Floor Area · reported
Assembling intelligence…
Reading listings, research log, and source-health evidence.
BunkerStrategyIntelligence terminalBunkerStrategyIntelligence terminalReading listings, research log, and source-health evidence.
Rare 800 m² / 8,611 ft² two-level domed concrete HC in Ängelholm, built 1965–1966 with a two-metre shell, later used by F 10 and Hemvärnet and sold in 2016.
Floor Area · reported
Published date and precision preserved
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 →22 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.
Floor Area · reported · Publisher articleRock 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.
Dome Span; Dome Height · Publisher articleRock 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 And Waste · 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.
Estimate · construction estimate
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. Named Ängelholm civil-defence HC built as a rare buried domed concrete facility because suitable rock was unavailable. The source reports an 18 m span, 9 m height, 2 m shell thickness, 800 m² / 8,611 ft² over two floors, two surface entrances linked by a blas…
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 124.4m · rounded for Confidence D.
Transitional limitation. SEK 21,158,000 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.
79/100 article-geometry completeness. Detailed source extraction is available in the original-article audit.
Confidence D · geometry completeness 79/100
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 | R189Excavation, 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 | R190Drainage, sumps and moisture control | SEK 448,000 | 4% of structural scope as a buried-class screen | Class assumption — site investigation/RFQ required |
| Added | R191Integrated testing, commissioning and public-safe documentation | SEK 2,600,000 | 5% of MEP/protection/mission-system scope | Class assumption — commissioning plan required |
| Added | R192Documented access / escape interface correction | SEK 6,000,000 | Source-specific screening allowance; replace with measured tunnel/shaft/portal take-off | Derived from original-article geometry |
Active base WBS SEK 84,632,000 · 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.
Shared main command post for Ängelholm, Perstorp, Åstorp, Klippan and Båstad and associated authorities.
Site and facility were designed.
B005Trial drilling began.
B006Construction began with blasting and extensive concrete work.
B006Facility entered service.
B006Final inspection.
B006Civil-defence role ended and F 10 took over for conference use.
B012Air force left; municipality resumed operation.
B012Fortifikationsverket operated the site for Hemvärnet exercises, meetings and training.
B012,B014 · B012 · B014Vacant; PCB remediation left heating, ventilation and standby power inoperative.
B014Sold through public bidding.
B016,B020 · B016 · B020Publisher-reported features, not a current engineering inspection or certification.
Municipal water and sewer in peacetime; own well in wartime.
B008Standby system sized for about three weeks; later disabled by cut pipes during PCB remediation.
B008 · B014Separate dormitories, sanitation, small kitchen, dining room, 40 rooms including offices, telephone exchange and day room, plus central operations room.
B008 · B009Uncommon reinforced-concrete dome with two surface entrances connected by a blast tunnel and an additional vertical escape shaft.
B005 · B00726 reviewed claims. Evidence locators resolve against the stored article hash or archived snapshot.
| Subject | Claim | Value | Date | Evidence | Certainty |
|---|---|---|---|---|---|
| milestone | Event | Site and facility were designed. | early 1960s | B005 | Reported |
| milestone | Event | Trial drilling began. | 1962 | B006 | Reported |
| milestone | Event | Construction began with blasting and extensive concrete work. | 1965 | B006 | Reported |
| milestone | Event | Final inspection. | 1966-10-03/1966-10-05 | B006 | Reported |
| milestone | Event | Facility entered service. | 1966 | B006 | Reported |
| lifecycle summary | Event | Civil-defence role ended and F 10 took over for conference use. | early 1980s | B012 | Reported |
| lifecycle summary | Event | Air force left; municipality resumed operation. | 1994 | B012 | Reported |
| lifecycle summary | Event | Fortifikationsverket operated the site for Hemvärnet exercises, meetings and training. | 1996–2010 | B012,B014 | Reported |
| lifecycle summary | Event | Vacant; PCB remediation left heating, ventilation and standby power inoperative. | 2010–2016 | B014 | Reported |
| lifecycle summary | Event | Sold through public bidding. | 2016 | B016,B020 | Reported |
| quantitative observation | Dome Span | 18 m | — | B005 | Reported |
| quantitative observation | Dome Height | 9 m | — | B005 | Reported |
| quantitative observation | Dome Thickness | 2 m | — | B005 | Reported |
| quantitative observation | Floor Area | 800 m² / 8,611 ft² | — | B007 | Reported |
| quantitative observation | Floors | 2 floors | — | B007 | Reported |
| quantitative observation | Persons Per Dormitory | 60 persons | — | B008 | Reported |
| quantitative observation | Beds On Inventory | 101 beds | — | B008 | Reported |
| quantitative observation | Dining Capacity | 30 persons | — | B008 | Reported |
| quantitative observation | Rooms | 40 rooms | — | B008 | Reported |
| quantitative observation | Backup Power Endurance | 3 weeks | — | B008 | Reported |
| quantitative observation | 2015 Energy Use | 55,000 kWh | — | B014 | Reported |
| quantitative observation | Sale Parcel Area | 7,395 m² / 79,599 ft² | — | B020 | Reported |
| technical system | Water And Waste | Municipal water and sewer in peacetime; own well in wartime. | — | B008 | Reported |
| technical system | Power | Standby system sized for about three weeks; later disabled by cut pipes during PCB remediation. | — | B008,B014 | Reported |
| technical system | Habitability And Command | Separate dormitories, sanitation, small kitchen, dining room, 40 rooms including offices, telephone exchange and day room, plus central operations room. | — | B008,B009 | Reported |
| protection | Two-Metre Domed Shell | Uncommon reinforced-concrete dome with two surface entrances connected by a blast tunnel and an additional vertical escape shaft. | — | B005,B007 | Reported |
Programme, sale, operating and component figures remain visible but are not silently relabelled as facility construction cost.
| Scope | Stage | Nominal | CPI 2025 | BKI 2025 | Date / evidence |
|---|---|---|---|---|---|
| annual opex {"amountBound":null,"amountQualifier":"approximately","unit":null,"publisherEquivalentSek":null,"publisherEquivalentAsOf":null} | Operation | SEK 105,000 | SEK 140,069 | — | 2015B014 |
| construction estimate {"amountBound":null,"amountQualifier":null,"unit":null,"publisherEquivalentSek":null,"publisherEquivalentAsOf":null} | Estimate | SEK 2,960,000 | SEK 37,118,522 | — | 1965B006 |
| sale price {"amountBound":null,"amountQualifier":null,"unit":null,"publisherEquivalentSek":null,"publisherEquivalentAsOf":null} | Sale | SEK 3,750,000 | SEK 4,953,764 | — | 2016-08-29B016,B020 |