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The Current Climate of Weather Delays

19 replies [Last post]
Thu, 2008-04-24 04:00
A D
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Nice article on weather delays

http://www.traunerconsulting.com/constructionnetcast/index.php?option=co...

Cheers,

Ravi
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Replies

Thu, 2008-05-01 01:55
#1
A D
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O gr8,

U still Survived.

Bad Luck for us :-(

Just kidding..............

haa haaa haaaaa haaaaaa
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Wed, 2008-04-30 05:02
#2
Charleston-Joseph...
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Ravi,

Always watch for job posting in PP.

You will only know the answere to your question if you give youself an opportunity to work in that particular site in question.

so, try to apply for job in the carribean, they called it storm for typhoon

or lousiana, they called it hurricne as in hurricane katrina for typhoon

or pacific island maybe french polynesia, or try to work in Orissa your very own India, these places are visited by typhoon, hurricane, storms, tornado, etc. etc. any english words and derivatives can do

onnly then that you know.

I know because I stayed for for long in a place visited by typhoons on the average 28 super typhoon per year, including floodings, landslide, flash floods. also i got stuck in the middle of typhoons.

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Wed, 2008-04-30 04:53
#3
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So Charlie,

Is there any site wherein supertyphoon is there outside and internal finishing work is going on. Is there any?

:-(
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Wed, 2008-04-30 03:11
#4
Mike Testro
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Hi All

As I said earlier you need two calendars - one for outside weather sensitive and one for inside dry work.

Best regards

Mike T.
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Wed, 2008-04-30 01:41
#5
Charleston-Joseph...
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Ravi

in your post

"O dear friends,

Typhoon is a force meajure condition. Weather it hit the project or not, u wil get extension of time for that under any circumstances. Cost will be borne by the insurance company, if project is insured."

This is not a correct statement

Scenario 1, you are constrcuting a high rise building complete with structural elements, and external cladding, critical path within internal finishes, then supertyphoon comes but, but,

no hindrance to work internal finishes

even though the thyphoon hit the project site, but the critical activities are not impacted, so no entitlement for eot due to force majuer
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Wed, 2008-04-30 00:21
#6
Mike Testro
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Hi Raviraj

In P3 I am told that it can be done by use of different work patterns.

Your best chance is to start a new thread in the P3 forum regarding working in Hours not Days.

In PowerProject you can work in seconds if you really need to.

Best regards

Mike T.
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Tue, 2008-04-29 23:58
#7
A D
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true Andy,

Thats the question I hav been asking from so many years to fellow planners. If ur planning unit is in days, how to put these hours in a different calender?

Any solution!!

Cheers,

Rav
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Tue, 2008-04-29 09:39
#8
Andrew Flowerdew
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Raviraj,

If you’re modelling different working hours for different days and times of the year then as far as I know you have to work in hours and not days - can be a bit of a pain but not the end of the world, I’ve done it often enough.
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Tue, 2008-04-29 08:08
#9
A D
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O dear friends,

Typhoon is a force meajure condition. Weather it hit the project or not, u wil get extension of time for that under any circumstances. Cost will be borne by the insurance company, if project is insured.

It will be very foolish if someone sets up a calender for typhoon and then asking for acceleration for hitting. Question is for periods like winter in european countries and for Ramadan month in GCC countries, where we have loss of productivity.

P3 cannot set calender for this, otherwise ur calender is in hours rather than days.

So, does anyone has any solutin for this?

If so, plz fwd to all of us.

Cheers,

Ravi
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Tue, 2008-04-29 07:34
#10
Andrew Flowerdew
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Charlie,
We can’t do much about unscrupulous claims, but claiming acceleration is one thing, being able to prove it and hence get paid is another.

If the risk, (time and or money), of a typhoon is a risk to the project completion date then an allowance for it should be made in the programme. It’s no different from any other risk, some will occur, some will not. How the allocation for liability for that risk is dealt with will be determined by the contract.

The flipside of your argument is what if the typhoon did hit and was worse than anticipated. The contractor wouldn’t be claiming for acceleration then?
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Tue, 2008-04-29 07:13
#11
Charleston-Joseph...
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Actually, the duration will remains the same, but the finish will be earlier.

However, if the same priciple will be use during project implementation and what if, this earlier finish than expected will add and add until such that the project earlier finish than expected says, 120 calendar days,

for example, original project completion 29 July 2008, now the project will finish earlier than expected, 30 April 2008.

Unscrupulous organization will take advantage of this situation and will claim "acceleration cost". especially, if proven that the employer/client gain lots of money due to early handover/use of the projects.

and all the contractor did was manipulate the anticipated occurence of typhoon which in actual did not happen.


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Tue, 2008-04-29 06:18
#12
Charleston-Joseph...
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Mike

Your response is a little bit complicated.

The plan was to anticipate non working days for example 3 calendar days due to typhoon might hit the project site.

In actual, the typhoon did not hit the said project site, so remove the non working days and change to working days, the duration of the activities is less than 3 working days.

Unscrupulous organization will take advantage of this situation and will claim "acceleration cost"

This will be ground for unnescessary disharmony among project team.

A better approach must be agreed
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Tue, 2008-04-29 05:00
#13
Andrew Flowerdew
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As long as you’ve got something in the programme for anticpated lost production, it’s better than nothing which is often the norm.

95% of the programmes I see have been based solely on the default calendars and working shift patterns of the software, (with the exception of holidays). Very few include any consideration to anticipated downtime, which as I mentioned in my previous post, can be significant.
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Tue, 2008-04-29 04:24
#14
Mike Testro
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Hi Charleston

As I said - put the anticipated delays in the calendar before commencement and adjust for actual as work proceeds.

If the typhoon misses your site then just take out the non work "typhoon" days in your calendar and you are back to actual - showing an earlier finish than expected.

Best regards

Mike T.
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Tue, 2008-04-29 03:01
#15
Charleston-Joseph...
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I think that if wheather pattern is predictable then it is already part of contractor programs.

For example, in typhoon belt area like Philippines where on average per year 28 typhoon events (some are super typhoon with wind velocity of 180++ km/hr) will pass the country, as experienced and responsible contractor the loss productivity in already included in the original calendar days contract duration.

But then, this is also tricky since usually the pattern of the typhoon will pass leyte, samar, bicol, southern tagalog region, manila, central luzon and will exit to nothern luzon region.

What if your project is not situated in this path of typhoons, for example in Mindanao, Iligan City in particular.

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Sat, 2008-04-26 09:12
#16
Andrew Flowerdew
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The other thing often overlooked is lost working hours to shorter working days in the winter, (if applicable to your part of the world). These too should be modelled in the calendar using shift patterns.

In the UK, (very generally), between October and March lost production for weather and shorter winter working days usually accounts for around 3 weeks lost production. This is rarely reflected in a programme - and then people wonder why the project has got behind programme for no apparent reason!!!!!!!!!!!!!!!!!!

Winter production rates can be used to work out the duration of an activity but it’s much easier if calendars are used as you don’t have to worry about activities moving into a different periods. Just takes abit of time to set up the calendars in the first place.
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Thu, 2008-04-24 06:35
#17
Mike Testro
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Hi Rajirav

I am not up to speed on P3 but I think you can get a similar effect using daily work hour patterns.

Best regards

Mike T.
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Thu, 2008-04-24 06:03
#18
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Yup, true absolutely true.

But, its next to impossible to show in P3 at least.

On almost 99.99% of projects we have planning unit as days rather than hours. In P3, u can show a non-working day, but cannot reduce the number of working hours for a particular day.

Here, in gulf countries, in summer time (From June, July and August) there’s a compulsory 3 hour break-time on account of high temperature. So, we do consider loss of productivity during these days but it cannot be shown by having one more calender wherein the duration is less.

There is a similar problem, during ramadan holidays. Its only half-day work for 28 days during ramadan month. Now, if ur planning unit is day, how u can show the half-day work. U cannot use different having hour as planning unit.

So, above two cases apply for weather delays as well. Even though we can forsee the rainy season for a particular month, but still we cannot show in a program by using different calender.

Also, in case, if we have to stop works on account of sand storm, then we do communicate by writing letters etc. But, in program, its too difficult. Only option is to show low productivity rather than using different calender.

Andrew Dick has done some excellent work on it and he has circulated to most of the PP members. If andrew is still alive on planet earth he may guide all of us further or u may throw some light on it. I will send u his paper, if u can fwd me ur e-mail address.

Am I making sense. If incorrect, please let me know.

Cheers,

Rav
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Thu, 2008-04-24 05:26
#19
Mike Testro
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Hi Raviraj

I agree it is a useful article on the basic principles of the impact of inclement weather on construction progress.

However tt stops short on the subject of HOW incelement weather is impacted on the critical path.

The simplest way to do this is to add the bad weather days to your activity calendar as Non Working days.

Remember that you will need a weather calendar for outside works and a normal calendar to inside works not affected by weather.

If you are adding a weather calendar you will need to set up the anticipated weather first and then change it to the actual to show the effect.

The anticipated calendar will extend the activity durations on the original chart. These have to be brought back to what they were before the actual weather is set in place.

Best practice is to use anticipated weather calendars in the first programme and change to actual as the work proceeds. That way you will be showing a rolling impact of weather stoppages.

Best regards

Mike Testro
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