DMRB Volume 4 Section 2 Part 4 (HA 217/08) Geotechnics and drainage. Drainage. Alternative filter media and surface stabilisation techniques for combined surface and sub-surface drains
Publication Year
2008
Document Status
Withdrawn
Abstract
Provides guidance for design, construction and maintenance of combined surface and sub-surface drains, also known as French Drains, used in road drainage systems. Covers the usage of topping materials as a safety feature, alternative filler materials and maintenance and rehabilitation of the drain.
Document History
Superseded by: HD 217/18 Alternative filter media and surface stabilisation techniques for combined surface and sub-surface drains DMRB 4.2.4. (HE, 2018). DMRB 4.2.4. Design manual for roads and bridges (DMRB).
Publisher Information
Highways Agency
The Highways Agency is now known as Highways England. The new government company is in charge of operating England's motorways and major A roads, including modernising and maintaining the highways. Their publications include the Design Manual for Roads and Bridges, the Manual of Contract Documents for Road Works and Interim Advice Notes.
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