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EMR-03 · Aba Al-Saud
Emara Palace — north-east tower
Tower · 2 storeys · 96 m² NE elevation built 1961documented criticality 4/5
Latest capture
13 Aug 2026 · 83 d ago
Measured on this visit
2.4 mm
max crack width
6%
surface loss
14%
salt loading
Watch
marker MK-EMR-03 · confidence 86% · H. Al-Sharif
Risk
0–100
36Watch
stableintervene
Time to 5 mm24 months
Growth rate0.11 mm / month
Intervention estimateSAR 30,000
Findings
5 captures
Structural crack
dominant mechanism on the last visit
Rising damp line at 53% RH
salt crystallisation risk band
NE 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
13 Aug 2026
| Defect | Width | Length | Face | Mechanism | Drives risk |
|---|---|---|---|---|---|
| Defect 1 | 2.4 mm | 1,690 mm | N | Structural crack | 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 |
|---|---|---|---|---|---|---|---|---|
| 13 Aug 2026 | 2.4 mm | 6% | 14% | 53% | Structural crack | H. Al-Sharif | MK-EMR-03 | 86% |
| 06 Apr 2026 | 2.0 mm | 5% | 13% | 34% | Surface loss | Field survey | MK-EMR-03 | 88% |
| 27 Nov 2025 | 1.5 mm | 3% | 8% | 73% | Surface loss | H. Al-Sharif | MK-EMR-03 | 88% |
| 20 Jul 2025 | 1.0 mm | 4% | 6% | 37% | Water ingress | H. Al-Sharif | MK-EMR-03 | 88% |
| 13 Mar 2025 | 0.6 mm | 4% | 6% | 67% | Water ingress | H. Al-Sharif | MK-EMR-03 | 98% |
Field note
One of four circular corner towers built for observation and guard duty. Guardian: H. Al-Sharif.
Site reference: Najran Municipality — أبرز معالم نجران.