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BK80A2303 Steel Structures II, 5 cr 
Code BK80A2303  Validity 01.08.2016 -
Name Steel Structures II  Abbreviation Steel Structure 
Credits5 cr   
TypeBasic studies  
  Grading scaleStudy modules 0-5,P/F 
  Eligibility for post-graduate studiesno
    Allowed to study several timesno
Organisation LUT School of Energy Systems 

Timo Björk 

Description by Study Guide

Location: Lappeenranta


M.Sc. (Tech.) 1



Teaching Language 


Teacher(s) in Charge 

Timo Björk, D.Sc. (Tech.), Professor


After completing the course, students can design of welded structures for demanding
applications, considering also fabrication requirements, which means that they can:
- choose the purposeful analyzing method for fatigue design of welded joints
- design of the plated (welded and cold formed) structures considering stability
- design the structures and joints by using plastic limit state method
- evaluate the risk of brittle fracture, especially for arctic structures
- design of beams considering also torsion, warping, distortion, shear lag, etc.
- optimize structures, especially considering the potential of high and ultra high strength steels
- design of bolted connections


The physical background for fatigue design of welded joints. Theoretical background and
design (EC3) for buckling of plates, columns and beams. Plasticity theory of beams, frames
and plates (yield line method). Numerical methods for analyzing of brittle fracture
considering the material properties of welded joints. Theory of thin walled structures.
Practical approach for design and multi-objective optimization of welded structures
considering the global structural behavior and details and the potential of high strength
materials. Failure modes of bolded joints.

Teaching Methods 

Lectures 42 h, laboratory work 4 h including e.g. fatigue failure demonstrations of welded constructions, guided exercises 14 h, exercises and homeworks individually and in groups 70 h. Total workload 130 h.

Examination in Examination schedule (Yes/No) 


Examination in Moodle (Yes/No) 


Examination in Exam (Yes/No) 


Assessment scale and assessment methods 

0-5, examination 60 %, exercises 40 %.

Course Materials 

Lecture material in Moodle, Eurocode 3, A. Hobbacher: Recommendations for Fatigue Design of Welded Joints and


Recommended BK80A2202 Teräsrakenteet I and BK80A2701 Lujuusoppi.

Places for exchange-students? (Yes, number/No) 


Places for Open University Students?(Yes, number/No) 



Current and upcoming courses
Functions Name Type cr Teacher Timing
  Steel Structures II  COURSE  Timo Björk 
07.01.20 -17.04.20 -

Upcoming exams
Functions Name Type cr Teacher Timing
Register Steel Structures II  EXAM  Timo Björk 
21.04.20tue 16.15-19.15