus project site in Paya Terubong.
Inquiry into the Tanjung Bungah landslide has yet to be completed.
The Bukit Kukus landslide, said Santhara, had taken place right behind the hill facing his apartment block.
Now, he said it was worrying whenever it rained.
“Anything can happen at any time. If I have the opportunity, I will move out,” he said at his home.
Already, he said, there was landslip on parts of the hill after the trees were cleared.
“There was erosion. It (the hill) has now been covered with sheets but we still worry when it rains.
“During rainfall, a lot of mud water wash down and drains overflow, spilling onto the road,” he said.
On the day of the landslide, K. Kalaiselvan, 43, who lives on the 18th floor of an apartment in the vicinity, heard a loud crash.
“It sounded like rocks and sand falling. Later, I realised it was a landslide.
“I am worried we could be next,” he said, adding that the slopes were bare and threatening.
“I run a coffee shop and have lived here for the past 15 years. This is my home.
“As I live on a really high floor, it is worrying whenever it rains,” he said.
Engineers: Put plan for a centralised agency into motion
PETALING JAYA: Set up a centralised national agency to really control slope safety, suggests the Institution of Engineers.
Its president David Lai (pic) said IEM had proposed the setting up of such a body years earlier and hoped that the government would look into this urgently.
“We had actually put in a position paper in 2002 on the classification of slopes into four categories according to the height and angle of the slope.
“We also had an update on the policy in 2009,” he said in an interview, adding that the two papers were conveyed to the Housing and Local Government Ministry that looked into building by-laws.
“We are still actively pursuing this matter,” said Lai.
He said there should also be a slope information management system put in place to identify risky zones.
“The government must take the lead in coming up with such a system. We can give recommendations but the government is the statutory body,” said Lai.
He was responding to Nasa data that put Malaysia among the top 10 countries with the most frequent landslides in the world between 2007 and 2016.
Lai said Malaysia should learn from Hong Kong which had to deal with several landslides in the 1980s until it set up a geo office.
“From then, they started to repair the old slopes and impose new guidelines. Now, they have managed to control slope failure,” he said.
He said IEM, which had some 48,000 members, had put in a recommendation that for development on critical slopes between 25° and more than 35° angle, there should not only be a submissions engineer but also a geo-technical specialist to check on the design.
Asked if there was a need for engineers to change their designs such as cutting or fortifying the slopes, Lai said: “We actually don’t need to change.
“We just need to make sure to put in place the required safety procedures.
“We just need to get the correct people and whether all these procedures have been implemented.”
He added that enforcement was a necessity.
He said with more hillside development, there was a need now for specialised geo-technical engineers, who knew soil conditions and behaviour, and incorporate this into slope design.
PWD working to keep landslides down
The Public Works Department (PWD) has been carrying out landslide prevention works on slopes along federal and state roads beginning this year.
The works, undertaken by its Slope Engineering Branch, will go on until 2020.
Among the measures being undertaken include evaluation, danger and risk mappings, and setting up of an early warning, real-time system for landslides.
Its director Zulkifly A. Ghani said the prevention works also included fortifying high-risk slopes along federal roads.
“For slopes along federal reserve and state roads, monitoring is being carried out by the district PWD via the visual method, such as site visits and inspections,” he said in an interview.
Zulkifly was responding to a question on the action taken by the department to monitor the slopes, particularly during the rainy season.
Last year, former works minister Datuk Seri Fadillah Yusof said 946 of the 16,454 slopes along federal roads in Peninsular Malaysia were classified as “very high hazard” while 1,551 others were “high hazard”.
Zulkifly concluded this with the latest technology of Light Detection and Ranging and drones.
“The Early Warning System is being developed,” he said.
Zulkifly said the EWS was being developed using monitoring techniques such as rain gauge, robotic total stations as well as the Global Navigation Satellite System.
“The equipment will continuously monitor any slope movement and the data transmitted to a server for analysis and displayed on a special website.
“Should the movement reach the danger limit, it will send a message to the officer via SMS. The officer will then decide what to do,” he said.
Forty-eight rain gauges had been installed at risky slopes.
“The real time warning limit is displayed on a special early warning website for landslides, which however is still being developed and improved on by the branch,” he said.
Source: The Star by Sim Leoi Leoi, Adrian Chan, and N. Trisha
STATE exco member Jagdeep Singh Deo should stop talking only of the 76m altitude restriction and also talk of 25-degree slope gradient restriction on hillside development.
According to The Star on Labour Day, state exco member Jagdeep Singh Deo wrote in his Facebook page: “I want everyone to get their facts right during this election campaign...”, and he went on to state that the Penang government did not approve projects on land more than 76m (250 ft) above sea level.
The Penang Structure Plan clearly states that sensitive hill land is defined not only as land over 76m above sea level but also slopes of more than 25 degrees; the development of such land is restricted to “special projects” only.
Any construction on slopes of more than 25 degree contravenes the second condition. Hillside development cannot be discussed only with reference to the altitude.
For slope stability, the higher the slope face and the steeper the angle, the higher the risk of slope failure.
While the previous Barisan Nasional government here approved many such hillside developments, the record of the present state government shows that more development on sensitive hillsides have been approved.
State exco member Chow Kon Yeow, in his reply to an enquiry in the State Assembly on November 2015, revealed that 56 high-rise towers have been approved on sensitive hill land between 2008 and end-2015.
In the case of the Tanjung Bungah landslide tragedy, DAP leaders claimed that the project was on flat land when it was evident that it was built on land that was once a slope and had been cut flat.
During the earthworks stage of that project, a 20m high, 60-degree angle slope was then formed at the boundary.
It was this slope that failed and buried 11 workers alive.
Under the Hillside Development Guidelines 2012, such a slope is classified as Class Three. Submission requirements include a geo-technical report by a geo-technical engineer and a geo-technical review report by an independent checker.
At present, another proposed project above the Miami Green Resort Condominium is on Class Four land (with slopes greater than 35 degrees) which is classified as “Environmentally Sensitive Areas with Disaster Risk”.
Under the draft Penang Structure Plan 2020, no form of development is allowed on such land.
A technical review of the site by Zeezy Global, a consulting firm, found that the proposed development is on a hill, on Lot 62, with height ranges from 40m to 140m above sea level.
Almost 50% of the slopes have a gradient of more than 25 degrees, and in some areas as steep as 40 to 50 degrees. Some parts of the area designated for construction are higher than 76m.
The project consists of two 34-storey towers of serviced apartments, each with 336 units, and a 20-storey “affordable housing” tower with 197 units.
Two retention ponds larger than an Olympic-sized pool with total capacity of 5.2 millon litres on the hill are planned to cater to expected high surface run-offs during and after construction.
The existence of such a huge mass of water poses potential risks to residents if the slopes de-stabilise during or after construction, particularly if monitoring, maintenance and enforcement are weak.
Existing gunite slopes in Miami Green are not designed for additional loading.
With the new project, exertion of loads at the upper slopes could endanger the residents.
The disturbance from the construction could affect the integrity of the existing slope. No assurance has been made regarding risks of landslides or slope failures during and after construction.
In light of the Tanjung Bungah tragedy, lessons must be learned. If the local and state authorities do not have the technical capacity to implement, monitor and enforce the present hillside guidelines, a moratorium on hillside development should be imposed until such time that this problem is resolved.
The public should not be put at risk anymore. Eleven lives were lost and hopefully not in vain.
By Dr Lim Mah Hui Former Penang Island City councillor
Dr Lim says hillside development cannot be discussed only with reference to the altitude
