There are different types of coastal protection. This sample calculation is for a protection system for buildings and structures at and on the beach with geotextile sand containers (GSC) Secutex® Soft Rock.
The scour protection system for hard constructions (walls, buildings, etc.) protects the foundation with sand bags and sand containers against erosion in case of high water levels and waves.
In order to guarantee a long-term solution (up to more than 25 years), the sand on the water side of the building is removed and a barrier of sand containers is installed and covered with a protective layer of sand.
Erosion protection system of hard structures (exemplarily)
The following factors are used as examples for the calculation of the time required:
Required construction time – Erosion protection system of hard structures with geotextile sand filled containers (geometry: height: 1.5 m, length: 50 m).
CONSTRUCTION SITE FACILTIY – 1 day
Barricading beach areas, setting up material stores, provide access to the construction side, etc.
CLEANING – 2 days
Removal of roots, old structures, etc. Usually you need an excavator and a truck as well as approx. two construction workers.
EXCAVATION and PLANUM – 2 days
In order to install the sandbags and sand containers, the construction site must be prepared first. Part of the beach must be excavated and the planum prepared. As equipment the construction workers will need an excavator and a truck.
FILLING and INSTALLATION – 5 days
To fill the 460 sand containers and install them correctly in the beach, if you fill and install about 100 sand containers a day.
SAND PROTECTION and LEVEL THE SURFACE – 1.5 days
After the installation of the sand containers, the structure has to be covered with sand. For the exemplarily 50m wide geotextile sand container structure you will need the support of two construction workers, an excavator and a truck with driver.
CLEANING and REMOVAL OF THE CONSTRUCTION SITE – 1 day
Finally, the construction site must also be cleaned and removed.
TOTAL CONSTRUCTION TIME – 12.5 days