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Course Syllabus ENCE 454 ©Assakkaf INSTRUCTOR: Name: Dr. Ibrahim A. Assakkaf Office Hours: Tu Th 11:00 am - 12:00 noon, and 1:00 pm - 2:00 pm F 12:00 noon -1:00 pm, and by appointment Room: 0305, Engineering Classroom Building (EGR) Center for Technology and Systems Management (CTSM) Telephone: (W) 301-405-3279 Email: …
REINFORCED CONCRETE Reinforced Concrete Design Fifth Edition A Fundamental Approach - Fifth Edition CHAPTER FLEXURE IN BEAMS A. J. Clark School of Engineering Department of Civil and Environmental Engineering 5a By SPRING 2004 Dr . Ibrahim. Assakkaf ENCE 454 Design of Concrete Structures Department of Civil and …
By 4 SPRING 2004 Dr . Ibrahim. Assakkaf. ENCE 454 – Design of Concrete Structures Department of Civil and Environmental Engineering University of Maryland, College Park. CHAPTER 4. REINFORCED CONCRETE Slide No. 1 Introduction ENCE 454 ©Assakkaf Concrete is weak in tension but strong in compression. Therefore, reinforcement is …
Ibrahim A. Assakkaf, Ph.D. Director of Reliability Research, Lecturer . Center for Technology and Systems Management 0305 Engineering Classroom Building . …
Course Syllabus ENES 220 ©Assakkaf Instructor Name: Dr. Ibrahim A. Assakkaf Office Hours: MW 11:00 am - 12:00 pm and 1:00 pm – 2:00 pm F 12:00 am - 1:00 pm, and by appointment Room: 0305, Engineering Classroom Building (EGR) Center for Technology and Systems Management (CTSM) Telephone: (W) 301-405-3279 Email: …
Dr . Ibrahim. Assakkaf CHAPTER 12a. FOOTINGS Slide No. 1 Introduction ENCE 454 ©Assakkaf The purpose of the structural portion of every building is to transfer applied loads safely from one part of the structure to another. The loads pass from their point of application into the superstructure, then to the foundation, and then into the
Cement and Water ENCE 355 ©Assakkaf – The ratio can be expressed in terms of gallons of water per bag of cement. QRequirements – For complete hydration of cement in a mix, a water/cement ratio of • 0.35 to 0.40, or • 4 to 4.5 gal.bag is required. CHAPTER 1a. MATERIALS AND MECHANICS OF BENDING Slide No. 15 Aggregates ENCE 355 …
Dr . Ibrahim. Assakkaf CHAPTER 0b. INTRODUCTION TO DECISION ANALYSIS FOR ENGINEERING Slide No. 1 Computers, Software, and SpreadsheetsENCE 627 ©Assakkaf Computers Evolution Era (Chapra & Canale 1988) – Zero Generation - Manual & Mechanical (pre 1951) – First Generation – Vacuum tubes (1951 – 1958) – Second …
Portland Cement ENCE 454 ©Assakkaf Manufacture – The raw materials that make cement are: 1. Lime (CaO), from limestone 2. Silica (SiO 2), from clay 3. Aluminum (Al 2O 3), from clay Specific Gravity: 3.12 and 3.16 Weight: 94 lb/ft3 (for commercial sack) CHAPTER 2. CONCRETE-PRODUCING MATERIALS Slide No. 3 Portland Cement …
Zhongyuan District is located in Zhengzhou (Henan, China). It has many popular attractions, including Jinyi City Aquarium, Zhengzhou Botanical Garden, Zhengzhou Art …
Dr . Ibrahim. Assakkaf CHAPTER 4a. SHEAR IN BEAMS Slide No. 1 Introduction ENCE 355 ©Assakkaf QThe previous chapters dealt with the flexural strength of beams. QBeams must also have an adequate safety margin against other types of failure such as shear, which may be more dangerous than flexural failure. QThe shear forces create additional
Dr . Ibrahim. Assakkaf CHAPTER 4a. MAKING CHOICES Slide No. 1 ENCE 627 ©Assakkaf Making Choices. 2 ... Criteria for Comparing Results ENCE 627 ©Assakkaf nCivil Lawsuit (cont'd) Claimant's Claimant Wins Claimant Loses Decision D2 = Jury $4,950,000-$50,000 D1= Settlement $450,000 $450,000
Dr . Ibrahim. Assakkaf CHAPTER 9a. COLUMNS Slide No. 1 Introduction ENCE 355 ©Assakkaf QAxial Compression – Columns are defined as members that carry loads in compression. – Usually they carry bending moments as well, about one or both axes of the cross section. – The bending action may produce tensile forces over a part of the cross ...
Dr . Ibrahim. Assakkaf CHAPTER 7b. PROBABILITY BASICS Slide No. 1 Introduction ENCE 627 ©Assakkaf The central principles of decision analysis is that we can represent uncertainty of any kind through the appropriate use of probability. Be able to create and analyze a model that represents the uncertainty faced in a decision.
Shearing Stress in Thin-Walled ENES 220 ©Assakkaf Members Consider a segment of a wide-flange beam subjected to the vertical shear V. The longitudinal shear force on the element is x I VQ ∆H = ∆ (2) LECTURE 15. BEAMS: SHEAR FLOW, THIN-WALLED MEMBERS (6.6 – 6.7) Slide No. 17 Shearing Stress in Thin-Walled ENES 220 …
Nonrectangular Sections ENCE 454 ©Assakkaf (a) L-Beam (Spandrel or Edge Beam) (b) T-Beam Figure 29. T- and L-beams as part of a slab beam floor system (cross-section at beam midspan) CHAPTER 5e. FLEXURE IN BEAMS Slide No. 11 Nonrectangular Sections ENCE 454 ©Assakkaf Negative Bending Moment – It should be noted that when the T- or L-Beam
ENCE 454 ©Assakkaf Example 5 (cont'd) Dc Ds Figure 5. Definition of Dc and Ds Spiral ()D ()s A D c sp s s /4 actual π 2 π ρ= D s A c sp s 4 actual ρ= Approximate: Analysis of Short Columns: Small Eccentricity CHAPTER 9b. COMBINED COMPRESSION AND BENDING: COLUMNS Slide No. 15 ENCE 454 ©Assakkaf Example 5 (cont'd) Clear distance …
Dr . Ibrahim. Assakkaf CHAPTER 5a. DEVELOPMENT, SPLICES, AND SIMPLE SPAN BAR CUTOFFS Slide No. 1 Introduction ENCE 355 ©Assakkaf QIf the reinforced concrete beam shown in Fig. 1 were constructed using plain round reinforcing bars, and in addition, if those bars were to be greased or otherwise lubricated before the concrete
Dr. Ibrahim A. Assakkaf Center for Technology and Systems and Management Department of Civil Engineering University of Maryland 0305 Glenn L. Martin Hall (EGR) College Park, MD 20742 Tel: (301) 405-3279 UMCP Fax: (301) 405- 2585 UMCP Office Hours: Tu W 1:00 am - 3:00 pm F 2:30 noon -4:30 pm, and by appointment E-mail: [email protected]
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Dr . Ibrahim. Assakkaf CHAPTER 3a. ANALYSIS OF TENSION MEMBERS Slide No. 1 Introduction ENCE 355 ©Assakkaf QTension members are found in – Bridges and roof trusses – Towers – Bracing systems – Cases where they are used as tie rods QThe design of tension members is very simple and straightforward. QNo buckling problems are …
Ibrahim Assakkaf Bilal M Ayyub The main objective of structural design is to insure safety, function, and performance of an engineering system for target reliability levels and for specified time ...
A. J. Clark School of Engineering Department of Civil and Environmental Engineering 10 By Dr. Ibrahim Assakkaf ENCE 420 Construction equipment and Methods Spring 2003. Department of Civil and Environmental Engineering University of Maryland, College Park CHAPTER 10. TRUCKS AND HAULING equipment Slide No. 1. ENCE 420 Assakkaf …
Dr . Ibrahim. Assakkaf CHAPTER 3b. ANALYSIS OF TENSION MEMBERS Slide No. 1 Effect of Staggered Holes ENCE 355 ©Assakkaf QWhenever there is more than on hole and the holes are not lined up transverse to the loading direction, more than one potential failure line may exist. QThe controlling failure line is that line which gives the minimum …
By 4 SPRING 2004 Dr . Ibrahim. Assakkaf. ENCE 454 – Design of Concrete Structures Department of Civil and Environmental Engineering University of Maryland, College Park. …
Introduction to Simulation ENCE 627 ©Assakkaf Simulation Techniques – Simulation is a process of replicating the real world based on a set of assumptions and conceived models of reality. – Simulation can be performed either: • Experimentally, or • Theoretically – In practice, theoretical simulation is performed (inexpensive).
Dr. Ibrahim Assakkaf ENCE 420 – Construction Equipment and Methods Spring 2003 Department of Civil and Environmental Engineering University of Maryland, College Park CHAPTER 7. SCRAPERS ENCE 420 ©Assakkaf Slide No. 1 TRACTORSTRACTORS--PULLED SCRAPERS Tractor-pulled scrapers are designed to load, haul, and dump …
Dr . Ibrahim. Assakkaf CHAPTER 5a. INTRODUCTION TO AXIALLY LOADED COMPRESSION MEMBERS Slide No. 1 Introduction ENCE 355 ©Assakkaf QAxial Compression – Columns are defined as members that carry loads in compression. – Usually they carry bending moments as well, about one or both axes of the cross section. – The …
Dr . Ibrahim. Assakkaf CHAPTER 6a. SHEAR AND DIAGONAL TENSION IN BEAMS Slide No. 1 Introduction ENCE 454 ©Assakkaf The previous chapter dealt with the flexural strength of beams. Beams must also have an adequate safety margin against other types of failure such as shear, which may be more dangerous than flexural failure.
Simulation ENCE 627 ©Assakkaf Simulation is a very powerful and widely used management science technique for the analysis and study of different types of systems. Because of complexity, stochastic relations, and so on, not all real-world problems can be represented adequately in a model form. Attempts to use analytical models for such