These guidelines pertain to slopes within the city of Kuala Lumpur.
NOTE: “In-situ” means existing slope, in its current condition.
| Slope Classification | Permitted Development | Technical Requirements |
|---|---|---|
| Class 1 - In-situ or cut slope < 15° - Areas with geotechnical restrictions and coordination of technical requirements such as geomorphology, drainage and irrigation, etc. | Can be considered for all types of development subject to Development Plans Exception: Bukit Batu Tabor, which is above 300 meter AMSL | a. Geotechnical Investigation Report and Slope Stability Analysis (soil structure) prepared by a certified Geotechnical Engineer or equivalent; b. Geological and Geomorphological Mapping Report prepared by a Geoscientist registered with the Board of Geologists; c. Drainage and Irrigation Report according to the Environmentally Friendly Drainage Manual (MASMA) prepared by a Hydrological Engineer registered with the Department of Irrigation and Drainage (Hydrology); d. EIA/EMP Report including Rainfall Drainage Mapping Report prepared by a consultant registered with the Department of Environment; or e. Earthworks Plan prepared by an engineer registered with the Malaysian Board of Engineers. |
| Class 2 - In-situ slopes ≥15° and ≤ 25° with no signs of erosion and slope instability - In-situ slope < 15° if signs of instability are present - In-situ terrain with a slope of <15° consisting of colluvium or sensitive geological materials; - Flood hazard areas - Areas with geotechnical restrictions and coordination of technical requirements such as geomorphology, drainage and irrigation, etc. |
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| Class 3 - In-situ terrain with a slope of ≥ 15° to < 25° with no signs of erosion and slope instability - In-situ terrain with a slope of ≥15° to < 25° consisting of colluvium or sensitive geological materials - In-situ terrain with a slope of < 15° consisting of colluvium or sensitive geological materials with signs of slope instability; - Areas consisting of limestone, swamps, peatlands and former mines; - Areas at risk of mudflows | Permitted: • Residential Housing - subject to Development Plan • Businesses • Offices • Tourism • Training Institutions (with conditions based on elevation) Exception: Bukit Batu Tabor, which is above 300 meter AMSL For types of development not listed above, they are subject to the Development Plan |
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| Class 4 - In-situ terrain with a slope of ≥ 35° with no signs of erosion and slope instability - In-situ terrain with a slope of ≥ 25° to < 35° with signs of erosion and slope instability; - In-situ terrain with a slope of ≥15° to < 25° consisting of colluvium or sensitive geological material with signs of slope instability; - Areas of debris flow threat; - Hilltops or ridges | Elevation 150 m – 300 m: Development can be considered and requires an engineering solution Exception: Bukit Batu Tabor, which is above 300 meter AMSL | Same as above with addition of: a. Detailed EIA Report in areas >1000m and Class IV for related infrastructure development prepared by a consultant with the approval of the Department of Environment. b. All Technical Reports must be reviewed by the relevant Technical Department. |
| Additional requirement: 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) | ||
