How to prepare recovery or revised schedule rev.2

HOW TO PREPARE
THE RECOVERY /
REVISED
SCHEDULE
Rev.2
By. Engr. Abdulhay Mohamed Ghanem
Sr. Planning Engineer at Abdullah A. Alkodari Co.

Purpose of this document :
Purpose of this document is to explain
recovery/revised schedule properly by using
Who should read this document
This document is for who is concern about
schedulers, projects controllers and projects managers
The guys who will read and utilize
Primavera software like global changes, export
effect on schedule updating and this equation
BL Start). i.e A%C = (DD – BLST) / (
this document.
Let us start with preparation of
Firstly we have to know what is the meaning of recovery schedule? . We can simply say that the recovery
schedule is a new baseline schedule to rectify any occurred delay to the
whether by using crashing technique or fast track technique.
My example in this document, I am
schedule you have to make sure of the following:
1- No activities are out of sequence.
2- No activities with unsatisfied relation.
3- Remaining early start of all in progress activities is one day after data date
Regarding point no. 3, I will explain why we should fulfill
which will be applied.
4- Detach the baseline and separate the
If the updated schedule has an assigned baseline you shall remove that baseline.
is to explain and help how to use Primavera software to create a
recovery/revised schedule properly by using Primavera tools.
document:
who is concern about Primavera and project management such planners,
projects controllers and projects managers.
utilize this document should be conversant the following tools and options in
global changes, export and import in excel format, percent
effect on schedule updating and this equation Activity % complete = (Data date –
BLST) / (BLF – BLST), Which will be used to conclude the used
Let us start with preparation of recovery schedule.
schedule is a new baseline schedule to rectify any occurred delay to the project to meet contractual end
whether by using crashing technique or fast track technique.
example in this document, I am using percent complete type physical, before prepare your recovery
have to make sure of the following:
are out of sequence.
satisfied relation.
Remaining early start of all in progress activities is one day after data date
Regarding point no. 3, I will explain why we should fulfill this condition during explain the global changes
and separate the current progress.
Data Date is 31.May.15
rimavera software to create a
rimavera and project management such planners,
should be conversant the following tools and options in
percent complete type and its
BL start) / (BL finish –
Which will be used to conclude the used equation in
schedule.
project to meet contractual end
prepare your recovery
Remaining early start of all in progress activities is one day after data date not more.
lain the global changes
Data Date is 31.May.15

Tip: If this message appeared to you.
It means you have to release the old baseline from assigning to the current project.
assign baselines and change to current pro
If this message appeared to you.
means you have to release the old baseline from assigning to the current project.
and change to current project in mentioned tow positions, and then you can delete.
means you have to release the old baseline from assigning to the current project. From project –
ject in mentioned tow positions, and then you can delete.

5- Delete finish constraint of the project.
In projects layout, select dates label then remove date in cell of must finish by.(highlight it then press delete)
6- Press F9 to run scheduling–
scheduling options).
Delete finish constraint of the project.
layout, select dates label then remove date in cell of must finish by.(highlight it then press delete)
– Using retained logic option before scheduling progressed activities (From
layout, select dates label then remove date in cell of must finish by.(highlight it then press delete)
option before scheduling progressed activities (From

Now you can adjust the remaining duration
in progress activities and the relations of not started activities to prepare a proper recovery schedule
accordance with view of PM & CM and site
Tip: If you are using duration type fix duration and units,
you are using duration type fix duration and unit/time you will find your budgeted
planned in your baseline schedule before creating the recovery sc
end of this document how to solve.
Now we will apply the following global change to the current project as follow
a- Original duration of
b- Planned start date and planned finish date to be equal actual date for completed
activities.
Now you can adjust the remaining duration (remember I am using physical type for percent complete type)
in progress activities and the relations of not started activities to prepare a proper recovery schedule
accordance with view of PM & CM and site requirement to close the project on contractual end
ion type fix duration and units, you will find your budgeted total cost still the same. If
you are using duration type fix duration and unit/time you will find your budgeted total cost is more than you
planned in your baseline schedule before creating the recovery schedule. To solve this issue I will explain at the
is document how to solve.
Now we will apply the following global change to the current project as following:
nal duration of completed activities. (Original should = actual)
Planned start date and planned finish date to be equal actual date for completed
(remember I am using physical type for percent complete type) of
in progress activities and the relations of not started activities to prepare a proper recovery schedule in
requirement to close the project on contractual end.
you will find your budgeted total cost still the same. If
total cost is more than you
solve this issue I will explain at the
. (Original should = actual)
Planned start date and planned finish date to be equal actual date for completed

C- Original duration of in progress activities. (
d - Planned start date to be equal actual date for in progress activities.
After complete all steps. Did you asked yourself why
PV of the new recovery baseline? And how we can adjust it to make EV = PV =
67,528,929.48 SAR in my example?
you glanced to the snapshot below
Original duration of in progress activities. (Original = actual + remaining ).
Planned start date to be equal actual date for in progress activities.
After complete all steps. Did you asked yourself why EV at Data date
SAR in my example?(remember I am using percent complete type physical)
you glanced to the snapshot below
actual + remaining ).
Planned start date to be equal actual date for in progress activities.
date (31.May.15) not equal
(remember I am using percent complete type physical). If

In our example I used budgeted values
to the others two options it will not affect on the result as shown in previous snapshot.
From - admin - admin preferences
In our example I used budgeted values with current dates (Default option) even you change it
admin preferences
(Default option) even you change it

What if you are using
bingeing in your baseline schedule before
previous global changes
default to at completion values with current dates
1- EV = PV but not equal
2- The activities percent complete will be changed as well to values more than the actual
activities % complete
Note: in this example,
same data date is 68,876,923.16
Snapshot No.1
What if you are using percent complete type duration?. if you are using this type from
bingeing in your baseline schedule before creating the recovery baseline,
previous global changes then you changed the option of earned value calculation from
default to at completion values with current dates you will find the following:
EV = PV but not equal 68,876,923.16 SAR
The activities percent complete will be changed as well to values more than the actual
activities % complete at site. Please compare between snapshot No.1 and No.2.
in this example, we are using percent complete type duration the earned value at the
68,876,923.16 SAR
using this type from
creating the recovery baseline, then you applied all
then you changed the option of earned value calculation from
will find the following:
The activities percent complete will be changed as well to values more than the actual
at site. Please compare between snapshot No.1 and No.2.
we are using percent complete type duration the earned value at the

Note: The variance between PL and EV in snapshot No. 2
available.
With return to previous example (Physical), and the familiar equation of
– BL start) / (BL finish – BL start)
deferent formula. (Ghanem Equation
Let us see how I concluded this equation
A%C = (DD – BLST) / (BLF
Also OD = ED + RD
Where OD = Original duration of the activity.
ED = Elapsed duration of in progress activity.
RD = Remaining duration of in progress activity.
Then A%C = (DD – BLST) / (ED + RD)
A%C = ED / (ED + RD)
Where ED = DD – BLST for in progress activity.
A%C X ED + A%C X R
A%C X RD = ED – A%C X ED
RD = (ED / A%C) – ED
RD = ED ((1 / A%C)
While ED = DD –
Then DD – BLST = RD / ((1 / A%C)
Then BLST = DD
Snapshot No.2
The variance between PL and EV in snapshot No. 2 due to condition No.3 in page No.
example (Physical), and the familiar equation of Activity % complete = (Data date
BL start) which I will use it to adjust EV = PL = 67,528,929.48
Ghanem Equation)
BLST = DD – (RD / ((1 / A%C) – 1)))
Let us see how I concluded this equation
BLST) / (BLF-BLST) whereas BLF – BLST = OD
Where OD = Original duration of the activity.
ED = Elapsed duration of in progress activity.
RD = Remaining duration of in progress activity.
BLST) / (ED + RD)
A%C = ED / (ED + RD)
BLST for in progress activity.
A%C X ED + A%C X RD = ED
A%C X ED
ED
RD = ED ((1 / A%C) – 1)
– BLST and ED = RD / ((1 / A%C) – 1)
BLST = RD / ((1 / A%C) – 1)
BLST = DD – (RD / ((1 / A%C) – 1)))
due to condition No.3 in page No. 2 is not
Activity % complete = (Data date
67,528,929.48 SAR but in
1)))
BLST = OD

Note: DD, A%C and RD are fixed to fulfill the requirement of a proper recovery baseline
schedule.
If you filtered the completed a
problem will arise (EV not equal PV).
issue.
Export an excel sheet contain the following to work out
from Enterprise menu
DD, A%C and RD are fixed to fulfill the requirement of a proper recovery baseline
If you filtered the completed activities you will find EV = PV. while in progress activities,
problem will arise (EV not equal PV). therefore we will use the previous formula to solve this
Export an excel sheet contain the following to work out the formula. Before exporting, create
from Enterprise menu – user defined fields tow new fields as shown.
DD, A%C and RD are fixed to fulfill the requirement of a proper recovery baseline
V. while in progress activities, the
previous formula to solve this
. Before exporting, create

With reference to third
condition not available the new original duration
vise is correct. So, this availability of this condition is very important to work out formula
third condition in page No.2, if you look to the following you will find
condition not available the new original duration will be less than the actual + remaining while
this availability of this condition is very important to work out formula
Condition is not
available so 67+30
not equal 103
In Primavera Actual
Duration of in progress
activity is the elapsed
duration (ED)
condition in page No.2, if you look to the following you will find if the
will be less than the actual + remaining while
this availability of this condition is very important to work out formula.
In Primavera Actual
Duration of in progress
activity is the elapsed

Let us complete exporting operationLet us complete exporting operation
Condition is available
so 67+30 = 97
Only in progress
activity
n progress

Then add comma from option DataThen add comma from option Data – Text to columns
Copy – Past values

Apply this global change to calculate the new actual start date.Apply this global change to calculate the new actual start date.
Data Date
Delete operation area then
save then import to
Priamvera
Delete operation area then

Then apply this global change to make actual start equal to New Act st.
The result will be as shown below.
Reuse global change No. C & D
The result will be as shown below.
to adjust the original duration, the result will be as the following:
Note
result will be as the following:

Now EV = PV with variance 122,608
Put the contractual end (Must finish by)
Wait for Rev.3
In rev.3 I will talk exhaustively about revised schedule,
schedule and how to use excel sheet
apply some changes on that base line schedule
type of the activities.
122,608 SAR (variance = 0.18% of earned value can be neglected)
(Must finish by), maintain, assign your new created recovery
about revised schedule, How to save actual dates to
and how to use excel sheet to transfer data from updated schedule to ba
apply some changes on that base line schedule as mentioned in page No. 5 about
0.18% of earned value can be neglected)
your new created recovery, enjoy.
How to save actual dates to submit as built
to transfer data from updated schedule to baseline schedule after
as mentioned in page No. 5 about modifying duration

My contacts informaiton
Skype account : en_ghanem
Email : Abdelhay.Ghanem@gmail.com
Mobile Phone : +966-546810855 , +966-593068907

How to prepare recovery or revised schedule rev.2

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