quick and Rough calculation of Manpower required

Mr. Abdul Raheem,

Can yo please tell me what is 1.95 in your calculation and how it comes?

thanks

Hi Mr.Mike,

Thanks for your reply. But usually we are having 2 stgaes in bidding, 1st We have to submit technical, if it is passed then they will instruct us to proceed for Commercial submission.

So, as you said i could't get tender contract value.

In this case how to estimate the manpower and equipment..?

Please advise me , and send a snapshot if you have.

Thank very much

regards

Siddic K

During the tendering stage, the quantity surveyor prepares this LMES. This are the  Labor, Materials, Equipment, Subcon.

All of this comes from the Unit Price Analysis. This UPA are based in the productivity rate.

Hi Siddic

Take the tender price and extract the Resource hours.

Have a guess at the averege resource deployment - calculate a rough duration.

Best regards

Mike Testro

Please anybody help me....

How to calculate the manpower & duration in tendering stage....???

is have any thumb rule.....?

regards

Siddic

Guys,



Correct me if i am wrong... but here’s the way i understand manpower requirement & scheduling, in steps:



1. Quantity / Production rate = Total Manhours (to get total hours to be consumed)



2. Total Manhours / 8 hrs = Total Mandays (to get total of days for work to be done)



and



3. Total Mandays / Desired no. of skilled crew = No. of Workers (to get the desired no. of days for a work to be Done)



example:



100.00 sqm (qty) of raised floor / (2.60 sqm/hr) PR = 38.46 mh/ (8 hr work/day) = 4.81 mandays / 2 (desired no. of workers) = 2.40 days



or say; for a 100 sqm of raised flooring installation i will be needing 2 skilled worker and work duration will be just 2 day.



Steps 1 & 2 has a fixed value for qty, production rate & work/day, only the value for the desired no. of workers will be determined by the planner or scheduler if he/she wants the duration longer or shorter.



Thanks.

Did I just read 214 steel fixers and 210 carpenters for a maximum floor area of 2000 m2 at a time?

Did you mean at a time?????



I am not surprised at all!

Ever heard of trade stacking? Productivity loss with increased numbers? labour per m2? Optimum Crew Sizes????Tower Cranes? Tower Crane capacity? Logistical constraints in General?????



I am not surprised to see what you wrote knowing where you’re coming from. This is a concept that people use blindly round here(Middle East, Gulf, call it whatever you want)to approximate manpower with no consideration whatsoever to the parameters of a project, to productivity in general or capacity.

They think that the more labourers they throw in the faster they will be...



For the project you just mentioned I’d be even able to get to third of the manpower you mentioned and still finish on time..

Now I wonder why contractors round here barely make any money.

Hi Abdul



You have to relate your resource levels to the cost plan which will show you the remaining values of the several trades involved.



Take each trade total and remove the OH&P.



Apply a reasonable percentage that represents the labour content of the value to get to the labour value.



Divide the labour value by the average rate per hour for each trade and you will get the total labour hours - divide this by the hours in the working day and you will get the number of resource days.



These days can be allocated pro rata to the activity durations and the calculation balanced by a reasonable gang size.



Best regards



Mike Testro