Lower spaces are beginning to take shape, outlined by the footing trenches and their 95+% recycled content steel cages. The concrete pour is planned for tomorrow. Currently, the best recycled content concrete we can obtain is 30% flyash cement mix. We would like to use recycled aggregate but concrete suppliers are not keen to do this. The race is on to find the greenest possible concrete block for the next stage of work. We are hoping to work with local manufacturers of blockwork with some innovative ingredients.
Although we have had to install pvc for the initial drainage, we hope to work with a company who supplies push-fit polypropylene pipe for any further waste pipes. Polypropylene has far better environmental credentials than toxic pvc.