
Explore the introduction to structural steel design, covering steel as a material, stress–strain behavior, sections and nomenclature, ASTM designations, toughness, jumbo sections, and designer responsibilities.
This lecture discussed various advantages of steel as a structural material
1) High Strength and Lightweight
2) Uniformity
3) Elasticity
4) Permanence
5) Ductility
6) Toughness
7) Additions to Existing Structures
8) Ease of erection, ease of assembling, etc.
This lecture discussed the various disadvantages of steel as a structural material
1) Corrosion
2) Fireproofing costs
3) Susceptibility to buckling
4) Fatigue
5) Brittle Fracture
This lecture discusses the various standard shapes available in the market
Explore the nomenclature of steel sections, including W, S, M shapes, C channels, L angles, WT, and SS hollow sections, and how height and thickness define size.
Explore section properties of wide flange steel shapes, focusing on table 1.1, decimal versus fractional values for design and detailing, and key dimensions like area, depth, flanges, and web.
Understanding the behavior of Steel in tension
Effect of temperature on Yield Stress
This video discusses the measurement of Toughness with Charpy V-Notch Test
Identify the structural designer's responsibilities: safety, cost, and constructability, and note how safety controls deformations and vibrations, while cost and constructability focus on standard sections and simple connections.
Explore economical design of steel members by prioritizing labor efficiency, open communication among designers, fabricators, and erectors, and using standard sections across locations to reduce labor and assembly costs.
Explore why steel structures fail, emphasizing connections, deflections, and foundation settlements. Construction stage analysis and attention to forces on connections prevent differential settlements and buckling.
Celebrate completing chapter 1 and prepare for a lengthy subjective assignment drawn from the course book; email the instructor to access answer documents.
Explore the differences between specifications and building codes, examine dead loads, live loads, and environmental loads; discuss design philosophies, and illustrate factor loads per ASC seven with three examples.
Clarify how building codes and specifications control design, highlighting that codes are legally enforceable, adopted by authorities, and aim to protect the public with the engineer bearing responsibility.
Define dead loads as forces that remain constant through a structure’s life, including steel frames, walls, floors, roofs, and fixtures, and estimate them using trial-and-error methods and material tables.
Define live loads and distinguish moving versus movable. Describe floor loads—uniformly distributed and concentrated—and reference local codes, with hospital equipment and bridge traffic as examples.
Describe limit states and compare load and resistance factor design (LFD) with allowable strength design, focusing on dead loads, live loads, environmental and transient loads and their load factors.
Explore nominal versus design strength and how a resistance factor reduces nominal strength to design strength, which must exceed the factor load from load combinations, accounting for material defects.
Compute the governing beam load by tributary width and total dead and live loads, including beam self-weight. Apply seven load-factor equations to obtain the maximum factored load per foot.
Calculate the maximum factor load on a column by applying load combinations to axial loads (dead, live, wind, earthquake) and identify a 665 kips design value.
Celebrate completing the first part of the AISC steel design course and maintain momentum as you move into part two to learn the analysis and design of tension members.
Part 1 of 7 of the Steel Design Course will teach you the fundamentals of design.
It will go over structural steel as a material, its behavior, and other properties such as its advantages and disadvantages, different steel sections, stress-strain relationships in steel, the use of modern steel, economical design of steel structures, structural failure, the duties and responsibilities of a structural designer, and navigating the AISC Manual. This section of the course will also cover the several types of loads (dead, live, and environmental), design methodologies (ASD and LRFD), design philosophies (LRFD), and load combinations utilized in steel structure analysis using the ASCE 7 code. We will also look at its practical use through a variety of scenarios. The design methodology used throughout the course will be LRFD. All the lectures in this course will be based on the book "Structural Steel Design, 5th Edition, by Jack C. MacCormac and Stephen F. Csernak". American Institute of Steel Construction (AISC ) 14th Edition will be referred to throughout the course.
Future sections of this course will cover subjects such as tensile member analysis and design, compression member design, flexure member design, different types of connection (bolted, welded) design, and several other topics.
All you need is a decent understanding of structural mechanics and engineering-level mathematics. Students are also expected to have access to the AISC Specification and ASCE 7 code.