Thursday, February 23, 2023

Supporting the poor to rebuild

Türkiye earthquake. People in poorer areas suffered 3.5 times more damage than their richer neighbors[i]. Hence, their housing recovery takes longer, and many are expected to be poorly built or even left homeless. Government and aid agencies have to reduce this potential negative impact otherwise poverty and the social problem will get worse in the future.

Let the Türkiye government work on developing strategies and policies for a wide aspect of recovery not only housing and infrastructures. Hopefully, it will not stop only detaining building contractors for their alleged responsibility in the construction of buildings that failed to withstand the earthquakes. The problem has gone more than two decades. During the construction boom, the government failed to enforce the building code.[ii] It was a serious violation of the building’s safety. For instance, up to 75,000 buildings across the affected earthquake zone in southern Turkey have been given construction amnesties.[iii] The amnesty suspectedly was not based on engineering calculation and the practice was vulnerable to corruption. Hence, the government should reform the practice of construction work to ensure all regulations and building code are enforced. Then people might expect the regulations will apply to anyone no matter their socioeconomic status.

Then what will be the contribution of aid organizations and social societies to the rebuilding initiatives?  Actually, there is various assistance that can be contributed, but at least there are two that can be offered to fill the gap. The gap is between the capacity of poor people to self-recover and the ability of the government to provide assistance.

First, support to balance supply and demand. At the peak of massive reconstruction, there will be a huge demand for construction materials, skilled builders, engineers, and various service providers. Inflation is inevitable, then at some point, only wealthy people can continue to rebuild. This should be anticipated as earliest as possible. Technical experts from aid organizations can suggest new approaches to construction from seismic retrofitting to new construction with various building materials. Depending on only a few methods and particular construction materials will create inflation. Construction training for homeowners, and local builders and developing the capacity of engineers are essential. Everyone related to rebuilding including the homeowner needs to be aware of building code and construction norms. Everyone must respect the law of how nature works. Earthquakes can still be a hazard and not turn into disasters if the infrastructure can absorb its forces.

Lastly, the provision of top-up assistance to the most vulnerable. The government might provide support to earthquake-affected people. But due to their socioeconomic condition, the poor and vulnerable people might find assistance does not be sufficient. Hence, identifying those who are vulnerable should be carried out very soon. These people should be prepared when the nationwide rebuilding starts. This specific additional support should also be agreed upon and supported by their neighbors and community leaders to reduce jealousy. The support might be the provision of additional funding, provision of construction materials, and builders, and oversight on the construction process.

These initiatives basically are to bring the poor and the vulnerable people to the same level as their neighbors. If the government enforces the code that must everyone follow, then we can expect everyone to have sufficient capacity to abide by the law. Then the build back safer can be achieved.

Arwin Soelaksono

Photo: The Journal[iv]

Friday, February 10, 2023

Investigating caused of massive damage on Turkey earthquake

This aerial video[i] at Antakya, Hatay Province, Turkey shows the massive devastation of the buildings. Horrific but also raises questions. Why did so many buildings totally collapse but others still stand? This is a valid question since the earthquake in just in Hatay Province has claimed more than 3,300 [ii] lives.

Earthquake is known as natural hazard since these areas already have had earthquake before. For instance, the 1999 Izmir, Turkey earthquake caused more than 17.000 deaths. Hence, they have building regulations so that when the earthquake does occur people can be saved with buildings and infrastructures still intact. By seeing the footage at least, we can suspect the cause of the disaster. There should be a back-and-forth investigation not only from the engineering side but also from the policy that local authorities might impose during the construction period and building services period.

 In my opinion, at least there are four aspects that need to be investigated.

 Firstly, the soil. By seeing the sporadic building collapse, we might suspect the failure was not because of liquefaction. If it was liquefaction, the collapsed building will be widespread, and no building still stand in the middle. But soil investigation still needs to be carried out to prove whether there was liquefaction has occurred.

Second, the Building Code and imposing the regulation. This is the role of the national government and local authorities. Does the government update the Building Code regularly to accommodate hazards that just occur recently and the new construction materials and technology? Do the local authorities strictly impose regulations? The problem was up to 75,000 buildings across the affected earthquake zone in southern Turkey have been given construction amnesties provided by the government - effectively legal exemptions for the payment of a fee, for structures built without the required safety certificates.[iii] In this case, the responsible party is the government itself.

Third, the construction vulnerabilities. This is due to poor construction practices caused by substandard material, missing elements in order to save cost, and unable to work on details. The construction failure underwent an earthquake due to people failing to work on details as they have to put on the reinforcement or stiffener. If the structure is properly constructed there are elements intended to absorb the earthquake load. The structure may be broken in particular parts but the whole structure is still intact, and the occupants are safe.

Lastly the usage. Has the building been used according to its classification? Each classification such as residential, storage, and assembly has a specific design load. The building owner or management has to ensure there will be no change in how the occupants use the building. It is a risk if a floor in an apartment that should be used for residence, then it changed for business or storage. Or even worse if they use the top floor as storage which adds a significant load. Such a heavy load on top of the building like this might increase the vulnerabilities of the building under lateral earthquake load. People might ignore these practices since they might think, during the design the engineer already put the load factor and the safety factor. This perception can cause fatal consequences since load factor and safety factor have been added to cover unforeseen aspects and not to cover intentional purposes.

By accurately understanding the cause of massive damages government and aid agencies can deliver their assistance accordingly. This is to bring every party to take the recovery in a more accountable process and to avoid any hustle for swift rebuilding. Quick recovery but without changing the ecosystem to produce buildings and infrastructure that can withstand an earthquake will definitely repeat the same mistake.

 Arwin Soelaksono


[i] https://twitter.com/suraiyajab33n/status/1623718196728455171

[ii] https://www.voanews.com/a/rescuers-search-for-earthquake-survivors-in-turkey-syria-as-death-toll-nears-12-000-/6954867.html

[iii] https://www.bbc.com/news/64568826