Mat 01 Calculator Option 1 – verified LCA tools

Before an LCA tool can be recognised by BREEAM, the tool developer must submit evidence to BRE to verify the tool’s points scored in the Mat 01 Calculator.

The LCA tool is then given its own tab in the calculator, which confirms the maximum score the tool can achieve, if used to its fullest extent. Items coloured green within the calculator are locked because they do not change when using the LCA tool. The items in blue should be edited by the design team to confirm the extent the tool has been used on the project. For RFO schemes, the assessment parts must also be selected.

Items listed as β€˜N’ in column W β€˜Included in assessment?’ cannot be changed to a β€˜Y’, as the LCA tool cannot be used for this element. For example internal doors cannot be assessed by the Green Guide. An element listed asΒ β€˜Y’ can be changed to a β€˜N’ if the LCA tool has not been used for the element in the assessment.

Column S confirms if the assessed building includes the element and should be included. For example if there are no stairs in the assessment, then this element is removed from the calculation by saying β€˜N’ to cell S15 (in the green guide calculator).

12/01/2017 Reference to LCA approved tools updated.