Civil Engineering Commons^™

Experimental Study On Fiber Reinforced Concrete (Frc) Beams With Splices, Mohie Eldin Salah Shoukry, Ahmed Mokhtar Tarabia, Nabil Youssef Nabil

Journal of Engineering Research

This paper presents the results of an experimental study involving nine simply supported beams featuring lap-spliced bars within the constant moment zone. All beams shared identical reinforcement details, including three longitudinal reinforcement bars (12 mm diameter) and two top reinforcement bars (8 mm diameter) for shear stirrup hanging. The lap-spliced specimens were created with a splice length of thirty times the bar diameter (360 mm). The study focused on two key parameters: the fiber content of hooked-end steel fibers used in the concrete mix and the presence of stirrups in the lap-splice region. The hooked-end steel fiber used was with …

Innovation In Egyptian Linear Construction Projects: Enablers, Obstacles, And Suggested Improvements, Saeed Ahmed Elshinawy, Mohammed Elsayed Elsharkawy Assis. Prof., Adel Ibrahim Eldosouky Emeritus Professor

Journal of Engineering Research

Abstract- This research aims to investigate the obstacles, enablers, and suggested improvements for innovation in the Egyptian linear construction projects. The study is motivated by the need to understand the dynamics of innovation within these projects and identify practical approaches to overcome obstacles to innovation.

Owners, contractors, and consultants involved in linear construction projects constituted the target population of the study. A structured questionnaire was used to collect data from a representative sample of 70 participants.

It is found that time and budget constraints, along with traditional tendering and procurement methods were significant obstacles to innovation, while technological and technical …

Modelling Techniques For Slab Track Systems, Mohamed Hafez Fahmy Aly, Islam Mahmoud Abou El-Naga, Ahmed Abdul Hay Soliman, Muhammad Ahmad Diab

Journal of Engineering Research

The railway slab track has replaced the ballast material in the classical ballasted track with reinforced concrete slab or asphalt layer to cope up with the increasing axle loads, train high-speeds, and to reduce overall maintenance cost. This paper aims to investigate the linear and nonlinear behavior of the most common slab track systems (BÖGL, Shinkansen, and RHEDA 2000) using American (AREMA) loads for different soil types to recommend the most suitable analysis type for each component of the slab track systems. Slab track Finite Element models have been built using Midas GTS NX software. The geometric model for each …

A 4-Node Shell Finite Element Based On Assumed Bending And Membrane Strains For Static Analysis Of Plates And Shells, Sifeddine Abderrahmani

Emirates Journal for Engineering Research

In this paper the development of a new rectangular flat shell element is proposed. This element is called SBRPK-SBRIE. This element is used in the numerical analysis of thin structures based on the strain approach with linear elastic behavior. Combining bending and membrane elements yields the proposed element.The strain-based rectangular finite element for the thin plate bending element denoted SBRPK, and the strain-based membrane element denoted SBRIE. Several numerical examples have been conducted to assess the accuracy and reliability of the developed element compared with the theoretical results and other finite elements. Obtained results show its good performance compared to …

Assessment Of Walls With Phase Change Materials Through Synergistic And Performance Measures Using Experimental And Simulated Test Houses, Cory J. Enfield

ELAIA

Current research on living and working spaces continues to strive to identify the most energy-efficient methods for heating and cooling, and many novel technologies have emerged from the research. One of the most promising, and the topic of this quantitative analysis, is the retrofitting of phase change materials (PCMs) into the walls of structures. Research has shown positive results, such as a reduced transfer of heat through walls, when PCMs are retrofitted into wall construction. The present research takes previously gathered data from test houses, built with typical North American framing, and simulates an additional fourteen test houses from the …

Building Services Engineering March/April 2024

Building Services Engineering

No abstract provided.

Of Towers And Philosophy: How Interdisciplinarity Nurtures And Expands Capacity, Mario Calabretta

NEXUS: The Liberty Journal of Interdisciplinary Studies

No abstract provided.

Modeling Of Equilibrium Shoreline Of Headland Bay Beaches, Mohamed Ahmed Elmarakby, Ahmed Elshinnawy, Bakenaz A. Zeidan

Journal of Engineering Research

Engineering tools for predicting a long-term reaction of beaches include equilibrium beach formulations. They are used to assess how human interference (protection works, breakwaters, ports etc.) has affected the shoreline reaction since they Specify the final orientation of a beach on a time scale of years. One of the equations for determining the Static Equilibrium Planform (SEP) of Headland Bay Beaches (HBBs) that can be found in the literature is the Parabolic Bay Shape Equation (PBSE). The placement of the down-coast control point (P_o), which is the down drift limit from which the PBSE is applied, has a …

Ground Settlements Due To Quad Water Tunnel Construction, Marawan M. Shahien M. Shahein, Ehab Ahmed Khalil E.Khalil, Ahmed F. Abd El Kader A. Abd El Kader, Mahmoud Abdulnasser Hodeab M.A.Nasser

Journal of Engineering Research

Construction of a tunnel under an existing one poses significant geotechnical challenges due to the potential surface and subsurface settlements caused by the new tunnel construction and its impact on the existing tunnel, adjacent buildings, and facilities. The complexity intensifies when multiple adjacent tunnels need to be constructed, such as twin, triplet, quad, or more, as the construction of each tunnel affects the others. This interaction depends on various factors, including the horizontal distance between each tunnel (pillar width), the tunnel's depth and vertical position relative to the existing tunnel (pillar depth), and their influence on surface and subsurface settlement …

Exemplary Studies On The Torsional Response Of Single Pile In Contaminated Sand, Ahmed Nasr, Waseim Azzam, Nada Ramadan

Journal of Engineering Research

Deep foundations, including piles, are employed in types of coastal soil because the soil in such regions may be subjected to several variables that alter the engineering features of the soil, like oil contamination. Together with the loads caused by supported superstructures, the pile foundations may also be susceptible to torsional loads from eccentric, horizontal loads brought on by winds, earthquakes, ship accidents, and waves. Tests have been conducted in this laboratory investigation to examine the behavior of piles under torsional load (T) in polluted sandy soil. Also, tests investigated how the Lp/Dp ratio affected the piles' bearing capacity. Details …

Sustainable Infrastructure Development In The Ikn Region (Nusantara Capital): Simulation Of The Smart Self-Sustaining Urban Center Area Development, Naufal Budi Laksono, Yusuf Latief

Smart City

Embarking on the quest for a sustainable urban future, this research immerses itself in the vibrant landscape of "Sustainable Infrastructure Development in the IKN Region (Nusantara Capital)." This study investigates the financial viability and economic attractiveness of the Five City project, focusing on efficient infrastructure management for sustainable settlement development. The core facility comprises four vertical residential towers with supporting amenities. The research aims to evaluate the project''s feasibility over a 25-year investment period through comprehensive financial analyses.The research employs a structured approach, encompassing regulatory analysis, stakeholder identification, financial capability analysis, and risk management. Parameters such as Net Present Value …

The Interpretative Structural Modeling For Stakeholder Involvement To Reduce Slum Settlements, Bich Hanes Bich, Ayomi Dita Rarasati

Smart City

The array of problems originating from slum settlements not only results in unwholesome environment, unlawful land utilization, and various internal challenges within the vicinity but also impacts the surrounding regions and the overall urban infrastructure network. In pursuit of Indonesia's 2045 Vision, which emphasizes on "equitable and integrated infrastructure development", the zero slums constitutes a pivotal component of the Ministry of Public Works and Public Housing's overarching vision. Nonetheless, a disparity has been identified in addressing slum settlements in West Kalimantan, hindering the achievement of this objective. This research aims to identify the stakeholders and the priority factors in determining …

Project Stakeholder Analysis In Temadore Bridge Construction Development, Hud Rafsanjani, Ayomi Dita Rarasati

Smart City

The construction of bridge is important due to its ability to link communities through land-road connection, thereby saving time and increasing productivity of those living in these areas. Therefore, this research evaluated the Temadore bridge, built to link Ternate City, Maitara land and Tidore City by road to enhance movement and reduce disparities in assessing both areas. Data were collected using the Interpretative Structural Modeling (ISM) which searched for and identified several variables according to the dependence power and driving power. The result showed that construction of bridge increased the movement of community activities and productivity, thereby leading to growth.

Building Services Engineering January/February 2024

Building Services Engineering

No abstract provided.

Estimation Of Origin-Destination Matrix Using Open-Source Applications Based On Traffic Counts For Mansoura City In Egypt, Ahmed N. Awaad, Sherif M. El-Badawy, Elsayed Abd-Elazem Shwaly, Usama Elrawy Shahdah

Mansoura Engineering Journal

Origin-destination matrices (ODMs) are essential to transportation planning but estimating them can be difficult and expensive. This study presents a framework for estimating ODMs using traffic flow counts using open-source tools. The framework was applied to a dataset from the city of Mansoura in Egypt. The Flowrouter algorithm, which is part of the SUMO microscopic traffic simulation model, was used for routing traffic between traffic flow counting locations. Additionally, the “Implausible Routes” algorithm was used to eliminate unrealistic routes from the generated solution. The results show that the ODM obtained is a reasonable representation of the demand between the different …

A Spatiotemporal Analysis Of Organic Pollutants Contamination In Ciliwung River, Indonesia, Mochamad Adhiraga Pratama, Dorothy Marsha Constantine

CSID Journal of Infrastructure Development

Ciliwung River is one of many rivers on Java Island which is polluted by waste from domestic, commercial/industrial, and agricultural activities. The rapid population growth caused changes in land use. Along with population growth and the development of human activities in various sectors, river pollution became a serious problem for humans. The purpose of this study is to conduct a spatiotemporal analysis of the concentration of pollutant in Ciliwung River and its correlation with the trend of land use changes to determine the factors that dominantly influence river pollution. The analysis was carried out on the parameters of organic pollutants …

A Study On The Preferred Teleworking Policy By The Private Sector And Its Implication To The Demand On Transport Infrastructure (Case Study: Greater Jakarta Area), Alvinsyah Alvinsyah, Edy Hadian, Wahyu Aji Syahputra

CSID Journal of Infrastructure Development

This study examines the implementation of a teleworking policy with a work-from-home (WFH) scheme from a private company perspective and its implications on the Greater Jakarta’s proposed urban rail network’s carrying capacity. Using descriptive and inferential statistical analyses, a representative percentage of employees capable of working from home was determined. This figure, found to be sixty percent, was then employed in a macro transport model simulation to assess its impact on urban rail network demand. The results of the statistical analysis indicate that sixty percent of the company's workforce can still permitted to work remotely. The model simulation conducted indicates …

The Presence Of Memory Through Materiality, Spatial Configuration, And Collective As A System For Sustainable High-Rise Residence, Arnis Rochma Harani, Brigitta E. Mekarwangi, Muhamad I. Hasan

CSID Journal of Infrastructure Development

This paper aims to explore the multifaceted elements involved in the design of residential buildings, encompassing both landed and high-rise structures, with a particular focus on memory. The ever-increasing urban population density has prompted a shift towards high-rise living, leading many individuals to transition from traditional landed homes. However, in urban environments where closely-knit communities have been the norm, high-rise living is often perceived as a potential obstacle to fostering social interactions akin to those experienced in landed residential areas. This challenge presents a compelling opportunity for designers to create vertical residential spaces that maintain the vibrant communal ambiance found …

Recommendations On Flood Management At Cengkareng Drain Estuary In Enhancing Estuary Resilience To Compound Hazard, Athena Hastomo, Evi Anggraheni, Adi Prasetyo, Dwita Sutjiningsih

CSID Journal of Infrastructure Development

Jakarta's coastal region, characterized by dense settlements and industrial zones, faces significant flood risks due to land subsidence and rising sea levels, exacerbated by human activities and climate change. This study evaluates the effectiveness of the National Capital Integrated Coastal Development (NCICD) project, which proposes embankments along Jakarta's coast for enhanced flood resilience. Focusing on the Cengkareng Drain estuary, two-dimensional HEC-RAS simulations were employed. This study incorporates various factors such as precipitation, tides, waves, rising sea levels, and land subsidence to model extreme flood scenarios. The analysis reveals key strategies to improve flood management. Firstly, introducing new pumping stations and …

Impact Analysis Of Land Use Changes On Inundation Map In The Ciliwung River Watershed, Muhammad Raihan Arkan Abiyan Zein, Evi Anggraheni, Dadang Muhamad Yahya

CSID Journal of Infrastructure Development

The rapid population growth in Indonesia’s DKI Jakarta Province has escalated the demand for housing, increasing built-up land at the expense of green open spaces, known as Ruang Terbuka Hijau (RTH). This shift has significantly reduced the land available for water infiltration, resulting in increased runoff and flow discharge, particularly in the Ciliwung River Watershed. This research aims to map inundation in the Ciliwung River Watershed, which is attributable to land cover changes from 1990 to 2022. The study examines flood flow discharge and inundation patterns by utilizing HEC-HMS 4.10 for hydrological modeling and HEC-RAS 6.1 for 1D and 2D …

Preliminary Water Quality Assessment Using Canadian Water Quality Index Of Ras El-Ain Ponds, South Lebanon, Hussien Ali Fayad, Safaa Baydoun, Mohamad Reda Soliman

BAU Journal - Science and Technology

Water quality deterioration in Lebanon is a pressing national issue and there is a high need for continuous water quality assessment and monitoring of water bodies in the country. This study aims at assessing water quality of Ras El-Ain Ponds, a major natural water resource for domestic use in Tyre district, South Lebanon by using the widely applied Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI). Sampling was conducted during February-March, 2023 and physiochemical and microbiological water quality parameters were determined using standardized methods. Assessed parameters in our study are temperature, turbidity, electrical conductivity (EC), total …

Behavior Of Concrete Mixes Using Recycled Aggregate Confined With Steel Sections, Latifa Sobhi Kassem, Adnan El-Masri, Nour Webhi

BAU Journal - Science and Technology

Recycled Concrete Aggregate (RAC) is a form of recycled concrete that has been studied for green building for the past 50 years. It can be used to create strong structures, such as seismic retrofitting of earthquake-prone structures. Studies have attempted to experimentally study the effect of using recycled aggregate in concrete, but the literature lacks the use of recycled concrete aggregate rapped with steel rings. This study examines the behavior of circular concrete columns with different percentages of recycled aggregate. It examines the behavior of a column with different percentages of recycled aggregate, one without jacketing, one with partial jacketing, …

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 …

Isolation And Characterization Of Caffeine-Degrading Bacteria From Coffee Plantation Areas In Malaysia, Elvina Clarie Dullah, Mohd Fazli Farida Asras

Makara Journal of Technology

Decaffeination by microbial degradation is currently the most optimal and low-cost approach, involving only microbial cells and/or their enzymes. The bacterium was characterized using a series of biochemical tests. Positive results were obtained from carbohydrate fermentation, citrate utilization, and catalase tests, while negative results were obtained from Voges-Proskauer (VP) and indole tests. Three different caffeine concentrations of 0.25%, 0.4%, and 2% were tested and measured through Gas Chromatography-Mass Spectrophotometry (GC-MS) analysis. The highest caffeine reduction (89.25%) was found when 0.25% caffeine was used in the media. Only a small amount of caffeine was reduced to 0.4% and 2%, with 34.78% …

Effect Of Lime Content, Curing Temperature, And Aging Condition On Low-Alkaline Concrete, Mahdi Parsa Pour, Reza Shaban Sharghi, Faezeh Nejati, Elmira Khaksar Najafi

Makara Journal of Technology

This study determines how curing temperatures, aging condition, and hydrated lime contents affect the unconfined compressive strength (UCS), modulus of elasticity, and workability of low-alkaline concrete. Samples were prepared in two different groups to determine the optimum hydrated lime content and aging conditions to assess the mutual effect of NaOH molarity and curing temperature, that is, 70 °C for 48 h or room temperature, on samples with and without lime. The results showed that the increase in hydrated lime content affected alkali concentration. The samples with lime exhibited a clear peak in UCS (6 M NaOH) compared with the continuous …

Optimization Of The Building Envelope And Roof Shading To Reduce The Energy Consumption Of College Low-Rise Buildings In Indonesia, Nasruddin Nasruddin, Azimil Gani Alam, Mohammad Imroz Sohel

Makara Journal of Technology

Energy consumption in buildings is a crucial concern globally, prompting researchers to explore innovative solutions to mitigate its impact. This study investigates the optimization of building envelopes and roof shading systems of existing buildings in Indonesia to realize notable energy savings. Multiple scenarios were explored, with modifications to building envelopes and roof shading, highlighting the overall thermal transfer value as a key parameter. Using EnergyPlus simulations, the efficacy of natural ventilation in corridors and roof shading modifications was assessed in reducing energy consumption. The findings revealed that renovating existing buildings by optimization of the building envelope and roof shading by …

Service-Learning In Action: Lafayette, Indiana, Rain Garden Installation, Elizabeth Mccleery

Purdue Journal of Service-Learning and International Engagement

Indiana’s Wabash River is being polluted with contaminated water runoff from precipitation events. A lack of pervious land cover has led to an accumulation of fertilizer, sediment, and waste in the river. Green infrastructure, a stormwater management practice that mimics the natural ecosystem, is one of the most effective ways to prevent pollution from stormwater runoff and benefit the community. This project consisted of a rain garden installation at the Lafayette Fueling Station, a site where frequent water drainage and water runoff into the Wabash occurs. The rain garden will allow on-site water infiltration during rain events and promote natural …

Building Services Engineering November/December 2023

Building Services Engineering

No abstract provided.

Building Services Engineering September/October 2023

Building Services Engineering

No abstract provided.

Critical Buckling Coefficient Of Tapered Web Plate Girder Under Compression And Bending Stresses, Saad A. Yehia, Ramy I. Shahin

Mansoura Engineering Journal

The tapered girders were developed as a cost-effective solution to the problem of long-span building construction. These systems are very attractive from an economic viewpoint, combining wide spans, quick erection, and easy access to services between the shallow parts of the beam and the ceiling below. Elastic-local buckling is one of several modes of failure that must be considered during the structure design. Although elastic-local buckling has been studied for decades, there is still a need to develop quick and comprehensive procedures that will reduce product design time, particularly during the pre-sizing stage. Most design codes have no specific provisions …