Pool day 14: wet and dilatation joint

This seemed such a good idea: unpack the pallet of gresites and spread the boxes over the floor of the pool, to spread the load a bit. If you keep the pool wet by spraying neatly, that is fine, as you see below. But if someone else splashes everything with lots of water the boxes get wet, the cardboard gets wet, and the gresites too. Well, the gresites like water, but they are glued to a mat, and that glue loses grip when wet. We were just in time to put the boxes upside down and remove the wet parts. The atmosphere was a little less great for a while.

Around the pool a dilatation joint. Because, when it gets very hot the concrete will expand, about 0.5cm per 20º, and may damage the pool.