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 RRGC Rockan as a radar-group command centre in a rock cavern. The source identifies it as O1 S and reports decommissioning in 2000.
No standardized area published
Start date not established
Completion date not established
No unit-attributed image · 30 in the 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 →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.
Per-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Archetype cavern-envelope factor is 6.7 design m³ per usable m². · Prior model input reviewed by auditInternal 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.
Per-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Archetype cavern-envelope factor is 6.7 design m³ per usable m². Mass uses an assumed Swedish hard-rock density of 2.… · Reviewed mass-handling modelLength alone is insufficient; a costable tunnel also needs width, height or cross-sectional area.
No usable quantity in the reviewed source · Evidence gapPublished 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.
No support-area quantity is published · Audited excavation scopeCounts and dimensions of access, transfer, utility and emergency interfaces.
Generic RRGC has a blast tunnel and emergency rise shaft; some sites had through tunnels. · Reviewed base modelCast inner structures and linings, kept separate from excavated rock and reinforcement mass.
Per-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Archetype concrete factor is 1.7 m³ per usable m². · Reviewed base modelGroundwater, 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 describes the standard fixed RRGC/F as a freestanding four-storey building inside a blasted cavern, reached by a long blast tunnel and a hydraulically operated double blast gate. It records eight fixed facilities built during the 1962–1965 program…
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 667.7m · rounded for Confidence E.
Transitional limitation. SEK 113,551,380 is still a blanket concept contingency, not probability-weighted expected risk. This is why the amount is labelled provisional. The audited command rock WBS remains the central scope ledger.
A named physical RRGC/F, but geometry and systems quantities are inherited only from the generic fixed-RRGC class.
38/100 article-geometry completeness. Detailed source extraction is available in the original-article audit.
Confidence E · geometry completeness 38/100
Do not add this blindly to related records. One of the eight sites included in se-fv-radargruppcentraler; never sum individual and programme records.
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.
Hydrogeology, drainage, pumping and moisture control · SEK 12,864,000
Hydrogeology, drainage, pumping and moisture control · SEK 12,864,000
Integrated testing, commissioning and public-safe documentation · SEK 10,400,000
| Change | Scope | Audited base | Quantity / rate basis | Provenance |
|---|---|---|---|---|
| Retained | 01Supported rock excavationCivil Rock | SEK 160,800,000 | 21,440 Solid Design m³ × SEK 7,500 / Solid Design m³Class Proxy quantity · Assumption ratePer-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Archetype cavern-envelope factor is 6.7 design m³ per usable m². | Existing archive WBS |
| Retained | 02Rock mass handlingMass Handling | SEK 5,397,520 | 56,816 T × SEK 95 / TClass Proxy quantity · Assumption ratePer-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Archetype cavern-envelope factor is 6.7 design m³ per usable m². Mass uses an assumed Swedish hard-rock density of 2.65 t/m³. | Existing archive WBS |
| Retained | 03Underground cast concreteStructural | SEK 38,080,000 | 5,440 m³ × SEK 7,000 / m³Class Proxy quantity · Assumption ratePer-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Archetype concrete factor is 1.7 m³ per usable m². | Existing archive WBS |
| Retained | 04Installed reinforcementStructural | SEK 6,664,000 | 190,400 Kg × SEK 35 / KgClass Proxy quantity · Assumption ratePer-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Archetype concrete factor is 1.7 m³ per usable m². Archetype reinforcement intensity is 35 kg per concrete m³. | Existing archive WBS |
| Retained | 05Interior construction and conventional MEPBuilding Services | SEK 144,000,000 | 3,200 m² / 34,445 ft² × SEK 45,000 / Usable m²Class Proxy quantity · Assumption ratePer-site proxy for a generic four-storey freestanding RRGC/F building inside a rock cavern. Fit-out factor is 1 times the reference scale. | Existing archive WBS |
| Retained | 06Protection, resilience and standby systemsProtection | SEK 64,000,000 | 3.56 Project × SEK 18,000,000 / ProjectAssumption quantity · Assumption rateOne protection package per 900 usable m² / 9,688 ft², subject to a 1-package minimum. | Existing archive WBS |
| Retained | 07Portals, escape and utility interfacesSite And Access | SEK 12,000,000 | 2 Project × SEK 6,000,000 / ProjectClass Proxy quantity · Assumption rateGeneric RRGC has a blast tunnel and emergency rise shaft; some sites had through tunnels. | Existing archive WBS |
| Added | R572Hydrogeology, drainage, pumping and moisture control | SEK 12,864,000 | 8% of supported-rock scope as a class-screening allowance | Class assumption — site investigation/RFQ required |
| Added | R573Integrated testing, commissioning and public-safe documentation | SEK 10,400,000 | 5% of MEP/protection/mission-system scope | Class assumption — commissioning plan required |
Active base WBS SEK 454,205,520 · 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.
Gryaab February-2024 long-tunnel benchmark: SEK 5,513/design m³ for excavation plus support. Low case is lightly currentized; base/high add small, constrained, non-repetitive bunker uncertainty.
Gryaab February-2024 long-tunnel benchmark: SEK 5,513/design m³ for excavation plus support. Low case is lightly currentized; base/high add small, constrained, non-repetitive bunker uncertainty.
Receiving price examples range from a credit for clean blasted rock to a fee for mixed crushed rock. Actual net rate depends on haul distance, classification and beneficial reuse.
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.
Reported decommissioning year.
B023Selected over RRGC Myran for the contemplated StriC upgrade.
B1532 reviewed claims. Evidence locators resolve against the stored article hash or archived snapshot.
| Subject | Claim | Value | Date | Evidence | Certainty |
|---|---|---|---|---|---|
| facility lifecycle | Event | Selected over RRGC Myran for the contemplated StriC upgrade. | — | B153 | Reported |
| facility lifecycle | Event | Reported decommissioning year. | 2000 | B023 | Reported |
No named project parties were extracted.