Section 81 : Contract may be suspended or altered

1) In case the parties to a contract agree, all or any of the portions of the work to be performed under the contract may be changed or amended, the time limit for performing any work under the contract extended, the contract suspended by not making it obligatory to perform any work to be performed under the contract for some time, the work mentioned in the contract may be replaced by another work, or a new contract may be signed as a replacement of the original contract.

2) In case any change or amendment is made in the contract under sub-section (1), a new contract shall be deemed to have been signed, and the contract shall become effective accordingly. In case a new contract is signed in this manner, liability under the initial contract need not be borne except when otherwise provided for in the contract.