Final answer:
The construction contract in an ABIC contract commences when both parties sign the contract or a specified start date. It ends at 'practical completion', when the project is completed according to the contract term, except minor defects.
Step-by-step explanation:
In an ABIC contract (Architects Building Industry Contract), the commencement of the construction contract is typically specified in the signed contract itself, often upon the date when both parties have signed the contract or a specified start date. The contract continues until the 'date of practical completion', which is when the project is completed according to the contract terms, except for any minor defects that need to be rectified. Practical Completion is one of the main terms in an ABIC contract and it signifies the end of the construction contract.
Learn more about ABIC contract