In the preparatory meeting and site inspection we found out that AFAS really needed a shade roof at their greenhouse and riding center outside Tomelloso. Temperatures there rise up to 45 degees Celsius in summer.  Looking at the disposable materials - we would like to reuse as much as possible - we came up with the idea of bilding a pergola. We really fancy the idea of building a geodome inspired construction.

Here some first models:

Toothpicks and glue:

Reused wood and an old tube

3-meters-diameter Kruschke 3V model built with wood and tubes