Comparative performance assessment of eco- friendly buildings and conventional buildings of kathmandu valley

Environment needs protection against ill effects of rapid construction. the performance assessment of existing eco- friendly buildings inside Kathmandu Valley by taking both eco- friendly and conventional buildings for case study and by comparing the obtained performance data of both type of buildings. This study is also an initial attempt to find out the new technologies and to observe the building materials that are being used in the existing eco- friendly buildings. Some new techniques and materials were also found to be used during the case study of Hama Steel complex. In unit area, embodied energy produced by Paudel residence was found to be 21.85% more than the embodied energy produced by Mato Ghar. Also, Paudel residence produced 11% of Carbon more than that of Mato Ghar. The calculation of U-Value of surfaces of eco- friendly buildings were found to be noticeably lesser than that of conventional buildings which means eco- friendly buildings have better thermal insulation than conventional ones. Also, 10%-15% additional building costs was found in both eco- friendly buildings whereas the operation and maintenance costs of those buildings were nearly 50% lesser than the conventional buildings. In terms of various parameters, the results show that the performance of existing Eco- friendly buildings of Kathmandu Valley is better in comparison to the conventional buildings. More eco- friendly building materials are introduced in such buildings producing less harm to environment.