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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
    Assessment of water potential underground in Suyal watershed Almora, using analytic hierarchical process and GIS approach
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-04) Joshi, Ritesh; Shiva Prasad, H.J.
    With the increase in water consumption and climatic variation hundreds of spring fed water shed is at a great threat. Due to decline of discharge in conventional water resources crop land has also shrinked which has affected the economy of region to a great extent. Underground water is present in form of porous aquifer and springs in hilly and mountainous regions. Due to lack of maintenance and over exploitation many conventional water sources are at verge of extinction. In this study GIS- based weighted sum analysis approach was used to identify sites of water potential zones which can be used for both water extraction and rejuvenation of these conventional water sources in Suyal river watershed. GIS based tools can be used for studying of relief and structural aspects of basin. Different factors were quantified and the influence of each factor over is judged. Results show that 21% of area lies under good recharge potent ability while 79% area lies under poor ground water potential region. Areas with good to excellent recharge potential may be considered for augmentation measures to sustain its specific yield in the future.
  • ThesisItemOpen Access
    A study of settlement behaviour of piled raft foundation using PLAXIS 3D
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-10) Behl, Shubham; Subir Kumar
    A Pile Raft foundation is a type of geotechnical foundation that consists of three components: the raft, the piles and the soil domain. Piled raft foundations (PRF) are commonly used under high-rise buildings and other heavy structures because of their effective load transfer mechanism, which allows the superstructure loads to be partially carried by the raft and partially by the piles. In the present study, an effort to figure out settlement response of a piled raft foundation on a multi layered soil by varying raft thickness, length of piles and diameter of piles by using PLAXIS 3D is made. Settlement at different loading rate have also been observed using the software and a load v/s settlement response has been plotted. PLAXIS 3D which is based on finite element method was used to analyse this complex problem of soil structure interaction and settlement was calculated. It was found that raft thickness has no significant effect on the load settlement relationship of a piled raft foundations either on small settlements or on large settlement levels. A significant decrease in settlement was also observed with increase in length and diameter of pile.
  • ThesisItemOpen Access
    Prediction of the scour depth around bridge piers using HEC-RAS model and empirical equations
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Dinesh Kumar; Mahar, P.S.
    The main cause of the collapse of a hydraulic structure such as a bridge is the scouring around the bridge piers. The discharge, depth of flow, morphology of the pier, and distribution of sediment particle size all have a role in the complicated process known as scouring. The scour depth at the piers of the Gaula bypass road bridge in Haldwani, India, has been evaluated in the current study using empirical equations and the HEC-RAS numerical model and the results are compared. A flood frequency study using Gumbel's distribution method has been conducted for the Gaula river Haldwani basin in Uttarakhand, India. In the study, floods having a return period of 5 to 1000 years have been considered. Grain size distribution analysis was performed for the soil samples collected from the river bed near the bridge piers to calculate d50 and d95. Using field data, a hydraulic model of the river at the bridge location was developed. Then, variations in flow discharge for scouring along the bridge were explored by inputting the scouring data of bridge piers for discharges with return periods of 5 to 1000 years. The study has revealed that several of the empirical equations are not sensitive to an increase in flow discharge, and the results are similar for floods of different return periods. However, the centre and lateral piers of the bridge showed an increase in scouring as the flow increased, according to the results of the HEC-RAS model. The scour depth pattern is nearly constant throughout all discharges. Additionally, the increasing discharge has a significant impact on both the left and right abutments. The scour depths for discharges with return periods of 5 and 1000 years were 5.47 m and 10.22 m, respectively by HEC-RAS. The effect of a gabion check dam proposed downstream of the bridge on the siltation of scoured river beds near the bridge piers and abutments has been also investigated by using HEC-RAS. In the study, it has been found that the river bed profile elevation gets significantly increased as a result of the construction of the check dam.
  • ThesisItemOpen Access
    Comparative study of irregular RC building with shear wall and steel bracing under seismic loading
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Ankit Kumar; Ankit Kumar; Vaneeta Devi; Vaneeta Devi
    The requirement of a multi-storey buildings is increasing day by day, but these buildings are highly affected by lateral loads. These lateral loads can be resisted by improving the lateral load resisting capacity of the building by the use of shear wall and steel bracing in the building at suitable locations. In the present study, the analysis of G+10 irregular RC building with shear wall and steel bracing at different locations in the building has been performed. The seismic forces are considered as per IS: 1893 (Part1) - 2016 and dead load, live load and other finishing loads are considered as per IS: 875 Part 1 and 2 in the analysis of various models considered in the present study. The building is considered in seismic zone V with damping ratio of 5%. Seismic analysis has been done using Response Spectrum method of dynamic analysis. 3D models of building with shear wall and steel bracing at different locations have been modelled and analyzed using “ETABS” software. The response parameters namely base shear, storey drift and torsion are critically analyzed to quantify the effects of shear wall and steel bracing at different locations in building. It has observed that base shear and torsion increases with the use of shear wall and steel bracing in irregular building as the stiffness of the building increases. The storey drift in the building decreases due to the increased stiffness. Since torsion is the most critical factor leading to major damage or complete collapse of buildings therefore, it is very essential that irregular buildings should be carefully analysed and designed for torsion. The performance of considered irregular building for stipulated sizes with shear wall is found better than steel bracing systems. Shear walls are definitely good mechanism for lateral loads itigation but the position of shear walls in the building should be made judiciously. In the present study, the Shear walls at exterior corners (Model 5) has found perform better than other modal cases being considered in the analysis.
  • ThesisItemOpen Access
    Analysis of bearing capacity of layered soil
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-10) Sweta; Gupta, S.S.
    Load bearing capacity of the foundation is the major concern in the field of geotechnical engineering. Ultimate bearing capacity can be defined as the least pressure at which soil undergoes shear failure. The ultimate bearing capacity of a foundation on layered soil is very important as it is a prerequisite to any design. The parameters upon which safe bearing capacity of soil depends are shape of the foundation, soil layering, depth of foundation, etc. The parameters selected for the present study were thickness of top layer of soil and width of the footing. For the present study, soil sample has been extracted from the site at Fazalpur in Rudrapur. Initially a numerical model was undertaken using finite element method (FEM), PLAXIS 3D. Three dimensional models in this study were represented using finite element analysis which in turn is based on Mohr coulomb failure criteria. The method used to analyse two layered soil systems was Meyerhof and Hanna method. The outcomes from PLAXIS 3D software and the classical approach (Meyerhof and Hanna) were compared. During the study it was observed that the bearing capacity of soil is directly proportional to the thickness of the top layer of the soil and inversely proportional to the length to width ratio of footing. The percentage variation between the results were from 2.32% to 14.89%. The variation was expected due to the detailed analysis of the soil layers in PLAXIS 3D while the manual method was based on Meyerhof and Hanna method.
  • ThesisItemOpen Access
    Reliability based optimal design of domestic sewer networks
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Rawat, Manisha; Mahar, P.S.
    A sewerage system is made up of a network of sewage pumping stations, manholes, and sewer pipes. Different types of sewers like house sewers, lateral sewers, branch sewers and trunk sewers carry sewage from individual residences to the sewage treatment plant. Along the sewer system, manholes are provided for maintenance, cleaning, and repair work. The main objective of this study is to build a linear optimization model for design of gravity-fed sewerage systems to dispose domestic wastewater utilizing the Darcy-Weisbach equation. The developed optimization model minimizes the total cost of the gravity-fed sewer line that meets the minimum and maximum velocity requirements to serve the desired population. Further, the viscosity of the sewage is taken in to account in the developed model. The output from the model is the pipe sizes and slopes of the lateral sewers and trunk sewer. The developed linear optimization model is applied to the Zone L phase I sewer network of Dehradun city. The total number of variables and links are 5868 and 652, respectively. Reliability of the optimally designed gravity-fed sewer network is calculated for trunk line by using first order analysis of uncertainties. Relation between risk and coefficient of variation for mean loading rate is also studied.
  • ThesisItemOpen Access
    Prediction of the scour depth around bridge piers using HEC-RAS model and empirical equations
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Dinesh Kumar; Mahar, P.S.
    The main cause of the collapse of a hydraulic structure such as a bridge is the scouring around the bridge piers. The discharge, depth of flow, morphology of the pier, and distribution of sediment particle size all have a role in the complicated process known as scouring. The scour depth at the piers of the Gaula bypass road bridge in Haldwani, India, has been evaluated in the current study using empirical equations and the HEC-RAS numerical model and the results are compared. A flood frequency study using Gumbel's distribution method has been conducted for the Gaula river Haldwani basin in Uttarakhand, India. In the study, floods having a return period of 5 to 1000 years have been considered. Grain size distribution analysis was performed for the soil samples collected from the river bed near the bridge piers to calculate d50 and d95. Using field data, a hydraulic model of the river at the bridge location was developed. Then, variations in flow discharge for scouring along the bridge were explored by inputting the scouring data of bridge piers for discharges with return periods of 5 to 1000 years. The study has revealed that several of the empirical equations are not sensitive to an increase in flow discharge, and the results are similar for floods of different return periods. However, the centre and lateral piers of the bridge showed an increase in scouring as the flow increased, according to the results of the HEC-RAS model. The scour depth pattern is nearly constant throughout all discharges. Additionally, the increasing discharge has a significant impact on both the left and right abutments. The scour depths for discharges with return periods of 5 and 1000 years were 5.47 m and 10.22 m, respectively by HEC-RAS. The effect of a gabion check dam proposed downstream of the bridge on the siltation of scoured river beds near the bridge piers and abutments has been also investigated by using HEC-RAS. In the study, it has been found that the river bed profile elevation gets significantly increased as a result of the construction of the check dam.
  • ThesisItemOpen Access
    Study of seismic performance of RC building with different infill wall materials using pushover analysis
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-10) Bisht, Dhirender Singh; Sunil Kumar
    Among all-natural disasters, earthquakes are the most unexpected and destructive ones, and it is extremely challenging for an engineer to figure out the design for a structure that behaves well under upcoming seismic events and stays within the constraints of economy and life safety. The study of the seismic performance under earthquakes is not simple due to random and fast seismic vibrations in the base of the structure. In the present study, the pushover analysis of a G+3 RC building is done and the effect of infill wall has been considered using two approaches viz. Typical Consulting Practice (TCP) and Infilled Modelling Approach (IFM). The TCP is a generalized and common approach in which the only load of infill wall is taken in the model. Whereas infill walls are modeled as struts in IFM approach as per the procedure given in IS 1893: 2016. The latter is normally not practiced in structural design offices. The building is analyzed using structural analysis software ETABS 20. Two types of infill wall material viz. brick infill and Autoclaved Aerated Concrete (AAC) blocks are considered. Design forces like maximum axial forces in columns, maximum sagging bending moment in beams storey displacement, mode shapes and capacity curve are compared for TCP and IFM approach. It is observed that modelling of infill panels, indeed, largely affect the seismic assessment. The design forces decrease significantly by using AAC blocks. This justifies the reason for AAC blocks being an emerging choice among many builders.
  • ThesisItemOpen Access
    A comparative study on slope stability analysis by limit equilibrium and finite element methods
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-10) Rawat, Arju; Ajit Kumar
    The stability analysis of slope is one of the most significant topic in soil mechanics, which has particular significance in geotechnical engineering. Slope stability analysis is typically used to aid in the safe and cost-effective design of excavations, embankments, earth dams and landfills. The purpose of any stability analysis of slope is to determine the critical failure surface with the minimum value of factor of safety. The factor of safety is defined as the ratio of available shear strength of soil to the strength needed to maintain equilibrium. By comparing the factor of safety of various trial slip surfaces, the critical failure surface for a given slope can be identified. For calculations of slope stability, finite element techniques have recently been developed, but limiting equilibrium techniques are still commonly utilised. In the present study, the failure surface and factor of safety of slope were examined in relation to the soil parameters cohesion (c), angle of internal friction (ϕ) and unit weight (γ). software programs (SLOPE/W and PLAXIS 2D) and Swedish circle method were used to calculate the factor of safety and determine the critical failure surface. The outcomes obtained from SLOPE/W software, PLAXIS 2D software and Swedish circle method were compared. The conclusions showed that compared to SLOPE/W, PLAXIS 2D is easier to use as slope stability assessment software. It gives about 6 % lower factor of safety value than SLOPE/W. On the other hand, Swedish circle method is the most complicated and usually gives the highest value for the factor of safety than SLOPE/W and PLAXIS 2D. The Swedish circle method is time-consuming because this method required lots of trials to be done manually, as this method is complex, so softwares are more preferred now-a-days.