Research 2 Baruah and Talukdar (2007) investigated the static properties of plain concrete (PC) and fibre reinforced concrete (FRC) with different fibre volume fractions ranging from 0.5% to 2%. Fibres used were steel, artificial and natural fibres (jute and coir fibres only). Here, discussion is limited only to PC and the coir fibres reinforced concrete (CFRC). The mix design (cement: sand: aggregates) for plain concrete was 1: 1.67: 3.64 with water cement ratio of 0.535. Per cubic meter of concrete mix was cement = 350 kg, fine aggregates = 568.40 kg, coarse aggregate = 1239.40 kg and water = 182 kg. The maximum size of aggregates was 20mm. Coir fibres having length of 4cm and diameter of 0.4mm with volume fraction of 0.5, 1, 1.5 and 2% were added to prepare CFRC. The sizes of specimens were (1) 150 mm diameter and 300mm height for cylinders (2) 150 mm width, 150 mm depth and 700 mm length for beams, and (3) 150mm cubes having a cut of 90 mm X 60 mm in cross-section and 150 mm high for L-shaped shear test specimens. All specimens were cured for 28 days.