Static and dynamic lateral load tests were carried out on the model aluminium single piles embedded in soft clay to investigate the bending behaviour of piles. Piles with different length to diameter ratio were subjected to static lateral load and steady state harmonic vibrations with different magnitudes of load and wide range of frequencies. The load transferred to the pile, pile head displacement and the strain variation along the length of pile were observed and measured using a Data Acquisition System. The displacement amplitude under dynamic load is magnified by about 2 times the static deflection. The maximum dynamic bending moment is magnified by about 3 to 5 times the maximum static bending moment for piles tested. The maximum dynamic bending moment occurs at a depth of about 2 times the depth of occurrence of maximum static bending moment.