Open Access Journal

ISSN : 2394-2320 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

IInternational Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

ISSN : 2456-1290 (Online)


Author : Himantha Raju L 1 Dhananjay A P 2 Revathi M R 3 M Fathima Sameera 4 Mr. Shobhan Majumder 5

Date of Publication :30th November 2021

Abstract: At the rate in which the India population is increasing, it is said that India will surely replace China from its number 1 position of most densely populated country of the world after 20-30 years. The Urban water demand 3.3 billion in 2007 to 6.4 billion in 2050 (United Nations, 2008). These will lead to high rate of consumption of most valuable natural resource „Water‟ resulting in augmentation of pressures on the permitted freshwater resources. In order to conserve and meet our daily demand of water requirement, we need to think for alternative cost effective and relatively easier technological methods of conserving water. Rain water harvesting is one of the best methods fulfilling those requirements. The technical aspects of this study are rainwater harvesting collected from rooftop which is considered to be catchment areas at Bearys Institute of Technology Campus. In this study Two Areas are assumed to be consisting of a single residential building and multi-storey (Hostel) building, its serves about 4 and 240 inhabitants. The roof area of the buildings are 81.316 m2 and 772.25 m2. We selected Concrete Bed Roof and Galvanized steel Roof as roof material. In the year 2018 the average Monthly rainfall of 316.391mm respectively, The rainfall data are being taken from the India Meteorological Department, Mangalore. We design and Proposed modular Rain Water Harvesting System for Beary’s Institute of Technology. After effectively implementation of proposed system has been tested and analyzed the design efficiency for Economic savings analysis. In all calculations for Runoff estimation, runoff coefficient is used to account for losses due to spillage, leakage, infiltrations catchment surface wetting and evaporation. Water collection efficiency is purely depended on roof material and found Galvanized steel Roof is best roof material for rainwater harvesting Construction cost of Proposed RWH modular system was estimated Rs.5710, Its indicate Low-cost roof top rain water harvesting. The highest Water Collection Efficiency obtained from Galvanized steel Roof 98.5 %. In the both roof top the highest Overflow found 46.26 % and 61.68%, was found in the 2KL and 10KL Tank size in the Area-1 and Area-2. In the Timebased reliability in Area-1 from the Concrete Bed Roof and Galvanized steel Roof was achieved 33.70 % and 36.71%, from the Area-2 the timebased reliability was achieved 7.12 % and 8.49 %.The benefit-cost ratio (BCR) for the 1% and 9% discount the benefit cost ratio was 3.07, 4.15 and 2.77, 3.72 from the Concrete Bed Roof and Galvanized Steel Roof for Area-1.The highest water saving was found from the Galvanized Steel Roof for the both areas around 81 & 2733 m3/ year

Reference :

    1. Tomaz, P., Civil, E., Etelvina, E., Aproveitamento De água De Chuva De Telhados Em áreas Urbanas Para Fins nã O Potáveis. 2007, pp. 1–24
    2. Brown, LR., China‟s shrinking grain harvest: how its growing grain imports will affect world food prices, Earth Policy Institute, 2004
    3. Li,F., Cook,S., Geballe, GT., Burch,WR., Rainwater harvesting agriculture: an integrated system for water management on rainfed land in China‟s semiarid areas. Ambio, 2000, vol 29.
    4.  Martinson, DB., Thomas, T., Quantifying the first-flush phenomenon, International Rainwater Catchment Systems Association, 2005, pp.1–7.
    5. Zinder, B., Schuman, T., Waldvogel, A., Aerosol and hydrometer concentration and their chemical composition during winter precipitation along a mountain slope II. enhancement of below-cloud scavenging in a stably stratified atmosphere, Environ, 1998, Vol 22(12), pp 2741–2750.
    6.  Handia, L., Tembo, J.M., Mwiindwa, C., Potential of Rainwater Harvesting in Urban Zambia, Physics and Chemistry of the Earth, 2003, vol 28, 893-896.
    7. Mahadeva, M., Reforms in Housing Sector in India: Impact on Housing, Development and Housing Amenities. Habitat International, 2006, vol 30, pp 412-433.
    8. Gwenzi, W., Dunjana, N., Pisa, C., Tauro, T., Nyamadzawo, G., Sustainability of Water Quality and Ecology Water Quality and Public Health Risks Associated with Roof Rainwater Harvesting Systems for Potable Supply: Review and Perspectives, Sustainability of Water Quality and Ecology, 2015, vol 6, pp 107-118.
    9. Grey, D., Sadoff, C.W., Sink or swim? Water security for growth and development. Water Policy, 2007, vol 9(6), pp 545-571.
    10. Spinks, A.T., Coombes, P., Dunstan, H.H., Kuczera, G., Water Quality Treatment Processes in Domestic Rainwater Harvesting Systems, Hydrology and Water Resources Symposium, 2003, vol- 2, pp 227-234.
    11. Gleick, P.H., Basic water requirements for human activities: Meeting basic needs, Water Int, 1996, vol 21, pp 83–92.
    12. Wheida, E., Verhoeven, R., An alternative solution of the water shortage problem in Libya, Water Resource Management, 2007, vol 21, pp 961–982.
    13. Fang, C.L., Bao, C., Huang, J.C., Management implications to water resources constraint force on socio-economic system in rapid urbanization: A case study of the Hexi Corridor, Water Resource. Management, 2007, vol 21, pp 1613–1633.
    14. Giuffria, J,M., Bosch Darrell, J., Taylor Daniel, B., Alamdari, N., Costs of water quality goals under climatechange in urbanizing watersheds, Water Resource Planing Management. 2017, vol 143 (9), pp 0401 7055.
    15. Wright, L., Chinowsky, P., Strzepek, K., Jones, R., Streeter, R., Smith, J., Mayotte, J.-M., Powell, A., Jantarasami, L., Perkins, W., Estimated effects of climate change on flood vulnerability of U.S. bridges, 2012, vol 17 (8), pp 939–95. [
    16. Silva, C.M., Sousa, V., Carvalho, N.V., Evaluation of rainwater harvesting in Portugal: application to single-family residences. Resource Conservation Recycle, 2015, vol 94, pp 21–34.
    17. Dakua, M., Akhter, F., Biswas, P.P., Siddique, M.L.R., Shihab, R.M., Potential of Rainwater Harvesting in Buildings To Reduce Over Extraction of Groundwater in Urban Areas of Bangladesh, 2013, pp. 68–74.
    18. Mun, J.S., Han, M.Y., Design and operational parameters of a rooftop rainwater harvesting system: definition, sensitivity and verification, Journal Environment Management, 2012, vol 93 (1), pp 147–153.
    19. Ward, S., Memon, F.A., Butler, D., Performance of a large building rainwater harvesting system, Water Resoures, 2012, vol 46 (16), pp 5127–5134
    20. Imteaz, M.A., Ahsan, A., Naser, J., Rahman, A., Reliability analysis of rainwater tanks in Melbourne using daily water balance model, Resource Conservation Recycle, 2011, vol 56, pp 80–86
    21. The United Nations World Water Development Report 2015: Water for a Sustainable World. United Nations World Water Assessment Programme, Paris, 2015.
    22. Ghisi, E., Ferreira, D. F., Potential for potable water savings by using rainwater and greywater in a multi-storey residential building in southern Brazil, Building and Environment, (2007), vol 42, pp 2512–2522.
    23. Ghisi, E., Oliveira, S. M., Potential for potable water savings by combining the use of rainwater and greywater in houses in southern Brazil, Building and Environment Building and Environment, 2006, vol 42, 1731–1742.

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