A pebble drain is a type of drainage system that is made up of a trench filled with gravel or small stones. The trench is typically located in an area where water tends to collect or pool, and its purpose is to divert that water away from the area and into a nearby drainage or runoff system.
The pebbles in the trench act as a filter, allowing water to seep through while trapping sediment and other debris. This helps to keep the water clean and prevents the build-up of dirt or other materials that could clog the drainage system. Pebble drains are often used in landscaping and gardening, as well as in construction and infrastructure projects.
The trench for pebble drain should be placed at a proper slope which helps in the flow of water in the direction of the drainage system, usually 0.5-1% grade is recommended. Drain pipe is placed inside the trench, if required to increase the capacity of the drainage.
Pebble drains are effective, easy to install and maintain, and can be a cost-effective solution for diverting water away from areas where it could cause damage or flooding.
Image of pebbles drain detail and downloadable (in DWG) link below
Pebbles drain detail drawing – 1
A pebble drain detail drawing is a technical drawing that provides detailed information on the construction and installation of a pebble drain.
The drawing typically includes information on the size and shape of the trench, the materials that should be used, and the slope or grade of the trench.
A pebble drain detail drawing will typically include the following information:
- The location of the trench, including its dimensions and shape.
- The materials that should be used for the trench, including the type and size of the gravel or pebbles.
- The slope or grade of the trench, which should be specified in terms of the percentage of the slope.
- The depth of the trench, which should be deep enough to accommodate the pebbles and the water that is expected to flow through it.
- The location and size of any drain pipes or other drainage systems that will be connected to the pebble drain.
- The type of drainage system that the pebble drain will be connected to, such as a storm sewer or a drainage ditch.
The drawings should also indicate the proper compaction of trench, any filter fabric or geotextile material requirement and the method of backfilling. It should be prepared by a professional engineer or landscape architect and must meet the local building and zoning codes.
It’s important to have a clear and accurate pebble drain detail drawing in order to ensure that the pebble drain is installed correctly and functions properly.
Our tips to help you improve your architectural pebble drain detailing.