K&K Data Service Inc.Data Center Engineering Lab

Data Center Lab

GB300-Class Data Center Drawings: Electrical, Structural, Network and Liquid-Cooling Reference Designs

Free PDF download of a coordinated AIDC (AI data center) drawing set for a direct-liquid-cooled GPU hall at 136 kW per rack: 12.47 kV one-line diagrams and four-path power distribution, a prefabricated steel structural package, the hall network design, and the liquid-cooling functional P&ID set. No registration, SHA-256 verified.

These documents are published at Design Development — Public Edition P1 status: reference designs for study and evaluation, carrying their own assumptions and open items. They are not construction issues and are not sealed by an Engineer of Record. Reuse follows the copyright and attribution terms stated inside each document. GB300 is a product of NVIDIA Corporation; K&K Data Service Inc. is not affiliated with NVIDIA.

  1. 14 MB · 88 pagesElectrical Drawing Book — PE-P188-page electrical drawing book: 12.47 kV single-line (one-line) diagrams, 2500 kVA transformer details, four-path and six-path distribution to 42-rack GPU zones at 136 kW/rack, UPS and PDU interfaces.SHA-256: A9607E1B2C92F938A8B7912E4EE0761F9FB021D5DF81AB5CC215472BFB9445FF
  2. 84 MB · 170 pagesStructural Document Set — Public Edition P1170-page structural drawing set: design basis and parameters, prefabricated steel building drawings, and full technical specifications for a GPU hall carrying ~1.4 t liquid-cooled racks.SHA-256: A425E24A5A7FAA6F26CED41E27FC209B443301244FD997F8D85C03F921884BDE
  3. 1.6 MB · 75 pagesGPU Hall Network Reference Design — PE-P275-page network reference design for a 90-rack GB300 NVL72 deployment: 30 reissued drawing sheets, an implementation supplement (storage capacity examples, optical cabling checks, acceptance tests) and a full register of engineering inputs still to be confirmed.SHA-256: 7905D4A32EF275C9FEF2B867D49E93EB4AEA3EC6FC7302D9129EDE93BB36E2CF
  4. 3.1 MB · 38 pagesLiquid Cooling Reference Design — PE-P138-page functional P&ID and coordination set for a 90-rack, five-group direct-liquid-cooling layout: cold-source selection trains (dry/wet coolers), CDU groups, six-rack unit details, buffer and transfer design requirements.SHA-256: B9536798D7EB57E9127AD4957708B89E090383E07CA1F7F54AD241E0FA9D58A0
  5. 5 KB · 4 artifacts + READMEBIM Machine-Audit Sample PackFour unedited artifacts from the machine audit of one Revit electrical model: the metadata-only readback that passed, the strict readback that failed the same model (78 systems, zero native AllRefs edges), the 1,539-port register coverage gate, and an AI reviewer's closure verdict with allowed and forbidden claims.SHA-256: C1561E7082C00C2DB96A1F6C15F4458D2544BFADDF8CDAE40E7F96C8DF43EA32
  6. 34 KB · code + datasetStorage-Capacity Model — Companion CodeThe Python capacity model behind the published storage-capacity paper (DOI 10.5281/zenodo.23247527): scenario definitions S01–S14d, 60 unit tests, and a reproduce.py that rebuilds the paper's supplementary dataset and verifies every number against the published copy. Standard library only, MIT license. Also on GitHub (kkkdata/storage-capacity-model) and archived as DOI 10.5281/zenodo.23251772.SHA-256: 28E68E870A0C557BF3CD43EFFA7132313CDDBFE676B0170BC0A7A61178F58E28
  7. 7 KB · 2 pagesGPU Hall Design Readiness ChecklistTwo-page review checklist distilled from the published reference design record: 28 verifiable items across electrical, liquid cooling, water, structural, network, BIM validation and evidence discipline — each item condensing a published analysis. CC-BY-4.0.SHA-256: A96BD36610ECD45F8C68702C92E24FC7DF37BDC77E8713C3D340D3CBF5D8E6D2
  8. 3 KB · 3 templates + READMEMachine-Audit Template PackBlank JSON templates for evidence-gated engineering runs, in the shapes used on our own model audits: a run contract (scope, stop conditions, frozen input hashes), an independent readback, and a closure verdict with an allowed claim and a forbidden-claims list. CC-BY-4.0.SHA-256: FA75D21C267AADC312E8D8B8C528EAA6CC4081F3C02E5B358DEA6E8AF2D9E18A
  9. 97 MB · 3 documentsElectrical + Structural + Network — Combined ZIPThe three original P1 disciplines in one archive (the liquid-cooling set above is published separately).SHA-256: 619F031CD63F497512A4B6E28397FD58778929DE3FA8F4C0880A633ECEBEE068

What Is Inside the Set

The electrical drawing book (E-100/E-300 series, 88 pages) carries the 12.47 kV single-line diagrams, transformer and fuse details (2500 kVA, 12.47 kV–480Y/277 V), zone one-lines for six-path and four-path radial distribution to 42-rack GPU halls at 136 kW per rack, generator feeder interfaces, grounding, and buried-crossing civil interfaces. The structural set (170 pages) contains the design basis and parameters, the prefabricated steel drawings, and the full technical specification. The network reference design (75 pages, PE-P2) carries 30 drawing sheets, an implementation supplement and a register of inputs still to be confirmed. The liquid-cooling reference design (38 pages, added 6 Oct 2026) is the functional P&ID and coordination set for a 90-rack, five-group direct-liquid-cooling layout: cold-source selection trains, CDU groups, six-rack unit details and the buffer/transfer design requirements. All four disciplines describe one coordinated GB300-class facility design — the same program documented across the 106-article Data Center Lab.

Who These Drawings Are For

  • Colocation and data center developers evaluating GB300-class readiness: what 136 kW-per-rack duty actually demands of a building.
  • Electrical engineers looking for a real data center one-line diagram: 12.47 kV service to 480 V four-path distribution, not a marketing block diagram.
  • Mechanical and liquid-cooling engineers studying CDU feeder protection, coolant distribution and the electrical–cooling interface.
  • Network architects planning GPU cluster topology and hall cabling.
  • Structural engineers checking floor loading and steel framing for ~1.4 t liquid-cooled racks.
  • GPU cloud and neocloud founders who need to see a whole coordinated drawing set before hiring anyone.
  • Investors and lenders running technical due diligence on AI data center projects.
  • General contractors and estimators quantifying scope from a construction-drawing-style set.
  • Utility and interconnection planners reading the load architecture behind a GPU hall service request.
  • OEM and vendor application engineers aligning equipment offers to an integrated reference design.
  • Prefab and modular builders studying a steel building system carrying dense mechanical loads.

K&K builds and modifies this class of facility. If the set maps to a project you are planning, the project record shows the delivery side, and a data-center inquiry starts the conversation.

Release History

  • 9 Oct 2026 — GPU Hall Design Readiness Checklist (28 review items, 2 pages) and Machine-Audit Template Pack (blank run-contract / readback / closure-verdict JSONs) added; new guides: BIM validation check catalog, PG25 coolant properties.
  • 8 Oct 2026 — BIM Machine-Audit Sample Pack (four unedited audit artifacts with a field-by-field README) and Storage-Capacity Model companion code (reproduces the published paper dataset number-for-number) added.
  • 7 Oct 2026 — Network Reference Design updated to PE-P2 (75 pages): all 30 sheets reissued with clarified wording, new implementation supplement, and a full open-items register. PE-P1 (58 pages) remains available for reference.
  • 6 Oct 2026 — Liquid Cooling Reference Design PE-P1 added: 38-page functional P&ID and coordination set (new discipline, first public edition).
  • 28 Sep 2026 — Initial Public Edition P1 release: electrical (88 pages), structural (170 pages) and network (58 pages) sets with published SHA-256 checksums.

Guides to the Set

You can also browse 25 sheets of the set online — zoomable vector drawings with device-by-device explanations.

Questions Engineers Ask

Are these drawings suitable for NVIDIA GB300 NVL72 deployments?

The electrical, cooling-interface and structural basis is designed around 136 kW A/B dual-input, direct-liquid-cooled rack duty — consistent with GB300-class rack systems (~135–150 kW per rack, fully liquid cooled). They are Design Development — Public Edition reference designs: verify every interface against your OEM's current rack data before use. GB300 is a product of NVIDIA Corporation; K&K Data Service Inc. is not affiliated with NVIDIA.

Why aren't these drawings stamped by a Professional Engineer?

Because no published reference design anywhere carries a PE seal — a seal attaches to construction documents prepared for a specific site, client and code jurisdiction, by an Engineer of Record who takes responsibility for that specific project. A public reference design by definition has no site or jurisdiction yet. Stating that status plainly on every sheet is standard professional practice, not a defect: the honest alternative to pretending otherwise. Project-specific, sealable construction documents are engagement work.

Can I build from these drawings?

No. They are published at Design Development — Public Edition P1 status for study and evaluation. They are not construction issues, carry no Engineer of Record seal, and every sheet states its own assumptions and open items.

Do I need to register or pay to download?

No. Every file is a direct download with a published SHA-256 checksum so you can verify integrity.

What electrical architecture do the one-line diagrams show?

12.47 kV medium-voltage service stepping to 480Y/277 V through 2500 kVA transformers, with radial multi-path distribution (loadbreak → fused primary → transformer → secondary breaker → ATS → 2 MW UPS → PDU) to 42-rack GPU zones at 136 kW per rack, plus generator feeder interfaces and buried-utility crossing details.

How is structural design handled for ~1.4-tonne GPU racks?

The structural set covers the prefabricated steel building system: design basis and parameters, member and connection drawings, and technical specifications — the load path that carries dense liquid-cooled rack rows and overhead services.

What does the network reference design cover?

GPU hall network topology, cabling architecture and interface definitions for a liquid-cooled hall, at reference-design depth.

What does AIDC mean, and is this an AIDC reference design?

AIDC is industry shorthand for AI data center. Yes — this set is an AIDC reference design: an AI data center construction drawing package (electrical, structural, network) built around liquid-cooled GPU rack infrastructure rather than enterprise IT loads.

What does the liquid-cooling reference design cover?

A 38-page functional P&ID and coordination drawing set for a 90-rack, five-group direct-liquid-cooling layout: dry/wet cold-source selection trains with dedicated pumps, CDU groups with A/B secondary loops, six-rack unit details, and the buffer, transfer and failure-response design requirements. It is a functional P&ID set, not a 3D installation model; assumptions and unconfirmed parameters are identified on the drawings.

Do complete, un-gated data center drawing sets exist at all?

Yes. This page is one: 371 pages across electrical (88), structural (170), network (75) and liquid cooling (38), published as direct PDF downloads with SHA-256 checksums — no registration, no NDA, no customer portal. Vendor construction packages are indeed NDA-gated; a reference design published as Design Development — Public Edition is a different class of document, and this set is coordinated across all four disciplines for one GB300-class facility.

Who publishes these and why are they free?

K&K Data Service Inc. publishes its working engineering record — including the 106-article Data Center Lab — because we would rather be examined than take our word for it. The drawings carry attribution terms inside each document.

Questions about any sheet or parameter: inquiry@kkdatasvc.com or the contact page.