Department of CE, U18CE506 Design of Steel Structures
KITSW 5CE2 AY:2022-
23
CDT2 - LECTURE SUMMARY
CDT2 1.Design philosophies - Working stress, Limit state, Ultimate
load methods,
Topics Covered
Design Philosophies of Steel Structures is for achieving the
Motivation
design objectives, the design shall be supported characteristic
(Why you values for material strengths and applied loads (actions), that
(students) should take into consideration the probability of variations in the
learn these material strengths and in the loads to be supported
topics?)
Lecture Learning Outcomes (LLOs):After completion of this lecture, you
should be able to…
LLO1
On topic
Illustrate the design considerations involved in the design philosophies- of
1 structural steel.
CDT2 – Lecture Summary – Key Takeaways
Design Philosophies of Steel Structures specifies that the design values are derived
from the characteristic values through the use of partial safety factors, each for
material strengths and for both. In the absence of special concerns, these factors
shall have the values given in this section the material the fabric, the kind of load
and the limit state being considered. The dependability of design is ensured by
satisfying the requirement
Three Major Design Philosophies
A design philosophy is a set of assumptions and procedures which are used to meet
the conditions of serviceability, safety, economy and functionality of the structure.
Several design philosophies have been introduced from different parts of the world.
Some of the design philosophies that has been used by engineers are
Working Stress Method (WSM)/ Allowable Stress Design (ASD)
Ultimate Load Method (ULM)
Limit State Method (LSM)
CDT2 – Lecture Summary
Methods of Structural Analysis(Cl.4.1.1) page 22
Elastic analysis in accordance with cl.4.4
Plastic analysis in accordance with cl.4.5
Advanced analysis in accordance with Annex.B.
Dynamic analysis in accordance with IS 1893 (Part 1)
Design Philosophies:
Working stress method (WSM)
Ultimate load design (ULD)
Limit state design (LSD)
Working stress method (WSM)
The method basically assumes that the structuralmaterial behaves as a linear
elastic manner, and thatadequate safety can be ensured by suitably restrictingthe
stresses in the material induced by the expectedworking loads on the structure.
Stress strain relation is considered linear till the yieldstress
Dr. S. Sunil Pratap Reddy Page 1 of 3
KITSW 5CE2 AY:2022-
23
CDT2 - LECTURE SUMMARY
CDT2 1.Design philosophies - Working stress, Limit state, Ultimate
load methods,
Topics Covered
Design Philosophies of Steel Structures is for achieving the
Motivation
design objectives, the design shall be supported characteristic
(Why you values for material strengths and applied loads (actions), that
(students) should take into consideration the probability of variations in the
learn these material strengths and in the loads to be supported
topics?)
Lecture Learning Outcomes (LLOs):After completion of this lecture, you
should be able to…
LLO1
On topic
Illustrate the design considerations involved in the design philosophies- of
1 structural steel.
CDT2 – Lecture Summary – Key Takeaways
Design Philosophies of Steel Structures specifies that the design values are derived
from the characteristic values through the use of partial safety factors, each for
material strengths and for both. In the absence of special concerns, these factors
shall have the values given in this section the material the fabric, the kind of load
and the limit state being considered. The dependability of design is ensured by
satisfying the requirement
Three Major Design Philosophies
A design philosophy is a set of assumptions and procedures which are used to meet
the conditions of serviceability, safety, economy and functionality of the structure.
Several design philosophies have been introduced from different parts of the world.
Some of the design philosophies that has been used by engineers are
Working Stress Method (WSM)/ Allowable Stress Design (ASD)
Ultimate Load Method (ULM)
Limit State Method (LSM)
CDT2 – Lecture Summary
Methods of Structural Analysis(Cl.4.1.1) page 22
Elastic analysis in accordance with cl.4.4
Plastic analysis in accordance with cl.4.5
Advanced analysis in accordance with Annex.B.
Dynamic analysis in accordance with IS 1893 (Part 1)
Design Philosophies:
Working stress method (WSM)
Ultimate load design (ULD)
Limit state design (LSD)
Working stress method (WSM)
The method basically assumes that the structuralmaterial behaves as a linear
elastic manner, and thatadequate safety can be ensured by suitably restrictingthe
stresses in the material induced by the expectedworking loads on the structure.
Stress strain relation is considered linear till the yieldstress
Dr. S. Sunil Pratap Reddy Page 1 of 3
