60 Rohit Mishra, Dr Sunil Kumar International Journal of Engineering Technology Science and Research IJETSR www.ijetsr.com ISSN 2394 – 3386 Volume 6, Issue 7 July 2019 To Calculate the Optimum area of Thrust Block for Blank End with Closable Valves Rohit Mishra 1 Dr Sunil Kumar 2 (Department of civil engineering) (Department of civil engineering) HBTU Kanpur, India HBTU Kanpur, India Abstract-The present work is to find the optimum area of thrust block for blank end with closable valve system. In this we considered particularly six types of poorly graded soil whose bearing capacity is known. The value of Pressure Head from Pipauri village which is situated in Bidhnoo Block, Kanpur District. The reason for taking the safety factor is to consider the surge condition in which there is sudden rise of pressure due to some fault in laid pipeline system. The method used for finding out the optimum area of Thrust Block is simple which considers diameter of pipe as a variable and area is calculated for different diameters. . From these values the design is achieved by calculating the optimum Area from the design equation and then breaking the area into corresponding bearing width and height (b and h). The width and height can be compared by keeping a fix ratio between them. Keywords- Thrust block, optimum area, Kanpur district, surge, Width, Height 1-Introduction Pipauri village is situated in Bidhnoo block, Kanpur Nagar.The Pressure Head is taken from Pipauri Gram Panchayat water supply scheme provided by Kanpur Jal Nigam where the total head, head loss where given and the pressure head was calculated using Bernoulli’s equation .In this paper we mainly considered six Types of poorly graded soil whose bearing Capacity is known .The method used is simple that is calculating the thrust block area using different parameter such as pressure, bearing capacity, diameter of pipe, and then breaking the obtained area into width and height which has a constant ratio. 2-Importance of Thrust Block Considering The present situation of clean water and water crisis the sustainable use of water or wise use of water is important because the loss of water may lead to scarcity, and the failure or movement of any pipeline system carrying treated water or raw water will increase the cost of treatment in short term but scarcity of water in long term.So to prevent this type of failure or movement the Thrust block is necessary. 3-Materials Concrete is a construction material which is manufactured by the mixture of materials which are called as aggregates, cement and water. By controlling the proportion of these three components the minimum grade is prepared .M20 can be considered as a minimum grade of concrete considering the safety point of view. 4-Steel reinforcement As the concrete is strong in compression and weak in tension, so concrete was reinforced with the HYSD bars to take up the tension and to prevent concrete from the shrinkage and creep which will occur due to the