IS 14496 : Part 2 : 1998 Guidelines for preparation of landslide - Hazard zonation maps in mountainous terrains: Part 2 Macro-zonation

1 Scope

This standard (Part 2) covers guidelines for preparation ofmacro-zonation landslide hazard zonation (LHZ) map on scale of theorder of 1:25000 or 1:50000.

Note - The map shall be prepared by superimposing the terrainevaluation maps in a particular seismic zone such as lithologicalmap, structural map, slope morphometry map, relative relief map,land use and land cover map and hydrogeological condition map usinglandslide hazard evaluation factor (LHEF) rating scheme andcalculating the total estimated hazard (TEHD). However, thelimitations of the methodology are external factors, which aredifficult to account for being not easily determinable withparticular reference to landslides, such as flood-prone area,cyclone-prone area and snow avalanches, permafrost, etc.

2 References

IS7422Symbols and abbreviations for use in geological maps,sections and subsurface exploratory logs :

Part 1 :1974 Part 1 Abbreviations

Part 2 :1974 Part 2 Igneous rocks

Part 3 :1974 Part 3 Sedimentary rocks

Part 4 :1985 Part 4 Metamorphic rocks

Part 5 :1992 Part 5 Line symbols for formation contactsandstructural features