Portfolio
QAB-01 · Al-Qabil
Al-Lijam — village houses, north row
House · 2 storeys · 259 m² E elevation built c. 1790estimated criticality 3/5
Latest capture
10 Jul 2026 · 117 d ago
Measured on this visit
4.3 mm
max crack width
9%
surface loss
18%
salt loading
Elevated
marker MK-QAB-01 · confidence 92% · S. Al-Makrami
Risk
0–100
49Elevated
stableintervene
Time to 5 mm7 months
Growth rate0.11 mm / month
Intervention estimateSAR 57,000
Findings
5 captures
Structural crack
dominant mechanism on the last visit
Rising damp line at 48% 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
10 Jul 2026
| Defect | Width | Length | Face | Mechanism | Drives risk |
|---|---|---|---|---|---|
| Defect 1 | 4.3 mm | 2,641 mm | NE | Structural crack | worst |
| Defect 2 | 1.6 mm | 638 mm | NW | Salt crystallisation | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 10 Jul 2026 | 4.3 mm · +1 | 9% | 18% | 48% | Structural crack | S. Al-Makrami | MK-QAB-01 | 92% |
| 25 Oct 2025 | 3.3 mm · +1 | 8% | 14% | 55% | Salt crystallisation | S. Al-Makrami | MK-QAB-01 | 97% |
| 10 Feb 2025 | 2.4 mm · +1 | 6% | 12% | 56% | Structural crack | S. Al-Makrami | MK-QAB-01 | 96% |
| 28 May 2024 | 1.5 mm · +1 | 3% | 7% | 59% | Surface loss | Field survey | MK-QAB-01 | 96% |
| 14 Sept 2023 | 0.7 mm · +1 | 2% | 8% | 33% | Water ingress | S. Al-Makrami | MK-QAB-01 | 91% |
Field note
Al-Lijam is named in the municipality record as the most notable of the Al-Qabil villages, with many distinctive mud houses. Guardian: S. Al-Makrami.
Site reference: Najran Municipality — أبرز معالم نجران.