Scrap-led routes, EPDs and what a contractor can actually specify this year.
Measure before you claim
An environmental product declaration turns embodied carbon from a marketing figure into an auditable number tied to a specific mill and heat.
The scrap ceiling
Electric arc routes cut emissions sharply, but scrap availability and residual copper set a practical quality ceiling for reinforcement.
Design for disassembly
Bolted connections and documented sections make the next building the recycling plan for this one.