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EMR-01 · Aba Al-Saud
Emara Palace — main block
Palace · 2 storeys · 112 m² S elevation built 1961documented criticality 5/5
Latest capture
22 Aug 2026 · 74 d ago
Measured on this visit
4.3 mm
max crack width
9%
surface loss
23%
salt loading
Elevated
marker MK-EMR-01 · confidence 88% · A. Al-Hadi
Risk
0–100
57Elevated
stableintervene
Time to 5 mm6 months
Growth rate0.12 mm / month
Intervention estimateSAR 42,500
Findings
7 captures
Structural crack
dominant mechanism on the last visit
Rising damp line at 29% RH
salt crystallisation risk band
S face exposed to prevailing wind
drives the wet–dry cycle above 44 °C
Crack width over time
mm · measured, then forecast
Dots are accepted captures. The dashed tail is a linear projection of the measured rate — it is what moves this structure up the intervention queue, not the current width alone.
Defects on the latest visit
22 Aug 2026
| Defect | Width | Length | Face | Mechanism | Drives risk |
|---|---|---|---|---|---|
| Defect 1 | 4.3 mm | 2,049 mm | E | Structural crack | worst |
| Defect 2 | 2.4 mm | 1,325 mm | SW | Structural crack | — |
| Defect 3 | 2.3 mm | 535 mm | S | Structural crack | — |
| Defect 4 | 2.0 mm | 942 mm | N | Water ingress | — |
The wall carries 4 separate defects at this visit. The widest one sets the risk band; the others are counted and carried in the record.
Capture ledger
7 accepted
| Date | Crack | Loss | Salt | RH | Mechanism | Captured by | Marker | Confidence |
|---|---|---|---|---|---|---|---|---|
| 22 Aug 2026 | 4.3 mm · +3 | 9% | 23% | 29% | Structural crack | A. Al-Hadi | MK-EMR-01 | 88% |
| 02 Apr 2026 | 3.7 mm · +3 | 6% | 15% | 68% | Structural crack | A. Al-Hadi | MK-EMR-01 | 92% |
| 10 Nov 2025 | 3.1 mm · +3 | 7% | 16% | 33% | Water ingress | Field survey | MK-EMR-01 | 88% |
| 21 Jun 2025 | 2.6 mm · +3 | 7% | 15% | 54% | Surface loss | Field survey | MK-EMR-01 | 97% |
| 29 Jan 2025 | 2.0 mm · +3 | 4% | 12% | 66% | Surface loss | Field survey | MK-EMR-01 | 91% |
| 09 Sept 2024 | 1.4 mm · +3 | 3% | 11% | 62% | Structural crack | A. Al-Hadi | MK-EMR-01 | 89% |
| 20 Apr 2024 | 0.8 mm · +3 | 2% | 4% | 71% | Water ingress | Field survey | MK-EMR-01 | 95% |
Field note
Built 1961 by Emir Turki bin Madi as the seat of the emirate; about 60 rooms and a mosque, with four circular corner towers. Guardian: A. Al-Hadi.
Site reference: Najran Municipality — أبرز معالم نجران.