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Design of Steel Structural
803459-3
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Mohammed Alsabban [email protected]
Office : 1153
Ext. 1142
Mobile 0-5555-10-233
Office Hours:
Sun 8am:10am Tue 11am:12 noon
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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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