Every Indian civil engineer, builder, and HVAC consultant needs the same handful of zone lookups on every project: seismic zone (sets base shear), basic wind speed (sets cladding + lateral force), climate zone (sets ECBC envelope spec), soil type (sets foundation), rainfall (sizes stormwater + roof drains), AQI (sizes HVAC filters). Today this means flipping through scanned IS code annexes — slow, error-prone, impossible on mobile. A single search box should return all of them in seconds.
InfraLens hosts 16 interactive engineering reference maps covering structural, site, envelope, services, and resilience parameters. Every map lets you search any Indian city or click any spot on an OpenStreetMap base layer. The result panel returns the zone classification, design value, IS code reference, and actionable design implications — and you can download a PDF reportfor any single map or a combined report covering all 16 parameters for one city.
Seismic Zones (IS 1893), Basic Wind Speed (IS 875 Part 3), Cyclone-Prone Regions (IS 875 Annex A), Snow Load (IS 875 Part 4), and IRC Bridge Seismic (IRC SP 114). Drives lateral-force calculations in IS 1893 base shear and IS 875 wind pressure equations, plus IRC's bridge-specific factors.
Soil Bearing Capacity (IS 1904), Groundwater Depth (CGWB), Soil Sulphate Zones (IS 456 Cl. 8.2.2.4), and Coastal Exposure (IS 456 Cl. 8.2). Decides foundation type, dewatering needs, concrete durability spec, and cement choice (OPC / PPC / SRC).
Climate Zones (NBC 2016 Part 11), Rainfall Intensity (IMD/CPHEEO), Air Quality (CPCB AQI), and Frost Zones. Sets ECBC envelope U-value / SHGC, stormwater + roof drainage rate, HVAC filter selection (MERV 8 → HEPA), and cold-weather concreting per IS 7861.
Solar Irradiance (MNRE Solar Atlas) and Lightning Risk (IS 2309). Drives PV system sizing + payback estimate, and the IS 2309 LPS protection level.
Termite Risk (IS 6313) — anti-termite treatment cost (₹3-12/sqft) and protection method by zone.
Every map cites its source standard. The maps are not a substitute for the published standard — they are a fast lookup layer. For final design decisions, consult the standard directly:
Once you know your zone, calculate the actual design quantity:
The maps follow the published IS / IRC / NBC source standards directly, with city-specific overrides where the regional zone differs from state default (e.g. Kutch in Zone V despite Gujarat's default Zone III for seismic). For boundary regions and micro-climates, treat the map as a starting estimate; site-specific testing or local microzonation studies are still required for final design decisions.
OpenStreetMap is free under the Open Database License with attribution. Google Maps' embed API would cost ₹1.2-1.5 lakh/month at our traffic level, which would force us to paywall the maps. OSM gives us pan / zoom / scroll-wheel for free without compromising on UX.
Yes — use the Combined report bar above the table. Pick a city → click Download Combined Report → get a 6-8 page PDF with the city's zone classification under every parameter, plus a one-page cheat-sheet summary. Useful for project handover, tender preparation, or initial feasibility studies.
For arbitrary map clicks (not on a curated city marker), the system finds the nearest city in our 200-city gazetteer using Haversine distance and adopts that city's zone. The result panel shows the resolver city + distance (e.g. “Estimated zone via nearest city: Jabalpur, 45 km away”). For locations more than ~50 km from the nearest gazetteer city, treat the result as a regional estimate only.
Yes — every map has explicit state defaults for all 36 states and union territories, plus 200+ city-level overrides. We add cities as user demand surfaces gaps; the click-anywhere fallback always returns a regional estimate.
All maps are reference-only. Final design decisions must rely on the published IS / IRC / NBC standard and a qualified engineer's review. For micro-zoned cities and safety-critical structures (hospitals, schools, lifelines, bridges), supplement with site-specific surveys.