Changsha, Hunan · High-rise volumetric steel
Mini Sky City / T30 (Changsha)
Canonical reported case of extreme assembly speed. MMC Sentinel keeps the claim, the missing independent timing, and the unmeasured entropy boundary in the same frame.
- Dwellings
- Unknown / insufficient evidence
- GFA
- Unknown / insufficient evidence
- Value
- Unknown / insufficient evidence
- Duration planned / actual
- — / —
Evidence confidence · 44%
MMC Intensity
88 / 100
Evidence confidence · 44%
Intensity is high if the reported system is accurate. Confidence is limited because the evidence is largely party-claimed.
Not a sustainability rating. High intensity can still fail coherence.
Coherence Score
Unknown / insufficient evidence
Assembly speed is not a whole-system energy or ecological result. Transport, steel intensity and operating performance are not evidenced here.
- Embodied energy · Unknown · unknown
- Transport / logistics · Unknown · unknown
- Construction time · Unknown · unknown
Building anatomy
Factory → transport → site → operation, where known.
- structure
- Factory steel modules — reported
- facade
- Module faces — reported
- bathrooms
- In-module — reported
- mep
- In-module — reported
Timeline
Planned versus actual, when both exist.
Announcement
2010s
Design
—
Approval
—
Contract
—
Manufacture
Reported as concurrent with assembly
Shipping
—
Installation
Reported in days — not independently timed here
Completion
—
Occupancy
Reported
Supply chain
- Manufacturer · Broad Sustainable Building
- Factory · BSB Changsha campus
- System · 3D volumetric
- supplies · mmc:factory:cn:hunan:bsb-changsha → mmc:project:cn:mini-sky-city
Performance
- time
- Reported as exceptionally short assembly — not independently verified in this seed
- embodiedEnergy
- Unknown / insufficient evidence