Weekends been a hard slog, leveling out the Crushed gavel for under the base. Because I'm putting down flat insulation panels that have groves for the In-slab heating the gravel needs to be very flat, have used the Transit Laser Level to get it within 1/2" all over. Glad I have but the blisters are saying otherwise....... Have finished the Cribbing for the Sunken Car hoist, and have rebar in place to spread the load, hope to get that concreted tomorrow..... then finish placing the Insulworks panels in the week and lay out the Heating pipes ready for concreting the rest next weekend... I hope...