Assertion Contradicted AI assessment confidence: 90% certainty 4/5 debate potential 2/5

Leah Ellis: Labor represents 80% of concrete's total installed cost

Leah Ellis · The complex path to market for low-carbon cement · Oct 17, 2024 · at 13:59

Sublime Systems CEO Leah Ellis explains why green premiums on cement have minimal impact on total building construction budgets.

0:00 / 0:18exact quote · 18.7s

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“The total installed cost of concrete is, is 80% labor, and so even if there's a premium on the cement part, once you roll that into concrete, and then concrete's a very small part of the building, and then, you know, but it is a big part of the carbon footprint, so if you're looking at it holistically, it's a small price to pay for a big impact”

quote is from the automated transcript, cleaned for reading: filler sounds and stutters are removed, nothing is rephrased. names can be misheard (the analysis reads context, assessments check outside sources). how →

The claim, plainly

Labor accounts for approximately 80% of the total installed cost of concrete.

a quote alone can be ambiguous, so this restates it with the references and context of the conversation around it resolved. AI-written; the tape below the player is the source.

Assessment

Standard construction cost estimation benchmarks (including RSMeans/Gordian unit cost data, ACI, and structural engineering literature) consistently show that labor does not account for 80% of total installed concrete costs. Across U.S. markets, direct labor typically represents 40% to 60% of the total installed cost of concrete (reaching 60% to 70% only in select high-wage, heavily unionized metro markets), while materials (ready-mix, rebar, forms) and equipment account for the remaining 40% to 55%.

RSMeans and Gordian estimating databases show direct labor accounts for 40% to 60% of total installed concrete costs across most U.S. markets, reaching 60% to 70% only in high-wage areas.
Structural concrete cost distribution data from ACI and academic studies confirm that materials and equipment consistently comprise 40% to 55% of total installed cast-in-place concrete costs.

Checked against

[1] nationalsteelbuildingscorp.com [2] homeguide.com [3] facebook.com [4] evensonconcrete.com [5] angi.com [6] upc.edu [7] crsi.org [8] countbricks.com

"labor accounts for" "cost of concrete" OR "installed cost of concrete" "cost of concrete" "labor" 80 percent OR "70%" OR "80%" installed cost of concrete labor material breakdown percentage "installed cost of concrete" cement percentage "formwork" "labor" percentage of total concrete cost

assessed as of 2026-09-02

This assessment is an AI reading of a public statement, made against the cited references with the confidence shown. It can be wrong. The quote, the tape and the references are all on this page; if something is off, use report an error below. full disclaimer →

Mentioned

concrete labor

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Prediction Open · timeframe Oct 2029

Ellis: European carbon regulations will double the price of cement

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Leah Ellis Oct 17, 2024 ▶ 7:21 The complex path to market for low-carbon cement

Insight

Ellis: Low-carbon cement green premiums are negligible for building owners

“90% of the cost of cement being labor, and only five percent being materials costs, even, even as these new technologies for making cement you know, until they get to scale, they're going to have some sort of green premium associated with them, but that green …”

Leah Ellis Nov 17, 2022 ▶ 41:54 Fixing cement’s carbon problem

Insight

Sublime CEO: Standards are not enough; concrete workers reject stiff mixes

“These performance-based standards, the ASTM, the ACI, all of these things are necessary, but not sufficient in the eyes of the concrete subcontractor, because they have to make sure it finishes in a way where it doesn't hurt that man's elbow, because if you ge…”

Leah Ellis Oct 17, 2024 ▶ 20:31 The complex path to market for low-carbon cement

Assertion Supported

Ellis: Section 45Q provides $80/ton for point-source capture that Sublime cannot claim

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Leah Ellis Oct 17, 2024 ▶ 32:29 The complex path to market for low-carbon cement

Opinion

Ellis: Carbon capture is the only way to decarbonize Portland cement

“There's almost no way around that except for, you know, post-combustion carbon capture. If you're making Portland cement.”

Leah Ellis Nov 17, 2022 ▶ 17:53 Fixing cement’s carbon problem

Insight

Ellis: SCMs can only replace about 30% of Portland cement

“So you can only blend about 30% in before you start reducing, you know, diluting the performance.”

Leah Ellis Nov 17, 2022 ▶ 24:12 Fixing cement’s carbon problem

Leah Ellis: Labor represents 80% of concrete's total installed cost

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