CA16 Pressure Test

CA16-1962 pressure calculation for sprinkler systems at height

📋 Report Details

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Test Inputs

Pressure measured while system is flowing full 2" / 50mm waste
kPa
Static pressure with no flow
Vertical distance from test point to highest sprinkler head
~3 levels
Based on 3.5m per level
Equivalent Height Pressure Loss
— kPa
Height × 9.81 kPa/m
Pressure at Highest Head
— kPa
Running − Height Loss

Compliance Checks

Sufficient Pressure (OH > 5 PSI)
Minimum pressure at highest head
—
5/8's Rule
Running ≥ 5/8 × Standing
—
CA16-1962 — This calculation determines if adequate pressure exists at the highest sprinkler head after accounting for elevation losses. The 5/8's rule ensures sufficient flow capacity remains in the supply.

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Quick Reference

Minimum Pressure at Head

Ordinary Hazard: > 5 PSI (34.5 kPa)
Light Hazard: > 15 PSI (103.4 kPa)

Hydrostatic Head

9.81 kPa per metre
0.433 PSI per foot

5/8's Rule

Running pressure must be at least
62.5% of standing pressure

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