Presentation of Axis System CE-416 Prestressed Concrete Design Sessional Created & Uploaded by Mashrekur Rahman ID: 10.01.03.001 Department of Civil Engineering Ahsanullah University of Science and technology

1. Ahsanullah University of
Science and Technology
Department of Civil Engineering

2. CE-416
Prestress Concrete Design Sessional
Presentation on
Axis System

3. Presented by
Mashrekur Rahman
Student ID:
10.01.03.001

4. Let us draw a line!

5. Engineers Use Axes!

6. What is an Axis?
 An unlimited line, half-line, or line
segment serving to orient a space or a
geometric object, especially a line
about which the object is symmetric.

7. 2D and 3D Axes

8. Uses in Structural Analysis
1
• Represent the
direction of internal
and external forces
2
• Denote the relative
position of structural
members

9. Consider a Simply
Supported Beam
External Forces

10. Local & Global Axes

11. Axial Force in a Beam

12. Rotational Axis

13. Torsional Action in
Structural Members

14. Movement about Rotational Axis
in a Prestressed I-beam

15. Axis System to analyze I-beam
Major Axis
gives the
algebraically
larger moment
of inertia.
Minor Axis
gives the
relatively
smaller
moment of
inertia.

16. Axis System and Prestressed
Concrete
Axis system is
the cradle of
design and
analysis of
Prestressed
Concrete
members.

17. Feel Free To Ask Questions