Building codes known to be lax before quake

ISTANBUL — Turkey has for years tempted fate by not enforcing modern construction codes while allowing — and in some cases, encouraging — a real estate boom in earthquake-prone areas, experts say.

The lax enforcement, which experts in geology and engineering have long warned about, is gaining renewed scrutiny in the aftermath of this week’s devastating earthquakes, which flattened thousands of buildings and killed more than 23,000 people across Turkey and Syria.

“This is a disaster caused by shoddy construction, not by an earthquake,” said David Alexander, a professor of emergency planning at University College London.

It is common knowledge that many buildings in the areas pummeled by this week’s two massive earthquakes were built with inferior materials and methods, and often did not comply with government standards, said Eyup Muhcu, president of the Chamber of Architects of Turkey.

He said that includes many old buildings, but also apartments erected in recent years — nearly two decades after the country brought its building codes up to modern standards. “The building stock in the area was weak and not sturdy, despite the reality of earthquakes,” Muhcu said.

The problem was largely ignored, experts said, because addressing it would be expensive, unpopular and restrain a key engine of the country’s economic growth.

To be sure, the back-to-back earthquakes that demolished or damaged at least 12,000 buildings were extremely powerful — their force magnified by the fact that they occurred at shallow depths. The first 7.8 magnitude quake occurred at 4:17 a.m., making it even more difficult for people to escape their buildings as the earth shook violently. And President Recep Tayyip Erdogan has acknowledged “shortcomings” in the country’s response.

But experts said there is a mountain of evidence — and rubble — pointing to a harsh reality about what made the quakes so deadly: Even though Turkey has, on paper, construction codes that meet current earthquakeengineering standards, they are too rarely enforced, explaining why thousands of buildings crumbled.

In a country crisscrossed by geological fault lines, people are on edge about when and where the next earthquake might hit — particularly in Istanbul, a city of more than 15 million that is vulnerable to quakes.

Since the disaster, Erdogan’s minister of justice said it will investigate the destroyed buildings. “Those who have been negligent, at fault and responsible for the destruction following the earthquake will answer to justice,” Bekir Bozdag said Thursday.