Risk Analysis Of Elevated Corridor Project Using Failure Mode And Effect Analysis (FMEA) And Combined Fuzzy FMEA
Debasis Sarkar and Gunjan Bhavnani
Compared to other industries, construction industry is subjected to a greater risk due to its unique features in various phases like feasibility, design and development, implementation and execution. So, a systematic process of risk analysis is required to classify, identify, and analyze these risks, and to formulate risk response strategies. This paper is an attempt to develop a methodology of risk analysis by the use of Failure Mode and Effect Analysis (FMEA) and fuzzy FMEA of elevated corridor construction for metro rail. Traditional FMEA is a structured technique that can help in identifying the failure modes within the system, assessing their impact, and planning for corrective action. But, interrelationship between the input terms of FMEA, i.e., probability (P), impact (I), and detection (D) is not possible within the scope of traditional FMEA. Hence, fuzzy logic is incorporated within FMEA to map the interrelationship between the input terms. Case studies of Ahmedabad-Gandhinagar metro rail and Mumbai metro rail construction at various phases are presented to validate the concept of this technique. The use of this approach helps to establish the degree of truth between the numerical results obtained from questionnaires and the linguistic terms supporting the same.
Construction Costs In India: An Empirical Study In Sectoral And Regional Perspective
Raju John
Construction sector is an important segment of the Indian economy. One of the important issues faced by the construction sector in India is the formidable cost it incurs. According to Planning Commission of India, the rise in costs in construction sector will adversely affect Indian economy. However, no systematic study has been done about the behavior of costs in Indian construction sector in the recent past. This study tries to fill that gap. This study analyzes the increase of construction costs in India using Construction Cost Indices prepared by Construction Industry Development Council (CIDC). The study has calculated the increase of construction costs in different regions of India and in various types of construction. By understanding these differences, the regional analysis of Indian construction industry and types of construction showing higher and lower increase of construction costs were identified.
Indian Economy, Construction Sector, Construction Costs, Construction Industry Development Council, Construction Cost Indices (CCI).
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Research Articles
Designing Of Pavement Maintenance Management System Using Cumulative Damage Model
Surendrakumar Katkar and Prashant Nagrale
The probabilistic model to find pavement deterioration helps to predict pavement condition and decide / prioritise the allocation of maintenance funds. To develop such model probability of change in pavement condition state from one to other with respect to time is necessary which is known as transition probability. The main focus of this research study is to estimate the transition probabilities from current available frequencies of pavements in a particular condition state, at a particular age, and to formulate Transition Probability Matrix (TPM). Pavement deterioration is then predicted by using Markovian approach. Considering limitations and unavailability of runtime database, in a developing country like India having huge road network, an attempt is made to develop a model that can give transition probabilities by analysing a group of pavements having similar characteristics of different age groups at single point of time. The model can be termed as Cumulative Damage Model (CDM) as it considers the pavement deterioration at any particular time from its construction, as a cumulative effect with respect to time. It is observed that CDM predicts pavement deterioration with more than 95% accuracy and with little effort. Difference between observed and predicted pavement frequencies by CDM is found due to chance only. Line by line minimization using Mean Square Test between relative pavement frequencies and assumed transition probabilities is found to be very useful technique to estimate optimum transition probabilities. Model is tested using Chi-square test and is found fit for the intended purpose.
CDM, TPM, Pavement Maintenance Management System
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Research Articles
Performance Evaluation Of Low Volume Roads In India Using Soft Computational Approach
Kundan Meshram, Suneet Kaur and Vandana Tare
The Government of India is taking up large projects and incurring large expenses for the development of rural roads. A periodic maintenance is essential for these roads. Hence, there is an urgent need of developing a pavement maintenance and management system for low volume roads. An attempt has been made in this paper to develop an Artificial Neural Network (ANN) model and a Multivariate Regression model to determine reasonably accurate Pavement Condition Index for low volume roads in India. Database used for building the model was collected from ten low volume roads of Madhya Pradesh, India, viz. Jhabua District, Indore District and Dhar District. Periodical data included condition of shoulder, effectiveness of surface drainage, MERLIN roughness value and Dynamic Cone Penetrometer (DCP) value of shoulder layer. Distresses like rutting, longitudinal depression in the central portion of each subsection, edge drop off and cracking are measured on these roads. By traffic survey, Commercial Vehicles Per day (CPVD) are determined. The entire data has been collected by the author, between April 2007 and November 2009 before the monsoon and after the monsoon periods.
Distress, DCP value, MERLIN roughness, Pavement Condition Index (PCI)
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Research Articles
Restoration Of Heritage Sites In India Through Public Private Partnerships
Debopam Roy
India is a country rich in cultural heritage and hence innumerable heritage sites are scattered all over the country. Many of these sites have withstood the onslaught of time, natural hazards, and different forms of vandalism, and need urgent attention and effort to restore their former glory. Archaeological Survey of India (ASI) is the apex body, which regulates all archaeological activities in the country, including preservation and conservation of historical structures. However they face serious challenges in terms of lack of funding, noncooperation from local inhabitants, and limited technical expertise and resources. Public Private Partnership (PPP) is a good mechanism to synergize the strengths of public sector and private sector for better mobilization of funds and technical resources to ensure better performance of projects with respect to cost, quality and time. Various models of PPP concessions have been successfully implemented in Indian infrastructure sector for efficient delivery of projects. There have been instances of participation of private agencies in this sector, in India and abroad, through traditional PPP business model, or philanthropic considerations or Corporate Social Responsibility considerations or other diversified models of collaborations. This paper aims to study the possibility of using PPP model for heritage restoration projects by reviewing case studies of successful projects in India and abroad.
Research & Publications Department 