Harish,

Based on your statements, the variation resulted from a Design Change from a post tension slab to a flat slab without post tensioning. Based on the design change you need to price the variation in terms of resources (Labour & Materials) and the time impact if any? You also need to consider materials procured and sub-contractors (if any)

Now if there is variance in price (The change will cost you more) and a time impact, you need to read your contract clauses pertaining to variations and claims and just follow the contract. If the contract clauses are unreasonable such as the one you stated above, then your only option is through arbitration or legal later on, but you need to file the claim anyway.

You can substantiate your claim by the following:

You need to demostrate the time impact on your baseline programme (If any)

IFC Drawings showing (before and after design change)

Quantities of conrete and reinforcement (before and after)

Additional Labour as a result of the change

PO and reciepts of materials procured.

Sub-contractors agreement if already awarded

Good Luck!

Hi again, Harish,

refer you sentence:

....Upon such intimation this contract shall stand cancelled and terminated.

I guess you have typed it incorrectly.

it should be otherwise. Reduction in scope should not affect the other terms of the contract.

Check the following:

1) " Variations " Clause -- Regarding the right of client to alter scope. Check whether the client can de-scope your work without any claims from your side.

 2) Claims Clause: did u raise the claim in time? did u procure the material, if any, for the other buildings as per time stated in the approved program?