The current study presents numerical analysis of reinforced concrete deep beams to evaluate the shear capacity with openings, for different tension longitudinal reinforcement ratios, shear span-to-depth ratio (a/d) and web reinforcement, keeping shape of the openings, location of openings and grade of concrete as constants. Several research efforts have been made on RC deep beams with openings with a maximum opening area of 0.15aD, which is the limit byKong et al. (1970). The response of RC deep beams with openings greater than 0.15aD, considered as large opening,has been studied. To validate the numerical results, a reference beam without shear opening (solid RC deep beam) has been modeled and validated with the ultimate load. Non-Linear Finite Element (NLFE) model has been developed with Concrete Damage Plasticity (CDP) parameters using ABAQUS program. 60 numerical problems with five different opening ratios, twoa/d ratios, three longitudinal reinforcement percentages and two web reinforcement ratioshave been selected.It has been found that as the opening ratio increases in excess of 0.15aD, increase in the percentage of longitudinal reinforcement and web reinforcement seems to be insignificant. For opening area ratio greater than 0.24aD, as the a/d ratio increases the shear strength has been found to be considerably high.The numerical results are compared with few existing shear strength equations analyzed. The equations considered in this study are highly conservative with large openings and larger a/d ratios. Also, most of the shear equations predict the shear strength reasonably wellwith smaller a/d ratio rather than larger a/d ratios. Tan et al. (2003) equation seems to bepredicting well with different combinations of a/d ratio and opening ratios.