I had Gavin and the boys build an engineered slab for a 9 x 9.5 m shed on a sloping block. The rear of the shed involved a drop-edge beam of a meter or so and half of it was suspended slab construction. The job was completed with minimal fuss and achieved a good finish. Ended up needing a bit more slab fill and concrete than first estimated but at the end of the day I wanted a good job. Happy.