FIDIC 87 - Clause 12.1

Hi Razi,

IMHO, the correctness and sufficiency of the tender is only applicable to the information provided in the tender. Other exercise that are impractical to conduct at the tender stage are not included in the said clause.

With regards to electrical power load calculation and correponding electrical schematic diagram, we need more information on the real situation before we can have a more valid opinion to share with you.

Cheers,

Charlie

Razi,

The other info we need is:

Is it a design and build contract or Employer design, Contractor build contract?

Thanks Andrew & Charleston

It is not a Design & Built Contractor.

Following are the different parties.
1. Owner.
2. Project Manager
3. Designer.
4. Contractors ( 5 Different Contractor ).

In General layout design drawings (Electrical) many equipments were shown which were not having corresponding power supply line in concerned design drawings.

During construction stage Contractor raised a query for clarification. Designer provided the clarification.

Now does the works resulted from clarification constitutes variation?


Cheers,

Razi Khan

Hi Razi,

On whose side you are in among the 5 parties?

Naturally, the owner will say it is not a variation. The same statement will come from the Project Management, consultant and designer.

Only the contractor will claim that it is a variation.

The above is the natural game play in construction.

For your specific case study, again i find your information insufficient to share any professional opinion.

Cheers,

Charlie

Razi,

It comes down to what you knew at tender or as the saying goes, ought to have reasonably known. It may amount to a variation or alternatively it could be no more than a clarification of an ambiquity on the drawing.

If the electrical equipment was shown on the drawings at tender then it was pretty obvious thay had to have a power connection to them from somewhere - even I could work that one out and I’m not an electrian.

A full electrical design check on the power loadings and cable sizing etc would not in my opinion be a reasonable expection at tender stage. A basic check would.

Go back and look at the tender information and ask yourself questions like:

Have I got the information that would allow me to estimate the power requirements for these machines and hence take a stab at what power connection would be required?

Even if I can, is there any clues as to where the power connections would come from? - overhead, ducted underground, etc.

Once you’ve done that, compare what you’ve come up with against what you’re now being asked to do and if it’s vastly different, claim the DIFFERENCE as additional work.