When planning seawall construction, many factors come into play, including the cost, materials, and design. These factors will all influence the end cost of the project. The cost of a seawall also depends on the location and depth of the waterway in which it will be constructed.
Engineering and permitting services can cost anywhere from $2,000 to $5,000 per job. The height of the seawall will also influence its cost, as it will require more materials and time to construct it than a lower-altitude sea wall.
The type and cost of seawall construction depends on several factors. The size, materials, and proximity of the jobsite all affect the cost. Future erosion rates and wave loads also factor in. Some seawalls include facilities such as walkways or steps. These costs can be estimated through the estimate process. Contractors can help you make the best decision based on the type of seawall you want. Below are a few of the factors that affect the cost of seawall construction.
A seawall is a large investment. On average, it costs anywhere from $150 to $800 per linear foot. However, the price varies widely based on the type of materials, the length, and the difficulty of the project.
While there are many options for materials, steel is perhaps the most popular choice for seawall construction. While steel is costly initially, it is one of the strongest materials. It can be installed in just about any substrate and there is no limit to its height. It also requires little maintenance.
However, steel needs to be re-coated periodically to prevent rust, so proper care can significantly prolong its life. Vinyl and plastic are other alternatives, and they have different aesthetic benefits. However, neither material is as strong as concrete or steel, nor neither are suitable for all soil compositions.
Wooden seawalls can be a great way to protect waterfront properties and enhance their aesthetic appeal. Wooden seawalls can also protect your property against marine organisms, but wood is prone to decay and rot and needs to be treated properly. The size of your seawall will help you determine which material is most suitable for your project. Wood is also an inexpensive option for freshwater retaining walls, but is less durable in salt water.
In coastal areas, design of seawall construction is essential to minimize erosion and protect properties. A seawall that is constructed without proper toe protection can collapse due to overtopping. This type of erosion usually occurs when an individual high wave hits the seawall.
Overtopping water can be particularly damaging to low structures, as it saturates the soil and increases pressures from landward. In extreme cases, the foot of the structure may collapse. The slope of the seawall should be at least 1:3 or higher.
Although cost is a major barrier to seawall construction, it must be taken into account. Seawalls require extensive environmental data for effective design. Unfortunately, in developing countries, such data is often unavailable or very expensive to …