Ceiling   11/2005 The work on the ground floor walls is finished. A special levelling construction was made to adjust the height of the ceiling and fix it in place. Bamboo poles are fixed in three orthogonal layers and tension belts are used to position them accurately before fixing them with steel pins and nylon lashing. After the auxiliary construction was removed, a layer of bamboo boards was laid upon the central layer of bamboo poles placed and filled with ”Weller” straw-earth mixture.