American Journal of Civil Engineering

Volume 10, Issue 2, March 2022

  • Effect of Contractor – Subcontractor Relationship on the Performance of Construction Project: A Case Study of Dire Dawa Construction Projects

    Elias Defalgn Debelo, Zerihun Berhane Weldegebriel

    Issue: Volume 10, Issue 2, March 2022
    Pages: 31-42
    Received: 21 February 2022
    Accepted: 1 April 2022
    Published: 9 April 2022
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    Abstract: Because of the common practice of subletting construction work into smaller packages, subcontracting has become an attractive technique in the construction business. Effective subcontractor selection and monitoring reduce the problem while also determining the performance of construction firms. The engagement of a subcontractor in a building constr... Show More
  • Stability Analysis of Tunnel by External Force Increment Method

    Xiaojun Yin, Jun Xie

    Issue: Volume 10, Issue 2, March 2022
    Pages: 43-48
    Received: 5 March 2022
    Accepted: 11 April 2022
    Published: 20 April 2022
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    Abstract: A new tunnel stability analysis method is proposed which is the external force increment method (EFIM) to transform the traditional tunnel stability ratio (N). The EFIM can be defined as the field stability raito (Nf), which consists of two newly defined parameters, namely the natural stability ratio (Nn) and the critical stability ratio (Nc). The ... Show More
  • Elastic-plastic Buckling Analysis of Q690 High Strength Steel Tubes Under Global Bending

    Kapnang Franky, Lei Chen, Du Mengxing, Ngalle Itoumbou Christina Joyce

    Issue: Volume 10, Issue 2, March 2022
    Pages: 49-54
    Received: 18 April 2022
    Published: 20 April 2022
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    Abstract: In recent years, high-strength steel has been used extensively for infrastructures because of its many advantages, such as its ductility and strain-hardening properties, which are inferior to those of ordinary structural steel, and the small dimensions of the structural elements, which lead to greater freedom and elegance in design, resulting in li... Show More
  • The Effect of the Expected Time-to-Purchase on the Acceptable Price Premium for Green Buildings

    Shoshi Ofek, Andrea Ghermandi, Boris Portnov

    Issue: Volume 10, Issue 2, March 2022
    Pages: 55-63
    Received: 13 February 2022
    Accepted: 7 March 2022
    Published: 20 April 2022
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    Abstract: Green buildings help to mitigate the impacts of construction on the environment by reducing the use of natural resources and limiting the emission of air pollutants associated with building construction and maintenance. Homebuyers who understand the life-cycle benefits of green buildings (such as lower operating costs, better indoor environment and... Show More
  • Nonlinear Stability Analysis of Elastic High Strength Steel Tubes Under Global Bending

    Ngalle Itoumbou Christina Joyce, Lei Chen, Kapnang Franky

    Issue: Volume 10, Issue 2, March 2022
    Pages: 64-69
    Received: 26 April 2022
    Published: 28 April 2022
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    Abstract: A recent computational study has found unique zones of stability behaviour in elastic High-strength steel tubes under global bending with different geometrical lengths. A situation under which the most compressed fiber approaches the buckling stress for uniform axial compression is the initial estimation of elastic buckling strength in bending. Cyl... Show More
  • Assessment of Stabilized Earth Blocks (STEB) Strength to Sandcrete Blocks Used in Housing Construction

    Ezemerihe Anthony Nnamdi, Nnadi Ezekiel Oluwaseun Ejiofor, Okwu-Delunzu Virginia Ugoyibo

    Issue: Volume 10, Issue 2, March 2022
    Pages: 70-78
    Received: 15 March 2022
    Accepted: 31 March 2022
    Published: 28 April 2022
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    Abstract: Shelter has been considered as the basic physiological need of a man after food and clothing. The use of stabilized earth soil as construction materials have solved and sustained the housing need of most communities because of its affordability prior to the use of the recent sandcrete block work in our modern construction technology. The research w... Show More