A Hassan, Ahmad Ali creator Apichart Anukularmphai Chairperson Olesen, Svend Elsnab Examination Committee Gupta, Ashim Das Examination Committee The Royal Belgian Government Scholarship Donor text series technical report th Bangkok Asian Institute of Technology 1981 continuing eng 51 p. A field experiment was conducted to evaluate the design parameters of a mole drainage system with application to Bangkok clay where clay content was found to be 48%. Mole drains were drawn at 3 different depths of 3 different spacings i.e. 2, 3 and 4 m spacing mole drains at 40, 50 and 60 cm depths, having a 7.62 cm diameter torpedo. For each depth and spacing four mole drains were drawn per plot. The ground surface slope was 1%. There were totally five experimental plots of different combinations of mole drains. The force required to draw the mole plow at three different depths was found to be greater than 3 tonnes. Mole drainage behaviour was evaluated in terms of the basic infiltration rate and the outflow characteristics. It was found that mole drains constructed at 50 cm depth of 3 m spacing were more stable and more effective in terms of extent of fissures and cracks and outflow behaviour. A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1981 Drainage Thailand Bangkok Clay Moisture Thailand Bangkok Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B21521 http://203.159.5.9/ait-thesis/detail.php?q=B21521 110908 20260818113705.0