Safety Design in Highrise Construction

8/3/2019 Safety Design in Highrise Construction

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2011

SafetyDesigninHighRiseConstruction

JohnLee

April26,2011 280Broadway,6th

FloorTrainingRoom

build safe | live safe


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TheNYCDepartmentofBuildingsisaregisteredProviderwithThe

AmericanInstituteofArchitectsContinuingEducationSystems(AIA/

CES).Creditearnedoncompletionofthisprogramwillbereportedto

AIA/CESfor

AIA

members.

Certificates

of

Completion

for

both

membersandnonAIAmembersareavailableuponrequest.

Thisprogram

is

registered

with

the

AIA/CES

for

continuing

professionaleducation.Assuch,itdoesnotincludecontentthatmay

bedeemedorconstructedtobeanapprovalorendorsementbythe

AIAofanymaterialofconstructionoranymethodormannerofhandling,

using,

distributing,

or

dealing

in

any

material

or

product.

Questionsrelatedtospecificmaterials,methods,andserviceswillbe

addressedattheconclusionofthispresentation.

BestPractices


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CourseObjectives

Participantswillbeabletolearnfireprotectionrequirementsforhighrisebuildings Participantswillbeabletoassessspecialrequirementsforegressinhighrisebuildings Participantswillbeabletonavigatethecodewithrespecttospecialuseandoccupancies Participantswillunderstandrecentlyenactedlocallawsthataffectsafetyduringhighriseconstruction

ofhigh

rise

buildings


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TodaysAgenda

Participantswillbeabletounderstandthespecialfireprotectionsystemsrequiredforhighrisebuildings Participantswillbeabletoidentifytheegressprovisionsofthecodeforhighrisebuildings Participantswillbeabletoapplythestructuralintegrityprovisionsforhighrisebuildingsbasedupon

occupancyandseismicimportance

ParticipantswillbeableunderstandthechangestotheInternationalCodesforhighrisebuildingsandthe

relationship

between

the

New

York

City

code

and

theInternationalCode


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NewYorkCity

New

York

is

a

city

of

high

rise

buildings

Home

to

many

of

the

worlds

first

and

tallestbuildings


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InternationalCodeCouncil

NYChasadoptedtheInternationalCode

Councilbody

of

construction

codes

NYCisanactiveparticipantinthecodedevelopmentprocess


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HighRiseBuildings

SpecificallyaddressedinsectionBC403

Definedashavingoccupiedfloorslocated

morethan

75

feet

above

the

lowest

level

offiredepartmentvehicleaccess


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HighRiseBuildings

75

ft75ft

1968Code:2008Code:X

75

ft75

ft

AverageCurb

Elevation Lowest

Level

of

FD

Vehicle

Access

1968Code:2008Code:


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AutomaticSprinklerSystems

Requiredinallbuildingswithfloors>55feetin

heightand

with

an

occupant

load

>30

Requiredinallhighrisebuildingsregardlessofoccupantload(asdefinedinBC403)


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FireDetection&FireAlarms

Highrisebuildingsarerequiredtobeprovidedwith:

Automaticfiredetectionconnectedto

automaticfire

alarm

system

Emergencyvoice

/alarm

communicationsystem


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VoiceCommunicationSystems

ALL highriseoccupanciesrequiretwowayvoicecommunicationsystemsforusebyFDNY

Except:I1,I2andR2occupancies


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VoiceCommunicationSystems

Highriseresidentialbuildings>125ftmust

haveone

way

voice

communication

systems

Requiredfromthelobbypaneltoeach

dwelling

unit

and

vertical

exit


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FireCommandCenter

RequiredinALL

highriseoccupanciesinthe

lobbyon

the

entrance

floor

for

Fire

Departmentoperations


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EmergencyPowerSystems

Requiredinhighrisebuildingsand

residentialbuildings

>125

feet

to

provide

backuppowerforemergencysystems


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ElevatorLobbies

Whenelevatorsopenontoafireresistance ratedcorridorOR

WhenelevatorsserveaGroupBoccupancywith

four

or

more

stories

Elevator

SmokePartitionElevatorLobbyFireRatedCorridor


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ImpactResistantStairs/Elevators

Stairandelevatorenclosuresinhighrise

buildingsmust

be

constructed

of

impact

resistantwalls


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StairDesign

WiderStairwayWidth

44 min.stairwaywidthrequiredinALL occupanciesexcept:Stairways

that

handle

50

persons

cumulativeforallstories

R2occupancies

not

more

than

125 highandeachstairwayserves


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StairDesign

EaseofStep

7 max.risersand11 min.treadsrequiredinALLoccupanciesexcept:oR

2occupancies

oR2dwellingunits

oR3residentialoccupancies


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SmokeProofEnclosures

OpenExteriorBalcony

ExteriorWall

FireRated

Enclosure

Open Exterior Balcony

FireRatedEnclosure

44

OpeningtoExterior

ExteriorWall

72

Naturally Ventilated Vestibule


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PostFireSmokePurgeSystems

Requiredinallhighrisebuildingsandother

buildingslisted

in

section

BC

912

Intendedforthetimelyrestorationofoperations

and

overhaul

activities

once

afire

is

extinguished


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ElevatorsasMeansofEgress

Maybeusedasacomponentofaccessiblemeans

ofegress,exceptin:

1.

Residentialbuildings> 125feetinheight

1. Inotheroccupancieswheretheoccupiedflooris> 75 abovethelowestleveloffiredepartment

access


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Photoluminescent RequirementsAllnewlyconstructedhighrisebuildings,exceptR2occupancies


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SuperHighRiseBuildings

Buildingstallerthan300feet:

Redundantautomaticandgravityfedwater

supplies

Largertanksizesforonsitestorageofwaterfor

firefighting

purposes

DedicatedexpressSiameseriser Zonedsystem

Onsitesecondarywatersupplyrequiredatbuildings

taller

than

300

feet

and

in

Seismic

Design

CategoryCorD


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StructuralDesign

ProposedStructuralIntegrityProvisions

Applicabletoallbuildings

o

VehicularImpactDesignLoadrequirement,Section1625.5

o

HighpressureGasexplosionDesignLoadrequirement,Section1625.6

o

ContinuityandTiesrequirements Requiringadditionalstrengthanddetailing

ofmembersandtheirconnections

SteelConstructionSection2213

Structural

Steel

Members

CompositeConcreteSlabsonMetalDeck

ConcreteConstructionSection1917

Cast

In

Place

Concrete

PrecastConcrete

MasonryConstruction

Section2114

Bearing

walls

Piers&Columns


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StructuralDesign

StructuralIntegrity KeyElementAnalysis

KeyElementAnalysis Section1626

TwoOptions:o

Alternate

Load

Path

Method

Design

to

preventa disproportionatecollapseassumingaKeyElement

willfailduetoanextremeevent

oSpecificLocal

Resistance

Method

Designkeyelementsforcodeprescribedloads


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StructuralDesign(cont)

KeyElement

Analysis

required

for:

Buildingsmorethan600feet(183m)tallormorethan1,000,000

square

feet(92903m2)

EssentialFacilitieslargerthan50,000squarefeet(4645m2)

Building

with

an

Aspect

Ratio

greater

than

7

Buildingstallerthan7storieswhereonestructuralmembersupports

morethan15%oftheaggregatebuildingarea

Buildingsdesignedusingnonlineartimehistoryanalysisorutilizing

specialseismicenergydissipationsystems(BaseIsolationorDampers)

Structural

Peer

Review

by

a

qualified

independent

structural

engineer

also

required Section1627


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BuildingUnderConstruction

StandpipeAirPressurizedAlarmsLocalLaw64of2009

Airpressurizedalarmsonstandpipesystemsat:o

Newbuildings75feet+

o

Full

Demolitions

Required:

o

Drawingsofalarmsystem

o

Alteration2StandpipeApplication&Permit

Testing


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BuildingsUnderConstruction

StandpipeHydrostaticPressureTestingLocalLaw63of2009

Hydrostatic

pressure

tests

must

be

performed

on

standpipes

at:

o

Newbuildings75feet+

o

FullDemolitions

o

Certainalterationwork

Required:

o

Alteration2StandpipeApplication&Permit

Testing


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WhereDoWeGofromHere?


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WhatsHappeningOutsideNYC?

ChangestotheICC

Buildingstallerthan420feet:

Two sprinklerrisersservingeachsprinklerzone Three exitstairs

oExceptionforR2(residential)buildings

oExceptionforbuildingswithoccupantevacuationelevator


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Questions?ThisconcludestheAmericanInstituteofArchitectsContinuingEducationSystemsCourseNYCDepartmentofBuildings

BuildingsUniversityAIAPointofContact:

AllisonGinsburg

[email protected]

2125664415

Documents

Safety Design in Highrise Construction