At least 14 homes in six Tambones have been damaged in the northern province of Lampang's Wang Nua district that has been shaken by 25 quakes and aftershocks on Wednesday and Thursday.
The damage included the tiered umbrella top of a pagoda at Wat Phra Kerd in tambon Thung Hua, Lampang disaster prevention and mitigation chief Chaithawat Siwaboworn said on Thursday.
Experts from the Engineering Institute of Thailand (EIT) are to check on quake damaged houses and buildings in tambonThung Hua, Rong Koh, Wang Kaew, Wang Sai, Wang Thong and Wang Nua.
It was also reported that, during the most severe 4.9-magnitude quake, office buildings of the Tambon Rong Koh Administrative Organisation and the Tambon Thung Hua Administrative Organisation sustained cracks with some tiles falling down, prompting officials to evacuate.
The Thai Meteorological Department's Earthquake Observation Division (www.earthquake.tmd.go.th) said the Lampang quake situation stemmed from the movement of the Phayao Fault-line (which passed through Phayao, Lampang and Chiang Rai) and they would continue to monitor the situation for another two days.
Wang Nua residents were warned to stay clear of risky locations. So far, the 4.9-magnitude quake in Wang Nua at 4.05pm on Wednesday was the biggest and the latest aftershock of 2.6-magnitude occurred at 6.07am on Thursday.
Head of EIT civil engineering Asst Professor Anek Siripanichakorn warned people to stay away from walls or pillars with diagonal cracks. They could use wood planks or scaffold to support or reinforce such wall/pillar and call for experts to repair it, he said.
Royal Irrigation Department director-general, Thongplew Kongjun, said the country's middle- and large-sized reservoir structures were not affected by recent quakes. The Office of Engineering Topographical and Geo-technical Survey analysis found recent quakes' peak acceleration rates were not beyond the dams' quake-resistance levels.