Fifteen years ago, Holger Rust, owner of Terraforce, a local and international pre-cast concrete block licensor, developed a new retaining block, the 4x4 Multi Step block, a light, dry-stack concrete unit, generally used for constructing low terrace walls, stairs and seating arrangements. Aimed at providing efficient and economical steps in conjunction with the original retaining blocks designed by him, they soon became very popular not only for stairway access but to provide comfortable, practical stairs & seating arrangements at leisure amenities & school sport facilities.

• See the Installation guide - a photographic case study of an 4x4 installation
  
  
• Notes on the installation of seating arenas
  
  
• To download Spec Sheet in PDF version Go to Download page section 7
  
  
• Click here for examples.

Rust designed the block specifically with such versatility in mind: "When used for retaining, the 4x4 Multi Step block has a unique design that allows you to simply stack up the units without mortar, and the corner interlock gently handles convex and concave curves. The wall angle can vary from vertical to shallow slopes, and steps can be created by turning the block on its side. It can also be rotated for four different elevation choices, and the design allows you to make plants part of your wall."

Click here for basic installation instructions.

INCLINATION	RISER (mm)	TREAD (mm)	SEAT (mm)
angle	A	B	C
23°	150	350	750
31°	200	330	710
35°	200	300	650
39°	200	250	550

Depending on local conditions and finish required, it may be advantageous to grout the joints with sand/cement slurry. Consult your local dealer about colour matching, further details, design information, & quotation.

Cross section 1	Cross section 2