Life Cycle Cost Analysis of Normal Building and Green Building

Abstract

Life cycle cost analysis of any building is defined as the total costs involved in entire life span of a building. In this project we compare the life cycle cost analysis of normal residential building with life cycle cost analysis of green building. Life cycle cost involves acquisition cost, construction cost, operational and maintenance cost, demolition and disposal cost and salvage value of building after the service life of 30 years. In this project we have done life cycle cost analysis of SJVNL office Shanahan Shimla H.P. which is green certified building which gets 70-80 points as per GRIHA rating of green building. This green building is rated as three star green building as per GRIHA rating. After analyzing this we made a model of normal residential building having same area as green building. Then life cycle cost analysis of normal building has been calculated. In this project we used REVIT software for the estimation of constructional cost of a building. Then we compared all costs analyzed from the life cycle cost analysis of both the buildings, from this we found that the initial cost of green building is more than the cost of normal building and initial costs involves acquisition cost and development cost. This is because of green techniques used at the time of construction. But operational and maintenance cost of green building is less than the cost of normal residential building this is because of techniques used in the green building are energy efficient that saves annual bill of electricity, water charges and repair charges of building. Major and minor repairs of green building are also less as compared to the repair cost of normal residential building. Salvage value of the green building is large as compared to the normal building after its service life of 30 years. This is because the material and techniques used in green building have large resale value. So, the actual life cycle cost of both the buildings can be determined by subtracting total salvage value of building from the total cost (acquisition cost, construction cost, operational and maintenance cost and demolition and disposal cost) of building.