"3. Increase in contract sum for developing upper storeys of 2/8 Queensberry Street as residential flats
"… any obligation (whether arising from any enactment, or from any rule of law or from, or by reason of any breach of, a contract …) to make reparation for loss, injury or damage caused by an act, neglect or default shall be regarded for the purposes of section 6 of this Act as having become enforceable on the date when the loss, injury or damage occurred."
"( a ) time occurring before the commencement of this Part of this Act shall be reckonable towards the prescriptive period in like manner as time occurring thereafter, but subject to the restriction that any time reckoned under this paragraph shall be less than the prescriptive period."
"If, after the appropriate date, an obligation to which this section applies has subsisted for a continuous period of five years—( a )without any relevant claim having been made in relation to the obligation, and ( b ) without the subsistence of the obligation having been relevantly acknowledged, then as from the expiration of that period the obligation shall be extinguished."
"Subject to subsections (2) and (3) below, any obligation (whether arising from any enactment, or from any rule of law or from, or by reason of any breach of, a contract or promise) to make reparation for loss, injury or damage caused by an act, neglect or default shall be regarded for the purposes of section 6 of this Act as having become enforceable on the date when the loss, injury or damage occurred."
"In the computation of a prescriptive period for the purposes of any provision of this Part of this Act—( a ) time occurring before the commencement of this Part of this Act shall be reckonable towards the prescriptive period in like manner as time occurring thereafter, but subject to the restriction that any time reckoned under this paragraph shall be less than the prescriptive period."