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The IUP Journal of Structural Engineering
ISSN: 0974-6528
A ‘peer reviewed’ journal distributed by EBSCO and Proquest Database

Oct'16



Previous Issues

Structural engineering is usually considered as a specialty discipline within civil engineering, but can also be studied in its own right. It is the science and art of designing and making buildings, bridges, frameworks and other similar structures. It has taken a completely different path since the middle of the 20th century. It involves understanding the load-resisting properties of components such as beams, columns, walls, slabs, plates, arches, shells, catenaries, etc., and selecting, proportioning, and connecting different components of a structure to resist the forces and displacements without affecting the safety of the structure. Structural Engineers are responsible for using funds, structural elements and materials creatively and efficiently. In recognition of the growing importance of this branch of engineering, IUP has come up with a quarterly journal, The IUP Journal of Structural Engineering.

 

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Focus Areas
  • Reinforced Concrete Structures
  • Steel Structures
  • Cable Structures
  • Nonlinear Structures
  • Nuclear Containment Structures
  • Structural Dynamics and Earthquake Engineering
  • Structural Analysis and Mechanics
  • Structural Condition/Health Monitoring of Bridge Structures
  • Analysis and Control of Vibrations
  • Properties and Strength of Materials
  • Construction Engineering
 
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Evaluation of Response Reduction Factor for Steel Building Using Various Types of Bracings
Estimation of Period of Vibration of Symmetrical Reinforced Concrete Buildings in Seismic Analysis
An Experimental Study on SCC with M-Sand and Steel Fibers
An Analysis of Hydrated Lime Included Fly Ash Concrete Based on SEM
Influence of Glass Fiber and Fly Ash on the Mechanical Properties of Concrete
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Contents
(October 2016)

Evaluation of Response Reduction Factor for Steel Building Using Various Types of Bracings

-- Ajinkya S Akolkar and Keshav K Sangle

The paper aims at evaluating the value of Response Reduction Factor (RRF) for 3D model of steel buildings. Nonlinear static pushover analysis was carried out to assess the structural performance of different bracing systems in steel buildings of 4, 6 and 8 storeys. Five structural configurations were used, namely, Moment Resisting Frames (MRFs), Diagonal Braced Frames (DBFs), X Braced Frames (XBFs), V Braced Frames (VBFs) and Chevron Braced Frames (CBFs). The effect of the parameters, such as the height of building and the type of bracing system, was investigated on the value of RRF. The results show that RRF decreases as the height of the building increases and also this factor is on a higher side for braced frames than unbraced frames. The paper also shows that the values of RRF prescribed by IS code are on a very safer side than the actual values obtained, thereby giving rise to uneconomical design of structures.

Estimation of Period of Vibration of Symmetrical Reinforced Concrete Buildings in Seismic Analysis

-- Prakash Sangamnerkar and S K Dubey

Seismic design codes provide empirical expressions to evaluate fundamental period of vibration of Reinforced Concrete (RC) buildings to derive design base shear. Empirical expression prescribed in the Indian seismic code is a function of the height of the building only and does not consider the effects of other structural parameters of the building. Fundamental period predicted by these expressions is widely used in the practice. It is therefore very important to use realistic values of time period in the seismic design of the structures. This paper deals with the evaluation of fundamental period of vibration of symmetrical RC buildings, which incorporates parameters like number of bays in either direction, base width/plan area of the building and stiffness of the structure, in addition to the height of the structure. Period equations were developed by performing nonlinear regression analysis on the results obtained by dynamic analysis of 132 various structural configurations, and another 36 results were obtained to compare the results of dynamic analysis with the proposed equation.

An Experimental Study on SCC with M-Sand and Steel Fibers

-- Shashidhar S Rajenavar and V D Gundakalle

Self-Compacting Concrete (SCC) is the concrete of this era, which is being used quite often nowadays all over the world. The main reason for its becoming popular in the construction field is due to its special properties in fresh state such as self-flow ability and self-compacting ability. To enhance ductility and toughness properties and to reduce the drying shrinkage, steel fibers are added. The volume and length of steel fibers in mix affect the flow properties of wet mix. Hence, the mix should satisfy the EFNARC guidelines for workability at fresh state and strength requirements at hardened state. In the present investigation, 30% of river sand is replaced with Manufactured sand (M-sand) and is kept constant in all the mixes. Further, crimped type steel fibers are added in volumetric fractions of 0%, 1%, 1.5% and 2% in the concrete mix. It is observed that 1.5% of steel fibers gives the satisfactory results in fresh and hardened properties for M45 grade fiber reinforced SCC.

An Analysis of Hydrated Lime Included Fly Ash Concrete Based on SEM

-- A Sofi and Siddharth George

With fly ash concrete gaining popularity, owing to both environmental and economic factors, it is critical that we tackle its practical shortcomings, most prominent of which is its low early strength development. Inefficient pozzolanic reaction of fly ash particles has been long deemed as its cause. A prevalent theory suggests that this lack may be overcome by addition of hydrated lime (calcium hydroxide), and thus promoting increased pozzolanic reaction, resulting in an overall enhanced matrix within the concrete structure. This paper is a study of fly ash concrete supplemented with hydrated lime and its subsequent effects on various mechanical properties, so as to form a collection of basic data, which is then compared to those values corresponding to conventional fly ash concrete. The study makes informed conclusions based on the results obtained by theorizing micro mechanics of the mix, expected chemical reaction of constituents and from SEM analysis.

Influence of Glass Fiber and Fly Ash on the Mechanical Properties of Concrete

-- Chandana Priya C and S S Phani

Conservation of natural resources is the key requirement for maintaining ecological balance. Thus, there is a need to find alternate construction materials. In that direction, the present experimental investigation is carried out to investigate the mechanical properties of glass fiber reinforced fly ash concrete with fly ash replacement of 0%, 20% and 40% by weight of cement and addition of glass fibers of length 12 mm and diameter 14 micron in four different volume fractions of 0%, 0.5%, 1% and 1.5%. Compressive strength is measured by testing standard cubes (150 mm x 150 mm x 150 mm) at the age of 7, 28 and 56 days. Flexural strength is measured by testing standard prisms (100 mm x 100 mm x 500 mm) at the age of 28 and 56 days. Splitting tensile strength and modulus of elasticity are measured by testing standard cylinders (150 mm dia x 300 mm height) at the age of 28 and 56 days.

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Automated Teller Machines (ATMs): The Changing Face of Banking in India

Bank Management
Information and communication technology has changed the way in which banks provide services to its customers. These days the customers are able to perform their routine banking transactions without even entering the bank premises. ATM is one such development in recent years, which provides remote banking services all over the world, including India. This paper analyzes the development of this self-service banking in India based on the secondary data.

The Information and Communication Technology (ICT) is playing a very important role in the progress and advancement in almost all walks of life. The deregulated environment has provided an opportunity to restructure the means and methods of delivery of services in many areas, including the banking sector. The ICT has been a focused issue in the past two decades in Indian banking. In fact, ICTs are enabling the banks to change the way in which they are functioning. Improved customer service has become very important for the very survival and growth of banking sector in the reforms era. The technological advancements, deregulations, and intense competition due to the entry of private sector and foreign banks have altered the face of banking from one of mere intermediation to one of provider of quick, efficient and customer-friendly services. With the introduction and adoption of ICT in the banking sector, the customers are fast moving away from the traditional branch banking system to the convenient and comfort of virtual banking. The most important virtual banking services are phone banking, mobile banking, Internet banking and ATM banking. These electronic channels have enhanced the delivery of banking services accurately and efficiently to the customers. The ATMs are an important part of a bank’s alternative channel to reach the customers, to showcase products and services and to create brand awareness. This is reflected in the increase in the number of ATMs all over the world. ATM is one of the most widely used remote banking services all over the world, including India. This paper analyzes the growth of ATMs of different bank groups in India.
International Scenario

If ATMs are largely available over geographically dispersed areas, the benefit from using an ATM will increase as customers will be able to access their bank accounts from any geographic location. This would imply that the value of an ATM network increases with the number of available ATM locations, and the value of a bank network to a customer will be determined in part by the final network size of the banking system. The statistical information on the growth of branches and ATM network in select countries.

Indian Scenario

The financial services industry in India has witnessed a phenomenal growth, diversification and specialization since the initiation of financial sector reforms in 1991. Greater customer orientation is the only way to retain customer loyalty and withstand competition in the liberalized world. In a market-driven strategy of development, customer preference is of paramount importance in any economy. Gone are the days when customers used to come to the doorsteps of banks. Now the banks are required to chase the customers; only those banks which are customercentric and extremely focused on the needs of their clients can succeed in their business today.

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