Rib and Block Slabs

Throughout the years we have evolved our rib and block concrete slab to a final product that we and our loyal clients are proud of. A slab that meets the needs of the unique South African contractor and home owner. Rib and Block slabs are South African Engineers and architects slab of choice… and we have perfected this product.


see our Wits University strength test


See Royal Concrete Slabs – Rib and Block Slabs Installation Video Here

Rib and Block Slab Benefits

Design Benefits

  • Flexibility and versatility of design approach
  • Spans up to 8m are easily achieved

Manufacturing Benefits

  • Factory produced to the highest standards
  • T Lintels are machine extruded and not made in moulds like our competitors, therefore the
    underside of our lintel is rogh, which serves as a good plaster adhesive surface
  • 40MPA concrete lintels is our standard, as opposed to 25MPA industry standards
  • Blocks made from quality aggregates with minimum breakages

Construction Benefits

  • Level Soffit – Lintels and Blocks fir perfectly, reducing plastering headaches
  • Most common slab system in SA for over 40 years
  • Well understood by all builders, contractors and sub contractors and South African unskilled
  • No cranes required, erection can be done by unskilled labour
  • Light fittings, electrical and plumbing are easily inserted by omitting hollow blocks
  • Eliminates Soffit shuttering (In-Situ Slabs) and no steel reinforcement is required

Suitable Applications

  • Hospitals
  • Schools
  • Residential/ Domestic
  • Town Houses
  • Retail
  • Office Buildings

View slab Installation gallery

Installation gallery

See Technical Details on our Slabs

View a Typical Slab Layout

Rib and Block Slabs