fframes.pdf1.0 INTRODUCTION TO STRUCTURAL ENGINEERING1.1 GENERAL INTRODUCTION1.2 STRUCTURAL DESIGN1.3 STRUCTURAL FRAMEWORK1.4 STRUCTURAL MEMBERS1.5 STRUCTURAL CONNECTIONS1.6 Structural Loads1.6.1 Step I. Categorization of Buildings1.6.2 Dead Loads (D)1.6.3 Live Loads1.6.4 Roof Live Loads1.6.5 Wind Loadslecture_on_frames2_SUM03.pdf1.0 INTRODUCTION TO STRUCTURAL ENGINEERING1.1 GENERAL INTRODUCTION1.2 STRUCTURAL DESIGN1.3 STRUCTURAL FRAMEWORK1.4 STRUCTURAL MEMBERS1.5 STRUCTURAL CONNECTIONS1.6 Structural Loads1.6.1 Step I. Categorization of Buildings1.6.2 Dead Loads (D)1.6.3 Live Loads1.6.4 Roof Live Loads1.6.5 Wind LoadsChapter 2 - Beams.pdfChapter 2. Design of Beams – Flexure and Shear2.2 Flexural Deflection of Beams – ServiceabilityExample 2.2 Design a simply supported beam subjected to uniformly distributed dead load of 450 lbs/ft. and a uniformly distributed live load of 550 lbs/ft. The dead load does not include the self-weight of the beam.Note that the serviceability design criteria controlled the design and the sectionTherefore, service-load deflection = ? = ?d + ?c2.3 Local buckling of beam section – Compact and SectionIn CE405 we will design all beam sections to be compact from a local buckling standpoint2.4 Lateral-Torsional Buckling2.4.2 Moment Capacity of beams subjected to non-uniform bending momentsExample 2.4Example 2.5SpanChapter 3 - Compression members.pdfCHAPTER 3. COMPRESSION MEMBER DESIGN3.1 INTRODUCTORY CONCEPTSSolutionStep III - Select a column sectionSelect section W12x53Step VI. Check the local buckling limitsStep VI. Check the local buckling limitsFlexural-torsional buckling will occur about the y and z-axisSmaller of the two will govern the design strengthSolutionEXAMPLE 3.11 Calculate the design strength of theSolutionPropertySingle angleChapter 4 - Tension members.pdfChapter 2. TENSION MEMBER DESIGN4.1 INTRODUCTORY CONCEPTS4.7 Design of tension membersChapter 4 - Tension members.pdfChapter 4. TENSION MEMBER DESIGN4.1 INTRODUCTORY CONCEPTS4.7 Design of tension membersChapter 5 - Bolted connections.pdfCHAPTER 5. BOLTED CONNECTION5.1 INTRODUCTORY CONCEPTSSolutionSolutionSolutionFor the remaining steps III to VII follow Example 4.2Chapter 6 - Welded connections.pdfCHAPTER 6. WELDED CONNECTIONS6.1 INTRODUCTORY CONCEPTS6.2 Design of Welded ConnectionsStep III. Tension strength of the memberSummer '03 Schedule.pdfSheet1SUM03_All Hwks.pdfHomework No. 1: Structural Engineering and Design LoadsHomework #3 Beam Design.pdfHomework No. 3Problem No. 1Homework #4 Beam Design.pdfHomework No. 4CE 405: Design of Steel Structures – Prof. Dr. A. Varma 1.0 INTRODUCTION TO STRUCTURAL ENGINEERING 1.1 GENERAL INTRODUCTION Structural design is a systematic and iterative process that involves: 1) Identification of intended use and occupancy of a structure – by owner 2) Development of architectural plans and layout – by architect 3) Identification of structural framework – by engineer 4) Estimation of structural loads depending on use and occupancy 5) Analysis of the structure to determine member and connection design forces 6) Design of structural members and connections 7) Verification of design 8) Fabrication & Erection – by steel fabricator and contractor 9) Inspection and Approval – by state building official Ideally, the owner and the architect, the architect and the engineer, and the engineer and the fabricator/contractor will collaborate and interact on a regular basis to conceive, develop, design, and build the structure in an efficient manner. The primary responsibilities of all these players are as follows: • Owner - primary responsibility is deciding the use and occupancy, and approving the architectural plans of the building. • Architect - primary responsibility is ensuring that the architectural plan of the building interior is appropriate for the intended use and the overall building is aesthetically pleasing. • Engineer – primary responsibility is ensuring the safety and serviceability of the structure, i.e., designing the building to carry the loads safely and ___________. • Fabricator – primary responsibility is ensuring that the designed members and connections are fabricated economically in the shop or field as required. 1CE 405: Design of Steel Structures – Prof. Dr. A. Varma • Contractor/Erector - primary responsibility is ensuring that the members and connections are economically assembled in the field to build the structure. • State Building Official – primary responsibility is ensuring that the built structure satisfies the appropriate building codes accepted by the Govt. 1.2 STRUCTURAL DESIGN • Conceptually, from an engineering standpoint, the parameters that can be varied (somewhat) are: (1) the material of construction, and (2) the structural framing plan. • The choices for material include: (a) steel, (b) reinforced concrete, and (c) steel-concrete composite construction. • The choices for structural framing plan include moment resisting frames, braced frames, dual frames, shear wall frames, and so on. The engineer can also innovate a new structural framing plan for a particular structure if required. • All viable material + framing plan alternatives must be considered and designed to compare the individual material + fabrication / erection costs to identify the most efficient and economical design for the structure. • For each material + framing plan alternative considered, designing the structure consists of designing the individual structural components, i.e., the members and the connections, of the framing plan. • This course CE405 focuses on the design of individual structural components. The material of construction will limited be steel, and the structural framing plans will be limited to braced frames and moment resisting frames. 1.3 STRUCTURAL FRAMEWORK • Figure 1 shows the structural plan and layout of a four-story office building to be located in Lansing. Figure 2 and 3 show the structural elevations of frames A-A and B-B, respectively, which are identified in Figure 1. 2CE 405: Design of Steel Structures – Prof. Dr. A. Varma 35 ft.35 ft. 35 ft.25 ft.25 ft.AFigure 1. Structural floor plan and layoutFrame A -AFrame B-BNPin/hinge connectionFix/moment connection35 ft.35 ft. 35 ft.25 ft.25 ft.AFigure 1. Structural floor plan and layoutFrame A -AFrame B-B35 ft.35 ft. 35 ft.35 ft.35 ft. 35 ft.25 ft.25 ft.AAFigure 1. Structural floor plan and