A calibrated noise impact assessment model for highway traffic in Lebanon Lebanon has embarked on an ambitious program of highway building
and upgrading. A key element of the Environmental Impact Assessment (EIA)
of highway construction is the noise impact. A unique situation arises
due to the proposed building of a new elevated “Northern Highway” between
the existing coastal highway and the existing coastal structures. At certain
locations, the proposed new highway is only 3 m away from existing structures.
Thus, these coastal structures will be subjected to aggregate noise
levels due to both existing and future highways. This situation warrants
the development of a noise prediction model for aggregate highway
traffic and the demonstration of it through application to the unique situation
in Lebanon. In addition, the study will identify the state-of-the-art noise
reduction measures and technologies. M.H.Baaj and M. El-Fadel
(Supported by URB.)
Effect of casting position on bond of reinforcement in eccentric pullout of silica fume concrete specimens The
objectives of the study were to investigate the role of casting position,
specimen type and specimen size on the effect of silica fume on bond strength
of reinforcing bars, and to evaluate the effect of bar size and concrete
confinement on the anchorage characteristics of the reinforcing bars in
silica fume concrete. Forty-eight eccentric pullout (305x305x254 mm) specimens
were cast. The variables were the percentage replacement by weight of cement
by silica fume, the concrete cover over the reinforcing bar, and the bar
size. The anchored bars were bottom cast as compared to similar specimens
tested before at AUB where the bars were top cast. Testing will be conducted
in the near future. Evaluation of the test results will be done during
the summer of 1999. B. Hamad (Supported by URB.)
Tactical planning of transit routes: operator class and market arrangement considerations This
research project is developing a framework for modeling the frequency setting
problem in mass transit routes, considering multiple vehicle and operator
classes, and different transit market arrangements. The aim is to relax
the simplifying assumptions imposed by previous formulations by developing
generalized tactical planning models capable of handling simultaneously
the issues of multiple vehicle and operator classes, as well as being capable
of considering, comparing, and contrasting different transit market arrangements.
During the first year of this project, the research developed a number
of case studies to determine and assess the optimal frequencies that would
be provided by operators in different service categories, under each of
four alternative transit market arrangements. The case studies clarified
critical service considerations in this generalized context, illustrating
the potential of the proposed modeling approach as a policy analysis tool.
July 1998-June 1999. I. Kaysi. (Supported by URB.)
Self-organization and traffic network performance under extreme uncontrolled conditions: postwar Beirut This
research project investigated the quality of traffic service under mostly
uncontrolled conditions. A framework for analysis is provided by the urban
road network in the city of Beirut in the period after 17 years of war.
A useful tool to characterize traffic at the network level is the two-fluid
model; the two fluids consist of moving and stopped vehicles as a result
of traffic conditions, and their interaction is observed to produce several
parameters contributing to the scope of this research. This model also
makes it possible to perform a sensitivity analysis whose objective is
to evaluate the impact of introducing several control measures in a context
characterized by lack of control. The study indicated that implementation
of traffic control measures in situations characterized by lack of control
will yield lower delays primarily at higher levels of traffic concentration.
July 1996-June 1998. I. Kaysi. (Supported by URB.)
Driver behavior modeling in MITSIM: review and recommended improvements The
research focused on the MITSIM traffic simulator, developed at MIT and
whose primary objective is to simulate integrated traffic networks supported
by advanced traffic control and surveillance systems. The simulator is
designed to establish a laboratory environment for testing and evaluating
designs of Advanced Traffic Management Systems and Advanced Traveler Information
Systems. The conducted research developed along three thrusts: (i) Providing
a review of driver behavior models in the existing implementation of MITSIM
and prioritizing enhancements to the behavioral models. (ii) Development
of specific “measures of performance” to be adopted in validation exercises,
enabling a more refined identification of MITSIM module performance. (iii)
Identification of “calibration” exercises which may be conducted to establish
MITSIM parameters consistent with Boston traffic data. 1997. I. Kaysi
and M. Ben-Akiva*.
Acra, A.*, Ayoub, G. M., Experimental evaluation of a novel photodynamic water disinfection technique. Journal Water Supply, Research and Technology, Aqua, 46-4, 218-223, 1997. Ashur, S.*, Baaj, M. H., A planning and design model for transit route networks with coordinated operations. Southwest Center for Environmental Research and Policy, 1998. Ashur, S.*, Baaj, M. H., Crockett, B.*, Effective decision-making in engineering management utilizing GIS. Transportation Research Record, 601-612, 1998. Ashur, S.*, Baaj, M. H., O’Conelli, R.*, Flows and regional risk assessment of transporting hazardous waste in the U. S.-Meborder. Southwest Center for Environmental Research and Policy, 1997. Ashur, S.*, Baaj, M. H., Pijawka, K. D.*, Serhan, D.*, Environmental impacts assessment of transporting hazardous waste generated by the Maquiladora Industry across the U.S.-Mexico border region. Transportation Research Record, 1602, 84-92, 1997. Baaj, M. H., Mneimneh, F.*, The role of information technologies in promoting effective planning and management of the transportation system in the Beirut metropolitan region. Lebanese Technical Reports, 1, 1-56, 1997. Basha, H. A., Analytical model of two-dimensional in nonuniform lateral velocity distributions. Journal of Hydraulic Engineering, American Society of Civil Engineers, 123/10, 853-862, 1997. ———, Multidimensional nonsteady infiltration with prescribed boundary conditions at the soil surface. Water Resources Research, 35, 75-84, 1999. Basha, H. A., Mina, N.I.*, Parameter estimation of the hydraulic conductivity function from the pressure distribution in a centrifugal field. Water Resources Research, 35, 469-478, 1999. Basha, H. A., Selvaduraim A.P.S.*, A heat-induced moisture movement in the vicinity of a heat source. International Journal of Numerical Analytical Methods of Geomechanics, 22, 969-981, 1998. El-Fadel, M., Leachate recirculation effects on settlement and biodegradation rates in MSW landfills. Environmental Technology, 20, 121-134, 1998. ———, Hydraulic performance of large submersible pumps. Journal of Hydroscience and Hydraulic Engineering, 15, 1-13, 1997. ———, Settlement and stabilization processes in municipal solid waste. Lebanese National Council for Scientific Research, 1999. El-Fadel, M., Abou Najm, M., Sbayti, H., Air quality modeling at grade intersections. In Urban Transport and the Environment for the 21st Century. UK: Wessex Institute of Technology, 1999. El-Fadel, M., Bou-Zeid, E., Greenhouse gas emissions from the transportation sector in developing countries. Journal of Transportation Research, Part D, 4, 251-264, 1999. El-Fadel, M., Bou-Zeid, E., Transportation emissions in Lebanon. In Urban Transport and the Environment for the 21st Century. UK: Wessex Institute of Technology, 1999. El-Fadel, M., Findikakis, A.*, Leckie J.*, Modeling leachate generation and transport in solid waste landfills. Environmental Technology, 18, 669-687, 1997. ———, Gas simulation models for solid waste landfills. Critical Review in Environmental Science and Technology, 13, 1-49, 1997. ———, Environmental impacts of solid waste landfilling, Journal of Environmental Management, 50, 1-25, 1997. ———, Numerical modeling of gas and heat generation and transport: III. Sensitivity analysis. Waste Management and Research, 15, 1-16, 1997. El-Fadel, M., Rashed, H.*, Settlement in municipal solid waste landfills: I. Field scale experiments. Journal of Solid Waste Technology and Management, 25, 89-98, 1998. ———, Settlement in municipal solid waste landfills: II. Mathematical Simulation. Journal of Solid Waste Technology and Management, 25, 99-104, 1998. El-Fadel, M., Sadek, S., Environmental curriculum development for University and profession education in the Middle East and the United States. United States Information Agency, 1999. El-Fadel, M., Sadek, S., Graveel, G.*, Lee, S.*, Mousa, H.*, Al-Lawzi, M.*, Abu-Al-Sha’r, W.*, Teachers notes for environmental curriculum development for university and professional education in the Middle East and the United States. United States Information Agency, 1998. ———, Environmental curriculum development for university and professional education in the Middle East and the United States. United States Information Agency, 1999. El-Fadel, M., Sadek, S., Khoury, R., Settlement and stabilization processes in municipal solid waste landfills. Report for National Council for Scientific Research, 1999. El-Fadel, M., Sbayti, H., Abou Najm, M., Noise Modeling at grade intersections, 1999. In Urban Transport and the Environment for the 21st Century. UK: Wessex Institute of Technology, 1999. El-Fadel, Shazbak, S., Air and noise impacts at parking facilities. In Urban Transport and the Environment for the 21st Century. United Kingdom: Wessex Institute of Technology, 1999. Ghannam, J.*, Ayoub, G. M., Acra, A.*, A profile of the submarine springs in Lebanon as a potential water resource. Water International, Journal of the International Water Resources Association, 23-4, 1998. Hamad, B. S., Evaluation and repair of the fire damaged reinforced concrete structures in Beirut, Lebanon. Journal of Applied Fire Science, 6-2, 127-139, 1997. Hamad, B. S., Itani, M. S.*, Bond of reinforcement in high performance concrete: role of silica fume, casting position, and superplasticizer dosage. American Concrete Institute Materials Journal, 95-5, 499-511, 1998. ———, Bond studies of reinforcing bars in silica fume concrete. American Concrete Institute Special Publication, SP-180, 473-491, 1998. Hamad, B. S., Sabah, S. M.*, Bond of reinforcement in eccentric pullout silica fume concrete specimens. Materials and Structures Journal, 31, 707-713, 1998. Harajli, M. H., Sallouk, K.*, Effect of fibers on splice strength of reinforcing bars in tension. American Concrete Institute Materials Journal, 94-4, 317-324, 1997. Mabsout, M., Tarhini, K.*, Frederick, G.*, Tayar, C., Finite-element analysis of steel girder highway bridges. Journal of Bridge Engineering, ASCE, 83-87, August 1997. Mabsout, M., Tarhini, K.*, Frederick, G.*, Kobrosly, M.*, Influence of sidewalks and railings on wheel load distribution in steel girder bridges. Journal of Bridge Engineering, ASCE, 88-96, August 1997. Mabsout, M., Tarhini, K.*, Frederick, G.*, Kesserwan, A., Effect of continuity on wheel load distribution in steel girder bridges. Journal of Bridge Engineering, ASCE, 103-110, July 1998. ———, Effect of multi-lanes on wheel load distribution in steel girder bridges. Journal of Bridge Engineering, ASCE, 99-106, May 1999. Sadek, S., Bedran, M., Geotechnical modeling of the Beirut metropolitan region (BMR) using GIS, 1997. Sadek, S., Bedran, M., Kaysi, I., A GIS platform multi-criteria evaluation of route alignments. ASCE Journal of Transportation Engineering, March 1999. Sadek, S., Graveel, G.*, Lee, S.*, Mousa, H.*, Al-Lawzi, M.*, Abu-Al-Sha’r, W.*, International environmental decision case studies in wastewater management, solid waste management, and land reclamation. United States Information Agency, 1998. Shahalam, A. B.*, Competitive absorption phenomena of petrochemicals-benzene, toulene, and sylene in hexane in fixed beds of sands. Water, Air and Soil Pollution, 95, 221-235, 1997. Shih, M. C.*, Mahmassani, H. S.*, Baaj, M. H., A planning and design model for transit route networks with coordinated operations. Transportation Research Record, 1998. ———, A trip assignment model for timed-transfer transit systems. Transportation Research Record, 1571, 24-30, 1997. Staudte,
M.*, Rau, M.*, El-Fadel, M., Urban air quality monitoring program for the
Greater Beirut Area. Transtec-Fitchner Consortium, 1997.
ABSTRACTS,
PRESENTATIONS AND PROCEEDINGS
Bious, A.*, Ayoub, G. M., Acra, A.*, Adsorption of petrochemicals onto natural soils. The 4th International Civil Engineering Conference, Technical University of Sherif, Tehran, Iran, 1997. Chahine, M.*, Mabsout, M., A CAD application for typical structural floor systems. The 22nd LAAS International Conference on Computer Simulation, 531-538, Beirut, Lebanon, 1997. El-Fadel, Bou-Zeid, E., Greenhouse gas emissions and mitigation in developing countries, AWMA, Emission Inventory: Living in a Global Environment, 1-13, New Orleans, Louisiana, 1998. El-Fadel, Chahine, W.*, An integrated solid waste management system for the Beirut area. First International Conference on Solid Waste, 526-534, Rome, Italy, 1999. El-Fadel, Rashed, H.*, Settlement in MSW landfills: Field scale experiments and mathematical modeling. 13th International Conference on Solid Waste Technology and Management, 9B (1-8), Philadelphia-Pennsylvania, 1997. El-Fadel, Sadek, S., Restoring a sand quarry into MSW landfills. 13th International Conference on Solid Waste Technology and Management, 6A (1-8), Philadelphia-Pennsylvania, US, 1998. ———, Rehabilitation of a large coastal landfill. 13th International Conference on Solid Waste Technology and Management, 8B (1-8), Philadelphia-Pennsylvania, 1997. ———, Rehabilitation of large coastal landfill. 13th International Conference on Solid Waste Management, Philadelphia, Pennsylvania, USA, November 1997. ———, The feasibility of restoring former quarry sites in MSW landfills. 14th International Conference on Solid Waste Management, Philadelphia, Pennsylvania, USA, November 1998. El-Fadel, Sadek, S., Khoury, R.*, Simulation of solid waste settlement in laboratory columns, Cagliary, Italy, 1999. El-Fadel, M., Zeinati, M., Perspectives in water resources management in Lebanon. Expert Group Meeting on Updating the Assessment of Water Resources in the ESCWA Member Countries, E/ESCWA/ENR/1999/WG.1/L.2, 1-25, Beirut, Lebanon, 1999. El-Jisr, K., El-Fadel, M., Environmental Assessment of MSW Landfilling in Quarries. First International Conference on Solid Waste, 249-258, Rome, Italy, 1999. Frederick, G.*, Tarhini, K.*, Mabsout, M., Structural evaluation of concrete box culverts subject to live loads. The Third Conference on Structural Performance of Pipes, Athens, Ohio, 1998. ———, Development of a design procedure for three-sided concrete culverts. The Third Conference on Structural Performance of Pipes, Athens, Ohio, March 1998. Khairallah, N.*, Harajli, M. H., Experimental evaluation of the behavior of reinforced concrete T beams strengthened using external prestressing, International Conference on Rehabilitation and Development of Civil Engineering Infrastructure Systems, II, 1282-1293, American University of Beirut, Beirut, Lebanon, 1997. Kaysi, I., Development and use of GIS-based expert system for siting solid waste landfills. 19th ESRI International User Conference, San Diego, 1999. Kaysi, I., Alam, G.*, Characterization traffic conditions in urban networks with minimal control: a case study of post-war Beirut. The 8th World Conference on Transport Research, Antwerp, Belgium, July 1998. Kaysi, I., Anouti, A.*, Frequency setting decisions in mixed public/private operations over transit routes. The 8th World Conference on Transport Research, Antwerp, Belgium, July 1998. ———, ATIS design to support traveler decision-making: identifying information needs of systems developers and operating agencies. The 8th Meeting of International Association of Travel Behavior Research, Austin-Texas, September 1997. Sadek, S., Bedran, M.*, An integrated arcview framework for roadway design analysis and evaluation. 18th ESRI International User Conference, San Diego, 1998. Sadek, S., El-Fadel, M., The management of surface and groundwater resources in Lebanon. Third International Symposium on Artificial Recharge of Groundwater (TISAR 98), 35-39, Amsterdam, The Netherlands, 1998. ———, Development of closed landfill sites in urban areas. The International Conference on Rehabilitation and Development of Civil Engineering Infrastructure Systems, Beirut, Lebanon, 1997. ———, Reclamation of waste fills in the Beirut central district. The Fifth International Conference on Polluted and Marginal land, London, July 1998. Sadek, S., El-Fadel, M., Graveel, J. G.*, Lee, L. S.*, Mousa, H.*, Al-Lawzi, M.*, Abou-El-Sha’r, W.*, Managing solid waste landfills: Case studies from the US and the Middle East. ASA, CSAA, SSSA Annual Meeting, Baltimore-Maryland, October 1998. ———, Using GIS to site the Beirut-south mountain highway (SMH). First International Conference on GIS in the next millennium, Udine, Italy, 1998. ———, Geotechnical modeling of the Beirut Metropolitan Region (BMR) using GIS. International Conference on Rehabilitation and Development of Civil Engineering Infrastructure Systems, Beirut, Lebanon, 1997. Salhab, S., El-Fadel, M., Environmental assessment of MSW incineration. First International Conference on Solid Waste, 517-525, Rome, Italy, 1999. Saringson, R. R.*, Ekmekji, B. A.*, Sayigh, A.*, Bious, A.*, Ayoub, G. A., A nationwide pollution abatement program for Lebanon, using GIS analysis. WEFTEC’98 the 71st Annual Water Environment Federation (WEF) Conference and Exposition, Orlando-Florida, USA, 1998. Tarhini, K.*, Mabsout, M., Frederick, G.*, Parameters influencing the wheel load distribution in steel girder bridges. The Structural Engineers World Congress (SEWC), 511, San Francisco-California, July 1998. ———, Finite element modeling of shallow concrete box culverts. The Structural Engineers World Congress (SEWC), 518, Beirut, Lebanon, July 1998. Zeinati,
M., El-Fadel, M., Environmental assessment of MSW composting. First
International Conference on Solid Waste, 508-518, Rome, Italy, 1999.
El-Fadel,
M., Massoud, M., Privatization of solid waste management in Lebanon, 1999.
Alam, G., Characterization uncontrolled traffic conditions in postwar Beirut (1997). I. Kaysi. Bassil, J. N., Evaluation of the Geotechnical properties and engineering behavior of Lebanese Marls (1997). S. Sadek. Bedran, M. A., A geotechnical referenced model of the Beirut Metropolitan Region (BMR) incorporating pertinent geotechnical properties (1997). S. Sadek. El-Khoury, N., Seismic risk assessment of existing building structures in Lebanon (1997). M. Harajli. Jabakhanji, R. Finite element analysis of embedded precast concrete culverts (1999). M. Mabsout, Sadek. Jebara, F. Y., Activated sludge biofilm, wastewater treatment system (1998). G. M. Ayoub Khoury, R., Seawater and leachate recirculation effects on physico-chemical processes in municipal solid waste (1999). M. El-Fadel. Naddaf, I., Influence of lad reduction in multi-lane bridges (1998). M. Mabsout. Seferian,
Z., Role of casting position on bond of confined tension lap splices in
silica fume concrete (1999). B. Hamad.
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