Question

Perform a PERT analysis. For all high-level activities in this project, calculate the following:

1. Optimistic time

2. Most likely time

3. Pessimistic time

4. Expected activity time

5. Standard deviation

6. Variance

7. For one date ahead of most likely completion date, calculate Z and hence the probability of completion by that date.

8. For one date behind the most likely completion date, calculate Z and hence the probability of completion by that date.

The data

Project Mile Stone

Start - 08:00 8/8/2019 & Finish 12 pm 6/4/2020

Mobilization

Start - 08:00 4/9/2019 & Finish 2 pm 25/9/2019

Procurement & construction

Start - 08:00 8/8/2019 & Finish 3 pm 31/3/2020

Demobilization

Start - 07:00 2/4/2020 & Finish 12 pm 6/4/2020

Crushing line

Start - 08:00 8/8/2019 & Finish 3 pm 31/3/2020

Conveyor

Start - 15:00 14/10/2019 & Finish 1 pm 14/1/2020

Infrastructure

Start - 13:00 28/11/2019 & Finish 3 pm 31/3/2020

Civils

Start - 14:00 14/10/2019 & Finish 5 pm 8/11/2019

Structural & Mechanical

Start - 14:00 11/11/2019 & Finish 5 pm 1/1/2020

Electrical

Start - 00:00 13/11/2019 & Finish 1 pm 14/1/2020

Answer 1

SL.NO	NAME	TIME
1	projProject Mile Stone	239 4H
2	Procurement & construction	233 7H
3	Crushing line	233 7H
4	Mobilization	21 6H
5	Conveyor	91 22H
6	Civils	27 3H
7	Structural & Mechanical	51 3H
8	Electrical	31 13H