If you keep your water supply in plastic containers in a place with a concrete floor, store them either on a wooden pallet, or on a piece of cardboard.
Back then, the restaurant felt daringly stark: whitewashed walls and concrete floors, drinks specials on chalkboards, a high-ceilinged dining room with white tablecloths and wooden chairs, no music.
You can walk on solid ground like dirt, wood, or concrete because the attractive forces between the molecules are strong enough to hold all of them in place.