Evaluation of Urban Public Transport: A Case Study of Yarmouk University
Ahmad H. Alomari, Malek H. Aldalal'ah, Majd Al-Deen M. Al-Dalaika, Ghaida K. Sawae, Shaima K. Sawae, Doa’a M. Al-Alawneh
Page Numbers : 8-17
DOI : 10.36348/sjce.2021.v05i01.002
Universities with urban campuses are often seeking solutions to congestion and parking problems in their neighborhoods. Yarmouk University (YU), Irbid-Jordan, faces severe pressure from the continuous and dynamic activities with high traffic congestion due to its location. This paper surveyed the significant characteristics of commuters to the YU campus and explored the quality and efficiency of existing offered public transport services. A sample of nearly 1006 students, faculty, and staff at the campus was surveyed using an online, paper, and one to one questionnaire surveys. Results showed that majority of travelers (39.8%) to campus were from Qasabet Irbid (Irbid central area). Also, 41% reported that total journey time needed to campus was between thirty minutes to one hour. It is also found that a substantial proportion of respondents (68.6%) do not own a passenger car. The most common parking problems mentioned by respondents who commute to campus were the insufficient parking spaces (30.3%), not covered parking (20.5%), and walking long distances from parking lots to their destination (19.9%). Furthermore, 52% of the respondents reported using public transport daily, 45.8% stated arriving at the campus in the early morning (5AM–8:30AM), 49.2% stated leaving the campus in the early afternoon (Noon–3:00PM), 36% stated that Sunday was the hardest day to get to university, and 30.3% stated that it was Thursday. This research value arises from the anticipated analysis that may help understand campus community travelers' behavior to enhance future planning efforts in different urban universities according to the existing situation.
Original Research Article
Feb. 4, 2021
A Case Study on Irregularities Present in Tall Building and Review of Provisions on Indian Standard
Page Numbers : 1-7
DOI : 10.36348/sjce.2021.v05i01.001
Irregularities are mainly categorized under the plan and vertical irregularity in IS 1893 (Part 1): 2016 along with precautions for design and analysis in case of occurrence of irregularities. In this paper, an effort is done to identify irregularities present in existing commercial cum residential building satisfying provisions of Indian Standard code, and the complications on the adaption of mitigating measures. It is concluded that re-entrant corner irregularity is rampant in residential apartments and a soft storey is likely with open parking floors and building with variation in storey heights. Also, the three-dimensional vertical analysis method is ambiguous to adopt and the use of equivalent diagonal strut is ineffective with current clauses. Furthermore, additional clarification of weak storey is requisite.
Original Research Article
Dec. 30, 2020
Impact of Fixed Cameras on Traffic Crashes
Hashem R. Al-Masaeid, Randa O. Mujalli, Esra’a H. Al-Haj
Page Numbers : 192-198
DOI : 10.36348/sjce.2020.v04i10.001
Speeding is one of the main causes of traffic crash fatalities. Different effective strategies have been applied to prevent this critical issue; for example, humps, setting speed limit, and speed cameras. This study evaluates the effectiveness of speed cameras that are implemented on midblock of urban, suburban and on segments of rural arterials in Jordan in January 2018. Interrupted time series analysis (ARIMA model) was used for examining the effects of the speed cameras on the number of crashes. Various functions; including linear, quadratic, logarithmic, exponential, and power, were applied in order to evaluate the effect of speed cameras on traffic crashes. Results of analyses indicated that speed cameras implemented on suburban and urban arterials with speed limit less than 80 km/h had a crash reduction of 10 to 19%. On the contrary, it was found that the number of crashes on a limited number of rural arterials’ segments was increased by about 36%, this result should be further investigated since the sample size of rural segments was relatively small.
Original Research Article
Nov. 30, 2020
Critical Success Factors for BIM Implementation in Construction Projects
A. M. Darwish, M. M. Tantawy, Emad Elbeltagi
Page Numbers : 180-191
DOI : 10.36348/sjce.2020.v04i09.006
The advent of Building Information Modeling (BIM) offers new opportunities to further harness the efficiency of construction projects. Hence, to implement a BIM project in construction projects successfully without unforeseen confusion and troubles, the factors affecting the project's success must be identified and managed effectively. The research objectives are to identify the CSFs for enhancing BIM implementation and investigate the interrelationships among these CSFs. Fifty-one success factors are identified through literature review and a questionnaire survey is conducted among 345 participants. The results identified 15 factors as the most critical ones among the identified 51 factors, with the “coordination between all project parties“ranked the top. These fifteen significant factors have been grouped into an integrated structural framework that can help to enhance BIM implementation in construction projects. Also, this study developed a framework to measure the performance of BIM implementation which would help to follow the progress of BIM implementation along the project life cycle.
Nov. 28, 2020
Underground Coal Gasification (UCG) -A Pilot Study at Certain Area of Jamalganj Coal Basin, Joypurhat District, Bangladesh
Mohammed Masum, Mohammad Nurul Hoque, Md. Ali Akbar, Zobayer Mahmud, Md. Al Amin, Md. Abdur Razzaque, Md. Kamrul Ahsan
Page Numbers : 170-179
DOI : 10.36348/sjce.2020.v04i09.005
Geological Survey of Bangladesh has been entrusted with the responsibilities of investigation and exploration of several kinds of solid mineral resources and discovered four major Gondwana coalfields at southern slope of Rangpur saddle of Bangladesh. Underground Mining is going on only in Barapukuria coal field and the rest of coal fields mining operation at this stage still not possible due to the greater depth. Jamalganj coal basin is one of the largest coal basin of Bangladesh where underground mining method for further mining may be really difficult. Around 4000 million tons of coal deposited in that coalfield which equivalents (due to energy) to about 130 Tcf Gas. It might not be technically feasible or economically viable to mine coal resources of that coalfield till now. Potential for underground coal gasification in the specific area of Jamalganj coalfield of Bangladesh should be needed to study. It has adequate depth (600-800m) and workable overburden as well as their chemical properties of coal (Calorific value-26.84%, Sulfur content- 0.55%, Fixed carbon- 36.72%, Volatile matter- 36.92%, Moisture content and Ash content 3.58%) which might be positive sign for UCG implementation. The high-volatile to medium-volatile bituminous coal is very suitable for UCG exploration in terms of their depth of occurrence, thickness of coal seam, coal reserve and areal extent. The thickest seam-III (over 40 m) can be a primary target for UCG development especially where it combines with seam-II in the eastern part of the coalfield.
Original Research Article
Nov. 11, 2020
Socio-Economic Impacts of Transit Projects (A Case Study of Orange Line Lahore)
Alisha Shahid, Muhammad Ansub, Asra Hafeez, Hamza Saleem, Aroosa basharat
Page Numbers : 161-169
DOI : 10.36348/sjce.2020.v04i09.004
Open spaces have significant importance in the life of the settlements. The areas with high green coverage rate have ecological and environmental importance. These green spaces can improve the urban climate, abate the urban heat- island effect by their ecological-balancer function and reduce environmental damages. In recent years, less attention has been paid to open spaces (including green areas and green spaces) and their components as well as their effect on the environment. Due to mega transit projects environment of Lahore is continuously in danger. This research have highlighted the importance of green spaces which is destroyed badly after every project. Research have also highlighted the socio economic conditions, willingness of residents of Lahore where the project of orange line was initiated. In the end of the research the authors have proposed some useful measures through which planners and engineers can hold on projects and will provide less harm to environment.
Original Research Article
Nov. 5, 2020
Novel Formulas for Displacements and Stresses of Thick Anisotropic Rectangular Plate
Ibearugbulem OM, Ezeh JC, Ozioko HO, Anya UC
Page Numbers : 137-149
DOI : 10.36348/sjce.2020.v04i09.002
This work concentrated on the analysis of thick anisotropic rectangular plate through exact approach using third order shear deformation theory. Refined plate theory assumptions were relied upon to formulate the total potential energy functional. Displacement field, kinematic relations, constitutive relations and stress displacement relations were also obtained from the assumptions. Kinematic relations and Stress-displacement relations were substituted into the universal strain energy equation to formulate the strain energy equation. Total potential energy functional for the analysis of thick anisotropic rectangular plate was obtained by adding the external work and strain energy equation together. The total potential energy functional was differentiated with respect to the out plane deflection (w), shear deformation rotation in x direction (_x) and shear deformation rotation in y direction (_y). This yielded the governing equation and two compatibility equations of thick anisotropic rectangular plate. Third order polynomial shear deformation function which was derived by Ibearugbulem et al. was relied upon to obtain the displacement functions. From these displacement functions, the unique displacement functions for the SSSS plate boundary condition were determined. Also the stiffness coefficients were calculated for the SSSS plate boundary condition. The formulas for calculating the coefficients of the displacements were combined with elastic equations to determine the novel formulas which were used in calculating for displacements (u, v and w) and stresses (σ_RR,σ_QQ,τ_RQ,τ_RS and τ_QS) at various angle fiber orientation (0^0, 〖15〗^0, 〖30〗^0, 〖45〗^0, 〖60〗^0, 〖75〗^0 and 〖90〗^0) and various span to thickness ratio, α (5, 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100). These formula were used to analyze typical anisotropic rectangular thick plates. The results obtained were shown on Tables 1, 2, 3, 4 and 5. These numerical results obtained showed some level of agreement with previous works by other scholars. Hence the developed method is recommended for analyzing thick rectangular anisotropic plates.