NY1397 Nadeau High Rise Fire Protection

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 .

NY1397 Nadeau High Rise Fire Protection

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