Hi Gary

I am assuming that once a shut down is under way it cannot be opened up.

If so you will need 8 calendars to assign to each of the tasks in the shut down periods.

For the 8 day shutdown you will have to look at your random weather pattern and block out all days between rain days that will give you a clear 8 day dry window in between.

Obviously the shorter the shut down period the more windows will be available.

The rain day allocation should be truly random.

Set out your programme dates in days in a column on a spreadsheet.

In the next column put a rain day for each of the average anticipated rain fall for that week.

Assign a random number to each weekday in the next column -

22.3 22.6 22.1 22.7 22.5 22.4 etc and sort the rain day on the random column.

(It is possible to set up a random number generator between .1 & .7 and the results copied and added to the week number)

Unfortunately I know of no way that a calendar can be copied and pasted into a calendar set up so that will be a job for your Junior.

My Grandson will do it for a fiver.

In real time of course you will be following the mid - short term weather forecasts with great interest and adjusting your calendars accordingly.

Best regards

Mike Testro

Hi Gary

I am assuming that there is no way that water surges can by-pass the works through temporary culverts or over pumping.

I would use the weather records for the previuos 5 years to ascertain average rainfall and number of wet days for each calendar week.

I would then set these anticipated days as a random pattern into the shutdown callendar - remeber that it also rains during weekends and holidays.

This will give you a risk buffer within the programme that will replicate the chance of a planned shutdown falling on a high rain day.

There may be a time lag between rainfall and water arrival at the works.

Best regards

Mike Testro

Hi Edniel

Contract dates such as milestones are usually calendar dates - not working dates - so they could end in a holiday period such as a Sunday.

Other activities that need to have 24/7 work periods are curing & drying out times.

In delay analysis the delay effect should be set on a 24/7 calendar to show the delays in calendar days not work days.

Regarding your 8hr day 6 day week work pattern there are no significant implications in its use.

Best regards

Mike Testro

Hi Anoon.

I enjoy your threads and your usual direct grasp of the topics in discussion.

But why did you ask a question and then discard a reasonable answer?

When you have smelt the coffee in the morning perhaps you can have another think.

Best regards

Mike Testro

Hi Marc

Your response is precisely why calendars are so useful.

There are a number of "embargo" periods that have to be built into any particular construction programme.

Wildlife breeding seasons is just one - Winter Earthworks Embardo periods are another.

The most complex calendar I had to construct was for a building on Sakhalin Island in Russia where every week had a different number of "True Work Hours".

Using powerproject I was able to set a different weekly work pattern onto the calendar that was used for the "External Crew".

Inside after wetheartight a different calendar applied for the "Inside Crew".

Best regards

Mike Testro