American Journal of Civil Engineering

Volume 2, Issue 2, March 2014

  • A Discrete-Time Algorithm for the Resolution of the Nonlinear Riccati Matrix Differential Equation for the Optimal Control

    Tahar Latreche

    Issue: Volume 2, Issue 2, March 2014
    Pages: 12-17
    Received: 7 November 2013
    Published: 10 March 2014
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    Abstract: The Riccati Matrix Differential Equation (RMDE) is an interesting equation in different fields of science and engineering practice. In fact, that the arithmetic solution for this matrix differential equation in the general case of varying-time matrices is very difficult to find. The literature offers the solution of this differential equation in t... Show More
  • Performance of Damage Detection Methods used in Bridge Structures through Dynamic Tests in Steel Beams

    Rolando Salgado, Gustavo Ayala, Paulo J. S. Cruz, Sergio A. Zamora

    Issue: Volume 2, Issue 2, March 2014
    Pages: 18-26
    Received: 31 January 2014
    Published: 20 March 2014
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    Abstract: In this document, the performance of damage detection methods used for the evaluation of bridge structures was determined. To do that, these methods were applied to the experimental dynamic parameters obtained from cracked steel I beams. Different damage scenarios were simulated in the steel I beams through saw-cuts perpendicular to the longitudina... Show More
  • Analysis of Physicochemical Properties for Treatment of Dredged Deposit Soil

    Youngshin Lee, Sanghee Shin

    Issue: Volume 2, Issue 2, March 2014
    Pages: 27-34
    Received: 27 February 2014
    Published: 20 March 2014
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    Abstract: This study was conducted to analyze the properties of deposit soil dredged from a reservoir which was processed for efficient treatment and management. Before starting this study, the physicochemical properties and the heavy metal content of the deposit soil were investigated to collect the fundamental data. In a treatment experiment proposed to us... Show More
  • Critical Factors Affecting Construction Labor Productivity in Egypt

    Sherif M. Hafez, Remon F. Aziz, Enas S. Morgan, Madeha M. Abdullah, Eman K. Ahmed

    Issue: Volume 2, Issue 2, March 2014
    Pages: 35-40
    Received: 29 January 2014
    Published: 30 March 2014
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    Abstract: The construction industry plays an important role in any developing country. This sector will promote the infrastructure required in socioeconomic development which also a major contributor to the overall economic growth. One of the main factors that had influence in the construction industry growth is productivity which mainly associated with the ... Show More
  • An Overview on the Seismic Design of Braced Frames

    Muhammad Tayyab Naqash, Khalid Mahmood, Salim Khoso

    Issue: Volume 2, Issue 2, March 2014
    Pages: 41-47
    Received: 10 February 2014
    Published: 30 March 2014
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    Abstract: Seismic design of steel braced frames in the modern building codes follow the capacity design approach where some of the members are obliged to dissipate energy whereas others are taken care to be protected. In this paper the seismic design methodologies used by European and American approaches for Concentric Cross Braced Frames (CCBF) and Eccentri... Show More
  • Development of Rainfall Recharge Model for Natural Groundwater Recharge Estimation in Godagari Upazila of Rajshahi District, Bangladesh

    Md. Nurul Islam, Anupam Chowdhury, Kazi Moinul Islam, Mohammed Ziaur Rahaman

    Issue: Volume 2, Issue 2, March 2014
    Pages: 48-52
    Received: 3 March 2014
    Published: 30 March 2014
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    Abstract: Estimation and forecast of groundwater recharge and capacity of aquifer are essential issues in effective groundwater resource management in Bangladesh. Godagari Upazilla is located in High Barind Tract situated in the northwestern part of Bangladesh. A typical dry climate with comparatively high temperature prevails in this Barind area. It is part... Show More
  • Investigation of Ground Water Table in the South-East (Chittagong) Part of Bangladesh

    Md. Abdul Hamid Mirdad, Swapan Kumar Palit

    Issue: Volume 2, Issue 2, March 2014
    Pages: 53-59
    Received: 5 March 2014
    Published: 30 March 2014
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    Abstract: Ground water forms the major portion of earth’s fresh water source and it is almost safe to drink. Depletion of ground water table due to continuous pumping causing scarcity of water in the city area of Bangladesh. So information about ground water table is required for future recommendation of ground water supply to general people. For the investi... Show More