1. HOLLOW & SOLID BLOCKS
• Hollow or Solid Block is a Concrete Masonry unit used primarily in wall construction, having any
one external dimension greater than the corresponding dimension of a brick, and of such size
and mass to permit it to be handled by one man.
• The height of the block does not exceed either its length or six times its width.
• Hollow Blocks have one or more cavities, which can be open or closed.
• Blocks are referred by their nominal dimensions generally having a length of 400mm, height of
200mm and widths most commonly varying from 100mm to 200mm.
• PBMA members provide a wide range of both Hollow and Solid Blocks.
• Reference Standard: IS 2185 (Part 1):2005 Concrete Masonry Units – Hollow and Solid Concrete
Blocks.
2. SEGMENTAL RETAINING WALL BLOCKS
• Segmental Retaining Walls(SRW) consist of modular Precast Cement Concrete Blocks that interlock
with each other.
• Segmental Retaining Wall Blocks are used in building retaining walls and provide a solid, vertical
front for earth/soil retention projects such as bridge construction.
• They provide technologically superior, cost-effective solutions compared to conventional soil
retention techniques.
• The modular nature of SRW blocks enables faster and easier construction of retaining walls.
• PBMA members provide SRW Blocks in different sizes, colours, and textures.