We have a concrete supplier who has participated in general industry-wide EPD and has a Sustainability Report (GRI). My understanding is this can contribute to MRc2 Op1-as one product, MRc2 Op2- can contribute by cost, MRc3 Op1-as one product, MRc3 Op2- can contribute by cost.

-Is this interpretation of concrete contribution to MR credits correct?

-Would concrete count as structural material (and have a cap of 30% contribution)