Summary
Repair of 640 LF of an existing groin. Work involves the removal of old debris and metal sheet piling from the existing structure. The repair will involve the placement of new PZ-40 metal sheeting piling where applicable in the same location as the existing structure. The core of the groin will be repaired via the placement of angular armor stone weighing 1 to 2 US tons. The outside of the structure will be armored with larger angular armor stone weighing 10 to 13 US tons (typical). It is expected that around 6,600 tons of larger stone and 2,500 tons of smaller core stone will be required. A maximum of 390 LF of sheet pile will be installed. Approx. 22,800 SF of marine mattress will be placed underneath to prevent rock slumping and scouring. A concrete groin gap will be poured and placed over the sheet pile (up to 390 LF).