Introduction

SPI started the studies of first Iranian concrete armour based on recent experiences obtained through design & supervision of marine structures in Iran. These studies resulted in developing a concrete armour called Dezhpod which is a single-layer armour stable due to interlocking between adjacent blocks. Dezhpod armour with appropriate geometry has acceptable structural and hydraulic stability. Another advantage of this armour is easy construction and installation. Improving the efficiency of existing armours is one of the most important purposes of developing Dezhpod. That being so, the criterions mentioned below are considered for development of new armour:

• Hydraulic stability similar to Accropod, X-block, and Core-Loc
• Increasing structural stability in comparison with X-block and Core-Loc
• Decreasing concrete volume compared to Accropod
• Installation easier than other single-layer armours