Seawalls & Bulkheads: Commonly Used Terms and Definitions

The buried portion of the tie-back rod that is typically a reinforced concrete block, which engages the soil to resist the pull on the tie-back rod. Also known as a deadman.
The angle from plumb (vertical) deliberately constructed for a bearing pile.
The ground or soils which support the base of the panels, may also include rip rap.
Any solid vertical structure, which serves to separate landward real property and/or any improvements thereon from any natural or manmade body of water. Typically constructed in areas experiencing mild to moderate exposure such as protected waters in rivers, canals, bays, etc.
The component on top of the seawall panels used for alignment and/or structural support.
Poured concrete block approximately 10’ to 15’ landward of the seawall, connected to seawall with tie rods, used to anchor the structure.
Soil loss from the landward side of the seawall.
The height of the exposed bulkhead as measured from the berm to the top of the cap.
A geosynthetic fabric manufactured specifically as a filter to inhibit soil movement through the fabric while allowing water to pass through.
A trench dug parallel to the seawall directly adjacent to the cap, common dimensions being 2’ width by 2’ depth, lined with filter fabric and filled with 1” rock. The system is used to allow water to pass from the soil through the seawall in order to relieve hydrostatic pressure.
The pressure caused by water.
Concrete or wood poles, typically used as supports for docks and boat lifts.
The portion of the sheet pile that extends vertically downward through the “toe-berm”, penetration should be a minimum of 33% of total sheet pile length.
The portion of a seawall that is parallel to and abutting the adjacent property line, usually this wall is short and is approximately one foot below grade. The return wall