Scope of Work

Designed a complete fire protection system for a 13-storey mixed-use residential tower with underground parking. The design included:

• Wet-pipe sprinkler systems for apartments, corridors, amenities

• Dry-pipe sprinkler system for parking garage (Ordinary Hazard Group 1, 30% area increase)

• Combined standpipe/sprinkler risers with pressure regulating valves

• Hydraulic calculations for worst-case demand areas using HASS software

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Occupancies classified per NFPA 13:

• Light Hazard: Residential suites, corridors, amenity spaces

• Ordinary Hazard Group 1: Parking garage, mechanical rooms

• Ordinary Hazard Group 2: Garbage rooms, storage/lockers

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Hydraulic Demand Summary

1. Standpipe System (Wet, Class I)

• 2 × 2½″ hose valves (Roof Penthouse & Level 13)

• Flow: 500 gpm (2 × 250 gpm)

• Residual Pressure: 65 psi @ Roof HV, 69.9 psi @ Level 13 HV

• Total Demand: 500 gpm @ ~69.5 psi (source)

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2. Sprinkler System – Roof Penthouse (Ordinary Hazard Group 1)

• Density: 0.15 gpm/ft² over 1,500 ft²

• 9 quick response sprinklers (K=5.6)

• End Head Pressure: 12.1 psi, Flow: 19.5 gpm

• Total Demand: ~205 gpm

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3. Sprinkler System – Residential Suite (Level 13, Light Hazard)

• Density: 0.10 gpm/ft², Residential standard

• 4 sprinklers in remote area (K=5.8)

• End Head Pressure: 30.5 psi, Flow: 32 gpm

• Total Demand: ~132 gpm

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4. Parking Garage – Dry System (Ordinary Hazard Group 1)

• Design Area: 1,950 ft² (30% increase)

• EC Upright Sprinklers, K=14

• End Head Pressure: 18.5–19.0 psi, Flow ~60 gpm/head

• Total Demand: ~362 gpm

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Fire Pump Selection

• Main Fire Pump: 750 gpm @ 250 psi (17.2 bar)

• Jockey Pump: 30 gpm @ 260 psi (18 bar)

• PRVs: Installed at lower levels to maintain NFPA 14 pressure limits

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Compliance & Outcome

• Fully compliant with NFPA 13, NFPA 14, OBC, and Toronto Fire Services.

• Hydraulic calcs confirm adequate pressure and flow across all scenarios.

• Delivered:

  • Complete design drawings

  • Node-to-node hydraulic calculation sheets

  • Supply vs. demand curves for AHJ review

The system ensures robust, code-compliant fire protection for all residential, amenity, and parking areas of the 13-storey development.