Engineers encounter embodied carbon design decisions at specific points along a project, and the relevant task differs at each point.
Setting a carbon goal is a pre-design activity. Choosing a structural system is a schematic-design decision. Writing GWP limits into a spec is a construction-documents task. Verifying submittals is construction administration.
The hub follows the standard design lifecycle and places each resource on the phase where an engineer first needs it.
Organizing the resources by design phase ties each one to the point in a project where it is used, and it places the early-phase resources first, where carbon decisions have the greatest impact on design.