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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    Numerical formulation and parametric investigations of the square and rectangular CFST columns subjected to axial loading
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-07) Varsha; Katariya, S.K.
    Nowadays, distinctive compound material has been broadly used in concrete column so that better proficiency of the column system is achieved. Among all of them, concrete-filled steel tubular column system (CFST) proved to be the most effective compound column from which maximum building structures are constructed, particularly the high-rise buildings, since it get the benefits of both concrete infill and steel tube resulting in good performance, reduced area and design utility. In this study, equations are proposed to compute the load carrying capacity of square and rectangular CFST column and to predict the post-peak behaviour. In the formulation of the equation for concrete stress two parameters are considered: force ratio (Fr) and B/D ratio. Here, medium strength of concrete infill has been considered and the force ratio remains within the range of 0.23 to 0.81. The curves generated from the proposed equations have been verified using the experimental curves taken from the papers of previous researchers. The parametric investigations are also carried out to study the influence of the various factors on the behaviour of CFST columns, namely (i) compressive strength of the concrete, (ii) yield strength of the steel tube and (iii) total cross-sectional size. In this study, a comparison is also done between the experimental ultimate load value and the ultimate load value calculated using the proposed equations for different square and rectangular CFST specimens.
  • ThesisItemOpen Access
    Spatial and temporal analysis of water quality of Ganges system upto Varanasi by using GIS and SPSS tool
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Khan, Shizan; Shiva Prasad, H.J.
    All living organisms are dependent upon pure oxygen, water, soil etc. in one form or other to maintain metabolic processes that produce energy for growth and reproduction. Due to the rapid increase in urbanization and industries, the air, water, soil and the nature are being polluted due to discharging their wastes into water bodies and contaminate them. Thus present study focus to assess the surface water quality of Ganges system upto Varanasi including area i.e. Uttarkashi, Rudraprayag, Haridwar, Moradabad, Auraiya, Kanpur, Raebareli, and Varanasi by integrating Water Quality Index (WQI) with Geographic Information System (GIS). The level of concentration of various physico-chemical parameters determines the quality of surface water. Therefore the study was undertaken with the aim to assess the surface water quality by analyzing the seasonal variations in physico-chemical water quality parameters. To create the spatial distribution maps of Water Quality Index value Arc GIS is used. The resultant graphs and tables revealed that Moradabad, Auraiya and Kanpur are the most polluted sites for all the three seasons with water quality index value higher than desirable limit for drinking. Overall it is found that quality of surface water of Ganges system since last decade is depleting at fast rate from upstream to downstream.
  • ThesisItemOpen Access
    Investigation and remedial measures for few landslides in Kumaun region, Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Malviya, Piyush Kumar; Ajit Kumar
    Improvement in soil strength and slope stability has always been an area of concern to geotechnical engineers. In hilly terrain of India (Uttarakhand, Jammu & Kashmir, Himachal Pradesh and north eastern part of country) landslides (mudflow, debris flows, rock fall) has become serious concern now days. It occurs often and cause severe human loss, damage to infrastructure like roads, electric and communication lines, serious damages to flora and fauna, overall a huge economical loss of nation and hampering development in hilly terrain. Hence arises need to analyses such slopes in hilly terrain and suggest quick, economical and engineered remedial measure for protection of slopes in such terrain. Now day’s numerical simulation has made the things easier same is the case with numerical modelling of slope stability analysis. Hence study in this thesis covers numerical analysis of few natural slopes in Kumaun region which underwent major failure and certain engineered and economical remedial measure has been suggested to overcome future failure of slope and sinking zone in such areas. Not only this few previous case study regarding soil slope failure in India has been studied. Study is being carried out in three phases, firstly soil samples is being carried out from sites and reason for slope failure is determined (Geological and Meteorological), secondly geotechnical properties of soil samples is being determined in laboratory, lastly analysis is being done conventionally and numerically, hence economical and engineered remedial measures has been suggested to prevent future slope failure in these region.
  • ThesisItemOpen Access
    Study on minimum reinforcement of RC flexural members
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Sahal, Nisha; Verma, V.K.
    Limit analysis of reinforced concrete (RC) beams usually disregards the non linear contribution of concrete in tension in evaluation of load carrying capacity. This assumption does not lead to safe design condition e.g in case of flexural members that for architectural or other reasons, have a large cross section than that required for strength. With minimum reinforcement, the tensile concrete strength makes a substantial contribution to the definition of peak cracking load, which may turn out to be higher than the ultimate load. For this reason, Codes of other countries impose limitations on minimum steel in order to prevent sudden failure. Most of them consider two parameter concrete grade and steel yield strength. But minimum limit on longitudinal reinforcement given in the Indian code depend only on steel strength and independent of concrete strength. IS Code provided minimum steel for RC flexural members is based on tests conducted on normal strength concrete, and hence not applicable to high strength concrete beams. Hence comparing the provisions of other national codes, modifications to this limit is suggested. This modified expression may be more justified to prevent sudden failure of flexural member. To study behaviour of RC flexural members, some beams have been modelled and analysis is carried out according to IS 456-2000 code, using ANSYS 12 software. Moment of resistance, Strain, Stress and mid span deflection values for beams are calculated and compared. Conclusion is drawn from this comparison that for high strength concrete it may be prudent to include the concrete strength also in the equation of such limit.
  • ThesisItemOpen Access
    Numerical modelling for predicting the postpeak behaviour of circular CFST stub columns under axial loading
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-07) Kashyap, Gaurav; Katariya, S.K.
    In today’s world where the land cost is very high any saving in terms of floor area will be considered advantageous in terms of construction cost as well as in terms of more space. Generally, columns in multi-storeyed buildings, occupy large area of the floor resulting in more cost and less carpet area. Keeping this in mind, new innovative composite columns were designed which can carry more load and occupy less floor area. Concrete Filled Steel Tubular columns represent such a class of structural components, which can utilize the most favourable properties of both, steel and concrete. The compressive strength per unit cost of this structure is higher than that of traditional columns reinforced with steel. In this study, equations are proposed to compute the load carrying capacity of CFST circular stub column and to predict the post-peak behavior. The graphs generated from the proposed equations were validated using the experimental data taken from the papers of previous researchers. A parametric study was also performed to study the influence of the four factors on the behaviour of CFST circular stub column, namely (i) Diameter to thickness ratio, (ii) Grade of steel, (iii) Grade of concrete and (iv) steel contribution ratio (δs).EUROCODE 4 is the most recently completed international standard in composite construction. In this study, a comparison was also presented between the experimental peak values of the specimens taken under this study, design load as per EC 4 recommendations and predicted load carrying capacity by modelled equations.
  • ThesisItemOpen Access
    Numerical modelling for square CFST column filled with normal strength concrete under axial compression
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Rautela, Amit; Katariya, S.K.
    Concrete-filled steel tube (CFST) is the composite structural element which consists of a steel tube in-filled with concrete. The concrete core helps in preventing or delaying the local buckling of steel tube and at the same time steel tube provides confinement to the concrete core for better seismic resistance. CFST structures are widely used in high rise buildings, towers and bridges due to its various advantages like excellent seismic behaviour, strength, ductility, energy absorption capacity, fire resistivity and load bearing capacity. The past studies suggests that the performance of a circular CFST is better than the square or rectangular CFST. However, square and rectangular CFST columns are still increasingly used in engineering practice, for reasons of easy beam-to-column connection, high moment capacities, and aesthetic consideration. This study mainly presents the numerical modelling of square CFST columns under axial loading. To fulfil this, an equation is developed with the technique of regression analysis and then axial load vs strain curve is plotted using the equation to calculate the ultimate load-bearing capacity of the square CFST column. Further, this axial load vs strain curve is compared and validated with the experimental results taken from the different published research papers. An extensive parametric study is also done to investigate the effect of a change in different parameters like width to thickness ratio (B/t), compressive strength of concrete (fck), yield strength of Steel (fsy) and cross sectional size (B x B) on the ultimate load carrying capacity of the square CFST columns.
  • ThesisItemOpen Access
    Development of dynamic programming model for optimal operation of a reservoir to generate hydropower
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-05) Shah, Stuti; Mahar, P.S.
    With the rapid rate of urbanization and industrialization, it has become more important than ever in history to effectively manage the precious and scare resource, water. The optimal operation of reservoir is mandatory to manage water according to various demands. Reservoir operation implies the derivation of optimal releases with time period. In this study, a mathematical model has been developed using dynamic programming and a computer program is written for the same to determine the optimal release sequence and obtain the yearly net benefits. Equations representing the continuity, release and storage have been imposed as constraints in the model. The solution of the model yields the monthly optimal reservoir releases and yearly net benefit. The applicability of the developed dynamic programming model has been illustrated for the Tehri dam reservoir in Uttarakhand, India. The effect of varying minimum release values, turbine efficiency and selling prices of hydroelectricity has been investigated on the optimal releases and net benefits. The optimal reservoir releases and net benefits are obtained as the desired outputs for the time period of study. From the generated results, it is inferred that increased net benefits are obtained for increase in both the turbine efficiency as well the selling price.
  • ThesisItemOpen Access
    Spatial analysis and thematic mapping of geotechnical properties of Udham Singh Nagar district soil using Geographical Information System (GIS)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Khatri, Shubham; Sanjeev Suman
    In the design of structures like buildings, bridges, dams etc., the subsurface soil exploration and testing become an essential part of the design so as to decide the suitability of soil strata for the particular structure. The Geotechnical field and lab testing are usually done to find the parameters of soil governing its strength’s behavior. Prior to design and constructions often geotechnical lab testing suggests that a site’s soil should be stabilized or not to improve its shear strength, stiffness, and permeability etc. At the time of planning and estimate of a structure, soil properties are required for estimating the structural quantities to be constructed upon the soil subgrade under consideration. Due to the limited availability of time and absence of data, there occur large errors in estimation. Therefore there is a vital need for some sub-surface soil properties mapping so as to come up and provide a cheap and reliable source of Geotechnical data to the engineers in the form of digital soil maps. In this regard, Digital Soil mapping using GIS can be a used as a reliable as well as an effective source of mapping soil properties. Maps of Geotechnical properties like Specific Gravity, Maximum Dry Density, and Optimum Moisture Content of soil of an area are produced by using Spatial Interpolation methods for their ready use in Civil Engineering constructions using Geographical Information System (GIS). GIS provides an easy to use atmosphere for geospatial analysis of different soil properties. The main aim of the study is to predict the spatial variability of the geotechnical properties of soil using well known spatial interpolation methods like Inverse Distance Weighted (IDW). The methodology of the study includes the development and digitization of the study area using GIS. The map of study area of Udham Singh Nagar district of Uttarakhand state was downloaded from Survey of India Website, Google map Customizer, and India’s ISRO Geoportal Bhuvan. The base map was Georeferenced and digitized up to tehsils and village level and then divided into rectangular grids having known latitudes and longitudes of soil sampling points. After built up of a digitized base map of the study area and digitized soil sampling points, next step was to collect soil samples for testing and determining their geotechnical properties. The handheld Garmin’s Global Positioning System (GPS) Receiver was used to reach the known latitudes and longitudes of known sampling points of grid and soil samples were collected. The data was then provided to ArcMap Database to prepare thematic soil maps. IDW method of spatial interpolation was applied for preparation of thematic maps of soil properties. The soil of the area was also described and distinguished using various limiting criteria’s of soil properties governing soil strength. The risk areas were also identified using the same criteria’s of soil properties. The accuracies of predicted soil properties were determined using the Cross-Validation method which provided Root Mean Square Prediction Error (RMSPE). Cross-validation helped find the accuracy of predictions using the same dataset, thus helped in avoiding more sample collection and testing for validation. The methodology presented in this study can be used to create thematic maps of soil properties at a much larger scale. Different methods of spatial Interpolation like IDW, Kriging, and Splines etc. can be used to predict soil properties at other locations and predicted surfaces from different methods can be compared for more accurate prediction. The thematic maps prepared can, therefore, provide a means of a reliable source of information for engineers at the time of planning and development of detailed project reports when data is not easily available and thus the system can act as a source of guidance for future steps.
  • ThesisItemOpen Access
    Experimental study of light transmitting concrete and bricks
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-07) Dangwal, Shubham; Verma, V.K.
    Recently, high rise buildings and skyscrapers have replaced small buildings thus causing the problem of deriving natural lights in the buildings. As an alternate, artificial light sources are used which not only increase the heat level in the buildings but also increases the electricity budget as lighting covers major part therefore light transmitting concrete is need of the hour. Light transmitting concrete allows the natural sunlight to pass through it during the broad day light hours to enlighten every corner of the building thus reducing power consumption. It is a smart concrete which transmits light through it and makes easier for any building to achieve high LEED rating devised by United States Green Building Council (USGBC). In this research, two grades of concrete i.e. M20 and M25 and two diameter of holes i.e. 5mm and 10mm to insert fibers successfully are adopted. Plastic optical fibers are included in concrete cubes in eight different percentage i.e. 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5% and 4%. A total of 96 concrete cubes of size 100mm×100mm×100mm, 8 set of cubes (each set contain 3 cubes) for each grade and for each diameter of holes were casted respectively. The specimens were tested after 28 days of curing for Compressive Strength test and Light transmittance test. Plastic optical fibers were also inserted in the fly ash bricks in four different percentage i.e. 0.5%, 1%, 1.5% and 2% having 10mm diameter holes drilled with the help of masonry drill bit and Compression strength test and light transmittance were conducted over the brick samples. From this study, it was found that the compressive strength of light transmitting concrete with 10mm diameter holes for both the grades of concrete has the continuous decrease in strength pattern. The compressive strength of concrete samples having 5mm diameter holes shows no loss or very less variation in strength as compared to conventional concrete. The result shows that light transmittance ratio up to 5.30% can be achieved by using 4% plastic optical fiber. Fly ash bricks having fibers inserted in them shows continuous decrease in strength when compared with normal fly ash bricks and has light transmission ratio up to 5.60% by using 2% plastic optical fiber.