Overview Hydrocast Armor Units are monolithic concrete structures that replace heavy rip rap and large precast concrete armor units, such as tetrapods. The rectangular fabric forms, when filled, assume a flattened cylindrical cross-section and range in size from roughly 180 pounds to in excess of 70 tons (80-64,000 kg) per unit. Available in custom sizes and shapes, the dimensions of … Continue reading HYDROCAST ARMOR UNITS PRODUCTS