Forecasting methods

Hi guys,

The best method to avoid calculations of activity weighing is to split activities to as much detail as possible. You will need a quantity surveyor to provide the breakdowns(for eg.):

1) Shuttering & steel fixing

2) Pouring concrete

This way you spend more time in creating schedule the first time, but you will get accurate project status, cash flows & resource loadings and earned values. This may increase no. of activites, but when you organise properly, any number of activities in P3 are no problem.

Moosa, You can check with your QS dept for Valuation Break down for the project and based on the %age break down for major items you can use the weightage to distribute it to your activities based on their quantities, if you develop S-Curve based on cost/value then monitoring of overall progress would be easy.

Moosa,



Activity weighing is agreed % complete against the completion of intermediate stages of the activity.



Like in RCC slab although you can assign the resources lag or the resources curve for consumption, their are steps to be achieved before that like shuttering, placing of reinforcement & than concreting.



So on completion of each phase you assign certain percentage complete i.e after completion of shuttering 20%,rein.50% & conc.100%



This is activity weighing. This is very useful for tracking



Same way you can use this for other activities like External lighting work etc. where you know, on completion of which phase what will be the overall % percentage complete.



Hope this is ok

Thanx for your replies Anand and Dayanidhi Dhandapany.

But pls. explain how the activity weighing can be done?

Thanx

Moosa Ali

Moosa,



Otherwise activity weighing can also help.



cheers!

Moosa, use resource lag to begin the distribution period for the concrete quantity to required duration.

Hi Anand

I got the reports. It is very much useful. Thanx

I have another doubt.

For e.g. If we consider concrete quantity of one activity F.F.Column : its duration is 12 days. Means this duration includes shuttering, steel fixing, concreting etc.

Concreting duration will be only one day.

My question is to forecast the quantity of concrete using; we want to split the activity F.F. column into column shuttering, column steel fixing, column concreting? Otherwise will we get the quantity of concrete of the concreting date?

If we didn’t split this activity the concrete quantity will be divided into its full duration i.e. 12 days. Right? Is there any method to get the concrete quantity without splitting that activity?

Thanking you

Moosa Ali

Hi Ananad,

Pls email me too the files which explains further about the forecasting and S curve kskmampad@hotmail.com

Moosa Ali

Hi Nitin,



a) For forecasting by remaining duration, in schedule report for look-ahead in selection select remaining duration instead of early dates.



b) S curve is generally prepared on the resources consumed per period & cash flow is derived from the same.



If you want will send the files for the same.