DIN 1185 (December 1973)
"Drainage; Control of Sub-Surface Water Management by Drainage with Pipes, Open-Ditch Drainage and Amelioration." ( „Dränung – Regelung des Bodenwasserhaushaltes durch Rohrdränung, Rohrlose-Dränung und Unterbodenmelioration")
DIN 1185 comprises five parts and applies to procedures controlling sub-surface water management of agricultural surfaces by drainage.
DIN 1187 (November 1982)
"Unplasticised poly(vinyl chloride) (PVC-U) drainpipes; dimensions, requirements, testing." („Rohre aus weichmacherfreiem Polyvinylchlorid (PVC-hart); Maße, Anforderungen, Prüfungen")
This standard applies to corrugated (flexible) and smooth (straight length) drainage pipes made of unplasticised polyvinylchloride (PVC-U) which are predominantly used for controlling sub-surface water management according to DIN 1185.
"Surface Drainage Instructions" by Prof. Dr. Rudolf Eggelsmann
The book, published in 1973, is considered a milestone in technical literature on drainage technology. Mr Eggelsmann manages to consider virtually all of the German and also some of the foreign literature on improving sub-surface water management by amelioration. He provides the drainage expert with an overview of all questions regarding drainage for the first time. In practice, the "sub-surface drainage instructions" include all necessary working bases for planning, design, construction and operation of drainage systems.