Carbon is the most essential element of the land crown. Due to fluctuation of water table the carbon content of soil would change. This will result in leaching of carbon from the structure for compensation and this might damage the structure. The most important problem associated with most of the structures made up of steel is corrosion. Generally medium of cement is alkaline in nature. this forms a passive oxide layer which protects the steel form corrosion. Carbon leaching can destroy the oxide layer and can make steel prone to corrosion. Due to diffusion of the Due to diffusion of the CO2 gas in the concrete the carbonation of concrete started due to which the corrosion protective layer of the reinforcement is degraded. so that corrosion starts in the concrete which have negative impact on the strength of building. Total uptake of CO2 from various parts of the building is calculated in this project. the process of change of the PH value of concrete is also calculated. The total uptake of the CO2 of a industrial building new the river ganga is calculated through same theoretical as well as practical methods.