Combined Floor Area · reported
Assembling intelligence…
Reading listings, research log, and source-health evidence.
BunkerStrategyIntelligence terminalBunkerStrategyIntelligence terminalReading listings, research log, and source-health evidence.
800 m² / 8,611 ft² two-level earth-covered concrete bunker completed in 1955 and shared by HC Henrik, LGC Gjusen, naval reserve staff and army defence-area staff.
Combined Floor Area · reported
Start date not established
Published date and precision preserved
Unit-attributed from its source article
Functional recreation of the documented facility in Sweden using current construction methods and 2026 prices, preserving the documented capacity, protection, autonomy and redundancy. Ex VAT; excluding land, financing, remediation, classified mission equipment and data-centre hardware.
Provisional audited central concept screen; expected-risk calibration is pending. It is not yet a risk-adjusted expected cost.
Method, scope and confidence →13 photographs sourced from the original article, with captions where available.
Published, calculated and proxy dimensions are deliberately separated. Missing evidence stays visible instead of becoming zero.
Rock in place removed before bulking; the excavation-pricing quantity.
Internal airspace; not the amount of rock removed.
Blasted material after bulking; the haul and disposal quantity.
These cubic metres are not interchangeable.
Usable, floor or footprint area; the label is preserved because these are not always interchangeable.
Combined Floor Area · reported · Reviewed dossier fieldRock in place removed before bulking; the quantity used to price excavation.
12% of structural scope as a buried-class screen · Audit revisionInternal air or chamber volume. It is not solid excavation without overbreak, access and support geometry.
No usable quantity in the reviewed source · Evidence gapBlasted material after bulking, or its handled mass. No swollen cubic metres are inferred when only tonnes are modelled.
No rock mass-handling scope applies to the audited morphology. · Audited morphologyLength alone is insufficient; a costable tunnel also needs width, height or cross-sectional area.
No tunnel geometry applies to the audited morphology. · Audited morphologyPublished chamber or arch geometry used to test volume and support assumptions.
No usable quantity in the reviewed source · Evidence gapRock surface requiring bolts, mesh or shotcrete, preferably measured in square metres.
Rock-support surface does not apply to this audited morphology. · Audited morphologyCounts and dimensions of access, transfer, utility and emergency interfaces.
Archetype portal/escape count. · Reviewed base modelCast inner structures and linings, kept separate from excavated rock and reinforcement mass.
Reported facility floor/shelter area is used as the screening usable-area basis. Archetype concrete factor is 2 m³ per usable m². · Reviewed base modelGroundwater, inflow, drainage, pumping and moisture-control evidence affecting construction and operation.
Water · Publisher articleThe headline answers the current replacement question. Historic cost, CPI and construction-index comparisons remain separate because they answer different questions.
Different specifications receive different estimates; they are not used as the upper and lower limits of one answer.
Preserves documented capacity, protection, autonomy and redundancy using current construction methods.
Requires a modern structural, fire, protection and supplier performance brief.
Requires IT load, cooling topology, grid capacity, redundancy and autonomy. Server hardware is excluded.
No representative facility construction cost selected
General purchasing-power comparison—not a construction quote
Broad BKI proxy—not a bunker-specific rebuild price
Scope lock. Functional recreation of the documented facility in Sweden using current construction methods and 2026 prices, preserving the documented capacity, protection, autonomy and redundancy. Ex VAT; excluding land, financing, remediation, classified mission equipment and data-centre hardware. Gjusen/Henrik is a co-located two-storey, earth-covered reinforced-concrete bunker completed in 1955 with a combined reported area of 800 m² / 8,611 ft². The upper level held the civil-defence main centre; the lower held the air-defence group centre plus navy…
Audit revision sweden-replacement-audit-2026.08.15. The central WBS below incorporates the 61-article review. The former deterministic low/base/high cases remain available only as sensitivities and revision history.
Direct works + owner / design / investigation + legacy concept contingency
Central quantities × current installed-rate screen.
Not yet probability-weighted. The current legacy concept contingency remains separate.
22% applied to the direct-work screen.
Raw model SEK 115.6m · rounded for Confidence E.
Transitional limitation. SEK 19,658,000 is still a blanket concept contingency, not probability-weighted expected risk. This is why the amount is labelled provisional. The audited command buried WBS remains the central scope ledger.
No subject caveat recorded.
59/100 article-geometry completeness. Detailed source extraction is available in the original-article audit.
Confidence E · geometry completeness 59/100
Largest active lines in the audited central component schedule.
The workbook publishes one revised central schedule. Its prior low and high stress cases are retained only under sensitivities; no line-level probability distributions are implied.
Excavation, temporary works, waterproofing and backfill · SEK 1,344,000
Drainage, sumps and moisture control · SEK 448,000
Integrated testing, commissioning and public-safe documentation · SEK 2,600,000
| Change | Scope | Audited base | Quantity / rate basis | Provenance |
|---|---|---|---|---|
| Retained | 03High-mass reinforced-concrete shellStructural | SEK 11,200,000 | 1,600 m³ × SEK 7,000 / m³Derived From Published quantity · Assumption rateReported facility floor/shelter area is used as the screening usable-area basis. Archetype concrete factor is 2 m³ per usable m². | Existing archive WBS |
| Retained | 04Installed reinforcementStructural | SEK 5,040,000 | 144,000 Kg × SEK 35 / KgDerived From Published quantity · Assumption rateReported facility floor/shelter area is used as the screening usable-area basis. Archetype concrete factor is 2 m³ per usable m². Archetype reinforcement intensity is 90 kg per concrete m³. | Existing archive WBS |
| Retained | 05Interior construction and conventional MEPBuilding Services | SEK 36,000,000 | 800 m² / 8,611 ft² × SEK 45,000 / Usable m²Derived From Published quantity · Assumption rateReported facility floor/shelter area is used as the screening usable-area basis. Fit-out factor is 1 times the reference scale. | Existing archive WBS |
| Retained | 06Protection, resilience and standby systemsProtection | SEK 16,000,000 | 0.89 Project × SEK 18,000,000 / ProjectAssumption quantity · Assumption rateOne protection package per 900 usable m² / 9,688 ft², subject to a 0.5-package minimum. | Existing archive WBS |
| Retained | 07Buried access, escape and utility interfacesSite And Access | SEK 6,000,000 | 1 Project × SEK 6,000,000 / ProjectAssumption quantity · Assumption rateArchetype portal/escape count. | Existing archive WBS |
| Added | R208Excavation, temporary works, waterproofing and backfill | SEK 1,344,000 | 12% of structural scope as a buried-class screen | Class assumption — earthworks take-off required |
| Added | R209Drainage, sumps and moisture control | SEK 448,000 | 4% of structural scope as a buried-class screen | Class assumption — site investigation/RFQ required |
| Added | R210Integrated testing, commissioning and public-safe documentation | SEK 2,600,000 | 5% of MEP/protection/mission-system scope | Class assumption — commissioning plan required |
Active base WBS SEK 78,632,000 · owner/design and contingency are added in the scenario cards above · 12 removed rows across the archive remain visible as change history.
The three inputs most likely to move the current screen.
These deterministic stress cases simultaneously vary quantities, rates, scope allowances and contingency. They are not confidence intervals and no longer serve as the headline answer.
Links support a rate, scope boundary or method. Context-only sources are not represented as quotations.
Public ready-mix material check only; installed underground rates require RFQ.
Public retail material check only; cutting, bending, fixing, waste and underground logistics require RFQ.
Ordinary critical-facility sanity check, not protected-bunker equivalence.
Public sources establish specialized tested products but not project prices.
Co-located civil-defence main command post, air-defence group centre, naval reserve staff site and army defence-area staff site.
Facility completed for use.
B005Decision taken that LGC Gjusen and HC Henrik had outlived their roles.
B008Hemvärnet used the facility for several years; it was later stripped of equipment but not sealed, with removal and vandalism causing extensive damage.
B008Publisher-reported features, not a current engineering inspection or certification.
Large diesel standby generator.
B006Borehole well.
B006Separate dormitories, kitchen/dining, workshop, toilets, day room, communications/telephone rooms and operations room.
B007LGC tactical room, communications room, technical operations room, staff and office rooms receiving reports from observation stations.
B012 · B015General HC class discussion reports design ranges of 100-500 kg aircraft bombs plus nuclear blast and radiation; the page does not assign an exact rating to this facility.
B015 · B01910 reviewed claims. Evidence locators resolve against the stored article hash or archived snapshot.
| Subject | Claim | Value | Date | Evidence | Certainty |
|---|---|---|---|---|---|
| milestone | Event | Facility completed for use. | 1955 | B005 | Reported |
| milestone | Event | Decision taken that LGC Gjusen and HC Henrik had outlived their roles. | 1993 | B008 | Reported |
| lifecycle summary | Event | Hemvärnet used the facility for several years; it was later stripped of equipment but not sealed, with removal and vandalism causing extensive damage. | after 1993 | B008 | Reported |
| quantitative observation | Combined Floor Area | 800 m² / 8,611 ft² | — | B005 | Reported |
| quantitative observation | Floors | 2 floors | — | B005 | Reported |
| technical system | Power | Large diesel standby generator. | — | B006 | Reported |
| technical system | Water | Borehole well. | — | B006 | Reported |
| technical system | Habitability And Command | Separate dormitories, kitchen/dining, workshop, toilets, day room, communications/telephone rooms and operations room. | — | B007 | Reported |
| technical system | Air Surveillance | LGC tactical room, communications room, technical operations room, staff and office rooms receiving reports from observation stations. | — | B012,B015 | Reported |
| protection | Earth-Covered Reinforced Bunker | General HC class discussion reports design ranges of 100-500 kg aircraft bombs plus nuclear blast and radiation; the page does not assign an exact rating to this facility. | — | B015,B019 | Reported |