Seawalls are used for:
Leveling of a yard
Increase of property size and value
Easier access to water
Listed below are the different types of vertical seawalls that we install:
Concrete seawalls are the most common and durable. These slabs are precast and normally manufactured off site. The panels are normally 6 inches to 8 inches thick and have 5,000 psi concrete. A mat of rebar is used for each one. The engineered designs are followed to provide the strength needed for them to last.
After the installation of the seawall slabs, the cap and tiebacks are quite important. The cap can vary in size. The cap ties the slabs together and levels the seawall. The tie backs keep the wall from leaning out towards the water. All of the steel in the cap is protected from rusting by epoxy coating.
Vinyl Seawall Sheets
Vinyl seawalls are used for areas where access is very tight or concrete is not an option. Cap can be aluminum, wood, or concrete. Steel sheet piling are used in areas where there is a large amount of the sheet height exposed or when certain sub soils require them.
Wooden walls are used for fresh water or when a certain look is required.
There are three types of rip-rap seawalls
The most common is the rip-rap on a man made canal. This should be done in a two to one slope. A toe should be dug into the canal one to two foot below the mean low tide. Filter cloth should be placed in the toe and brought up in the top of the filter cloth. When the cloth is brought up to the top of the wall it will be buried or placed into a 6 inch thick by 18 inch wide re-enforced concrete cap. This cloth will let the water in and out but will prevent soil errosion.
If a rock revetment is needed on open water, larger rock should be used. The filter cloth material should be placed on the ground with a toe dug. The rock should be heavy (1500 lbs to 4,000 lbs) depending on how much wave energy is to be controlled.
If a vertical wall is failing we recommend the following:
To stop this failure and to fix the wall, rip-rap may be placed in front of the existing seawall. Filter cloth should be placed on the wall below the cap, down to the ground, and out from the wall 6 to 8 feet. Rock should then be placed on a two to one slope from the canal back. This will take the failing wall and turn it into a retaining wall, which should give it many more years of usefullness.