No standardized area published
Assembling intelligence…
Reading listings, research log, and source-health evidence.
BunkerStrategyIntelligence terminalBunkerStrategyIntelligence terminalReading listings, research log, and source-health evidence.
The archive documents Fält 87 Kosta as a buried-concrete Bas 60 airbase. Completion is recorded in 1964. Its documented role was dispersed wartime air operations for F 17.
No standardized area published
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 →24 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.
No usable quantity in the reviewed source · Evidence gapRock in place removed before bulking; the quantity used to price excavation.
The audited morphology is not a rock-excavation class. · Audited morphologyInternal 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.
No usable quantity in the reviewed source · Evidence gapCast inner structures and linings, kept separate from excavated rock and reinforcement mass.
No usable quantity in the reviewed source · Evidence gapGroundwater, inflow, drainage, pumping and moisture-control evidence affecting construction and operation.
No usable quantity in the reviewed source · Evidence gapThe 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. The article first describes generic Bas 60 standards, then gives Kosta-specific facts. Kosta opened in 1964 with a 2,000 m by 25 m main runway (50,000 m² / 538,196 ft² by direct multiplication), one sealed KC north of the field, UOM southwest and Bakom west.…
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 979.2m · rounded for Confidence E.
Transitional limitation. SEK 166,537,500 is still a blanket concept contingency, not probability-weighted expected risk. This is why the amount is labelled provisional. The audited airbase system WBS remains the central scope ledger.
Inclusive whole-site estimate; some fuel/personnel facts in the article are generic Bas 60 standards.
55/100 article-geometry completeness. Detailed source extraction is available in the original-article audit.
Confidence E · geometry completeness 55/100
Do not add this blindly to related records. Inclusive parent of se-falt-87-kosta-KC; never sum parent and child.
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.
No explicit active base-WBS line.
No explicit active base-WBS line.
Integrated testing, commissioning and public-safe documentation · SEK 9,750,000
| Change | Scope | Audited base | Quantity / rate basis | Provenance |
|---|---|---|---|---|
| Retained | 05Support buildings and workshopsBuilding | SEK 198,000,000 | 6,000 m² / 64,583 ft² × SEK 33,000 / Usable m²Class Proxy quantity · Assumption rateProtected/support area proxy informed by six Töreboda shelters, two UOM shelters and distributed Bas 60 components. | Existing archive WBS |
| Retained | 08Runway and dispersal pavementAirfield Civil | SEK 200,000,000 | 50,000 m² / 538,196 ft² × SEK 4,000 / Paved m²Derived From Published quantity · Assumption ratePublished 2000 m × 25 m main runway. | Existing archive WBS |
| Retained | 09Airbase command and mission systemsMission Systems | SEK 45,000,000 | 3 Reference Package × SEK 15,000,000 / Reference PackageAssumption quantity · Assumption rateOne mission package per 2000 usable m² / 21,528 ft², subject to a 1-package minimum. | Existing archive WBS |
| Retained | 10Dispersed fuel and protected supportProcess And Support | SEK 150,000,000 | 1 Airbase × SEK 150,000,000 / AirbaseAssumption quantity · Assumption rateThe estimate subject covers 1 site. | Existing archive WBS |
| Retained | 11Documented small protective positionsSmall Fortification | SEK 38,400,000 | 8 Bunker × SEK 4,800,000 / BunkerDerived From Published quantity · Derived rateSix Töreboda plus two UOM aircraft shelters. | Existing archive WBS |
| Retained | 12External utilities and site integrationSite And Access | SEK 25,000,000 | 1 Site × SEK 25,000,000 / SiteAssumption quantity · Assumption rateThe estimate subject covers 1 site. | Existing archive WBS |
| Added | R406Integrated testing, commissioning and public-safe documentation | SEK 9,750,000 | 5% of MEP/protection/mission-system scope | Class assumption — commissioning plan required |
Active base WBS SEK 666,150,000 · 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 material establishes specialized systems but no prices. Package values are assumptions and must not be read as classified equivalence.
Provider-listed starting prices include VAT. They are divided by 1.25 for an ex-VAT sanity check and used only for compact bunker units.
Dispersed wartime air operations for F 17.
Airbase reported complete.
B019Entered completed Bas 60 configuration.
B019Additional runway works were planned but stopped because of high cost.
B01911 reviewed claims. Evidence locators resolve against the stored article hash or archived snapshot.
| Subject | Claim | Value | Date | Evidence | Certainty |
|---|---|---|---|---|---|
| milestone | Event | Airbase reported complete. | 1964 | B019 | Reported |
| milestone | Event | Additional runway works were planned but stopped because of high cost. | 1998 | B019 | Reported |
| lifecycle summary | Event | Entered completed Bas 60 configuration. | 1964 | B019 | Reported |
| quantitative observation | Main Runway | {"length":2000,"width":25} | — | B019 | Reported |
| quantitative observation | Personnel Shelter Capacity | {"values":[10,5]} | — | B015 | Reported |
| quantitative observation | Toreboda Aircraft Shelters | 6 shelters | — | B020 | Reported |
| quantitative observation | Uom Shelters | 2 shelters | — | B020 | Reported |
| technical system | Fuel | Underground 100 or 200 m³ tanks and 2,400-litre roll tanks are described for the airbase type. | — | B013 | Reported |
| technical system | Ammunition | Reinforced-concrete ammunition casemates. | — | B014 | Reported |
| technical system | Aircraft Protection | Six Töreboda shelters and two UOM shelters reported at Kosta. | — | B020 | Reported |
| protection | Distributed Protection | Fuel, ammunition, personnel and aircraft were split across protected components. | — | B013,B014,B015,B020 | Reported |