Percolation of surface water with concrete filter drainage pipes

摘要

For more than 50 years concrete filter drainage pipes have been successfully coping with difficult drainage problems. Dranit concrete filter drainage pipes are particularly well-suited for drain lining. Made of regional materials, they are durable, environmentally-friendly and can be recycled. They meet the requirements of the building industry to lower energy consumption and to protect the environment (Horn 1991).