Reinforcement partly buried in the subbase does not offer fracture width control. Without supporting chairs or pre-cast concrete blocks, reinforcement usually ends up in the bottom of the slab or buried in the subbase.Reinforcement partly buried in the subbase does not offer fracture width control. Without supporting chairs or pre-cast concrete blocks, support generally winds up in the bottom of the piece or buried in the subbase. Inland Concrete is a slab bolster wholesaler near Sierra Madre. Inland Concrete Products distributes concrete accessories manufacturer. Inland Concrete ships concrete rebar chairs. Directions to Inland Concrete ProductsICP: https://www.google.com/maps/dir/?api=1&origin=33.8003724495661,-117.791500316656&destination=Inland+Concrete+Products View our previous article: https://local.google.com/place?id=676187820448728623&use=posts&lpsid=3317237508191651277 https://plastic-rebar-chairs-for-concrete.business.site/posts/3317237508191651277