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8/16/2019 NY1397 Nadeau High Rise Fire Protection
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High ‐Rise Fire Protection
Standpipe and Sprinkler Systems
By:Douglas Nadeau, PE
PresidentRAN Fire Protection Engineering, PC
Tel: 518 ‐275 ‐0791 .
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Wh talk about hi h-rise buildin s?
Focus on the Buildin Code a lication
Purpose of the presentation
My experience
Question
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–
sprinkler retrofitStarted on 12 th floor Delayed call to FireDe artmentSprinkler System disabledFire Pum s shut downFire Damage – 12 th-16 th
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Overview of High-Rise Buildings
Standpipe Systems
Sprinkler Systems
Water Supply
Design Issues
Key Points
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Overview of High ‐Rise Buildings
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Commercial
Mixed occupancy
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Building Occupancy Characteristics Continued
Residential buildin s ma contain senior citizens
or people with special needs.
Residential buildings often have similar floor
plans.
Commercial building floor plans often differ from
.
.
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‐
internal attack.
A fire fighting team working from a riser areunlikel to control a full involved 100 ft x 200 ftfloor area.
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High ‐Rise Characteristic Features Continued
in inner city areas.
High-rises are closed buildings – causing a rapidbuild u of heat and smoke.
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‐Chapter 4 – Special Detailed Requirements
Based on Use and Occupancy - . . .
over 30 feet in height.
Standpipe Protection - §905.3.1 Buildingheight. Class III standpipe systems shall be
level of the highest story is located more than30 feet…
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High ‐Rise Building Code provisions applies to
Buildings having occupied floors located more
level of fire department vehicle access
Some exceptions such as air traffic control
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High ‐Rise Building CodeChapter 4
There is a difference!
Standby required for fire pumps, fire command…
mergency s or egress g ng, re a arm…
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Purpose – installed to providea equa e wa er ow or ose s reams
used to extinguish the fire.
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Building Code and Fire Code
NFPA 14
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High ‐Rise Standpipe System Continued
Buildin Code Exce tion!!!
Class I standpipes are allowed in buildingsequipped throughout with an automaticspr n er system nsta e n accor ance w t§903.3.1.1 or §903.3.1.2.
Note throughout
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‐ –
–
ry u oma c - areas su ec o reez ng
Dry Manual - open parking garages
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High ‐Rise Standpipe System NFPA 14 Overview
” .
” ” –sprinkler protection.
Determine hose valve locations – max travel.
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High ‐Rise Standpipe SystemNFPA 14 Overview
remote 2½ in. hose connection
Generally 500 gpm at hydraulically most
additional (max 1250 gpm)
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NFPA, June 2007
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Purpose – installed to providea equa e proper y pro ec on o
control the fire.
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Building Code and Fire Code
NFPA 13
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High ‐Rise Sprinkler SystemBuilding Code Requirements
. .
Buildings shall be equipped throughout
accordance with NFPA 13.
A secondary water supply where required.
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High ‐Rise Sprinkler System ““equipped equipped throughout throughout ””
§903.3.1.1 NFPA 13 sprinkler systems. -
portion thereof be equipped throughout …
– Exempt locations – where water is bad
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High ‐Rise Sprinkler System Alternative protection . .
protection is permitted in lieu of automatic
1. recognized by the applicable standard
2. Such installations shall be approved bythe code enforcement official.
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High ‐Rise Sprinkler System Building Code Chapter 9
point of connection to riser.
Rubbish chutes need to have sprinkler
.
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High ‐Rise Sprinkler SystemNFPA 13 Overview
constantly attended signaling service
Additional alarm apparatusWaterflow device er floor for the s rinkler s stemsCentral station service is required if a constantsupervision by qualified personnel is not provided
Distinct trouble signal to indicate impairment of thesprinkler system
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High ‐Rise Water Supply Characteristics
Secondary Water Supply
Fire Pump
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On-site water supply
Equal to the hydraulically calculated sprinkler,
, ,
Duration of not less than 30 minutes
Exception for existing buildings
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Zoning - Pressure
Break Tanks
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Series and ParallelFire Pumps
Meant to boost the pressure from a lower
.The design is dependent on both operating
Parallel Fire Pumps
Primary and secondaryMeant to boost flow volume
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‐
es uaPressure
Height(feet) Zones Remarks
65 psi 200 1 max 175
psi rating100 si 120 165 psi 350 1 PRV’s
re uired
65 psi 580 2 Design limit
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on or ng o e wa er eve s recommen e
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What is the biggest issue?
ressure
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Standpipe system pressure limit is 350 psi
Generally (product specific, safety factor of 8)c e u e maxes at ps
Schedule 40 minimum at 350 psi
Reduction to 65 si ma be allowed b the Authority Having Jurisdiction. Generally used forexisting buildings.
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there may be listing problems.
Sprinkler listing are limited to 175 psiun ess a spec a s ng.
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Make sure that water su l will meet s stemdemand.
Combined Standpipe/Sprinkler systems requiredadditional coordination between NFPA 13 and 14
Generally the standpipe will be the most.
THE CASE.
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out for applying current code sectionsrec y o e u ng.
Due Diligence is required to identify.
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ng newpreaction systems
Jocke umsetting
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Existing buildingand systems
Upgrading to meet
requirements.
Listing pressurera ngs
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New Construction
Water Supply
Greatest Demand
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ut e a tat on
Preparing for thefuture tenantrenovation.
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What is the most effective means of fire controlin high-rise buildings?
What is the pressure requirement for thehydraulically most remote hose connection for a
high-rise building standpipe systems?
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Anal ze the Code
Plan earl – communicate with CEO
Address existing buildings uniquely
Address exceptions
PRESSURE!
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High ‐Rise Fire ProtectionStandpipe and Sprinkler Systems
By:Douglas Nadeau, PE
President
RAN Fire Protection Engineering, PCTel: 518 ‐275 ‐0791 .