Civil Engg

Landing and takeoff overruns, undershoots, and veer-offs account for most of the accidents that occur on or in the immediate vicinity of the runway. Accident statistics show that, from 1959 to 2009, 55% of the world's jet fatal aircraft accidents occurred during landing and takeoff phases of the flight and accounted for 51% of all onboard fatalities (Boeing 2010). Although in many cases the causal factors involve some type of human error, the conditions at the airport may contribute significantly to the probability and severity of the accidents. The purpose of this study was to collect the data of runway excursion accidents and find out the reason how and why they happen. We have mainly focus on contamination of runway.

Trip generation for work is one of the main purposes of travel in the urban areas. Activity based methods predicts behavior of traveler as derivative of activities. By predicting which activity performed at particular destination and time, trips and their timing and locations are used to develop activity based trip generation models. The aim of this paper is to develop activity based trip generation model which addresses shortcomings of the conventional trip based approach. In this study, trip generation model phenomenon has been studied for households in Trimurti Nagar in Nagpur city. Home-interview method is adopted to collect data to develop the trip generation model. Activity patterns are classified into five types and selected as dependent variables while other variables like age, gender, income, travel time, travel cost, etc., are selected as independent variables in the NLOGIT package to obtain the most statistically well accepted predicted activity pattern of individuals. Th...

Trip generation work is one of the main purposes of travel in the urban area. In this paper we aggregated the various studies approaches for activity based trip generation modeling for work commuters. The study of the activity based trip generation modeling shifted the transportation planning from the construction of new infrastructure to the effective management of travel demand. These management strategies were aimed at the disturbing and managing in travel demand and determination of aggregate travel demand for work commuters. The goal of the paper is to define techniques of collection of data for activity pattern behavior of individual and activity based trip generation modeling by various researchers for the certain zone. Keywords: Activity base approach, trip rate, travel data, work commuters, trip based approach

from the past few year base isolation has become one of the most popular tool for earthquake resistant design of structure. The concept of decoupling of building with the help of base isolation is being invented from a century. Many researchers has been worked on base isolation system that it is become acceptable as a whole in engineering field. However so many types of isolation systems are being invented but amongst them few has become accepted thoroughly. Now a days full scale testing is being performed on shake table to test the various characteristics of different isolators. Present review summarizes literature and theoretical aspect available on base isolation system. Some of the papers also deals with the effectiveness of different available isolator and their applicability. The main aim of the present paper is to focus on the background of isolators and also to provide useful guideline in making appropriate choices among the large number of available isolators.

This paper deals with the analysis of productivity of labors for construction of basic elements of a building which are casting of slab, beams, columns and construction of burnt brick masonry. The study was done for the duration of 15 weeks within which all the elements regarding the productivity of labors were studied. The productivity of labors was analyzed by considering man hours required for accomplishing particular cubic meter of work done. The results of the paper show various factors which affected the productivity of labors and caused the delay in completion of project.

The dynamic analysis of reciprocating engine is carried out by using software analysis in SAP-2000 with fixed base and with foundation spring. The comparison is made with the mentioned clauses if IS-2974-1982 (Part I). The software results were compared with the manual results which all are found to be safe. The parameters of soil structure interaction is compared with normal foundation. The conclusion made confirming to IS code and the codal provisions satisfied. The results were validated

The dynamic analysis of machine foundation is an important parameter in the design process, as the machine creates unbalance forces while start operation. The basic theory of vibration of foundation, frequency parameter, and forced vibration are discussed. The speed variation and depth variation are discussed. The calculation are carried out by referring previous papers,. The calculations are made by coupled and uncoupled modes of vibration. The results calculated by using five examples with different variations and the graph plotted by using the calculated data the main aim is to know the frequency and amplitude of machine. the conclusion discussed in this paper shows the linear relationships. In relation to found the amplitude of foundation.

Engineers mostly adopt complex non-linear methodsto analyze multistorey residential building to sustain earthquake forces. This paper uses much simpler Equivalent Static method to analyse G+17 storey building to resist earthquake forces using SAP2000 software. The seismic analysis is further compared with non-seismic analysis using DL+LL combination. It was observed that the seismic results obtained consisted of drastically increased maximum moments and shear forces than the non-seismic analysis.

Trip generation work is one of the main purposes of travel in the urban area. In this paper we aggregated the various studies approaches for activity based trip generation modeling for work commuters. The study of the activity based trip generation modeling shifted the transportation planning from the construction of new infrastructure to the effective management of travel demand. These management strategies were aimed at the disturbing and managing in travel demand and determination of aggregate travel demand for work commuters. The goal of the paper is to define techniques of collection of data for activity pattern behavior of individual and activity based trip generation modeling by various researchers for the certain zone.

Trip generation for work is one of the main purposes of travel in the urban areas. Activity based methods predicts behavior of traveler as derivative of activities. By predicting which activity performed at particular destination and time, trips and their timing and locations are used to develop activity based trip generation models. The aim of this paper is to develop activity based trip generation model which addresses shortcomings of the conventional trip based approach. In this study, trip generation model phenomenon has been studied for households in Trimurti Nagar in Nagpur city. Home-interview method is adopted to collect data to develop the trip generation model. Activity patterns are classified into five types and selected as dependent variables while other variables like age, gender, income, travel time, travel cost, etc., are selected as independent variables in the NLOGIT package to obtain the most statistically well accepted predicted activity pattern of individuals. The goal of the paper is to determine activity travel pattern behavior of individual and development of activity travel pattern choice model for work commuters and calculate the aggregated travel demand for Transportation Analysis Zone i.e. Trimurti Nagar, Nagpur

This paper deals with effect of position and number of friction dampers on response of 2D frame. To fulfill this objective, two bay & five storey 2D frame is analyzed using software SAP2000. The study is carried out using two, three and four number of friction dampers with different locations keeping slip load & stiffness constant. As the behavior of friction damper is elasto-plastic, the Non-Linear Time History Analysis of all the frames is done using El Centro ground motion record. To study the effect of number and position, percentage energy dissipated in accordance with energy induced in the frame, fundamental time period, base shear, joint displacement and member forces is considered. The results have showed that number and placement of damper influences significantly the structural response. A large number of dampers do not always leads to best benefit in terms of energy dissipation. It was found that the location of damper which tuned the building with respect to input acceleration dissipates maximum percentage of input energy.

— To prevent the casualties and collapse of structures caused due to earthquake load, it is important to design the safe structure which will sustain under the worse load combination. Most of the structure designed as per the current code of design is found to be very critical near the joint core under the action of seismic loading resulting in yielding of material. This paper deals with the simulation of one-third exterior joint by using ANSYS. One model as per conventional way of practice in India by using IS 13920-1993 and other two model were provided with cross bars at joint core. The seismic time-history record of El-Centro E_11360 used to find the response of three models in terms displacement, acceleration & yield stress of joint. The comparison indicated the use of 6mm cross bars at joint core serve well in terms of parameters mentioned as compare to the conventional way of design of joint.

In reinforced concrete framed structure the beam-column joint are critical regions and the joint take part in a very significant role both during the design and construction stages. There are practical difficulties involved in the construction of reinforced beam-column joints. In the design and detailing of beam-column joints, it is desired to prevent the brittle shear failure of the joint so that the integral capacity of the connecting beams and columns can be developed. Unsafe design and detailing within the joint region will results in damage the entire structure, even if other structural members conform to the design requirements. The focus of review is to determine the variation of stresses, torsional effects and eccentricity impact on performance of joint under severe earthquake loads.

Travel Time has turned out to be a standout amongst the most crucial markers of transport execution. In such manner, the effect of movement occurrences on Travel Time is urgent for both administrators and explorers. The reason for this examination was to build up a choice bolster approach to recognize the ideal areas of a limited arrangement of point locators on an interstate passageway to minimize the mistake in travel time estimation. Activity occurrences diminish the limit of street fragments and bother typical movement stream. Besides, this examination shows the basic strides to assess the effect of movement incident furthermore represents how investigation can be performed and at last that the exactness of results can be expanded. The research aim is to analyze impact of traffic incident and identify traffic condition that might lead to traffic accident by using PTV Vissim. The travel time is increased by 18.25% and in average 2.01% due to lane block condition and incident points respectively. This travel time will affect the efficiency of network of study area; so there is necessity to consider the impact and authorities should manage the situation adequately.

— Dampers are the supplemented device which are used in the structure to dissipate the energy against the ground movement. Of which, Friction damper consists of steel plates which dissipate energy by sliding against each other in opposite direction. The aim of this research program is to analyse the building with and without friction damper subjected seismic loading with unsymmetrical plan. The first step of this project is to study the design parameters of the friction dampers. The modelling is carried out using software SAP2000. In addition, different parameters such as base shear, axial force, shear force, torsional moment, bending moment, fundamental time period, energy dissipation of bare frame and friction-damped frame has been studied.

Conventional methods of seismic rehabilitation with concrete shear walls or steel bracing are not considered suitable for some buildings as upgrades with these methods would have required expensive and time consuming foundation work. Supplemental damping in conjunction with appropriate stiffness offers an innovative and attractive solution for the seismic rehabilitation of such structures. This paper deals with the use of friction damper as a passive dissipative device in order to seismic retrofit of existing structures and discusses the optimal placement criteria. To fulfill this objective, six storey and ten storey L-shaped buildings have been modeled with five different damper location formats in SAP2000 subjected to El Centro and Utterkashi earthquake records. Non-Linear Modal Time History Method has been used for the analysis and base shear, joint displacement, member forces and hysteresis energy has been compared to find out most optimal damper location format.

The effect of soil structure interaction (SSI) on a single degree of freedom system with and without friction damper is analysed in the paper. The structure with different mass, stiffness and soil conditions was prepared and analysed for ten different earthquake records. Using the non-linear time history analysis, the structural response of a single degree of freedom structure with varying slip load of friction damper was studied. It was observed that the performance of friction dampers is influenced by soil parameters. Also, it was established that an optimum slip load and stiffness of brace changes with respect to the type of soil.

Engineers mostly adopt complex non-linear methodsto analyze multistorey residential building to sustain earthquake forces. This paper uses much simpler Equivalent Static method to analyse G+17 storey building to resist earthquake forces using SAP2000 software. The seismic analysis is further compared with non-seismic analysis using DL+LL combination. It was observed that the seismic results obtained consisted of drastically increased maximum moments and shear forces than the non-seismic analysis.