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EMR-09 · Aba Al-Saud
Emara Palace — courtyard well house
Storehouse · 1 storeys · 285 m² E elevation built 1961documented criticality 3/5
Latest capture
23 Aug 2026 · 73 d ago
Measured on this visit
1.9 mm
max crack width
4%
surface loss
8%
salt loading
Stable
marker MK-EMR-09 · confidence 95% · Field survey
Risk
0–100
26Stable
stableintervene
Time to 5 mm118 months
Growth rate0.03 mm / month
Intervention estimateSAR 36,000
Findings
5 captures
Surface loss
dominant mechanism on the last visit
Rising damp line at 36% RH
salt crystallisation risk band
E 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
23 Aug 2026
| Defect | Width | Length | Face | Mechanism | Drives risk |
|---|---|---|---|---|---|
| Defect 1 | 1.9 mm | 1,028 mm | NE | Surface loss | worst |
The wall carries 1 separate defect at this visit. The widest one sets the risk band; the others are counted and carried in the record.
Capture ledger
5 accepted
| Date | Crack | Loss | Salt | RH | Mechanism | Captured by | Marker | Confidence |
|---|---|---|---|---|---|---|---|---|
| 23 Aug 2026 | 1.9 mm | 4% | 8% | 36% | Surface loss | Field survey | MK-EMR-09 | 95% |
| 26 Mar 2026 | 1.7 mm | 3% | 13% | 29% | Salt crystallisation | Y. Al-Amri | MK-EMR-09 | 96% |
| 27 Oct 2025 | 1.5 mm | 5% | 8% | 34% | Structural crack | Y. Al-Amri | MK-EMR-09 | 93% |
| 30 May 2025 | 1.4 mm | 5% | 8% | 65% | Salt crystallisation | Field survey | MK-EMR-09 | 90% |
| 31 Dec 2024 | 1.4 mm | 3% | 10% | 29% | Structural crack | Y. Al-Amri | MK-EMR-09 | 88% |
Field note
Old well lined with stone at the centre of the courtyard — water ingress risk to the surrounding walls. Guardian: Y. Al-Amri.
Site reference: Najran Municipality — أبرز معالم نجران.