Question 1 (60 marks) The works for the Construction of Punggol Mall were completed. The Superintending Officer ("SO") issued a Substantial Completion Certificate. Thereafter, there was an inspection by the Authorities prior to issue of the Temporary Occupation Permit ("TOP"). The Authorities requested for handrails to staircases for safe use of the staircases. The SO instructed the Contractor to carry out the installation of handrails to all staircases as a variation. Upon completion of the variation work, the Contractor submitted a Payment Claim in accordance to the contract. The SO inspected the handrail work and was not satisfied with the work and required changes. As the handrail was not completed to SO's satisfaction, the SO did not certify payment and no Payment Response was issued. In compliance with the Security of Payment Act ("SOP Act"), the Contractor issued a Notice of Intention to apply for Adjudication followed with an Application for Adjudication. Assume that the PSSCOC 2014, SOP Act, SOP (Amendment) Act and SOP regulations apply. SO sought your advice as follows:

b) The SO decided to settle the Payment Claim for the handrails. There were no rates in the contract for payment of the supply and installation of the handrails. Advise the SO on the valuation of variation for payment. (20 marks)