Prison Capacity Overcrowding Percent Design Calculator
Matched actual design-capacity occupancy; pooled excess can mask local deficits. No lawful or humane capacity threshold or permission for overcrowding.
Description
Design occupancy compares population with a facility's stated design capacity.
Design occupancy compares population with a facility's stated design capacity.1
Pooled occupancy differs from an average of facility percentages and may exceed 100 percent. Use this tool to calculate the stated observation or conditional model from supplied measurements.
When to use Prison Capacity Overcrowding Percent Design Calculator
Use this tool to calculate the stated observation or conditional model from supplied measurements. Establish the jurisdiction or research scope, observation and event definitions, reference date, matched period and denominator basis.
How to use Prison Capacity Overcrowding Percent Design Calculator and understand its results
- Establish the jurisdiction or research scope, observation and event definitions, reference date, matched period and denominator basis.
- Enter observedPopulationByFacility, verifiedDesignCapacityByFacility, using the field meanings and rules below, then run the tool.
- Read result.observedDesignOccupancyPercent, result.signedPooledExcessPopulation. Interpret each field using the units, signs and evidence rules below.
- If input validation fails, correct the reported field and run again. Before applying a successful result, check the stated reference scope, units, assumptions and any retained unknown evidence.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedPopulationByFacility | Observed population by facility | list of number | Required |
| verifiedDesignCapacityByFacility | Verified design capacity by facility | list of number | Required |
Supply nonempty aligned nonnegative population and capacity lists, with positive pooled design capacity. Divide pooled population by pooled capacity and scale by 100; return population−capacity as signed excess. Individual capacities may be zero; fractional values and occupancy above 100 are accepted. No facility definition or operational-capacity substitution is supplied.
pooledDesignOccupancyPercent=100×Σpopulation/ΣdesignCapacity; signedExcess=Σpopulation−ΣdesignCapacity Apply the field units and exact ordering, boundary and evidence rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result containing the calculation or selected reference fields below | object |
| result.observedDesignOccupancyPercent | Observed Design Occupancy Percent; use the units, sign convention and calculation stated above | number |
| result.signedPooledExcessPopulation | Signed Pooled Excess Population; use the units, sign convention and calculation stated above | number |
{
"input": {
"observedPopulationByFacility": [
120,
90
],
"verifiedDesignCapacityByFacility": [
100,
100
]
},
"output": {
"result": {
"observedDesignOccupancyPercent": 105,
"signedPooledExcessPopulation": 10
}
}
}Limitations and assumptions
Pooled occupancy differs from an average of facility percentages and may exceed 100 percent. Results depend on the independently established measurement basis and the exact model assumptions above.
Every listed input requires an explicit value. Unexpected fields, incorrect value types, nonfinite numbers and sparse numeric arrays fail validation; tool-specific bounds and alignment rules apply as described above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful calculation that reports a false comparison or retains unknown evidence.
Alternative or Complementary methods
Use Staff Inmate Ratio Security Level Lookup to examine a related aspect: Staff-to-inmate benchmarks depend on facility type, security context and staff duties.
Use Bed Count Rated vs Operational Capacity Lookup where its separate inputs and scope apply: Rated and operational bed capacities are different facility measures.
References
Similar or alternative tools
- Staff Inmate Ratio Security Level Lookup
Staff-to-inmate benchmarks depend on facility type, security context and staff duties.
- Bed Count Rated vs Operational Capacity Lookup
Rated and operational bed capacities are different facility measures.