Citizen Preparedness Technical Report

1. Local occurrence - Score 5 when records show repeated events or official hazard classification; score 1 when no local record exists. 2. Exposure - Score 5 when the hazard reaches dense housing, major roads, bridges, schools, hospitals, or industrial areas. 3. Infrastructure consequence - Score 5 when damage could isolate settlements, interrupt water or power, or make buildings unsafe. 4. Warning and response difficulty - Score 5 when warning time is short, access is limited, or evacuation routes are few.

Calculate:

text HPM score = occurrence + exposure + infrastructure consequence + response difficulty

| Hazard | Occurrence | Exposure | Infrastructure | Response | Total | |---|---:|---:|---:|---:|---:| | Flooding | 5 | 5 | 4 | 4 | 18 | | Earthquake | 3 | 5 | 5 | 5 | 18 |

Rank hazards by total score. If two hazards tie, select the hazard with stronger local records and wider infrastructure exposure. Ask yourself: does every score have a cited source or a clearly recorded field observation?

Example: Selecting and Mapping Two Hazards

Assume a district contains a flood-prone plain and lies within a high seismic-risk area.

1. Collect evidence. Record three documented flood locations, the district seismic classification, bridge locations, and housing concentration from official maps. 2. Score hazards. Flooding receives 18 and earthquake receives 18. Select both because each affects different infrastructure systems. 3. Map exposure. Overlay hazard boundaries with roads, bridges, and housing using a geographic information system (GIS). Mark each exposed asset with its name, coordinates, construction type, and access route. 4. Check the result. Identify a bridge inside the flood zone and unreinforced masonry housing inside the seismic zone. The expected outcome is a map that links each hazard to specific assets requiring inspection. 5. Set the report boundary. State that seismic evaluation will follow IS 1893 (Part 1): 2016 where applicable. For low-rise housing exposed to cyclonic conditions, apply IS 15498: 2023; for slope instability, apply IS 17163: 2020.

Quick checklist

• [ ] Two hazards have the highest HPM scores. - [ ] Each score cites a local or official source. - [ ] Roads, bridges, and housing appear on the vulnerability map. - [ ] Hazard boundaries and map date are recorded. - [ ] Applicable Indian Standard is identified.

Common Selection Errors

Choosing hazards from national reputation A nationally common hazard may not rank first locally. Do this: confirm district occurrence and exposed assets. Not this: select hazards without local records.

Treating vulnerability as hazard presence A hazard map alone does not show consequences. Do this: overlay population centres and infrastructure. Not this: label an entire district equally vulnerable.

Ignoring tied scores and data limits Equal scores require a transparent decision. Do this: explain the tie-breaker and mark uncertain data for field verification. Not this: hide assumptions or present estimates as measurements.

The completed HPM table and vulnerability map establish a defensible starting point for structural evaluation and preparedness planning.

End of chapter one. 4 more chapters and about 3,477 words in the full book.