Construction Engineering and Management Commons^™

Experimental Investigation On Internal Erosion Of Gap-Graded Sands And Its Improvement For Internal Erosion Control, Kasidit Chawanaputhron

Chulalongkorn University Theses and Dissertations (Chula ETD)

Internal erosion often occurs in earthen water-retaining structures such as embankment dams, levees, and dikes. This erosion is caused by seepage flows through soils or other porous materials containing a mixture of coarse and fine particles. The internal erosion process, also known as suffusion, involves the transport of fine particles carried away from the soil structure by seepage. Internal erosion can weaken the soil, create voids or cavities, and ultimately lead to structural collapse, posing a significant risk to earthen water-retaining structures. This research investigates the internal erosion behavior of gap-graded sands with various fine fraction contents through a series …

Modeling Of Predictive Financial Performance Of Ppp Highways Using Bayesian Network (Bn), David Ty

Chulalongkorn University Theses and Dissertations (Chula ETD)

Public-private partnerships (PPPs) are contractual agreements between the public and the private sector to deliver economic and social infrastructure. The PPP environment is inherently complex and dynamic, often involving long-term contracts and significant financial performance risks. While many studies examine the construction and operation phases separately, this study focuses on predicting the financial performance of PPP highways by integrating the risks and factors in both phases. It also considers country risk factors, such as income level, GDP per capita, and economic growth, to assess their impact on PPP highway projects. Data on risks and risk factors were gathered from sources …

A Bim-Enabled Materials Flow Tracking Platform For The Construction Supply Chains Of Modular Steel Projects, Thandar Lwin

Chulalongkorn University Theses and Dissertations (Chula ETD)

Off-site steel construction, or modular construction, involves building components in a factory and then bringing them to the construction site. This method speeds up construction, reduces waste, and improves quality. The movement of materials in this process is complicated, including ordering raw materials, making steel parts, transporting modules, and installing them on site. It is important to track these materials to ensure timely delivery, control costs, and avoid shortages of excess materials. In this paper, a BIM-enabled digital platform is developed to monitor and track the flow of construction materials in the supply chain of modular steel projects. This platform …

การศึกษาปัจจัยเสี่ยงที่ส่งผลกระทบต่อผลิตภาพและระยะเวลาในการก่อสร้างโดยวิธีพลวัตระบบและการจัดการป้อนกลับ กรณีศึกษาโครงการรถไฟฟ้ารางเดี่ยว, ภัณฑิรา วาณิชย์เจริญ

Chulalongkorn University Theses and Dissertations (Chula ETD)

การก่อสร้างโครงการรถไฟฟ้าที่ผ่านมามักประสบปัญหาความล่าช้า ส่งผลกระทบต่อผู้รับจ้าง ประชาชนที่สัญจร และผู้พักอาศัยใกล้โครงการ ปัจจัยเสี่ยงที่ส่งผลต่อผลิตภาพและระยะเวลาก่อสร้างรถไฟฟ้ารางเดี่ยวมีลักษณะคล้ายโครงสร้างพื้นฐานด้านการขนส่งอื่นๆ โดยที่สภาพแวดล้อมของโครงการก่อสร้างมีความเป็นพลวัตค่อนข้างสูง (Highly dynamic environment) เนื่องจากการเปลี่ยนแปลงของสภาพพื้นที่และปัจจัยเสี่ยงในช่วงการก่อสร้างโครงการ งานวิจัยนี้ศึกษาการประยุกต์ใช้ตัวแบบพลวัตระบบ (System dynamics) และการจัดการป้อนกลับ (Management feedback) หรือการแทรกแซงของผู้บริหาร (Management intervention) ในการบริหารความเสี่ยงที่ส่งผลต่อผลิตภาพ (Productivity) และระยะเวลา (Time) ของกิจกรรมงานก่อสร้างรถไฟฟ้ารางเดี่ยว (Straddle Monorail) โดยใช้ข้อมูลจากการสัมภาษณ์ผู้เกี่ยวข้องในโครงการและการสังเกตจากพื้นที่ปฏิบัติงานจริงในโครงการรถไฟฟ้ารางเดี่ยวสายสีชมพู ช่วงแคราย-มีนบุรี รวมถึงส่วนต่อขยายเมืองทองธานี ตัวแบบที่พัฒนาขึ้นใช้โปรแกรม VenSim PLE เพื่อวิเคราะห์ระยะเวลาการดำเนินการก่อสร้างของกิจกรรมหลักในเส้นทางวิ่ง พร้อมทั้งจัดลำดับความเสี่ยงจากการวิเคราะห์ความอ่อนไหว (Sensitivity analysis) นอกจากนี้ ยังเสนอค่าเผื่อเวลาในการทำงานที่รวมปัจจัยเสี่ยง (Time risk factor) ซึ่งมีค่าประมาณ 1.42 โดยค่าที่ได้สามารถนำไปประกอบการจัดการความเสี่ยงของโครงการที่มีบริบทการก่อสร้างคล้ายคลึงกัน หรือเพื่อการวางแผนด้านเวลาที่สอดคล้องกับปัจจัยเสี่ยงของโครงการและความมีสภาพแวดล้อมของโครงการก่อสร้างแบบมีความเป็นพลวัติสูง

Enhancing Comfort And Sustainability: Analyzing The Impact Of Natural Ventilation And Eco-Friendly Materials On Indoor Temperature Reduction, Hyo Won Lee

UNF Graduate Theses and Dissertations

As the world grapples with issues such as increasing energy consumption, climate change, and environmental degradation, the need for sustainable solutions is becoming more and more urgent. In this context, passive cooling has emerged as one of the promising approaches to achieve energy efficiency in various sectors. This research study the basic concept of passive cooling to new buildings to identify synergies in energy savings when reducing temperature inside buildings and applying eco-friendly materials, and to explore potential benefits for promoting sustainable development. By analyzing existing research, case studies, and technological advancements, this study seeks to highlight the feasibility and …

Polymeric Spray-Applied Pipe Lining Selection, Evaluation And System Design, Sanaz Ghalambor

Civil Engineering Dissertations - Archive

POLYMERIC SPRAY-APPLIED PIPE LINING SELECTION, EVALUATION

AND SYSTEM DESIGN

Sanaz Ghalambor, PhD

The University of Texas at Arlington, 2024

Supervising Professor: Dr. Mohammad Najafi

Numerous pipes are considerably aged, and most are no longer functional. Immediate attention is required to either restore or replace these pipelines. To avoid digging up and replacing underground pipes, the Spray-Applied Pipe Lining (SAPL) rehabilitation technology, also known as Spray-In-Place-Pipe (SIPP) lining, can be used for pipe rehabilitation. This approach lowers expenses and downtime while preserving landscapes and structures and enhancing hydraulic characteristics. Although lining water pipes through spray application is the oldest pipeline rehabilitation …

Evaluation Of Air Emissions For Cured-In-Place Pipe Construction Method For Sewer Pipe Rehabilitation, Rasoul Adnan Abbas

Civil Engineering Dissertations - Archive

The aging underground pipelines in the United States, which include sewer and water supply systems, have exceeded their design lifespan and will have to be renewed or replaced to continue providing these vital services to communities. Two methods can be used to replace the pipes: open-cut and trenchless technologies. Trenchless methods offer several advantages in urban areas: a small work area, lower operational and maintenance costs, and fewer negative impacts on the surrounding communities. Among the trenchless options, the CIPP method has been chosen for this research since it minimizes surface disruption, making it particularly well-suited for densely populated areas …

Interacting Action Of Alkali-Silica Reaction And Chloride-Induced Steel Corrosion On The Reinforced Concrete Structures – A Critical Review, Williams Dunu

CSID Journal of Infrastructure Development

The degradation of reinforced concrete (RC) structures amidst the progression of corrosion within alkali-silica reaction (ASR)-affected structures is a complex phenomenon marked by diverse causal factors and repercussions. While the initiation phase of chloride-induced steel corrosion and ASR in RC structures has received extensive scrutiny, insufficient attention has been dedicated to comprehending the propagation phase (tp). Therefore, this study addresses this gap by centering its focus on the propagation phase, driven by the imperative need to formulate efficient and sustainable maintenance, repair, and management strategies for RC structures grappling with the concurrent impacts of degradation mechanisms such as ASR and …

The Impact Of Adopting Digital Twins In Urban Development, Mohammed Ali Berawi, Perdana Miraj, Mustika Sari

CSID Journal of Infrastructure Development

The construction industry, which plays a pivotal role in urban development, has undergone a significant transformation in recent years. This transformation is largely marked by the rise of digitalization, a phenomenon fundamentally altering how we design, construct, and operate our urban environments. At the forefront of this paradigm shift is the notion of Digital Twins (DT), which entails a dynamic and virtual representation of tangible assets. Urban development has witnessed a growing adoption of this innovative approach to improve cities' infrastructure planning, construction, and management. Digital Twin enables real-time simulation and monitoring, enhancing performance and more informed decision-making. Therefore, implementing …

Assessment Of Infrastructure Development Approach In Newly Created Districts In Zambia: Case Study, Chimanga Kabwe, Musonda Innocent, Franco Muleya

CSID Journal of Infrastructure Development

This article evaluates the infrastructure development plans in Zambia's newly established districts, primarily focusing on assessing their effectiveness. Infrastructure development encompasses various strategies, and this study investigates the factors influencing the selection of these strategies for implementing infrastructure projects in Zambia. Through structured interviews and questionnaires distributed to 500 respondents, the research highlights the critical role of community involvement. Communities play a pivotal role in identifying essential amenities, setting priorities for infrastructure construction, incorporating their ideas, and participating in the planning process for executing infrastructure projects. The analysis reveals that community members held varying perspectives on the significance of infrastructure …

Factors Influencing The Occurrence Of Rework In Terms Of Risk-Based Communication Management In Construction Projects, Virani Mayniana, Rossy Armyn Machfudiyanto

Smart City

Rework in a construction project is an unplanned and unwanted activity that requires an action to repeat part or all the work to meet project standards or requirements and, in its implementation, causes increased work, time, and costs. Based on previous studies that discuss the factors that cause rework, poor communication management or coordination between stakeholders is one of the causes of rework. Therefore, a literature study was conducted to identify project communication management risks that allow rework to occur and resulted in 54 communication management risk factors. Furthermore, the results of the literature study were validated by experts who …

Barriers To The Adoption Of Digitalization In The Construction Industry: Perspectives Of Owners, Consultants, And Contractors, Rawan Al-Omari, Ghaleb Sweis, Waleed Abu-Khader, Rateb Sweis

Civil Engineering Faculty Publications

Construction organizations are moving toward adopting digitalization in response to Industry 4.0. However, the slow adoption of digitalization has been observed. This study aimed to assess the level of digitalization adoption and evaluate the barriers to adopting digitalization in the Jordanian construction industry by all project parties in the public and private sectors. The study targets were achieved through a structured questionnaire using SPSS software for analysis through the following statistical tests: Normality test, Mann-Whitney U, Kruskal-Wallis H, and Exploratory Factor Analysis (EFA). Most respondents used software at the design stage, and less than half did not use any software …

Self-Consolidating Concrete Design For Drilled Shaft Structural Applications, Grady S. Caton

Graduate Theses and Dissertations

Self-consolidating concrete (SCC) is a relatively new concrete technology which allows the concrete to be placed without the need for manual or machine vibration. This innovation reduces labor costs, construction times, and can provide a smooth, finished surface. However, this technology is used in the United States primarily in the precast and prestressed concrete industry. The utility of SCC in structural applications, such as areas of dense reinforcement or locations where complex geometry makes consolidation impossible, is also advantageous. In this study, a series of SCC mixtures were developed both with and without fly ash replacement. These mixtures were then …

Comparing In-Situ Liquefaction Triggering Procedures For Sites In Arkansas, Sagar Barua

Graduate Theses and Dissertations

There currently exists a significant amount of uncertainty when designing piles for bridge foundations in liquefiable soil. Currently ARDOT engineers use a Standard Penetration Test (SPT) based liquefaction spreadsheet developed 10 years ago to evaluate liquefaction triggering. Since this spreadsheet was developed, updates to the liquefaction triggering procedures have been published making the spreadsheet out-of-date. Moreover, additional methods of liquefaction evaluation using cone penetration test (CPT) and shear wave velocity (Vs) provide added means of evaluating liquefaction potential. This thesis updates ARDOT's liquefaction triggering evaluation methodology with the newest procedures and incorporates additional empirical liquefaction hazard estimates such as the …

Evaluation Of The Long-Term Performance Of Ogfc In South Carolina, Rishiraj Brahmbhatt

All Theses

Since the 1970s, South Carolina has employed open graded friction courses (OGFC) on high-speed asphalt roadways to enhance wet weather safety. While these mixes have indeed enhanced safety, they still grapple with durability issues, particularly concerning raveling. This research aimed to assess the prolonged performance of OGFC pavements in South Carolina, with a specific emphasis on isolated raveling occurrences. In 2012, the South Carolina Department of Transportation (SCDOT), constructed the first Warm Mix OGFC test section in South Carolina on I-20 Eastbound in Kershaw County, spanning 3.9 miles, using the Evotherm additive and excluding fibers. Following the success of this …

Development Of Scope Of Services For Procurement Of Professional Consultant Services On Transportation Projects – A Study Of South Carolina Department Of Transportation, Ajay Jadhav

All Dissertations

Project Scoping Process (PSP) is one of the significant steps that starts at the very beginning of the project life cycle. During project initiation phase, project scoping is kicked off which includes documenting a list of project-specific goals, deliverables, tasks, costs, and deadlines. The scoping phase duration depends on the project complexity and involves various stakeholders, establishing team, confirming the project purpose and need, initiating the environmental revie process, determining the level of environmental documentation and permit requirements, conducting survey, identifying project risks and tools to mitigate them, and evaluating public involvement strategies. A well-defined PSP is therefore essential for …

2nd Annual Girls Build Summer Academy: Logistics And Scheduling, Matteo Cade Cuccaro

Construction Management

This paper discusses the logistics and scheduling involved for Cal Poly construction management department’s second annual Girls Build Summer Academy. The week-long academy was hosted to introduce construction related activities to 19 high school-aged girls so they could learn more about the careers available within the architecture, engineering, and construction industry, while learning skills to build individual and team projects. To achieve this goal, a full schedule was developed for each day of the camp, allowing for a variety of activities, including listening to guest speakers, completing building projects, and training to safely use tools. There were many challenges that …

2nd Annual Girls Build Summer Academy: Apprentice Ii Service Project, Angeline Witt

Construction Management

Cal Poly’s construction management department hosted the second annual Girls Build Summer Academy in July 2023. This paper highlights the service work project that the three returning academy participants completed during the week-long day camp. The academy’s goal was to provide high school-aged girls the opportunity to learn about the various career paths in the construction industry while emphasizing skilled trade opportunities including concrete, framing, drywall, electrical, and equipment operators. The girls worked to enrich their construction knowledge and grow their skills with hands-on building activities. By the end of the week, each girl had gained the skills and confidence …

Vegetation And Its Effectiveness In Replacing Traditional Cooling Systems, Bryce Isaiah Trump

Construction Management

This project aimed to analyze if vegetation is effective in replacing traditional cooling systems, when utilized as green roofs and walls. It serves to provide information to the construction industry, designers, architects, and homeowners. Information gathered through a field experiment will be used to give quantitative data on if vegetation is effective and practical in replacing traditional cooling systems in buildings and homes. The basis for the idea of this project stems from two main courses in the Construction Management program, those courses being Principles of Environmental Design, and Sustainability and the Built Environment. The stated courses introduce the idea …

San Luis Obispo Railroad Museum Accessibility Ramp, Noah Atticus Callahan

Construction Management

The San Luis Obispo’s Railroad Museum is a local organization that aims to preserve the history of the Southern Pacific Railroad and educate the community. The mission of this organization is to collect and display various historic artifacts for the public to see. This project serves to aid in the development of a 1923 boxcar into a future exhibit for the museum by creating a ramp that bridges the platform of the station to the boxcar. The ramp was constructed out of pressure treated lumber, angle iron to bind the lumber together, and hinges to allow it to fold. Both …