Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.240
khalid sadani, E. Ismaeel
Traditional architecture style represents the evolutionary style and experienced characteristics of an urban environment that give a sense of place and identity. This style includes a mixture of technical and cognitive values that are difficult to conserve compared to other material resources. The process of organizing and classifying the architectural elements of these constructions in virtual digital manner is one of the means of preventive conservation for such elements and their values, which is essential in conservation operations of the built heritage. The study analyzes a number of international experiments that have employed shape grammar in studying and classifying the heritage elements in digital technique with specific rules. That because of the ability of these systems to examine the structure of the historic elements as it offers the possibility to combine their dimensional and morphological values, to classify them into a variety of categories with common characteristics in a specific style according to the local architectural language. The study seeks to determine the approaches of using the shape grammar as a mechanism of analyzing the structure of the elements of the Built heritage for classification. Next, to derive the rules and relationships that are used for the digital virtual reconstruction of the Built heritage according to the traditional architectural principles, and highlighting the digital applications and software that deals with the shape grammar in this field. The methodology of this study adopted the analysis of a number of studies that employed the shape grammar in the built heritage domain in order to review the potential of this digital systems and applications, to be presented as a documentation procedure for information management of preventive conservation projects of the urban environment in ancient cities.
{"title":"Classifying the Heritage Elements Using Shape Grammars","authors":"khalid sadani, E. Ismaeel","doi":"10.24086/aces2020/paper.240","DOIUrl":"https://doi.org/10.24086/aces2020/paper.240","url":null,"abstract":"Traditional architecture style represents the evolutionary style and experienced characteristics of an urban environment that give a sense of place and identity. This style includes a mixture of technical and cognitive values that are difficult to conserve compared to other material resources. The process of organizing and classifying the architectural elements of these constructions in virtual digital manner is one of the means of preventive conservation for such elements and their values, which is essential in conservation operations of the built heritage. The study analyzes a number of international experiments that have employed shape grammar in studying and classifying the heritage elements in digital technique with specific rules. That because of the ability of these systems to examine the structure of the historic elements as it offers the possibility to combine their dimensional and morphological values, to classify them into a variety of categories with common characteristics in a specific style according to the local architectural language. The study seeks to determine the approaches of using the shape grammar as a mechanism of analyzing the structure of the elements of the Built heritage for classification. Next, to derive the rules and relationships that are used for the digital virtual reconstruction of the Built heritage according to the traditional architectural principles, and highlighting the digital applications and software that deals with the shape grammar in this field. The methodology of this study adopted the analysis of a number of studies that employed the shape grammar in the built heritage domain in order to review the potential of this digital systems and applications, to be presented as a documentation procedure for information management of preventive conservation projects of the urban environment in ancient cities.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73212362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.217
I. Al-Ani, Hayder A. Al-Thamery, W. Mohtar
In Iraq, the two dominating surface water sources are Tigris and Euphrates Rivers in which some dams constructed on both of them forming reservoirs. Haditha Dam reservoir is one of the most essential sources of drinking, irrigation, flood control and hydropower generation in Anbar State, Western Part of Iraq. Besides, the reservoir is a unique habitat with a wide spectrum of biodiversity. The objective of this study is to investigate and monitor the water quality in Haditha Dam reservoir and introduce the Multi Criteria Analysis (MCA) to highlight the best runoff control measure depending on selected criteria and criteria weights. Experts were interviewed for the selection of criteria and for the assignment of the weight factor and scores. Four criteria from three categories such as technical, economic and environmental aspects were selected. Results from this study indicated that a distinguished difference in TSS and Turbidity between the dry and wet seasons and necessitates the installation of runoff control measures. It was found that the soil binders, sediment basin and diversion channel are the best alternatives for controlling erosion, sediment and drainage respectively. The sensitivity analysis showed very strong decision made by the experts for the technical, economic and environmental criteria.
{"title":"Multi Criteria Decision Making to Optimize the Best Runoff Control Measure Contributing to Haditha Dam Reservoir","authors":"I. Al-Ani, Hayder A. Al-Thamery, W. Mohtar","doi":"10.24086/aces2020/paper.217","DOIUrl":"https://doi.org/10.24086/aces2020/paper.217","url":null,"abstract":"In Iraq, the two dominating surface water sources are Tigris and Euphrates Rivers in which some dams constructed on both of them forming reservoirs. Haditha Dam reservoir is one of the most essential sources of drinking, irrigation, flood control and hydropower generation in Anbar State, Western Part of Iraq. Besides, the reservoir is a unique habitat with a wide spectrum of biodiversity. The objective of this study is to investigate and monitor the water quality in Haditha Dam reservoir and introduce the Multi Criteria Analysis (MCA) to highlight the best runoff control measure depending on selected criteria and criteria weights. Experts were interviewed for the selection of criteria and for the assignment of the weight factor and scores. Four criteria from three categories such as technical, economic and environmental aspects were selected. Results from this study indicated that a distinguished difference in TSS and Turbidity between the dry and wet seasons and necessitates the installation of runoff control measures. It was found that the soil binders, sediment basin and diversion channel are the best alternatives for controlling erosion, sediment and drainage respectively. The sensitivity analysis showed very strong decision made by the experts for the technical, economic and environmental criteria.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76958173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.223
Emanuele Morezzi, Haji Ismail
Although Ankara gained international attention mainly after its declaration as Capital of the Turkish Republic in 1923, the city hosts many buildings and monuments from different historical eras. The remains of Roman, Byzantine, Seljuk and Ottoman Empires discovered in the center of the city, clearly bear witness to the rich and diverse heritage of the capital. However, this heritage appears as less documented, studied and even not properly conserved. The citadel of Ankara, which dominates the narrow streets of the old city has withstood its long history very well and today houses a small neighborhood made up of valuable Ottoman wooden buildings. The link to the Roman and Medieval periods is still tangible. The Roman theatre remains at the foot of the hill are still observable, while the stone columns and beams used in the construction of the walls in a later era. The aim of this paper is to document and present the different historical eras of the castle, focusing on the remains of the medieval era. Analyzing the key features of the castle and the previous intervention on it will support the identification of the potentials of the site. Finally, recommendations for future work of architectural preservation will be elaborated on the basis of national and international conservation guidelines.
{"title":"The Hidden Heritage of Ankara Citadel: an Ambigous Future between Conservation and Transformation","authors":"Emanuele Morezzi, Haji Ismail","doi":"10.24086/aces2020/paper.223","DOIUrl":"https://doi.org/10.24086/aces2020/paper.223","url":null,"abstract":"Although Ankara gained international attention mainly after its declaration as Capital of the Turkish Republic in 1923, the city hosts many buildings and monuments from different historical eras. The remains of Roman, Byzantine, Seljuk and Ottoman Empires discovered in the center of the city, clearly bear witness to the rich and diverse heritage of the capital. However, this heritage appears as less documented, studied and even not properly conserved. The citadel of Ankara, which dominates the narrow streets of the old city has withstood its long history very well and today houses a small neighborhood made up of valuable Ottoman wooden buildings. The link to the Roman and Medieval periods is still tangible. The Roman theatre remains at the foot of the hill are still observable, while the stone columns and beams used in the construction of the walls in a later era. The aim of this paper is to document and present the different historical eras of the castle, focusing on the remains of the medieval era. Analyzing the key features of the castle and the previous intervention on it will support the identification of the potentials of the site. Finally, recommendations for future work of architectural preservation will be elaborated on the basis of national and international conservation guidelines.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79071134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.219
Zainab Abdul Zahra, M. Ahmed, I. Alani
Soft clay is a natural soil that spreads in the south of Iraq and many countries in the world. It is a problematic soil causing trouble for the structures built on it because of, high water content, low shear strength, and high compressibility. This work investigated the geotechnical behavior of soft clay by using mix of Metakaolin (M) and Sugarcane Straw Ash in air (SCSAA).The experimental work contains the following tests: chemical tests, physical tests, Compaction tests and shear test. These tests were carried out on soil samples prepared from soft soil; the replacement materials by weight of dry unit weight for different percentages of M (4%, 6%, 8%, 10%) mix with different percentages of SCSAA (4%, 6%, 8%, 10%). The tests results showed that the best percentage for the plasticity test was M1B4. Also,the percentage which gave the best value for undrained shear strength test was M4B4 (135).Finally, the treatment soil is good sub grade materials and also can be used in highway sub-base material.
{"title":"Stabilization of Clayey Soil by Using Metakaolin and Sugarcane Ash","authors":"Zainab Abdul Zahra, M. Ahmed, I. Alani","doi":"10.24086/aces2020/paper.219","DOIUrl":"https://doi.org/10.24086/aces2020/paper.219","url":null,"abstract":"Soft clay is a natural soil that spreads in the south of Iraq and many countries in the world. It is a problematic soil causing trouble for the structures built on it because of, high water content, low shear strength, and high compressibility. This work investigated the geotechnical behavior of soft clay by using mix of Metakaolin (M) and Sugarcane Straw Ash in air (SCSAA).The experimental work contains the following tests: chemical tests, physical tests, Compaction tests and shear test. These tests were carried out on soil samples prepared from soft soil; the replacement materials by weight of dry unit weight for different percentages of M (4%, 6%, 8%, 10%) mix with different percentages of SCSAA (4%, 6%, 8%, 10%). The tests results showed that the best percentage for the plasticity test was M1B4. Also,the percentage which gave the best value for undrained shear strength test was M4B4 (135).Finally, the treatment soil is good sub grade materials and also can be used in highway sub-base material.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"01 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86260971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.242
A. Abdulmawjoud, Abdulkhalik A. Al-Taei
In this study, ten pedestrian crossing spots located in Dohuk City suburban area were selected to make analysis and evaluation to the behavior of the people crossing the main streets, and walking on sidewalks according to their genders. Data was collected using double video cameras fixed on selected points to observe pedestrian movements along crossings and sidewalks, their interaction with drivers, and vehicles conflicting them. Data compiled was classified and presented to measure numbers of moving vehicles, people, vehicle gaps, space, pedestrian unit flow, speeds of both pedestrians and vehicles passing the crossing lines on suburban midblock. Data was presented using Dohuk City GIS up-to-date map taken from the city Municipality Directorate. Data analysis was implemented, and different empirical models were chosen to study the different interactions and effects of human, geometric, and vehicular traffic parameters on the behavior of pedestrians crossing, and walking on crosswalks and sidewalks respectively. Results show that in crosswalks, pedestrian flow with their speeds were polynomial in nature, while unit flow and speed relationships with density were linearly correlated. The relation between unit flow and their speed (for both male and female) on suburban sidewalks is Polynomial 2nd degree, and the optimum walking speed obtained is 1.16 and 1.0 m/sec for male and female respectively, with minimum walking speed for females are lower than male but the maximum walking speed is similar.
{"title":"Pedestrians Crossing Behavior Models on Midblock Suburban Area in Dohuk City","authors":"A. Abdulmawjoud, Abdulkhalik A. Al-Taei","doi":"10.24086/aces2020/paper.242","DOIUrl":"https://doi.org/10.24086/aces2020/paper.242","url":null,"abstract":"In this study, ten pedestrian crossing spots located in Dohuk City suburban area were selected to make analysis and evaluation to the behavior of the people crossing the main streets, and walking on sidewalks according to their genders. Data was collected using double video cameras fixed on selected points to observe pedestrian movements along crossings and sidewalks, their interaction with drivers, and vehicles conflicting them. Data compiled was classified and presented to measure numbers of moving vehicles, people, vehicle gaps, space, pedestrian unit flow, speeds of both pedestrians and vehicles passing the crossing lines on suburban midblock. Data was presented using Dohuk City GIS up-to-date map taken from the city Municipality Directorate. Data analysis was implemented, and different empirical models were chosen to study the different interactions and effects of human, geometric, and vehicular traffic parameters on the behavior of pedestrians crossing, and walking on crosswalks and sidewalks respectively. Results show that in crosswalks, pedestrian flow with their speeds were polynomial in nature, while unit flow and speed relationships with density were linearly correlated. The relation between unit flow and their speed (for both male and female) on suburban sidewalks is Polynomial 2nd degree, and the optimum walking speed obtained is 1.16 and 1.0 m/sec for male and female respectively, with minimum walking speed for females are lower than male but the maximum walking speed is similar.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77406809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.160
Farhan Ali
Thinking creatively, is a necessary condition of the Design process to transform ideas into novel solutions and break barriers to creativity. Although, there are many techniques and ways to stimulate creative thinking for designers, however, this research paper adopts SCAMPER; which is acronym of: Substitute- Combine-Adapt- Modify or Magnify-Put to another use-Eliminate-Reverse or Rearrange- to integrate the sustainability concepts within architectural design process. Many creative artifacts have been designed consciously or unconsciously adopting SCAMPER strategies such as rehabilitation and reuse projects to improve the functional performance or the aesthetic sense of an existing building for the better. SCAMPER is recognized as a divergent thinking tool are used during the initial ideation stage, aims to leave the usual way of thinking to generate a wide range of new ideas that will lead to new insights, original ideas, and creative solutions to problems. The research focuses on applying this method in the architectural design, which is rarely researched, through reviewing seven examples that have been designed consciously or unconsciously adopting SCAMPER mnemonic techniques. The paper aims to establish a starting point for further research to deepen it and study its potentials in solving architectural design problems.
{"title":"Adopting SCAMPER`S Strategies to Incorporate the Sustainability Concepts Within Architectural Design Process","authors":"Farhan Ali","doi":"10.24086/aces2020/paper.160","DOIUrl":"https://doi.org/10.24086/aces2020/paper.160","url":null,"abstract":"Thinking creatively, is a necessary condition of the Design process to transform ideas into novel solutions and break barriers to creativity. Although, there are many techniques and ways to stimulate creative thinking for designers, however, this research paper adopts SCAMPER; which is acronym of: Substitute- Combine-Adapt- Modify or Magnify-Put to another use-Eliminate-Reverse or Rearrange- to integrate the sustainability concepts within architectural design process. Many creative artifacts have been designed consciously or unconsciously adopting SCAMPER strategies such as rehabilitation and reuse projects to improve the functional performance or the aesthetic sense of an existing building for the better. SCAMPER is recognized as a divergent thinking tool are used during the initial ideation stage, aims to leave the usual way of thinking to generate a wide range of new ideas that will lead to new insights, original ideas, and creative solutions to problems. The research focuses on applying this method in the architectural design, which is rarely researched, through reviewing seven examples that have been designed consciously or unconsciously adopting SCAMPER mnemonic techniques. The paper aims to establish a starting point for further research to deepen it and study its potentials in solving architectural design problems.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86643150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.264
Omar M. Khalaf, Alhan Ibrahim, Norhaya Jaafar
This paper deals with the historical overview of the castles and forts and what are the rules and foundations on which they arose. Castles constitute tourist attractions at the global and local levels as well as studying the variables and elements of spatial organization, in addition to the concepts of urban development strategies for historical regions. Salah al-Din Citadel was elected in Cairo because of the historical and urban depth it carries today. By studying how it originated and what changes occurred on it after the explorations and excavations that are taking place (design and development strategies) and then the practical study and analysis of the results of the practical study (General conclusions). The aim of the study is to analyze the urban fabric of Salah al-Din Citadel and define indicators for the characteristics of spatial organization using the Geographic Information Systems Program (GIS) and (Space Syntax) analysis, as they have an impact on the development of city centers and their importance in shaping the urban body of the city in an attempt to reach the strategies for urban development and possible urbanization of historic city centers (especially the cities of the castles). From the review of studies that dealt with the study of the organizational characteristics of urban spaces, the research problem crystallized (The lack of a clear perception of studying the characteristics of the spatial organization of castles and their impact on the development of urban development strategies) and the research hypothesis was formulated with (The study of the characteristics of the spatial organization of castles affects the integration of the castle with its urban surroundings and its historical characteristics ). The research was based on the development of the elements of a theoretical framework on the characteristics of spatial organization and then applied in practice to the castle of Salah al-Din as a model.
{"title":"The Impact of The Characteristics of Spatial Organization of Historic Castles on The Urban Development Strategies for The Surrounding Areas “Salah Al-Din Citadel in Cairo as a case study”","authors":"Omar M. Khalaf, Alhan Ibrahim, Norhaya Jaafar","doi":"10.24086/aces2020/paper.264","DOIUrl":"https://doi.org/10.24086/aces2020/paper.264","url":null,"abstract":"This paper deals with the historical overview of the castles and forts and what are the rules and foundations on which they arose. Castles constitute tourist attractions at the global and local levels as well as studying the variables and elements of spatial organization, in addition to the concepts of urban development strategies for historical regions. Salah al-Din Citadel was elected in Cairo because of the historical and urban depth it carries today. By studying how it originated and what changes occurred on it after the explorations and excavations that are taking place (design and development strategies) and then the practical study and analysis of the results of the practical study (General conclusions). The aim of the study is to analyze the urban fabric of Salah al-Din Citadel and define indicators for the characteristics of spatial organization using the Geographic Information Systems Program (GIS) and (Space Syntax) analysis, as they have an impact on the development of city centers and their importance in shaping the urban body of the city in an attempt to reach the strategies for urban development and possible urbanization of historic city centers (especially the cities of the castles). From the review of studies that dealt with the study of the organizational characteristics of urban spaces, the research problem crystallized (The lack of a clear perception of studying the characteristics of the spatial organization of castles and their impact on the development of urban development strategies) and the research hypothesis was formulated with (The study of the characteristics of the spatial organization of castles affects the integration of the castle with its urban surroundings and its historical characteristics ). The research was based on the development of the elements of a theoretical framework on the characteristics of spatial organization and then applied in practice to the castle of Salah al-Din as a model.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74793600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.248
N. Ali, Salar S..Ahmed
Overhead or indirect cost considers as an element of the total project costs. The economic strength of any country depends on the activity of their construction industry. Overhead is an idiom refers to the costs required to operate a business, but it could not be directly attributed to any specific business activity, product, or service. And so on, overhead costs do not generate profits directly. Overhead is remainedimportant since it provides major support for the generation of profit-making value. The objective of this study is to explore common methods of measuring the overhead cost of the project in perspective of the contractors, as well as to show important types of overhead costs entire measuring cost. The research method has been conducted is a questionnaire concerning overhead cost in construction projects in Erbil Governorate. The questionnaire consists of two sections include, specify the method used by technical sector or company to measure overhead cost for the project, with choices, (i. Measuring in details ii. Measuring as a percentage, iii. Measuring as a lump sum, iv. Vary from one project to another, v. Other Method), and specify the overhead cost important, with indicating the choices of assessment. Thus; the total of 70 requests has been distributed to the respondents, 54 questioners responded. Excel program used to analyze information obtained through conducting statistical operations. Results showed that most frequent method used was measuring in details, with a percentage (42.6%). And the study shows that the most important overhead cost is material test costs which scored (RII=0.76), because of its great effect on the construction project processes generally and on overhead cost especially.
{"title":"Overhead Cost Assessment of Construction Projects in Erbil Governorate","authors":"N. Ali, Salar S..Ahmed","doi":"10.24086/aces2020/paper.248","DOIUrl":"https://doi.org/10.24086/aces2020/paper.248","url":null,"abstract":"Overhead or indirect cost considers as an element of the total project costs. The economic strength of any country depends on the activity of their construction industry. Overhead is an idiom refers to the costs required to operate a business, but it could not be directly attributed to any specific business activity, product, or service. And so on, overhead costs do not generate profits directly. Overhead is remainedimportant since it provides major support for the generation of profit-making value. The objective of this study is to explore common methods of measuring the overhead cost of the project in perspective of the contractors, as well as to show important types of overhead costs entire measuring cost. The research method has been conducted is a questionnaire concerning overhead cost in construction projects in Erbil Governorate. The questionnaire consists of two sections include, specify the method used by technical sector or company to measure overhead cost for the project, with choices, (i. Measuring in details ii. Measuring as a percentage, iii. Measuring as a lump sum, iv. Vary from one project to another, v. Other Method), and specify the overhead cost important, with indicating the choices of assessment. Thus; the total of 70 requests has been distributed to the respondents, 54 questioners responded. Excel program used to analyze information obtained through conducting statistical operations. Results showed that most frequent method used was measuring in details, with a percentage (42.6%). And the study shows that the most important overhead cost is material test costs which scored (RII=0.76), because of its great effect on the construction project processes generally and on overhead cost especially.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89397142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.220
Aamer Abbas, Y. Yaqoob, Ola Hussein, I. Al-Ani
This study presents experimentally the bond behavior of light-weight concrete specimens with grouted reinforcing bars in comparison with conventional concrete specimens. A total of (9) pull-out specimens were studied; (3) specimens of conventional concrete, (3) specimens of light-weight concrete, and other (3) specimens of grouted light-weight concrete. Two variables are adopted in this investigation: specimen width and type of concrete (conventional concrete, light-weight concrete and grouted light-weight concrete). The study contains a discussion of the general behavior of the specimens in addition to the study of the ultimate bond capacity, maximum bond stresses and the relationship between the stress and the slip for different pull-out specimens. Results show that bond strength is highest for the largest specimen size (bond strength of grouted light-weight concrete specimen with specimen width 400 mm is higher than that of the specimen with (200 mm) width by about (13.13%)). Also, bond strength is highest for the grouted light-weight concrete specimen (bond strength of grouted light-weight concrete specimen is higher than conventional concrete specimen by (11.11%)).
{"title":"Size Effect on the Bond Behavior of Grouted Reinforcing Bars Embedded in Light-weight Concrete","authors":"Aamer Abbas, Y. Yaqoob, Ola Hussein, I. Al-Ani","doi":"10.24086/aces2020/paper.220","DOIUrl":"https://doi.org/10.24086/aces2020/paper.220","url":null,"abstract":"This study presents experimentally the bond behavior of light-weight concrete specimens with grouted reinforcing bars in comparison with conventional concrete specimens. A total of (9) pull-out specimens were studied; (3) specimens of conventional concrete, (3) specimens of light-weight concrete, and other (3) specimens of grouted light-weight concrete. Two variables are adopted in this investigation: specimen width and type of concrete (conventional concrete, light-weight concrete and grouted light-weight concrete). The study contains a discussion of the general behavior of the specimens in addition to the study of the ultimate bond capacity, maximum bond stresses and the relationship between the stress and the slip for different pull-out specimens. Results show that bond strength is highest for the largest specimen size (bond strength of grouted light-weight concrete specimen with specimen width 400 mm is higher than that of the specimen with (200 mm) width by about (13.13%)). Also, bond strength is highest for the grouted light-weight concrete specimen (bond strength of grouted light-weight concrete specimen is higher than conventional concrete specimen by (11.11%)).","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"138 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86590402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.24086/aces2020/paper.222
Hayder Hassan, H. Muteb, Haider M. Al-Baghdadi
In this study, a novel test technique is used to experimentally study the behavior and performance of the socket joint used to stabilize the precast columns embedded in a foundation that is subject to lateral loading. The test program included the testing of five test specimens, which represent the condition of the prefabricated concrete columns, which are embedded in the foundation. five specimens were divided into two groups based on the embedded length. Group one consists of two samples with a smooth interface and different embedded lengths. Group two consists of three samples with constant embedding length, two of them with a smooth interface and the other with a rough interface. Self-compacting mortar (SCM) was used as the adhesive material to fill the gap between the concrete column and the base for the samples of the first group, while the non-shrinking mortar and the self-compacting mortar (SCM) were used as adhesive material. Fill the gap between the Concrete column and the base in the second group. The practical results showed the possibility to use the developed test method as an alternative test method for comparing and representing a relationship between the different cases of socket connections. It has also been found that the roughness of the interface increases the bearing capacity for the embedded length, which corresponds to and is less than the depth of the concrete column, otherwise it is not required.
{"title":"Interaction between Precast Concrete Columns with Socket Foundations Using Different Bonding Interfaces","authors":"Hayder Hassan, H. Muteb, Haider M. Al-Baghdadi","doi":"10.24086/aces2020/paper.222","DOIUrl":"https://doi.org/10.24086/aces2020/paper.222","url":null,"abstract":"In this study, a novel test technique is used to experimentally study the behavior and performance of the socket joint used to stabilize the precast columns embedded in a foundation that is subject to lateral loading. The test program included the testing of five test specimens, which represent the condition of the prefabricated concrete columns, which are embedded in the foundation. five specimens were divided into two groups based on the embedded length. Group one consists of two samples with a smooth interface and different embedded lengths. Group two consists of three samples with constant embedding length, two of them with a smooth interface and the other with a rough interface. Self-compacting mortar (SCM) was used as the adhesive material to fill the gap between the concrete column and the base for the samples of the first group, while the non-shrinking mortar and the self-compacting mortar (SCM) were used as adhesive material. Fill the gap between the Concrete column and the base in the second group. The practical results showed the possibility to use the developed test method as an alternative test method for comparing and representing a relationship between the different cases of socket connections. It has also been found that the roughness of the interface increases the bearing capacity for the embedded length, which corresponds to and is less than the depth of the concrete column, otherwise it is not required.","PeriodicalId":85616,"journal":{"name":"The ACES bulletin. Association for Comparative Economic Studies (U.S.)","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84586256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：