# Performance Specification Gap in Division 21 Fire Suppression submittals

> Source: https://deviationcheck.com/divisions/21-fire-suppression/performance-specification-gap/

A measurable performance property in the submittal (rating, capacity, tolerance, efficiency) does not meet what the spec requires.

## What to look for in Division 21 Fire Suppression

Key performance parameters in fire suppression submittals:
- **Sprinkler K-factor** (K5.6, K8.0, K11.2, K14.0, K16.8, K25.2 - must match hydraulic calculations)
- **Sprinkler temperature rating** (135F/57C ordinary, 175F/79C intermediate, 200F/93C, 286F/141C - must match hazard/location)
- **Sprinkler response type** (standard response SR vs quick response QR vs ESFR)
- **Coverage area per head** (maximum spacing per NFPA 13 for hazard classification)
- **System design density** (gpm/sf for density/area method per NFPA 13)
- **Fire pump rated capacity** (GPM at rated pressure in psi)
- **Fire pump pressure** (psi at rated flow, churn/shutoff, and 150% of rated flow)
- **Fire pump driver horsepower** (HP)
- **Standpipe flow rate** (GPM per NFPA 14 - Class I: 500 GPM first riser, 250 GPM each additional)
- **Standpipe residual pressure** (100 psi at topmost outlet per NFPA 14)
- **Pipe schedule vs hydraulically calculated** system design basis
- **Clean agent design concentration** (% by volume per NFPA 2001)
- **Clean agent discharge time** (10 seconds per NFPA 2001)
- **Seismic bracing loads** (per NFPA 13 Chapter 18 / ASCE 7)

## Severity

Default grade: Blocker. Always a Blocker when the gap touches life-safety or structural performance.