Entitlement to and amount of stage payments
1. Where the parties to a relevant construction contract fail to agree—
(a)the amount of any instalment or stage or periodic payment for any work under the contract, or
(b)the intervals at which, or circumstances in which, such payments become due under that contract, or
(c)both of the matters mentioned in sub-paragraphs (a) and (b) above,
the relevant provisions of paragraphs 2 to 4 below shall apply.