Rain Water Collection

I poured the concrete slab for the rain water tank today, and I still feel pretty beat up, but should recover by tomorrow. Lots of digging and shoveling and mixing, all done the old-fashioned way. I now have to keep the slab wet, as properly cured concrete is stronger. I also put steel reinforcement inside for extra strength. The rainwater tank will weigh about a ton when full, and will sit about 3 feet off the ground.