ENCE 455 – Design of Steel Structures

Dr. Chung C. Fu, P.E.

Spring 2004, TuTh 12:30-1:45pm
EGR (Engineering Classroom Bldg.) 2112

Office: S1119 Office Hour: TuTh 1:45-3:45pm
Phone: 301-405-2011
Fax: 301-314-9129
Email: ccfu@eng.umd.edu

NEWS

1.      Homework #1 assigned 2/4/04, due 2/12/04

2.      Project assignment #1 to find snow load and wind load of College Park, Md and design tension members

3.      Homework #2 assigned 2/19/04, due 2/26/04

4.      Kim Building site visit @12:30 pm 2/24/04

5.      Mid-term #1 @12:30 pm 3/4/04 Thursday

6.      Homework#3 assigned 2/26/04, due 3/9/04

7.      SHA visits @1:15 pm 3/11/04

8.      Homework#4 assigned 3/18/04, due 4/1/04

9.      Project 2nd meeting in the week of 4/5

10.   Homework #5 assigned 4/1/04, due 4/13/04

11.   Mid-term #2 @12:30 pm 4/13/04 Tuesday

12.   Final @1 pm 5/14/04 Friday; Project due on the same day; Homework #6 due

Course Summary:

  • Behavior and design of members subjected to fatigue, and combined bending and compression; plate girders, composite beams, open-web joists and connections
  • Methods of allowable stress design (secondary), and load and resistance factor design (primary)
  • Framing systems and loads for industrial buildings and bridges

Course Goal:

  • To provide student with understanding the steel material and the behavior of steel members and structures
  • To teach the student about structural loading, load combinations, and load paths, about how to design structural steel systems, and how to use the current building codes and design specifications
  • To satisfy ABET requirement with an ability to design a system to meet desired needs, to function on design teams, and to identify, formulate, and solve engineering problems
  • To provide an understanding of professional and ethical responsibilities

Course Workload:

  • Readings (textbook, selected journal papers, additional handouts)
  • 6-8 Homework assignments (consisting of: textbook problems, MathCad, spreadsheets)
  • 1 design project
  • 3 exams (schedule and format to be determined)

Attendance:

               Attendance is mandatory and will be checked.  All Students are expected to attend lectures and scheduled laboratory.  (Notify me in advance if you cannot make it)

Text book:
Steel Structures: Design and Behavior, 4th Edition by Salmon & Johnson, Published by: Prentice-Hall

AISC LRFD Manual of Steel Construction – 3rd Edition , Published  by: AISC

Prerequisites:
ENCE355 Introduction to Structural Design (or equivalent course).

Syllabus for Spring 04

1. Introduction: Loads, Specifications & Codes, Design Philosophy, Properties of steel (Chapters 1 and 2) – 2 weeks

·        Introduction, engineering design process

·        Loads, gravity and lateral systems

·        Loads (gravity, snow, rain, wind)

·        Steel material & shapes, specs & codes

·        Design philosophies, LRFD/ASD

·        Introduction of Part I of AISC LRFD Manual

·        Handout of Project

(Architectural Drawings in pdf: A-1, A-2, A-3, A-4, A-5; Structural Drawings in pdf: S7, S-8: AISC in excel: AISC-01thru07, ASCE7 in doc: AISC7Ref)

2. Design of Tension Members, LRFD (Chapter 3) – 1 week

·        Tension members: Net area, load transfer

·        Tension members: Shear lag, stagger

·        Tension members: Block shear, LRFD examples

·        Homework #1 (Salmon & Johnson 3.11, 3.16; assigned 2/4/04, due 2/12/04, Results: 3.11, 3.16)

·        Handout of Project (AISC in excel: AISC-28, Computer model pictures 1, 2, 3)

3. Design of Compression Members, LRFD (Chapter 6) – 2 weeks

·        Columns: development of column strength curve

·        Columns: effective length, design examples

·        Homework #2 (Salmon & Johnson 6.4 Cases 3 and 4, 6.9 Part (a) and (b), assigned 2/19/04, due 2/26/04, Results: 6.4, 6.9)

·        Columns: local buckling

·        Homework #3 (Salmon & Johnson 6.16, 6.19 Part (a) and (b), assigned 2/26/04, due 3/9/04, Results: 6/16, 6.19)

·        Handout of Project

(Architectural Drawings in pdf: A-2, A-3; Structural Drawings in pdf:  S-5, S-7, S-8; AISC in excel: AISC-20thru27)

*** Mid-Exam 1

4. Design of Laterally Supported Beams, LRFD (Chapter 7) – 1 week

·        Beams, laterally supported: LRFD design examples

·        Beams: deflection

5. Design of Laterally Unsupported Beams, LRFD (Chapter 9) – 1 1/2 weeks

·        Beams, laterally-torsional buckling (LTB): unbraced length

·        Beams: LTB design examples

·        Beams: non-compact, shear

·        Homework #4 (Salmon & Johnson 7.6, 9.8 Case 8, 9.22 use LRFD & Fy=50 ksi, assigned 3/18/04, due 4/1/04, Hint, Results: 7.6, 9.8, 9.22)

·        Beams: biaxial bending

·        Steel joists

*** Spring Break

6. Composite Steel-Concrete Construction – 1  1/ 2 week

·        Computation of Elastic Section Properties

·        LRFD Design Procedure

·        Homework #5 (Salmon & Johnson 16.1 Case 6, 16.2 Case 6, 16.4 Case 12 assigned 4/1/04, due 4/13/04, Results: 16.1&2, 16.4)

 

(6. Design of Beam-Columns, LRFD (Chapter 12) – 1 1/ 2 weeks

  • Deck, beam-columns: interaction equations beam-columns
  • Beam-columns; LRFD examples)

*** Mid-Exam 2

·        Handout of Project

(Architectural Drawings in pdf: A-2, A-3; AISC in excel: AISC-09thru13)

 

7. Structural Fasteners and Welds (Chapters 4 and 5) - 2 weeks

  • Fasteners: bolts, LRFD, bearing
  • Fasteners: bolts, LRFD, slip-critical
  • Fasteners: eccentric shear
  • Welds, weld symbols
  • Welds: capacity, fillets

8. Design of Connections, LRFD (Chapter 13) - 2 weeks

·        Connections: shear

·        Connections: standard framed

·        Connections: base plates

·        Homework #6 (Salmon & Johnson 4.10 (a) & (c), 5.4 (a) A572 Grade 42 steel, F7X weld, (b) A514 steel, F11X weld due 5/14/04)

·        Handout of Project

·        (Structural Drawings in pdf: S2, S6, S3, S4)

*** Project due

*** Final

Footnote: 3 Exams. - 45%, Homework - 40%, 1 Project – 15% Total 100%

Click here to E-mail questions or comments.

by Chung C. Fu
Last Modified 5/10/ 2004