Curious if anyone is aware of a decent-quality source of embodied carbon emission factor data broken down by construction division category cost? I realize this would have to be a very rough / ballpark estimate and/or have a significant range. Curious if there are any sources out there that offer this type of information.
The idea is for a client to convert their ‘dollar spent’ on each (or some) of these divisions into an estimated amount of embodied carbon emissions.
00 FEES & COST PRIOR
01 GENERAL REQUIREMENTS
02 SITE WORK
03 CONCRETE
04 MASONRY
05 METALS
06 CARPENTRY
07 THERMAL & MOISTURE PROTECTION
08 DOORS & WINDOWS
09 FINISHES
10 SPECIALTIES
11 EQUIPMENT
12 FURNISHINGS
13 SPECIAL CONSTRUCTION
14 CONVEYING SYSTEMS
15 MECHANICAL
16 ELECTRICAL
17 CONTINGENCY
19 SUITE DEFICIENCY
20 SITE SPECIFIC COSTS
30 CUSTOMER CARE & WARRANTY
Hey, Ryan! If you’re looking for spend-based factors, I bet environmentally-extended input/output (EEIO) might be a good place to start. The latest EEIO-derived emission factors are available here for the US and here (CIRAIG, nice data structure) or here (gov’t, buried in pdf) for Canada (where it looks like you’re located?).
You might be following this literature already, but here’s a comparison of LCA and EEIO. The tl;dr is that EEIO is more comprehensive but less specific–which seems very appropriate for the use case you’re describing.
There’s a little bit of a crosswalking exercise to get the commodity categories to match up to the CSI format but it’s likely pretty straightforward. If you want to brainstorm about this more offline, reach out. Seems like a fun nut to crack!