It’s recommended not to use bamboo as concrete reinforcement because it soaks up water in concrete causing it to swell and shrink. This can break the concrete.

http://www.networkearth.org/naturalbuilding/bamboo.html

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Nipa hut- One of the most basic examples with bamboo.

“The walls are split and woven bamboo, and bamboo slats and poles may be used as its support.”

Source- https://en.wikipedia.org/wiki/Bamboo_construction
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Floating Garden example