Lecture 18D

Question 1

Consider a schedule for a project that will take one year , we start by january 2019 to Fininsh in December

Answer 1

When we finish the first the month , we realize we wont be able to finish on time then we postponed for onee month to finish, at the end of second month same has happened we postponed for another one month . This means that we have poor planning

Question 2

This mean we didnt have due diligence in planning

Answer 2

we didnt have a robust plan, We didnt understand and analyze enough the work we wanna do

Question 3

Due diligence

Answer 3

means understanding the work to be done and the ways that it will be done with to (machines , productivity, sequence…)

Question 4

Way of approaching is done by :Work break down structure (WBS)

Answer 4

Tree like structure that explains the work.
For example to build a buildig I shall work on 3 things :
Site prep, underground structure, and above ground structure
Under each one there is activities
Like in site prep u have shoring
In underground u have foundation…

So u will have levels of activities to do

Question 5

The benefits of WBS ( work break down structure)

Answer 5

1-1st u will get activities
2- u will use activities to creaete schedule
3- u use them to find the quantities and thus to find cost
The cost is made up from materials , labor (hrs of work, and wage and productivity)
, and i had overhead cost

Question 6

The process of cost estimation and scheduling and planning are inter-related

Answer 6

true

Question 7

Planning and control takes place in all phases of the project not only in construction

Answer 7

true, it takes place in planning (feasability, budget, cost…), design(value engineeering..) , bidding(control the cost) and construction (planning for the construction to control cost and increase profit..)

Question 8

If i draw the control curve for the client on the project it will be decreasing

Answer 8

in planning i jhave a lot of control ….when construction starts i dont how much it gonna cost any more i lose a lot of control (I commit to the pproject)

Question 9

project control is a continuous proccess there is always update

Answer 9

true

Question 10

If my CEO ask me how the project is going

Answer 10

there is
cost
schedule
safety

Question 11

For the CEO u will say we have a project for for 100 dollars and we are trying to finish for 85 dollars

Answer 11

true

Question 12

when u are sitting with the construction manager

Answer 12

u list for him all the activities , and u tell him that those finished costed that much and those in progress we report spent (how much we spent until now) and we have forecasted , how much the forecasted cost will be .

For each activities we will see whether we finished it at budget , or under budget or over budget
This is called variance analysis-gap analysis ( u see the gap between the actual and the real)

Question 13

U also do cause effect analysis

Answer 13

like if u have overbudget run in some activities , u see what is the cause of this overcost and how it will effect me

Question 14

The above is called cost control

Answer 14

true

Question 15

i Also do the same analysis for shcedule

Answer 15

I will have forecasted duration, actual duration , and forecasted duration

Question 16

Also for the project i have safety, but analysis is much simpler (Here we are quantifying safety)

Answer 16

here i report accidents ( I have levels of matrics) highest matrics is fatality.
also u have
Record of incidents rates : Number of incidents u have for every 200,000 workhours.
What is an incident: it differs , like in canada, if i slip due to water in ground it is considered an incident and it is reported.
In gulf it is not considered an incident

Question 17

Also we have lost time incidents rates (subset of record of incident rate)

Answer 17

Meaning incidents that happpen and cause lost time (like when i slippped it didnt cause lost time)

Question 18

How do we quantify quality

Answer 18

Record number of rejections for completed activities ,
also number of rejections for the submittals
also count the non performance reports ( theA/E inspected something u installed and reported that it will not be able to perform and it requires to be redone.

Question 19

An important point for scheduling is how much time is spent doing a work and how much work is done during this work (productivity)

Answer 19

true

Question 20

Basis used to measure performance of project

Answer 20

people usually use work hour (man hour):
I have 1000 hours to complete a work.
If i reach 500 hrs I look how much of the work i completed.

Question 21

Earned value annalysis

Answer 21

We
WE plot the time vs value of work ( spent , earned(value of completed wok))
We saw if we are earning more or spending more
Also i plot planned time vs earned time to see if i am behind schedule or ahead of the schedule

Question 22

How do we determine the earned value

Answer 22

We look atr the activity, and we see how many subactivities it is made from, and we see how much contribution of each of these subactivities to the main activity ( like if u have a column, u know you will have rebars, concretet., curing.), and i see how much of these subactivities are done and based on that i see how much earned value of the activity i have. (I may do weighted average of the subactivities because some are more main and important than others)

Question 23

When i draw the plaaning curv,

Answer 23

when i get the job

Question 24

when i draw earned and spent curves

Answer 24

at end of each month

Question 25

What happens when I have a change order ( like to add one span)

Answer 25

It depends on the change and how much it will effect , it can lead to change the baseline schedule and cost….

Question 26

I have something that is called trend analysis , meaning i look at my progress from 3 months i am late 40 % , i look now i am late 10% the trend is positive and vice versa

Answer 26

It is important for forecasting , u willl know u will finish in time and vice versa
it is a forecast based on the trends
It can give early warning
Based on that u take decision. Project control

Question 27

At end of the project u do a final analysis with the final data to benefit for future projects

Answer 27

true