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Design of Steel Structural

803459-3

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Mohammed Alsabban masabban@uqu.edu.sa

Office : 1153

Ext. 1142

Mobile 0-5555-10-233

Office Hours:

Sun 8am:10am Tue 11am:12 noon

Wed 5pm:6pm

mailto:masabban@uqu.edu.samailto:masabban@uqu.edu.sa

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Text Book: Structural Steel Design

Authors:

Jack C. McCormac and

Stephen F. Csernak

Publisher: Pearson

Edition: Fifth (International)

Year: 2012

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Manual 14thedition of the Steel Construction Manual

(AISCM)

Based on the 2010 Specification for Structural

Steel Buildings (ANSI / AISC 360-10), (AISCS)

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Topics Covered During ClassS/N Topic title Lecture

Hours

Weeks

(Equivalent)

1 Introduction to Structural Steel Design 2 0.67

2 Specifications, Loads, and Methods of Design 1 0.33

3 Analysis of Tension Members 3 14 Design of Tension Members 3 1

5 Intro to Axially Loaded Compression Members 3 1

First Term Exam 1 0.33

6 Design of Axially Loaded Compression Members 2 0.67

7 Design of Axially Loaded Compression Members (Continued) and Column

Base Plates3 1

8 Introduction to Beams 2 0.67

Second Term Exam 1 0.33

9 Design of Beams for Moments 3 1

10 Design of Beams-Miscellaneous Topics (Shear, Deflection, etc) 3 1

11 Bending and Axial Force 3 1

Third Term Exam 1 0.33

12 Bolted Connections 2 0.66Forth Term Exam 1 0.33

13 Eccentrically Loaded Bolted Connections and Historical Notes on Rivets2 0.67

14 Welded Connections 3 1

Fifth Term Exam 1 0.33

Review 3 1

Final Examination 2 0.67

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Advantages Great Strength

Light weight

Ease of fabrication

Uniformity

Elasticity

Permanence

Ductility

Toughness

Additions to existing structures

Ability to be fastened together by several simple connectors

Adaptation to prefabrication

Speed of erection

Ability to be rolled into wide variety of sizes and shapes

Reuse

Scrap value

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Structural Steel

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Disadvantages Corrosion

Fireproofing Cost

Susceptibility to buckling

Fatigue

Brittle fracture

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Structural Steel

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First Completely Framed with

Structural Steel BuildingCompleted in Chicago in 1890

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Historical Note

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Rolled-steel shapes

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Cold-formed shapes

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Concrete floor slabs Cast on formed steel decks

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Metric Units The metric equivalents of the standard U.S.

shapes are provided in section 17 of AISCM

W920 X 449 means 920 mm deep and weight

449 kg/m

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Stress-Strain Relationships Typical stress-strain diagram for mild or low-

carbon structural steel at room temperature

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Stress-Strain Relationships Typical stress-strain curves

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Brittle steel Typical stress-strain diagram for brittle steel

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f f

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ASTM Specification for Structural Shapes

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f d l d

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Part of detail drawing

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Part of erection drawing

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Responsibilities of the Structural

Designer Safety

Safely support loads

Control deflection

Control vibrations

Cost Standard size members

Simple connections and details

Low cost maintenance

Constructability

Learn detailing Learnt fabrication

Learn erection of steel

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Building Code and Specifications Must refer to Building Code and Specifications

Local Building Code and Rules of

Municipalities

AISCS will be used for Structural steel

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Loads Accurate estimation

Worst possible combinations

If no local code

use ASCE 7 (ANSI 58.1Standards)

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Dead Loads

Other are found in part 17 of AISCM

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Live Loads Typical minimum uniform table (p.55)

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Live Loads Typical Concentrated Live Loads table 2.3 p55

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Impact Impact factor (p. 56)

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Environmental Loads Snow

Rain

Wind

Earthquake

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Two Design Methods LRFD (Load and Resistance Factor Design)

Reduction factor

Nominal Strength Rn

Computed factored force Ru Rn Ru

ASD (Allowable Strength Design)

Safety factor

Largest computed force Ra

Ra

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Combined Loads

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Combined Loads

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