Used by plumbers, landscapers Used by plumbers, landscapers and builders as stepping and builders as stepping stones, bases for hot water stones, bases for hot water tanks and pool pump equipment. tanks and pool pump equipment. Concrete slabs separated by Concrete slabs separated by decorative pebbles form a very decorative pebbles form a very attractive path as seen on attractive path as seen on many of the reality programs many of the reality programs like Burke's Backyard and The like Burke's Backyard and The Block. Block. Some slabs are reinforced Some slabs are reinforced which provide extra strength. which provide extra strength. Ideally slabs should be laid Ideally slabs should be laid on a bed of river sand to on a bed of river sand to evenly support the slab and evenly support the slab and assist in keeping the slab assist in keeping the slab level. level.