We are a contractor operating under the NEC3 ECC Option C contract. Our site engineers raised a proposal to alter the design of a steel riser for some utility services due to the poor quality of the retaining wall towards the top. The proposal was to look at an alternative restraint location, with the one suggested resulting in a smaller riser and subsequent cost savings.
The PM has taken this information and used it to change the WI by removing the riser entirely, does this still fall under the provisions of the first bullet point of clause 63.11 and that the Prices should not be reduced?