Portfolio
HAD-03 · Al-Hadn
Al-Hadn village — terrace houses
House · 2 storeys · 246 m² SW elevation built c. 1820estimated criticality 3/5
Latest capture
17 Sept 2026 · 48 d ago
Measured on this visit
3.5 mm
max crack width
8%
surface loss
18%
salt loading
Watch
marker MK-HAD-03 · confidence 89% · F. Al-Zamanan
Risk
0–100
46Watch
stableintervene
Time to 5 mm23 months
Growth rate0.07 mm / month
Intervention estimateSAR 48,500
Findings
5 captures
Surface loss
dominant mechanism on the last visit
Rising damp line at 62% RH
salt crystallisation risk band
SW 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
17 Sept 2026
| Defect | Width | Length | Face | Mechanism | Drives risk |
|---|---|---|---|---|---|
| Defect 1 | 3.5 mm | 1,722 mm | SE | Surface loss | worst |
| Defect 2 | 1.0 mm | 751 mm | S | 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 |
|---|---|---|---|---|---|---|---|---|
| 17 Sept 2026 | 3.5 mm · +1 | 8% | 18% | 62% | Surface loss | F. Al-Zamanan | MK-HAD-03 | 89% |
| 05 Feb 2026 | 2.9 mm · +1 | 5% | 15% | 35% | Water ingress | F. Al-Zamanan | MK-HAD-03 | 88% |
| 26 Jun 2025 | 2.5 mm · +1 | 4% | 14% | 30% | Water ingress | F. Al-Zamanan | MK-HAD-03 | 91% |
| 14 Nov 2024 | 2.0 mm · +1 | 5% | 12% | 46% | Salt crystallisation | F. Al-Zamanan | MK-HAD-03 | 94% |
| 04 Apr 2024 | 1.5 mm · +1 | 4% | 7% | 35% | Salt crystallisation | Field survey | MK-HAD-03 | 94% |
Field note
Stepped mud houses on the slope below the castle. Guardian: F. Al-Zamanan.
Site reference: Najran Municipality — أبرز معالم نجران.