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MID-01 · Badr Al-Janoub
Al-Midmar Tower
Tower · 3 storeys · 55 m² NE elevation built c. 1790estimated criticality 3/5
Latest capture
18 Aug 2026 · 78 d ago
Measured on this visit
1.6 mm
max crack width
5%
surface loss
11%
salt loading
Stable
marker MK-MID-01 · confidence 97% · A. Al-Hadi
Risk
0–100
24Stable
stableintervene
Time to 22% loss—
Growth rate0.03 mm / month
Intervention estimateSAR 21,000
Findings
5 captures
Salt crystallisation
dominant mechanism on the last visit
Rising damp line at 48% 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
18 Aug 2026
| Defect | Width | Length | Face | Mechanism | Drives risk |
|---|---|---|---|---|---|
| Defect 1 | 1.6 mm | 611 mm | NE | Salt crystallisation | worst |
| Defect 2 | 0.8 mm | 754 mm | W | Water ingress | — |
The wall carries 2 separate defects 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Aug 2026 | 1.6 mm · +1 | 5% | 11% | 48% | Salt crystallisation | A. Al-Hadi | MK-MID-01 | 97% |
| 14 Dec 2025 | 1.3 mm · +1 | 3% | 7% | 35% | Surface loss | A. Al-Hadi | MK-MID-01 | 90% |
| 12 Apr 2025 | 1.1 mm · +1 | 4% | 9% | 31% | Surface loss | A. Al-Hadi | MK-MID-01 | 97% |
| 09 Aug 2024 | 0.9 mm · +1 | 2% | 8% | 59% | Salt crystallisation | Field survey | MK-MID-01 | 90% |
| 06 Dec 2023 | 0.7 mm · +1 | 4% | 4% | 74% | Surface loss | A. Al-Hadi | MK-MID-01 | 98% |
Field note
Old mud tower in Badr Al-Janoub governorate, recently restored; surrounded by older mud houses. Guardian: A. Al-Hadi.
Site reference: Najran Municipality — أبرز معالم نجران.