In Penang, the submission of the geotechnical report is required for Classes 2, 3 and 4 hillsides (above 15 degrees). All geotechnical reports must be submitted to the Committee for Development on Land with Risk, Penang (Jawatankuasa Tanah Berisiko Negeri Pulau Pinang) for approval.
NOTE: “In-situ” means existing slope, in its current condition.
| Classification based on hill site class score (% of slope gradient class on a site), hazard ranking and slope/wall height | Technical Requirements | ||||
|---|---|---|---|---|---|
| Slope Class 1 - Slope < 15° | Hill Site Class 1 ≤1 | Hazard M | Ht 3-10m 2 | Ht>10m 2 | Site Class 1 – Slope Stability Analysis by civil engineers. Geotechnical Report not required. Site Class 2 – Geotechnical report by geotechnical engineers and to be checked and consented by Independent Checker. To submit to CDLR for approval. Site Classes 3 & 4 - Geotechnical report by a geotechnical engineer and Geotechnical Review by an independent checker. To submit to CDLR for approval. |
| Slope Class 2 - Slope of >15° to < 25° | Hill Site Class 2 >1 - 2 | Hazard H | Ht 3-10m 2 | Ht>10m 3 |
|
| Slope Class 3 - Slope of > 25° to < 35° | Hill Site Class 3 >2 - 4 | Hazard VH | Ht 3-10m 3 | Ht>10m 4 |
|
| Slope Class 4 - Slope > 35° | Hill Site Class 4 >4 | Hazard EH | Ht 3-10m 4 | Ht>10m 4 |
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| Additional requirement: Qualifications clearly itemized for Civil Engineer, Geotechnical Engineer and Independent Checker | |||||
| Developments for sensitive areas require approval from the National Physical Planning Council (NPPC) under Section 22(2A)(c) of the Town and Country Planning Act 2001 (TCPA) | |||||
