From: Measuring circularity: evaluation of the circularity of construction products using the ÖKOBAUDAT database
Assumptions made
(1)
\(\mathrm{SM}={F}_{R}{M}_{B}\)
(2)
\(\frac{U}{{U}_{\mathrm{av}}}=1\)
(3)
\({K}_{0}=0\)
(4)
\(L\le {L}_{\mathrm{av}}; {L}_{\mathrm{av}}=50 \mathrm{years}\)
(5)
\({E}_{F}={E}_{C}=0.75\)