The present study is aimed to compare the behaviour of black cotton soil reinforced with sisal and coconut fiber
also referred as coir. The soil used is black cotton soil collected from Arera Colony Area of Bhopal District (M.P). Sisal
fiber and coconut fiber are mixed randomly with soil in varying percentages (2%, 4% and 6%) respectively by dry weight of
soil and compacted to maximum dry density at optimum moisture content.