This code provides guidelines for the selection of sites and the planning and design of housing in coastal regions to enhance safety against natural hazards like cyclones, storm surges, and floods. It covers aspects from site selection and land use zoning to building configuration, structural design, and material specifications for durability.
Provides guidelines for site selection and housing design in coastal areas, considering environmental factors including cyclones and floods.
Quick Reference Values
Minimum plinth height above High Flood Level (HFL) or ground level0.6 m
Recommended roof slope for cyclonic areas30 to 45 degrees
Minimum setback from High Tide Line (HTL)500 m (as per CRZ norms, which must be followed)
Recommended building shapeSquare or circular plan
Minimum Grade of Concrete in Coastal ExposureM20 (with specific durability requirements)
Key Formulas
Refers to IS 875 (Part 3) for wind load calculations
Refers to IS 1893 for seismic load calculations
Practical Notes
Always prioritize the latest Coastal Regulation Zone (CRZ) notification over this code for setback distances and permissible activities.
Focus on robust connections, especially roof-to-wall and wall-to-foundation, as these are common failure points during cyclones.
Using corrosion-resistant steel (CRS) and increasing concrete cover is crucial for the longevity of structures in a saline environment.