I recently built a structure with bamboos, inspired by the “Da Vinci bridge” (which is a specific simpler case of a reciprocal frame structure). Bamboos are neat: they grow fast, they are cheap (some people will just be happy if you cut theirs for free), they are quite strong and flexible, they’re relatively immune to rotting, though they’re organic and bio-degradable, but they are not always easy to work with when it comes to dimensioning…
One of the issues encountered when working with bamboos, is that they all have a slightly different radius (as opposed to standard-cut wooden lumbers). This implies that the distance at which you need to place cross-members in the Da Vinci bridge, in order to achieve a specific angle, must be computed for each of them. Nevermind the bamboos! I worked out the maths and quickly drafted this little calculator to get the values. Would you need it, it’s freely available from my GitHub repo.
