NOTE -- I would not be at all surprised if Christian hasn't already posted about this on his site, or if he hasn't he will make plans to travel to Chiang Mai.

 

From Lonely Planet

 

 

Commissioned by Panyaden International School in Thailand to design them a sports hall, Chiangmai Life Architects (CLA) opted to use a local and abundant natural material; bamboo. The result is an impressive fete of engineering that’s expected to last at least 50 years.

 

According to CLA, a firm who specialize in bamboo and earth architecture,“the brief was to build a hall that should be big enough to hold the projected capacity of 300 students, but still smoothly integrate with the previous earthen and bamboo buildings of the school, as well as the natural hilly landscape of the area. It should provide modern sports facilities and use only bamboo to maintain the low carbon footprint and the Green School mission of Panyaden.”

 

Incredibly, due to the way the bamboo is woven, supportive reinforcements weren’t necessary. “The sports hall utilizes prefabricated bamboo trusses to span more than 17 meters without steel reinforcements or connections. It combines modern organic design, 21st century engineering and a natural material. The bamboo was all well selected for age, and treated with borax salt. No toxic chemicals were involved in the treatment process.”

 

Continues with other photos

https://www.lonelyplanet.com/news/2017/09/05/panyaden-international-school-thailand-sports-hall/

very impressive 

This is new to me, thanks for sharing. 3 km by air from Grand Canyon Chiang Mai (an abandoned quarry that filled with rainwater and is used for swimming now).