The construction of a highway is broken into 14 activities as shown in the following table. Draw a bar chart of this construction project.
Activity ID
|
Description
|
Duration
|
Dependence
|
|
A
|
Survey & Layout
|
6
|
-----
|
|
B
|
Clear route
|
4
|
A
|
|
C
|
Excavate & grade
|
8
|
B
|
|
D
|
Plant & material
|
8
|
-----
|
|
E
|
Install drainage
|
5
|
B, A
|
|
F
|
Lay base-course
|
6
|
B, D
|
|
G
|
Lay pavement-course
|
5
|
F
|
|
H
|
Cut joints & cure
|
3
|
G
|
|
I
|
Dress shoulders
|
5
|
B
|
|
J
|
Make side drains
|
7
|
I
|
|
K
|
Construct curb
|
8
|
J
|
|
L
|
Paint signs on road
|
4
|
J, K
|
|
M
|
Signal & road signs
|
4
|
L
|
|
N
|
Clean up
|
2
|
E, H, K
|
And then compute the total duration of the project and list the critical and non-critical activities.