Concrete Collar Technique
One of our favorite methods of pond construction is the concrete collar technique. The benefits of this technique are:
• Ideal for soft soil areas, very deep ponds, or soils with a high clay content that tend to shift (Houston)
• Leveling is accomplished before rock work is installed, eliminates need to constantly check levels as you are laying rock.
• Prevents you from digging the pond larger than planned.
• Prevents cave-ins along the sides
• Safe firm edges
• Allows you to raise the pond above the existing grade thus preventing runoff from heavy rains from muddying your pond.
Although a concrete collar is not required for pond construction, it is an example of how a little extra effort pays off. The collar gives you a nice firm platform on which to lay in the stonework. Not one visitor to your pond will stand back and admire your pond; right on the edge is where they will be. A concrete collar guarantees a stable footing.
For more detailed information including diagrams and illustrations, click the link below to download the full PDF.