According to Mark Roemer Oakland, it is important to consider a lot of important factors in order to determine the cost of building a seawall. The cost of building a seawall can vary highly but you should never compromise on the safety standards. It is also necessary to calculate the true cost vs up-front cost in order to understand why it is a good investment.
Here are the various factors that determine the cost of building a seawall:
- Materials – The materials required for building a seawall are one of the major factors that influence the total cost of the project. The material selection is based on the strength of the seawall which depends on its purpose. For instance, an ocean-facing wall requires the use of composite sheet piling in order to make the wall higher and make it strong. In contrast, vinyl sheet piling is enough to create a golf course lake wall that doesn’t require to be that strong and hence can be built cheaper.
- Length and height – The length and height of the seawall impact the total cost of the seawall since it requires extra materials and is associated with additional installation costs and higher transportation costs. A longer seawall demands more construction labor and work hours which increases the total cost.
And, if the seawall needs to be built in deep water or an area that has a high velocity, it needs to be built deep even if the top portion may not look that high.
- Soil conditions – The condition of the soil where the seawall needs to be built also affects whether you can get the job done for cheap or need to shell out extra money. For instance, it requires more resources, time, and manpower to drive seawalls and associated sunken tie rods into hard clay and rock beds compared to sandy soil. In the case of the former, the project will require additional demolition, drilling work, and debris work.
- Access – The cost of building a seawall would be lower if the marine contractors have sufficient privileges to access the construction site. However, if they have to hop through legal or physical barriers, the extra workaround can increase the cost of the project. These also include governmental regulations, bad weather, hazardous materials, and more.
- Project complexity – The complexity of a seawall project depends on many factors such as the range of requirements and custom needs. As a result, the more complex a project, the higher the cost would be. These include multi-phase civil development projects that require years to complete.
Mark Roemer Oakland suggests you also consider the timeline of the seawall project since it can also affect the overall cost. When you have to get the job done on a tight schedule, it can increase the overall cost since extra manpower and planning are needed. Plus, there is even less room for mistakes since any delay can risk the completion within the deadline.