Module 4 : Deflection of Structures
Lecture 1 : Moment Area method
The deflection at
C
is equal to the tangential deviation of point
C
from the tangent to the elastic curve at
A
(see Figure 4.3(d)).
= moment of areas under
M
/
EI
curves between
A
and
C
in Figures 4.3(b) and (c) about
C
(downward direction)
1
2
3
4
5
6
7
8
9
10
11
= moment of areas under M / EI curves between A and C in Figures 4.3(b) and
(c) about C 
