ISSN (Print): 2328-398X

ISSN (Online): 2328-3998

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Article

Assessment of Shallow Geotechnical Properties, Koya City- North of Iraq

1Geotechnical Engineering Department, Faculty of Engineering, Koya University, Erbil, Iraq


American Journal of Civil Engineering and Architecture. 2016, 4(2), 67-73
doi: 10.12691/ajcea-4-2-5
Copyright © 2016 Science and Education Publishing

Cite this paper:
Zahraa Noori Rasheed, Bahra Dhahir Ghafour, Hemn Muhammad Omar. Assessment of Shallow Geotechnical Properties, Koya City- North of Iraq. American Journal of Civil Engineering and Architecture. 2016; 4(2):67-73. doi: 10.12691/ajcea-4-2-5.

Correspondence to: Zahraa  Noori Rasheed, Geotechnical Engineering Department, Faculty of Engineering, Koya University, Erbil, Iraq. Email: zahraa.noori@koyauniversity.org

Abstract

This study can provide and used as a reference and guidance to estimate site characterization of Koya city soils. Furthermore the results obtained from the assessment can be used as potential inputs for designing structures by the city planner, civil and geotechnical engineers. In order to create a geotechnical evaluation and develop a general description for the subsoil of the study area, 33 testing stations was randomly choose through the city, each station includes 3-5 testing points. All the disturbed and undisturbed samples were predicted from (1.5-2.5) m depth below the ground level. The tests included evaluation of the visual soil classification, index properties that are liquid and plastic limits, specific gravity, grain size analysis, compaction properties in term of dry unit weight and optimum moisture content, furthermore evaluation of the swelling potential of the soil in term of soil activity also predicted. The results indicated that 18% of the testing stations were fine grain soils and 82% were coarse grain soils. The soil classification and geotechnical testing showed that there are high variety in the types of soils and their corresponding properties. This high variety is based on the variety of the geological formation of the study area adding to that the losses in fines from some station and increase of then in anther stations depend on erosion of the fines, transmission of them with moved water, then these fines regimented on other stations represent the most effective reasons. Furthermore the analysis of results shows that the fine grain soils have low swelling tendency. Results from standard compaction test showed that the average optimum content for coarse grain soils was 12.4% while the average maximum dry density was 2.0 g/cm3.

Keywords

References

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Article

Adoption of the Building Information Modeling (BIM) for Construction Project Effectiveness: The Review of BIM Benefits

1School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430074, PR China


American Journal of Civil Engineering and Architecture. 2016, 4(3), 74-79
doi: 10.12691/ajcea-4-3-1
Copyright © 2016 Science and Education Publishing

Cite this paper:
Lancine Doumbouya, Guoping Gao, Changsheng Guan. Adoption of the Building Information Modeling (BIM) for Construction Project Effectiveness: The Review of BIM Benefits. American Journal of Civil Engineering and Architecture. 2016; 4(3):74-79. doi: 10.12691/ajcea-4-3-1.

Correspondence to: Changsheng  Guan, School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430074, PR China. Email: doumbouyala85@yahoo.fr, guancs2008@126.com

Abstract

Building Information Modeling (BIM) has recently attracted extensive attention in the Architectural, Engineering and Construction (AEC) industry with an increase in the use of information technology, all the while increasing productivity, efficiency, infrastructure value, quality, and sustainability, rendering a purer image of constructability issues that are dealt with at the beginning of the construction process. The purpose of this study is to better comprehend the BIM benefits and to analyze BIM adoption, thus providing better understanding of BIM and its usefulness in various stages of the construction projects. Our review concludes that BIM fulfills its purpose through all the stages of the construction project delivering benefits in terms of improved design quality, easiness to implement, information sharing ability, reduction of construction costs and design errors, faster work and shortening the construction time, enhancing energy efficiency, supporting construction and project management, and enabling its owners more operational efficiency in the building lifecycle. The current research identifies relevant factors and outcomes of BIM, and sets up a framework for a future study. The critical review of BIM benefits contributes to the existing body of literature on AEC and BIM.

Keywords

References

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[5]  Mihindu, S., & Arayici, Y. (2008, July). Digital construction through BIM systems will drive the re-engineering of construction business practices. In Visualisation, 2008 International Conference (pp. 29-34). IEEE.
 
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[6]  Lee, G., Lee, J., & Jones, S. A. (2012). The business value of BIM in South Korea. SmartMarket Rep.
 
[7]  Eadie, R., Browne, M., Odeyinka, H., McKeown, C., & McNiff, S. (2013). BIM implementation throughout the UK construction project lifecycle: An analysis. Automation in Construction, 36, 145-151.
 
[8]  Blanco, F. G. B., & Chen, H. (2014). The Implementation of Building Information Modeling in the United Kingdom by the Transport Industry. Procedia-Social and Behavioral Sciences, 138, 510-520.
 
[9]  Olofsson, T., Lee, G., & Eastman, C. (2008). Editorial-Case studies of BIM in use. IT in construction-Special Issue Case studies of BIM use, 13, 244-245.
 
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[19]  Bryde, D., Broquetas, M., & Volm, J. M. (2013). The project benefits of building information modelling (BIM). International journal of project management, 31(7), 971-980.
 
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Article

Investigation of Afram Shale for Road Construction

1Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana

2Department of Feeder Roads, Ministry of Roads and Highways, Accra, Ghana


American Journal of Civil Engineering and Architecture. 2016, 4(3), 80-83
doi: 10.12691/ajcea-4-3-2
Copyright © 2016 Science and Education Publishing

Cite this paper:
Yaw A. Tuffour, Samuel Y. Banini, Charles A. Adams. Investigation of Afram Shale for Road Construction. American Journal of Civil Engineering and Architecture. 2016; 4(3):80-83. doi: 10.12691/ajcea-4-3-2.

Correspondence to: Yaw  A. Tuffour, Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana. Email: yat@engineer.com

Abstract

Road construction projects in the Afram Plains area in Ghana are characterised by high material haulage cost due to the unavailability of suitable geologic materials local to the area for road work and the need to haul from distant sources. This study investigated the suitability of rock-like shale local to the Plains for road construction in the area. Samples of the rock-like shale from the Plains were evaluated in terms of strength as coarse aggregates and as compacted material before and after being subjected to soaking as well as varying cycles of soaking and drying. The soaking and drying simulated conditions under which pavement structures exist in the area over their design life due to the heavy rainfall in the Plains and the poor drainage characteristics of the terrain. The results indicated that whereas the rock-like shale in the un-soaked state met all the Ministry of Roads and Highways strength specifications for road aggregates, it lost practically all its strength in the soaked state. Water absorption was 900% the specification upper limit. Compacted samples lost close to 90% in CBR value following four days soaking. The high loss in strength under wetting conditions and the material’s ability to imbibe large amounts of water do not favour the use of the Afram shale for road construction in the long-term, given the fact that there are ample opportunities, within the area, for the material to come into contact with water for a long time when existing as part of a pavement structure.

Keywords

References

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[18]  Ministry of Roads and Highways (2007). Specifications for Roadworks and Bridges, Accra, Ghana.
 
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