CHAPTER 1: INTRODUCTION part A BFC 43003 Structural Steel and Timber Design Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

How are you feeling? Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Associate Professor Dr David Yeoh Email me at david@uthm.edu.my When? And Who? Section 1 Section 2 Section 6 Time Venue Associate Professor Dr David Yeoh Email me at david@uthm.edu.my Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

What? Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

How much time? Aktiviti Pembelajaran (Learning Activity) Minggu (Week) Jam / Minggu (Hours / Week) Bilangan Jam / Semester (Hours / Semester) Kuliah & Pembelajaran Berpusatkan Pelajar (Lecture & Student Centered Learning) 14 2 28 Tutorial (Tutorial) - Amali (Practical) 3 42 Pembelajaran Kendiri dan Penilaian Formal (Independent Study and Formal Assessment) 46 Lain-lain (Others) 1. Projek (Project) 2. Tugasan (Assignment) 10 JUMLAH JAM BELAJAR (JJB) TOTAL STUDENT LEARNING TIME (SLT) 126 Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Enjoy your course… Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Course content Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

What is Structural Steel? Structural steel is a standard construction material, made from specific grades of steel and formed in a range of industry standard cross-sectional shapes (or ‘Sections’). Structural steel grades are designed with specific chemical compositions and mechanical properties formulated for particular applications. http://www.azom.com/article.aspx?ArticleID=6022 Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Why Good Engineers? Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Outline of this Lecture Types of application of structural steel in construction Types of connection detail Mechanical properties of structural steel Common sections of structural steel Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Types of application of Structural Steel in construction Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

What structural system or structural form is suitable – looking at the required span? Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Multi-storey construction Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Building in Christchurch Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Building in Christchurch under construction FRAME LATERAL BRACING Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Building in Amsterdam 9 storey steel structure Slimdek floor system Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Light-frame construction Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Building in Kluang addition to existing Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Lattice truss with tubular members Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Portal frame Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Office factory in Christchurch steel portal frame concrete precast tilt-panel Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Farm shed in Christchurch steel portal frame 15m span Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Steel portal frame Knee detail Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Steel portal frame Apex connection Column to base Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Simple portal frame Steel lintel for opening 4 to 6 m span Lintel to stud detail Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Light-gauge steel house construction Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Type of connection: pinned and rigid Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Type of construction/structure Simple construction / structure Continuous construction / structure Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Simple structure Assume structure is constructed of elements connected by pinned connections Lateral resistance is provided by bracing, shear walls or lift core Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Continuous structure Elements connected rigidly (moment resisting) Lateral resistance provided by moment resisting frame Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

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Mechanical properties and grade Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Steel grade S235, S275, S355, S450 refers to yield strength, fy (N/mm2) Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Source: Design of structural elements by Chanakya Arya; also in Table 3.1 EC3 Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Material design strength (resistance) Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Compare materials MATERIAL MODULUS OF ELASTICITY (GPa) POISSON’S RATIO Steel 210 0.3 Concrete 14 to 40 0.11 to 0.21 Timber 6 to 15 0.29 to 0.45 Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Common cross-sections of structural steel Universal Column (UC) or UK Column (UKC) Universal Beam (UB) or UK Beam (UKB) Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Aside - a Reminder of Bending Stresses in Beams Stresses increase Linearly from NA Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014 Assoc. Prof. Dr. David Yeoh david@uthm.edu.my 2014 41

Angles and Tee (Equal Angles and Unequal Angles) Channels (Parallel Flange Channels, PFC) Hollow Sections (Square, Rectangular, Circular) Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Common structural form applications of different sections: UB – flexural members: Very efficient sections for resisting bending moment about the major axis UC – axial member: capability to resist axial loads with high radius of gyration about minor axis to prevent buckling PFC – Used for beams, bracing members Angles (equal/Unequal) –– Used for purlins, truss members and bracing members. Hollow sections – Used for truss members, ties and bracing members Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

End of Introduction part A Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Recap what have we learned? Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014

Recap what have we learned? Types of application of structural steel in construction Mechanical properties of structural steel Common sections of structural steel Assoc. Prof. Dr. DYeoh david@uthm.edu.my 2014