for tasks into MS PROJECT. I WILL NOT write about constraints and limitation with this method (for example about flexible and hard constraints and why this is not the best approach). I will just show you how duration is affected when you put those dates into MS PROJECT.

*Manually*or A

*utomatic*schedule. If you choose

*Manually*you will have the whole control over the scheduling and you will not get the whole power of MS Project 2010. For my examples I’ve choose

*Automatic*scheduling mode and it is shown on picture below:

1. Select

*Project TAB*

2. Click on

*Change Working Time*

3. On The

*For Calendar*choose:

*Standard (Project) Calendar*

4. Click on

*Work Weeks*

5. Select

*Default*

6. Click on

*Details*

7. Select days:

*Monday – Friday*

8. Choose:

*Set day(s) to these specific work times*

9. Type

*08:00*in

*From*field and

*16:00*in

*To*field

10. On the same form click

*OK*button

11. On the

*Change working time*click

*OK*button

*Task 1*with start on

*22.3.11*and end on

*22.03.11*, and

*Task 2*with start on

*22.3.11*and end on

*23.03.11*

*Task 1*has duration of 0,5 days, and

*Task 2*duration of 1 day. WHY?

Well it is easy to explain. When I put the same date for start and finish date for Task 1 I said: “I want my task to last 4 working hours”. WHY? Because I put in calendar options (from 08:00 till 12:00) that they will be a 4 hour job. And I also said that duration for one day is 8 hours. WHERE? See picture below:

For

*Task 2*I said that it will start on

*22.3.11*and it will end on

*23.3.11*. Working time will be

*from 08:00 till 12:00 (4 hours)*, so it will be

*2 days X 4 hours = 8 hours*

*Monday*till

*Friday*from

*08:00 – 15:00 (7 working hours)*and I put the same

*start*and

*end date*for

*Task 1*and

*Task 2*as I put before. Duration of

*Task 1*and

*Task 2*will be:

*Task 1*has duration of 0,88 days, and

*Task 2*duration of 1,75 day.

*7 hours*on

*Task 1*

*(because we put that in the calendar; from 08:00 till 15:00).*7 working hours / 8 hours per day in scheduling options = 0,88 days.

*Task 2*we will work

*7 hours*on 22.03.11 and

*7 hours*on

*23.03.11*so it means we will spend

*14 hours*in total. And 14 working hours / 8 hours per day in scheduling options = 1,75 days.

*from Monday till Friday from 08:00 – 17:00 (9 working hours)*. Duration of Task 1 and Task 2 will be:

*Task 1*has duration of 1 day, and

*Task 2*duration of 2,13 day. Duration of one day means 8 hours. We will work

*8 hours*on

*Task 1*

*(because we put that in the calendar; from 08:00 till 17:00).*Something is wrong, isn’t it? From 08:00 till 17:00 is 9 hours and not 8. Well, yes it is. But you cannot work more than 8 hours per day if start and end date are the same because in scheduling options you said that you will have 8 hours

per day. So 8 working hours / 8 hours in scheduling options = 1 day.

*Task 2*we will work 9

*hours*on 22.03.11 and

*8 hours*on

*23.03.11*so it means we will spend

*17 hours*in total. And 17 working hours / 8 hours in scheduling options = 2,13 days. You may ask yourself: “WHAT IS

WRONG NOW!??”.

Well, nothing is wrong. That is the way MS PROJECT works. If your start date is different from end date, MS PROJECT will respect working hours from calendar (in our example it is 9 hours / day) for first, second, third etc day EXCEPT last day (end date) which will last 8 hours (hours per day from scheduling options).

For

*Task 2*I said that it will start on

*22.3.11*and it will end on

*23.3.11*. Working time will be

*from 08:00 till 12:00 (4 hours)*, so it will be

*2 days X 4 hours = 8 hours*

And because the day duration lasts 8 hours (see picture above) MS PROJECT calculates duration in formula 8 working hours / 8 hours per day in scheduling options = 1 day

*Monday*till

*Friday*from

*08:00 – 15:00 (7 working hours)*and I put the same

*start*and

*end date*for

*Task 1*and

*Task 2*as I put before. Duration of

*Task 1*and

*Task 2*will be:

*Task 1*has duration of 0,88 days, and

*Task 2*duration of 1,75 day. Now, you know the duration formula, don’t you? Duration of one day means 8 hours.

We will work

*7 hours*on

*Task 1*

*(because we put that in the calendar; from 08:00 till 15:00).*7 working hours / 8 hours per day in scheduling options = 0,88 days.

For

*Task 2*we will work

*7 hours*on 22.03.11 and

*7 hours*on

*23.03.11*so it means we will spend

*14 hours*in total. And 14 working hours / 8 hours per day in scheduling options = 1,75 days.

*from Monday till Friday from 08:00 – 17:00 (9 working hours)*. Duration of Task 1 and Task 2 will be:

*Task 1* has duration of 1 day, and *Task 2* duration of 2,13 day.

Duration of one day means 8 hours. We will work *8 hours *on *Task 1 * *(because
we put that in the calendar; from 08:00 till 17:00).
* Something is wrong, isn’t it? From 08:00 till 17:00 is 9 hours and not 8. Well, yes it is. But you cannot work more than 8 hours per day if start and end date are the same because in

scheduling options you said that you will have 8 hours per day. So 8 working hours / 8 hours in scheduling options = 1 day.

For

*Task 2*we will work 9

*hours*on 22.03.11 and

*8 hours*on

*23.03.11*so it means we will spend

*17 hours*in total. And 17 working hours / 8 hours in scheduling options = 2,13 days. You may ask yourself: “WHAT IS WRONG NOW!??”. Well, nothing is wrong. That is the way MS PROJECT works. If your start date is different from end date, MS PROJECT will respect working hours from calendar (in our example it is 9 hours / day) for first, second, third etc day EXCEPT last day (end date) which will last 8 hours (hours per day from scheduling options).

See you …..

Thank you very much, Now I understand why…..

Thanks a million

This is the only article which could explain fully and clearly the scheduling problem.

I’ve been reading many articles last few days. But this is the one…

Thank you

Poštovani,

živim i radim u Rijeci. Zanima me da li postoji tečaj ili seminar koji bih mogao pohađati kako bih savladao osnove rada i primjene u MS Projectu 2010?

Ujedno, Imam problem sa instaliranim MS Projectom 2010 na svojim Windowsima 7. Naime očito postoji nekakav bug koji mi onemogućava otvaranje i pregledavanje .mpp fileova, a osim toga pokrenutu aplikaciju ne mogu zatvoriti normalnim načinom već jedino preko Task Managera.

Napominjem da je OS Windows 7 kao i MS Project 2010 kupljen sa valjanom licencom. Čitajući forume primjetio sam da se poprilično ljudi žali na nekompatibilnost 7-ice i Projecta 2010…

U nadi da ćete pomoći savjetom, srdačan pozdrav.

Zoran

Poštovani,

treninzi se održavaju ali neredovito. Mislim da ih drži Algebra! Što se tiče vašeg problema, ne znam što bi Vam rekao. Meni radi sve OK! Pokušajte skinuti verziju s MIS sajta pa onda ukucati Vaš produkcijski ključ! Zaista ne znam o čemu se radi!

Pozdrav,

Nenad