Retrofitting My Home with Fire Sprinklers Greg Kleinberg, Deputy Chief – Fire Marshal Medford Fire-Rescue

Why I Did This Why I Did ThisExperienceKnowledge

The House The House 1995, 1,740 sq. ft. Single Story Wood Framed with Attic and Underfloor Access

The Fire Sprinkler Design Parameters The Fire Sprinkler Design Parameters Water Source Known 60 psi at hose bibs Known 60 psi at hose bibs Known 5/8” water meter (not sufficient) Known 5/8” water meter (not sufficient) Type of System NFPA 13D flow-through (also known as passive purge) looped NFPA 13D flow-through (also known as passive purge) looped and ending at a washing machine (multi-purpose system) and ending at a washing machine (multi-purpose system) Head Type and Spacing Globe GL4906 concealed pendants 155 O Globe GL4906 concealed pendants 155 O 16’ x 16’ area of coverage 16’ x 16’ area of coverage

The Water Supply The Water Supply Current Conditions 1” Tap Street to Meter 1” Tap Street to Meter 1” PVC Meter to House 1” PVC Meter to House New Conditions ¾” iPERL Water Meter ¾” iPERL Water Meter

Design Resources Design Resources NFPA 13D (2013) Residential Sprinkler System Design Made Easy Residential Sprinkler Sizing Table

The Plans The Plans Required Information (NFPA 13D) 1. Address (if known) 2. Size and type of domestic line, including length to city connection 3. Water meter size 4. Current static water pressure 5. Interior walls 6. Model, manufacturer, temperature, orifice size, and spacing requirements of sprinklers 7. Type of pipe 8. Hanger spacing requirement per the pipe manufacturer 9. Riser detail 10. Installing contractor information 11. Preliminary hydraulic calculations

The Plans The Plans

Hydraulics Hydraulics Inputs: Residential Sprinkler Sizing Table AT2904 Pt=Psup-PLsvc-PLm-PLd-PLe-Psp

Hydraulics Hydraulics Allowable Length of Pipe from Meter to Furthest Sprinkler

Hydraulics Hydraulics Allowable Length of Perimter of Loop

Hydraulics Hydraulics Allowable Length of Perimeter of Loop

The Materials The MaterialsMaterials Piping Piping Fittings Fittings Heads Heads Head covers Head covers Hangers Hangers Solvent Cement Solvent Cement Pipe thread putty Pipe thread putty Drain valve Drain valve 2 x 4’s 2 x 4’s Insulation Insulation

The Permit Process The Permit Process Plan Review Submittals Drawings Drawings Hydraulics Hydraulics Cut sheets Cut sheets Water supply information Water supply information

The Install The Install Head Location Marking Clearing Insulation

The Install The Install Installing Pipe and Hangers

The Install The Install Cutting Ceiling Holes Installation of Heads

The Install The InstallRiser Connection to Washer Connection to Water Supply

The Inspection Approvals The Inspection Approvals Rough-in Inspection

The Insulation The Insulation Keeping All Pipe in Heated Space

The Inspection Approvals The Inspection Approvals Final Inspection

The Final Cost The Final Cost Materials & Labor Materials Materials Sprinkler Supplies$1,247 Sprinkler Supplies$1,247 Batt Insulation 156 Batt Insulation 156 Permit 92 Permit 92 Water meter 35 Water meter 35 Labor (45 hours) 0 Labor (45 hours) 0 Total: $1,530 (0.88 /sq. ft.)

Insurance Savings Insurance Savings State Farm Insurance –5% for partial system –10% for total system

Assurance Assurance Peace of Mind My family is protected My family is protected We wont lose everything in a fire We wont lose everything in a fire

Questions?