ASTM E2513-07(2019)e1

Standard Specification for Multi-Story Building External Evacuation Platform Rescue Systems

ABSTRACT
This specification covers the specifications, safety requirements, performance, design, practices, marking instructions and test methods for multi-story building external evacuation platform rescue systems (PRS) for emergency escape of persons who cannot use the normal means of egress to a safe area and for vertical transport of emergency responders. This specification is applicable only to PRSs that are permanently installed, designed for multi-cycle and repetitive use, and where descent is controlled to limit speed before arrival at a floor or landing zone. Conversely, this specification does not cover platform devices that are used primarily for purposes other than emergency evacuation and/or access, helicopters or other flying platforms, a PRS utilizing platforms that can be transported to or between buildings during operations, and a PRS using driving methods other than positive drive as drum and ropes.
SCOPE
1.1 This specification covers the specifications, safety requirements, performance, design, practices, marking instructions and test methods for Multi-Story Building External Evacuation Platform Rescue Systems (PRS) for emergency escape of persons who cannot use the normal means of egress to a safe area and for transport of emergency responders vertically.  
1.2 This specification is applicable only to PRSs:  
1.2.1 Permanently installed;  
1.2.2 Designed for multi-cycle and repetitive use; and  
1.2.3 Where descent is controlled to limit speed before arrival at a floor or landing zone.  
1.3 This specification does not cover:  
1.3.1 Platform devices that are used primarily for purposes other than emergency evacuation or access, or both;  
1.3.2 Helicopters or other flying platforms;  
1.3.3 Any other devices covered under/within ASME A17.1;  
1.3.4 A PRS utilizing platform(s) that can be transported to or between buildings during operations; and  
1.3.5 A PRS using driving methods other than positive drive as drum and ropes.  
1.4 Operation of a PRS is limited to trained and authorized operators.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5.1 Exception—In 5.2.1 and 5.2.2, inch-pound units are provided in parentheses after the SI units for information only.  
1.6 Table of Contents:    
Section  
Scope  
1  
Referenced Documents  
2  
Terminology  
3  
Building Interface Requirements and Installation  
4  
Environmental Conditions  
5  
Fire and Smoke Protection  
6  
Material Requirements  
7  
Structural, Mechanical and Stability Calculations  
8  
Mechanical and Physical Properties  
9  
Buffers and Guides  
10  
Suspension Wire Rope and Wire Rope Connections  
11  
Hoisting Machines and Pulleys  
12  
Means to Prevent Falling of the Platform(s)  
13  
Electrical Power Requirements  
14  
Operation, Control and Communication  
15  
Accompanying Documents  
16  
Markings, Warnings and Operating Instructions  
17  
Verification of Safety Requirements  
18  
Quality Assurance  
19  
Maintenance  
20  
Keywords  
21  
Type Tests  
Annex A1  
Tests and Verifications Before First Use  
Annex A2  
Periodic Verifications  
Annex A3  
PRS Utilization Procedures  
Annex A4  
Rationale Statement  
Appendix X1  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT...

General Information

• Status: Published
• Publication Date: 31-Jul-2019
• ICS: 13.220.10 - Fire-fighting
• ICS: 53.020.99 - Other lifting equipment
• Technical Committee: E06 - Performance of Buildings
• Drafting Committee: E06.77 - High Rise Building External Evacuation Devices

Relations

• Replaces: ASTM E2513-07(2012) - Standard Specification for Multi-Story Building External Evacuation Platform Rescue Systems
• Effective Date: 01-Aug-2019
• Refers: ASTM E136-24a - Standard Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750 °C
• Effective Date: 01-Mar-2024
• Refers: ASTM E136-24 - Standard Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750 °C
• Effective Date: 01-Feb-2024
• Refers: ASTM E84-23d - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Dec-2023
• Refers: ASTM E84-23c - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Sep-2023
• Refers: ASTM E84-19b - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Jul-2019
• Refers: ASTM E84-19a - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 15-Apr-2019
• Refers: ASTM E84-19 - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Mar-2019
• Refers: ASTM E136-19 - Standard Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750°C
• Effective Date: 01-Feb-2019
• Refers: ASTM E84-18b - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Oct-2018
• Refers: ASTM E84-18a - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Jul-2018
• Refers: ASTM E84-18 - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Mar-2018
• Refers: ASTM E84-17a - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Nov-2017
• Refers: ASTM E84-17 - Standard Test Method for Surface Burning Characteristics of Building Materials
• Effective Date: 01-Aug-2017
• Refers: ASTM E136-16a - Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C
• Effective Date: 01-Nov-2016

Overview

ASTM E2513-07(2019)e1 is an international standard that specifies the requirements for Multi-Story Building External Evacuation Platform Rescue Systems (PRS). Developed by ASTM International, this standard addresses critical safety and performance aspects for PRS designed for emergency scenarios when normal egress routes are inaccessible. These permanently installed systems enable the controlled evacuation of building occupants and vertical transport of emergency responders, with features built for repetitive, multi-cycle use. The document covers specifications for system design, installation, operation, safety practices, marking instructions, and testing methods to ensure reliable and safe emergency evacuation from multi-story structures.

Key Topics

• Scope and Purpose: The standard defines acceptable practices, performance, and safety requirements for PRSs, addressing components such as system design, building integration, environmental resilience, fire protection, and maintenance.
• System Criteria:
  • Permanently installed PRS: Intended for repetitive emergency use, not temporary or transportable platforms.
  • Controlled Descent: Mechanisms to limit platform speed prior to reaching floors or landings, reducing accident risks.
  • Operator Qualification: Specifies that only trained and authorized personnel may operate PRS equipment.
• Exclusions:
  • Devices intended primarily for maintenance rather than emergency evacuation
  • Helicopters or other aerial platforms
  • Systems falling under other codes, such as ASME A17.1 elevator safety
  • PRSs not using positive drive mechanisms with drum and ropes
• Design and Performance: Outlines requirements for structural resilience, fire and smoke protection, environmental durability, electrical safety, and proper signage.
• Testing and Inspection: Ensures that systems meet minimum thresholds for functionality, reliability, and occupant safety through standardized test methods and periodic verification.

Applications

This ASTM standard is highly relevant for:

• High-rise and Multi-story Buildings: Especially where traditional stairways or exits may be compromised during an emergency due to fire, disability access issues, or blockages.
• Emergency Response Planning: Building owners and emergency service teams use these specifications to select, install, and maintain PRSs as integral parts of building evacuation strategies.
• Facility Management: Offers guidance for integrating PRSs with existing building infrastructure, power supplies, and safety plans.
• Compliance and Regulation: Assists authorities, architects, and engineers in meeting local and international code requirements for occupant safety and emergency evacuation.

By adhering to ASTM E2513-07(2019)e1, stakeholders can demonstrate due diligence in protecting building occupants in emergencies, facilitate efficient rescues, and support the safe deployment of emergency responders.

Related Standards

For comprehensive compliance and effective system integration, consider these referenced or related standards:

• ASME A17.1 (Safety Code for Elevators and Escalators): Not applicable to PRS, but relevant for distinguishing between elevator systems and external evacuation platforms.
• EN 81 series (Safety Rules for Lifts): European standards for electric lifts, related to vertical occupant transport.
• ISO 14121 & ISO 14798: Standards for risk assessment and reduction methodologies for machinery; important for hazard analysis of PRS installations.
• NFPA 255, ASTM E84, and UL 723: Standards governing fire and smoke characteristics of building materials.
• Building Codes and Fire Safety Regulations: Local adaptations may reference parts of this ASTM standard for PRS installations.

Practical Value

Implementing the ASTM E2513-07(2019)e1 standard ensures that multi-story emergency evacuation systems:

• Provide controlled, repeatable, and safe evacuation pathways
• Integrate seamlessly with modern building designs and emergency protocols
• Mitigate a variety of risks during emergencies, enhancing overall building safety for occupants and responders
• Offer regulators, owners, and designers a roadmap for system selection, design, and maintenance to satisfy current safety requirements

Adhering to this standard also promotes interoperability and international compliance, fostering safer building environments globally.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ϵ1
Designation:E2513 −07 (Reapproved 2019)
Standard Specification for
Multi-Story Building External Evacuation Platform Rescue
Systems
This standard is issued under the fixed designation E2513; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Subsection 1.5.1 was added editorially and other editorial changes were made throughout in September 2019.
1. Scope 1.5.1 Exception—In 5.2.1 and 5.2.2, inch-pound units are
provided in parentheses after the SI units for information only.
1.1 This specification covers the specifications, safety
requirements, performance, design, practices, marking instruc-
1.6 Table of Contents:
tions and test methods for Multi-Story Building External
Section
Evacuation Platform Rescue Systems (PRS) for emergency
Scope 1
escape of persons who cannot use the normal means of egress Referenced Documents 2
Terminology 3
to a safe area and for transport of emergency responders
Building Interface Requirements and 4
vertically.
Installation
Environmental Conditions 5
1.2 This specification is applicable only to PRSs:
Fire and Smoke Protection 6
1.2.1 Permanently installed;
Material Requirements 7
Structural, Mechanical and Stability 8
1.2.2 Designed for multi-cycle and repetitive use; and
Calculations
1.2.3 Where descent is controlled to limit speed before
Mechanical and Physical Properties 9
arrival at a floor or landing zone. Buffers and Guides 10
Suspension Wire Rope and Wire Rope 11
1.3 This specification does not cover:
Connections
Hoisting Machines and Pulleys 12
1.3.1 Platform devices that are used primarily for purposes
Means to Prevent Falling of the Platform(s) 13
other than emergency evacuation or access, or both;
Electrical Power Requirements 14
1.3.2 Helicopters or other flying platforms;
Operation, Control and Communication 15
Accompanying Documents 16
1.3.3 Any other devices covered under/within ASME
Markings, Warnings and Operating 17
A17.1;
Instructions
1.3.4 APRS utilizing platform(s) that can be transported to
Verification of Safety Requirements 18
Quality Assurance 19
or between buildings during operations; and
Maintenance 20
1.3.5 APRSusingdrivingmethodsotherthanpositivedrive
Keywords 21
as drum and ropes.
Type Tests Annex A1
Tests and Verifications Before First Use Annex A2
1.4 Operation of a PRS is limited to trained and authorized
Periodic Verifications Annex A3
operators. PRS Utilization Procedures Annex A4
Rationale Statement Appendix X1
1.5 The values stated in SI units are to be regarded as
1.7 This standard does not purport to address all of the
standard. No other units of measurement are included in this
safety concerns, if any, associated with its use. It is the
standard.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
This specification is under the jurisdiction of ASTM Committee E06 on
mine the applicability of regulatory limitations prior to use.
Performance of Buildings and is the direct responsibility of Subcommittee E06.77
on High Rise Building External Evacuation Devices.
1.8 This international standard was developed in accor-
Current edition approved Aug. 1, 2019. Published September 2019. Originally
dance with internationally recognized principles on standard-
approved in 2007. Last previous version approved in 2012 as E2513–07 (2012).
ization established in the Decision on Principles for the
DOI: 10.1520/E2513–07R19E01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
ϵ1
E2513−07 (2019)
Development of International Standards, Guides and Recom- 2.7 Underwriters Laboratories of Canada Standard:
mendations issued by the World Trade Organization Technical CAN-ULC-S102.2Standard Method of Test for Surface
Barriers to Trade (TBT) Committee. Burning Characteristics of Flooring, Floor Coverings, and
Miscellaneous Materials and Assemblies
2. Referenced Documents
2.8 EN (European Committee for Standardization) Stan-
dards:
2.1 ASTM Standards:
EN 81.1Safety Rules for the Construction and Installation
A36/A36MSpecification for Carbon Structural Steel
of Lifts - Part 1: Electric Lifts
E84Test Method for Surface Burning Characteristics of
EN 341Personal Fall Protection Equipment - Descender
Building Materials
Devices for Rescue
E136TestMethodforAssessingCombustibilityofMaterials
EN1808SafetyRequirementsforSuspendedAccessEquip-
Using a Vertical Tube Furnace at 750°C
ment - Design Calculations, Stability Criteria, Construc-
E631Terminology of Building Constructions
tion - Examinations and Tests
G153Practice for Operating Enclosed Carbon Arc Light
EN 12015Electromagnetic Compatibility - Product Family
Apparatus for Exposure of Nonmetallic Materials
Standard for Lifts, Escalators and Moving Walks - Emis-
2.2 ASCE Standard:
sion
ASCE 7–05Minimum Design Loads for Buildings and
EN 12016Electromagnetic Compatibility - Product Family
Other Structures
Standard for Lifts, Escalators and MovingWalks - Immu-
2.3 ASME Standards:
nity
A120.1Safety Requirements for Powered Platforms and
EN 61000-6-2Electromagnetic Compatibility (EMC)—Part
TravelingLaddersandGantriesforBuildingMaintenance
6-2 Generic Standards—Immunity Standard for Industrial
for Building Maintenance
Environments
A17.1Safety Code for Elevators and Escalators
EN 61000-6-3Electromagnetic Compatibility (EMC)—Part
2.4 ANSI Standards:
6-3 Generic Standards—Emission Standard for
ANSI/ASSE A10.4 Safety Requirements for Personnel
Residential, Commercial and Light-Industrial Environ-
Hoists and Employee Elevators on Construction and
ments
Demolition Sites
EN60529DegreesofProtectionProvidedbyEnclosures(IP
ANSI/AWS D1.1Structural Welding Code-Steel
Code)
ANSI/AWS D14.4Specification for Welded Joints in Ma- 10
2.9 BSI (British Standards Institute) Standard:
chinery and Equipment
BSI PD 7974-6Application of Fire Safety Engineering
ANSI Z535.4Product Safety Signs and Labels
Principles to Fire Safety Design of Buildings. Human
2.5 NFPA Standards:
Factors. Life Safety Strategies. Occupant Evacuation,
ANSI/NFPA 70National Electrical Code
Behaviour and Condition (Sub-system 6)
NFPA 255Standard Method of Test of Surface Burning
2.10 ISO Standards:
Characteristics of Building Materials
ISO 9000Quality Management
NFPA1971StandardonProtectiveEnsemblesforStructural
ISO 9002Quality Systems--Model for QualityAssurance in
Fire Fighting and Proximity Fire Fighting
Production, Installation and Servicing
NFPA1976Standard on Protective Ensemble for Proximity
ISO 14121Safety of Machinery--Principles of RiskAssess-
Fire Fighting
ment
2.6 UL Standards:
ISO14798Lifts(Elevators),EscalatorsandMovingWalks--
UL 723Standard for Test for Surface Burning Characteris-
Risk Assessment and Reduction Methodology
tics of Building Materials
2.11 NEMA Standard:
UL1523SafetyControlled-DescentDevicesforMarineUse
NEMA 250Enclosures for Electrical Equipment
3. Terminology
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.1 Refer to Terminology E631 for standard terminology
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
related to building construction.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 8
Available fromAmerican Society of Civil Engineers (ASCE), 1801Alexander Available from Underwriters Laboratories of Canada, 7 Underwriters Road,
Bell Dr., Reston, VA 20191, http://www.asce.org. Toronto, Ontario, Canada M1R 3A9, http://canada.ul.com.
4 9
Available from American Society of Mechanical Engineers (ASME), ASME Available from European Committee for Standardization (CEN), Rue de la
International Headquarters, Two Park Ave., New York, NY 10016-5990, http:// Science 23, B - 1040 Brussels, Belgium, http://www.cen.eu.
www.asme.org. Available from British Standards Institute (BSI), 389 Chiswick High Rd.,
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., London W4 4AL, U.K., http://www.bsigroup.com.
4th Floor, New York, NY 10036, http://www.ansi.org. Available from International Organization for Standardization (ISO), ISO
Available from National Fire Protection Association (NFPA), 1 Batterymarch Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
Park, Quincy, MA 02169-7471, http://www.nfpa.org. Geneva, Switzerland, http://www.iso.org.
7 12
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Available from National Electrical ManufacturersAssociation (NEMA), 1300
Northbrook, IL 60062, http://www.ul.com. N. 17th St., Suite 900, Arlington, VA 22209, http://www.nema.org.
ϵ1
E2513−07 (2019)
3.2 Definitions of Terms Specific to This Standard: 3.2.12 descending cycle—sequence of events, starting from
themomentthePRSoccupantssafelyentertheplatform(s)and
3.2.1 abnormal conditions—extremeconditionssuchassys-
ending at their exit from the platform(s) in the landing zone.
tem malfunctions or environmental conditions beyond the
conditionsinwhichthesystemwasdesignedtofunctionbythe
3.2.13 descent energy—energy (measured in Joules) that
manufacturer.
resultsfromtheproductofdescentheight,thedescentloadand
the number of descents.
3.2.2 anti-tilt detection device—device which stops PRS
motion when the longitudinal slope of the platform reaches a
3.2.14 drive unit—complete assembly comprising a prime
pre-set angle.
mover, brake and gearing that drives the platform(s), absorbs
the descent energy and controls the movement of the plat-
3.2.3 approved—accepted as satisfactory by a constituted
form(s).
administrative or regulatory authority.
3.2.15 duty cycle—the proportion of time during which a
3.2.4 biparting door—a vertically or horizontally sliding
component, device, or system is to be operated.
door consisting of two or more sections, arranged so the
3.2.16 emergency response personnel (responders)—
sections or groups of sections open away from each other and
personnel who respond to fire, medical, and other emergency
are interconnected so all sections operate simultaneously.
situations for the preservation of life and property.
3.2.5 building evacuation openings—building’s evacuation
3.2.17 evacuation—(1) an organized and controlled move-
exits to the platform(s) such as windows or other openings.
ment of persons in a building from a dangerous area to a safe
3.2.6 building evacuation strategy—arrangementsandplans
zone; (2) movement of persons during an evacuation, using a
for evacuation of the building in a catastrophic event such as a
PRS, from a dangerous area in a building to a safe zone,
fire.
usually to the landing zone, but can also be from floor to floor.
3.2.7 buffer—a device designed to stop the PRS in limited
3.2.18 evacuation floors—floors permitting access of per-
deceleration by storing or absorbing and dissipating the super-
sons to the platform(s) as determined by the building evacua-
fluous kinetic energy of the platform(s), either by hydraulic or
tion strategy.
spring action depending on PRS speed.
3.2.18.1 Discussion—Some floors may not have access
3.2.8 bypass mode of operation—bypass mode of operation
because of obstructions, or may be at safe zone level or below
achieved by means of a manually operated device or standby
ground.
power supply that allows platform(s) to descend at a limited
3.2.19 guide rail—fixedverticalsectionsdesignedtorestrict
speed with rated load in case of malfunction of the normal
lateral movement of the platform due to wind or other outside
operation system or loss of power.
force.
3.2.9 certifying organization—an approved or accredited
3.2.20 guide shoes, backup guide shoes, and guide rollers—
independent organization concerned with product evaluation,
devices attached to the platform frame that cause the platform
that maintains periodic inspection of listed/certified equipment
to be guided by the guide rail members.
or material and whose listing/certification states whether that
3.2.21 landing zone—area determined by the building
equipment meets appropriate standards or has been tested and
evacuation strategy as the principal exit area from PRS
found suitable for use in a specified manner.
platform(s), and entrance for operators and emergency re-
3.2.9.1 Discussion—“Accredited,” in this definition, means
sponders.
that an organization has been evaluated and approved by an
3.2.21.1 Discussion—Usually, the landing zone is on the
AuthorizedAgency to operate a Certification/Listing program,
ground floor, but it can be at other levels due to building-
and is designated as such in a publication of the Authorized
specific circumstances, for example, on top of a plaza or
Agency.
garage.
3.2.10 competent person—a designated person that is suit-
3.2.22 log—a record of operation or maintenance of a PRS
ably trained and qualified by knowledge and practical experi-
installation in which operators, responders, or maintenance
enceandprovidedwiththenecessaryinstructionstoenablethe
personnel record anything that has or could affect the safe
required task to be carried out safely.
operation of the equipment and action taken to mitigate the
3.2.11 control devices—electrical contacts, relays, switches,
deficiency.
push buttons, levers or other devices used to govern the
3.2.23 maintenance—normal lubrication, adjusting,
starting, stopping, direction of motion, acceleration, speed and
tightening, cleaning, protecting and inspecting of the hoist,
retardation of the platform(s).
appendages and their power supplies.
3.2.11.1 automatic floor-stop operation—movement initi-
3.2.23.1 Discussion—It is not the repair, replacement or
ated with a definite reference to the destination (floor or
restoration of worn, damaged or broken parts, components or
landing zone) where slowing down and stopping of the PRS is
accessories.
automatic.
3.2.24 normal terminal stopping device—a device or de-
3.2.11.2 continuous-pressure operation—buttons, switches vicesthatslowdownandstopthePRSautomaticallyatornear
or levers used to control movement of the PRS that must be the landing zone independently of the functioning of the
manually held in the actuating position. control device.
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E2513−07 (2019)
3.2.25 overload detection device—device which acts auto- continuation of an unsafe condition, warning of, limiting or
matically to stop the motion of a platform if the load in the eliminating the effects of a possible unsafe condition.
platform reach(es) its tripping load for lifting and descending.
3.2.39.1 safety circuit—a portion of the PRS control wiring
3.2.26 over-speed governor—device that causes the PRS to that includes a number of mechanical switch contacts, solid
stop, by activating a secondary device, when the PRS attains a state electronic devices, and relay contacts in series.
predetermined speed.
3.2.39.2 Discussion—Usually includes the final limits
3.2.27 platform—portion of the PRS designed to carry switches, emergency stop button, governor contacts and a
persons and equipment. safety-contact. The cause of operation of any one of these
contacts constitutes a possible hazardous operation of the PRS
3.2.28 platform operator—person trained and authorized to
and therefore such operation stops all PRS operation.
operate a platform and responsible for the evacuees’ safe
entrance into and exit from the platform, as well as communi- 3.2.39.3 safety contact—an electrical device, which pre-
cations with the PRS Operator. vents operation of a separate unit (for example, the driving
machine), by the normal control device unless the switch (for
3.2.29 platform rescue system (PRS)—an enclosed platform
example, limit switch) is in the closed position.
orsetofenclosedplatforms,movingverticallyalongguidesor
other means on the exterior of a building, intended for the 3.2.40 secondary device—device(secondarybrakeorsafety
evacuation of multiple occupants to a safe zone and may have gear) intended to stop the descent of the PRS under critical
the capability of transporting emergency responders. conditions such as: over speed, breaking of a suspension wire
rope, or failure of the hoist.
3.2.29.1 PRS, multi-platform—a platform rescue system
with two or more platforms, connected vertically. 3.2.40.1 safety gear—a mechanical device that stops and
holds the platform stationary on the guide rail in event of
3.2.29.2 Discussion—PRSs consist of (a) platform(s) sus-
predetermined over speeding in downward direction or break-
pended from a suspension rig and a hoist, operating either on
ing of a suspension wire rope, or both.
rails or concrete track. May also have monorails with travers-
ing trolleys or other suspension rigs, for example, davits, fixed 3.2.40.2 secondary brake—acts directly on the drum, trac-
to the building, from which (a) platform(s) may be suspended.
tion sheave, or final drive shaft to stop descent of the platform
(See Fig. 1.) in case of hoist failure.
3.2.29.3 PRS, single platform—a platform rescue system 3.2.41 service brake—mechanical brake automatically ap-
with only one platform. plied by stored energy (for example, spring force) until
released with an external sustained power supply (electrically,
3.2.30 prime mover—source of mechanical power for the
hydraulically or pneumatically) under the control of the opera-
hoisting device.
tor or automatically.
3.2.31 PRS commander—PRS operator, in charge of super-
3.2.42 slewing—circular horizontal movement of the sus-
vising and commanding the platform operators.
pension rig about a vertical axis.
3.2.32 PRS occupants—all persons traveling within the
3.2.43 storage unit—place where the platform(s) are held
PRS: evacuees, emergency responders, platform operators.
on/in the building when the PRS is in stand-by mode.
3.2.33 PRS operator—person trained and authorized to
3.2.44 suspension rig/davit—crane-like device (usually one
operate the PRS.
of a pair) for suspending or lowering equipment.
3.2.34 PRS pathway—a vertical distance; the space traveled
3.2.45 terminal speed-limiting device—automatically re-
by the platform(s), and the space occupied by its support
duces the speed of (a) platform(s) approaching the landing
members.
zone. This occurs independently of the normal terminal stop-
3.2.35 rated load (RL)—maximum recommended load that
ping devices if these devices fail to slow down the PRS.
can be exerted on the PRS, as specified by the manufacturer,
3.2.46 total suspended load (TSL)—static force imposed on
consisting of the total weight of evacuees, and emergency
the suspension point(s), consisting of the rated load of
response personnel with their tools and equipment.
platform(s), self load of platform(s), ancillary equipment, wire
3.2.36 rated speed—averagespeedmeasuredduringupward
ropes and electric cable, if any.
or downward travel of the PRS with its rated load. PRS may
3.2.47 traversing—longitudinal movement of a suspension
have two different speeds: upward rated speed and downward
rig.
rated speed.
3.2.48 tripping load—static load which causes the overload
3.2.37 repair—replacementorrestorationofworn,damaged
device to operate.
or broken parts, components or accessories.
3.2.37.1 Discussion—Repair is not maintenance or altera- 3.2.49 trolley rail—rails, normally installed at roof level, to
tion. support and guide a trolley unit.
3.2.38 responder—see emergency response personnel (re- 3.2.50 trolley unit—suspension rig mounted on wheels
sponders). which is capable of traversing.
3.2.39 safety device—a mechanism (safety circuit or safety 3.2.51 winding-drum machine—a geared-drive machine in
contact) placed in use for the specific purpose of: preventing which hoisting ropes are fastened to and wind on a drum.
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E2513−07 (2019)
FIG. 1PRS Overview
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3.2.52 working load limit (WLL)—maximum mass or force be based on the limitations (stresses, deflections, and so forth.)
whichaPRSisauthorizedtosupportingeneralservice,unless establishedbynationallyrecognizedstandardsorbyequivalent
noted otherwise. standards found acceptable to the Authority Having Jurisdic-
3.2.52.1 Discussion—TheWLLof a component is specified tion (AHJ).
by the manufacturer.
4.5 Landing Zone shall be designed:
3.3 may—means permissive.
4.5.1 TowithstandallforcesimpartedbythePRSduringall
modes of operation including impact force.
3.4 shall—means mandatory.
4.5.2 With dimensions and clearances necessary for safe
3.5 should—means advisory.
operation.
4. Building Interface Requirements and Installation
4.6 Access:
4.1 General—Prior to PRS installation, all loads and struc- 4.6.1 PRS as installed shall enable easy and safe access to
machineroomandcomponentsubsystemsthatrequireperiodic
tural attachments to the building shall be approved by a
registered architect or professional engineer. inspection, testing, maintenance or repair. This shall include
permanent electric light fixture(s) runways, ladders, or plat-
4.2 Installation Design Record—The following shall be
forms that may be a part of the building.
provided to the purchaser:
4.6.2 Building evacuation openings shall:
4.2.1 Design load information;
4.6.2.1 Be modified, if necessary, to allow safe access and
4.2.2 Portions of building supported or contacted by the
entrance from the building to platform(s) and from platform(s)
equipment, or both;
to the building (see Fig. 2);
4.2.3 Engineering drawings of equipment anchorage and
4.6.2.2 Be no less than: 800 mm in width, and 1200 mm in
their means of attachment or support;
height;
4.2.4 Certification verifying compliance of design with this
4.6.2.3 Take into consideration access to platform(s) for
specification (see 18.1.1); and
people with physical limitations (for example, people with
4.2.5 Certification verifying compliance of the installation
disabilities, elderly persons and young children);
with this specification (see 18.1.2), and compatibility of the
PRS with the building in accordance with all other portions of
NOTE 1—Even with the access accommodations, it should be assumed
Section 4. that these people will be assisted by others.
4.6.2.4 Contain an access ramp or stairs, if needed, to allow
4.3 Risk Assessment:
safe access to the platform(s); and
4.3.1 PRS manufacturer shall accomplish a hazard analysis
4.6.2.5 Be closed with a door or window that shall:
and risk assessment for the site-specific PRS installation. The
(1)Be provided with a means of locking, which permits
riskassessmentshallcoverallaspectsofthebuildinginterfaces
opening from the PRS;
withthePRSduringitsentirelifecycle(installation,operation,
(2)Be opened from the building only by special tools or
maintenance).
service key installed in accordance with AHJ requirements;
4.3.2 The risk assessment shall consider every mode of
(3)Beconstructedtoreturnautomaticallytotheclosedand
operation envisaged. The aim is also to ensure that the
locked position;
installation design and configuration shall consider the local
(4)Include a vision panel, to enable seeing the platform(s)
surroundingsandthemostadversesituationsinordertoensure
arrive; and
that an acceptable level of risk is attained.
(5)Not open into the PRS pathway.
4.3.3 The hazard analysis and risk assessment shall be
provided to the purchaser and local authorities.
4.7 Electrical Requirements shall be in accordance with the
4.3.4 For risk assessment methodology refer to ISO 14798,
following:
ISO 14121 or equivalent.
4.7.1 General design shall comply with the applicable
4.3.5 Riskreductionmeasuresshallbeappliedtoreducethe
requirementsoftheNationalElectricalCodeeditionineffectat
risk, where relevant.
the time of PRS manufacture, for example, grounding, wire
4.3.6 The risk assessment shall, at a minimum, take into
sizes, motors, controls, wiring, and enclosures;
account:
4.7.2 Communications and power connections shall be
4.3.6.1 Location of PRS on the building, relative to the
weatherproof and protected from damage and abrasion;
escape routes;
4.7.3 If connectors are used, each communication and
4.3.6.2 Accessibility of building evacuation openings;
power outlet shall be provided with an adjacent strain relief
4.3.6.3 Interference with the PRS pathway by suspending
anchor to prevent force movement of the equipment from
devices, balconies, setbacks, and so forth;
applying a force to the outlet or conduit leading to the outlet;
4.3.6.4 Human error that may interfere with the correct
4.7.4 PRSelectricalpower(seeSection14)shallbefroman
operationofthePRS,forexample,openingofwindowswithin
independent source and independent circuit, such that a failure
the PRS pathway; and
in the building’s power system cannot, by itself, cause loss of
4.3.6.5 Extreme environmental conditions.
power in the PRS.
4.4 Load Capability—Building shall have the capacity to 4.7.4.1 Exceptions:
sustain all loads imposed by the PRS, during any mode of (1)Ifthebuildingemergencypowersystemisindependent
operation. The design requirements for each installation shall fromthebuildingmainpowerandhascapacitytoaddthePRS
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FIG. 2Illustration of Building Evacuation Opening
power requirements, it may be used as the PRS secondary 5.3.3 The manufacturer of the PRS shall design, install and
power supply (required in 14.1.1). wiretheequipmentandsub-assemblies,takingintoaccountthe
(2)PRS sub-systems that require continuous power supply recommendations of the supplier(s) of the sub-assemblies, to
whilethePRSisinstandbyposition,suchasthecontrolsystem ensure that effects of electromagnetic disturbances thereon
or other battery charges subsystems, may be connected to the shall not lead to unintended operation.
building power supply.
5.4 Humidity and Rain—System parts, mechanisms, electri-
4.7.5 The power circuit shall be provided with a cutoff
cal cabinets and cabinets containing electronic components
switch that can be locked in the “OFF” position. The switch
shall be rated as follows:
shall be conveniently located in the machine room, to allow
5.4.1 Protected Areas—IP55orEnclosurestype12(NEMA
putting the PRS out-of service for maintenance or repair
250).
purposes.
5.4.2 Unprotected Areas, for example, platform(s), control
panel(s)—IP 55 or Enclosures type 4X (NEMA 250).
5. Environmental Conditions
5.5 Ice and Snow—System shall be designed so that opera-
5.1 General:
tion is not impaired in conditions of ice or snow, or both (see
5.1.1 The PRS, including all of its subsystems and
also 8.3.6).
components, shall be designed to withstand the environmental
conditions during storage and operation as described in 5.2 –
5.6 Winds—AllcomponentsandpartsofPRSthatmounton
5.11. the outside of buildings shall be regarded as being affected by
5.1.2 Verification shall be accomplished by the PRS manu-
wind loads in accordance with 8.3.5.
facturer’s analysis or by review of components vendor tests
5.7 Electrical Storms—System parts shall be connected to
and certification documents.
the building lightning protection system.
5.2 Ambient Temperature Range:
5.8 Smoke:
5.2.1 Non-Operating:
5.8.1 System parts that may be exposed to smoke shall be
Low temperature: –35 °C (–31 °F)
designed to operate without failure in smoke conditions.
High temperature: +50 °C (122 °F)
5.8.2 If the machine room is filled with smoke, the PRS
5.2.2 Operating:
shall continue to function without failure for at least 1 h.
Low temperature: –20 °C (–4 °F)
5.9 Sun Radiation/Ultraviolet Light and Water Exposure—
High temperature: +42 °C (108 °F)
All system parts that are non-metallic and exposed to sun
5.3 Electromagnetic Compatibility (EMC):
radiation shall be tested in accordance with A1.10.
5.3.1 Disturbances generated by the control system, control
5.10 Mildew—Thesystemshallbeprotectedagainstmildew
device, electric motor and contact devices shall not exceed the
and other fungi during storage conditions. The manufacturer
levels specified in generic emission standard EN 61000-6-3.
shall design and install the equipment and sub-assemblies,
5.3.2 The power driving PRS equipment and its control
taking into account recommendations of the supplier(s) of
system shall have sufficient immunity to electromagnetic
sub-assemblies, to ensure that mildew effects are eliminated.
disturbances to enable it to operate as intended when exposed
to levels and types of disturbance as specified in EN 61000- 5.11 Rodents and Other Pests—The system shall be pro-
6-2. tected against rodents during storage conditions.
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6. Fire and Smoke Protection 6.4 Analysis Method and Documentation shall be:
6.4.1 Performed using recognized and accepted methods
6.1 General—The PRS shall be designed, constructed and
(for example, computational fluid dynamics).
maintainedtoprotectPRSoccupantsfromfire,heatandsmoke
6.4.2 In a report and include all results, data, scenarios,
emerging from the building during a descending cycle in
methodologies, tests, material certifications, models and as-
accordance with 6.2 – 6.5.
sumptions that support the analysis results.
6.2 Platform Material—Platform(s) material shall meet re-
6.5 Mechanical Failure Verification—All elements that can
quirements specified in 7.6.
fail in the conditions specified in 6.3.2.1, and therefore
6.3 PRS Occupants Tenability Conditions:
endanger the PRS occupant’s life shall be tested (for example,
6.3.1 PRS occupants shall not be exposed to instantaneous
hoist wire-ropes). During this test the elements shall be
or cumulative untenable conditions, as specified in BSI-PD
exposed to the same heat conditions as specified in 6.3.2.1, for
7974-6, Annex G; Tables G-2, G-3.
the relevant period of time, and their correct operation shall be
6.3.2 Themanufacturershallconductanalysistoensurethat
verified.
PRS occupants are kept within tenable conditions during a
descending cycle, in case fire erupts from one window within
7. Material Requirements
the PRS pathway. (See Fig. 3.)
7.1 Materials and Connections—All PRS structural compo-
6.3.2.1 The analysis shall assume:
nents shall be suitable for the application, free from obvious
(1)Fire heat release rate of 5 MW;
2 defects, of required strength and quality, and in compliance
(2)Firesourceisaclosedoffice,10m area(withoneopen
with any additional material requirements specified in this
window as an oxygen source);
2 specification.
(3)Window area is 2.2 m , standard shape;
(4)Natural heat dissipation (zero-wind conditions); and 7.2 Welding Material and Welded Connectionsshallcomply
(5)Maximum temperature in the surrounding of the fire is with requirements of ANSI/AWS D1.1 or ANSI/AWS D14.4,
600°C. as applicable.
FIG. 3Illustration of Platform(s) Passing Through Heated Zone
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7.3 Fastener Materials for PRS Structural Components
Load case 1 In service conditions, PRS with rated load, affected by wind.
Load case 2 Under occasional conditions, for example, static and dynamic
shall conform to Specification A36/A36M specifications or
tests, dynamic force caused by collision of platform(s) or
equivalent. The fastener finish and tolerances shall be suitable
tripping of overload detection device.
for the type of connection in which it is employed. Load case 3 Under extreme conditions, for example, operation of the
secondary device, storm wind, extreme weather conditions or
7.4 Bolted Connections shall be of a secured type, that is,
fire.
eachboltornut,orboth,shallbeeitherself-lockingorsecured
8.2.3 Calculating the Stress in Mechanisms:
by other means to prevent loosening due to vibration.
8.2.3.1 Mechanicalpartsaredesignedbycheckingthatthey
7.5 Mechanical Properties—Base materials for components have a sufficient safety margin (see Tables 1 and 2) compared
shall be structural steel and conform to Specification A36/
to the failure modes arising from breaking, buckling, fatigue
A36M specifications or equivalent. and wear.
8.2.3.2 The calculated stress for mechanism parts must not
7.6 Platform(s) Material:
exceed the allowable stress σ obtained by dividing σ by a
a E
7.6.1 Platform structural components and frame shall be
coefficient depending on the load cases set out in Table 2
noncombustible in accordance with Test Method E136 test.
except as otherwise indicated in the standard.
7.6.2 Platform enclosure material shall:
8.2.4 Check Against Fracture:
7.6.2.1 Not exceed flame spread index 0–25 by NFPA255,
8.2.4.1 Verification of mechanical parts against fracture is
Test Method E84 or UL 723.
carried out by verifying that the calculated stress does not
7.6.2.2 Not exceed smoke development index of 0–450 by
exceed the allowable stress, taking into account the ultimate
NFPA 255, Test Method E84 or UL 723.
tensile strength of the material used.
7.6.2.3 Conform to an average Thermal Protective Perfor-
8.2.4.2 The value of the allowable stress σ is given in the
a
mance rating of 35 by NFPA 1971.
following formula:
8. Structural, Mechanical, and Stability Calculations
σ 5 σ /ν (1)
a R R
8.1 General—Calculations in Section 8 shall take into
where:
account:
σ = allowed stress,
a
8.1.1 The PRS is stored most of the time and is rarely in
σ = ultimate tensile strength, and
R
operation.
ν = factor of safety compared to breaking limit.
R
8.1.2 When in operation, the PRS may be exposed to
extreme environmental conditions.
NOTE 2—See 8.2.2.2 for load cases.
8.2 Specific Design Requirements:
8.3 Design Loads and Forces shall include static and
8.2.1 Safety Margins Allowed Within the Calculation:
dynamic loads, the load of the suspended or supported portion
8.2.1.1 Calculations shall be carried out in accordance with
of the equipment, wind forces and forces due to adverse
goodengineeringpracticesincluding,ifnecessary,theeffectof
conditions as specified in Section 5.
elastic deformations.
8.3.1 Total Suspended Load shall be calculated as the sum
8.2.1.2 Allfailuremodesofthematerialshallbeconsidered,
of:
including fatigue and wear.
8.3.1.1 Platforms weight (dead load);
8.2.1.3 Design calculations shall be carried out in accor-
8.3.1.2 Suspension equipment weight (including cable
dance with the permissible stress deflection method.
weight, lifting accessories and connections); and
8.2.2 Calculating the Stresses in Structures:
8.3.1.3 Platform rated load multiplied by the number of
8.2.2.1 For the three load cases defined in Table 1, calcula-
platforms.
tion of the different members is set out, allowing a safety
8.3.2 Rated Load and Number of Persons in the
marginforthecriticalstresses,takingthefollowingtwofailure
Platform—To prevent overloading of a platform by persons,
modes into account:
the available area of the platform shall be limited by the
(1)Yield strength exceeded.
relationshipbetweenratedloadandmaximumavailableareais
(2)Critical load for buckling exceeded.
given in the following formulas:
8.2.2.2 The ratio between the elastic yield limit σ and the
E
PRL = Platform Rated load [kg] = N*80 [kg]
breaking limit σ shall be less than or equal to 0.7.
N = Number of passengers = A/0.115
R
A = Maximum available platform area, [m ]
Alternatively, if the result is higher than 0.7, special consider-
ations shall be taken regarding safety factors, design analysis 8.3.3 Dynamic Load equal to at least one half of the static
material elongations and ultimate stress. ν =factor of safety
loads shall be considered as the impact load to be included in
E
compared to yield limit. the resultant load of the suspended or supported equipment.
TABLE 1 Elastic Factor of Safety TABLE 2 Parameters for Checking Against Fracture
Load Load Load Load Load Load
Case 1 Case 2 Case 3 Case 1 Case 2 Case 3
Value of ν 1.8 1.5 1.1 Value of ν 4 2.2 1.5
E R
Allowable stress σ σ /1.8 σ /1.5 σ /1.1 Allowable stress σ /4 σ /2.2 σ /1.5
a E E E R R R
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The impact factor value will be determined by the manufac-
Load case 1 1.25 × (PRL + SWP)
+ 1.25 × wind loads in operation
turer with respect to the actual installation. In the event an
+ 1.25 × forces exerted by persons
installation is subjected to a larger dynamic load, the larger
+ 1.25 × forces exerted by ice and
value shall be considered (for example, impact factor for
snow when relevant
Load case 2 1.5 × (PRL + SWP)
different types of secondary device or collisions).
Load case 3 2.5 × (PRL + SWP)
8.3.4 Forces Exerted by Persons:
PRL = Platform rated load (see 8.3.2)
8.3.4.1 Nominal weight of a person: 80 kg.
SWP = Platform dead load
8.3.4.2 Nominal weight of a rescue person, including per-
8.4.1 The load shall be placed in the least favorable posi-
sonal gear: 115 kg.
tion.
8.3.4.3 Minimumvaluefortheforcesexertedbypersonson
8.4.2 SWP shall take into account the mass of wire ropes
the platform wall or guardrails, top edge of a rigid side is
winders if any.
assumed to be 150 N for each of the first 10 persons on the
8.5 Calculation for Steel Wire Rope:
platform and 100 N for each additional person acting in the
horizontal direction. 8.5.1 Factor of Safety—Minimumdesignfactorofsafety, F,
8.3.4.4 Theguardrailortopedgeofarigidsideshallbeable shall be 10 and shall be calculated by the following formula:
toresistwithoutpermanentdeflectionaverticalloadof2000N
F 5 S 3 N/W (2)
located in the most unfavorable position.
where:
8.3.4.5 Platform surrounding walls shall have a mechanical
strengththatwithstandsanormalforceof1000Nappliedfrom N = number of suspension ropes under load,
inside to outside, at any location and being evenly distributed S = manufacturer’scatalogstrengthofonesuspensionrope,
and
over an area of 5 cm in a round or a square section.
W = maximum static load at any point of travel.
8.3.5 Wind Load Calculations:
8.3.5.1 Wind forces shall be calculated in accordance with
8.5.2 Ropeterminationsshallresistnotlessthan80%ofthe
ASMEA120.1Sections3.2.1.2,3.2.4and3.2.5orASCE7-05.
minimum guaranteed breaking load of the rope.
Wind forces shall be used for consideration of stability and
8.6 Suspension Rig, Davits, Trolley and Outriggers:
stresses during operation and storage of the system.
8.6.1 Shall be designed and constructed to withstand the
8.3.5.2 Wind forces shall be applied in the least favorable
direction in each calculation in which wind forces are consid- specified loads in the static and dynamic tests and any impact
loads caused by a failure of the hoist or suspension wire rope,
ered.
8.3.5.3 For Shape factors applied to areas exposed to wind without breaking.
refer to FEM 1.001 or ASCE 7-05, or equivalent.
8.6.2 In addition to having adequate stability against
8.3.6 Snow and Ice Loads—PRS to be installed where
overturning, the suspension rig shall have sufficient lateral
freezing conditions occur shall have the loads from accumu-
strength or be adequately braced against the effect of lateral
latedsnowandicecalculatedduringbothstorageandoperating
sway of the platform(s) parallel to the face of the building.
conditions.
NOTE 3—The forces producing lateral sway may be caused by wind
8.3.7 Earthquakes—In order to minimize safety hazards
forces, movement of the platform(s) or surges caused by the starting and
caused by seismic events (when system is in storage position)
braking of the traversing system.
PRS subassemblies and all devices used for anchoring shall be
8.6.3 Stability factor of the PRS shall be calculated and
designed as follows:
provenbytests,consideringthesuspendedorsupportedunitin
8.3.7.1 Equipment shall withstand a horizontal loading of
its most outboard positions for traversing, operating, and
30% of the weight of the equipment.
storage attainable with positive mechanical or electrical inter-
8.3.7.2 Horizontal loads acting at the equipment center of
locks. The system is regarded stable if the stability moment is
mass shall be calculated independently on each of the X and Y
equal to or greater than the overturning moment in the case of
axes, or on the axis that produces the largest loads on the
stressing obtained by gravity, by an attachment to a structural
anchorage points.
support, or by a combination thereof.
8.3.7.3 Whencalculatingforoverturning,amaximumvalue
8.6.3.1 For horizontal traversing, considering, a 480 Pa
of 90% of the weight of the equipment shall be used to resist
wind load shall be applied to the traversing unit and the
the overturning moment.
stability factor shall not be less than 2, including the effects of
8.4 Platform Structural Strength is to be proven by calcu-
impact.
lation for the load cases (defined in 8.2.2.2, Table 1)as
8.6.3.2 Fortheoperationalmode,withtheratedloadplaced
expressed below:
in its most outboard position and the wind load defined in
8.3.5, the stability factor shall be 4.
European Federation of Materials Handling and Storage Equipment
8.6.3.3 When the equipment is in a stored position, it shall
publications, FEM 1.001 Booklet 2: Rules for the Design of Hoisting Appliances—
be capable of withstanding the highest wind velocities ex-
Classification and Loading on Structures and Mechanisms; Available at http://
www.fem-eur.com/. pected for the specific area and location.
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9. Mechanical and Physical Properties 9.1.9.2 Height shall be 800 to 1200 mm measured from the
upper side of the rail to the surface of the platform floor.
9.1 Platform Construction:
9.1.9.3 Components shall not have sharp edges or angles or
9.1.1 The platform shall have a frame which may be an
protruding parts that may cause injury to persons.
integral part of the platform.
9.1.10 Multi-Platform Assembly:
9.1.2 The platform frame shall be guided on each guide
9.1.10.1 Distance between platforms shall:
member(guiderailssection)byupperandlowerguideshoesor
(1)Correspond to the height of the building evacuation
rollers attached to the frame. In a suspended multi-platform
floors; and
PRS, guide members can be attached to either the upper or
(2)Remain positive during the platforms movement, to
lower parts of the frame. The frame and its guide shoes or
avoid collision.
rollers shall be designed to withstand the forces resulting from
9.1.10.2 Site assembled components be designed to ensure
the loading conditions for which the PRS is designed.
that:
9.1.3 The platform shall be completely surrounded by the
(1)Incorrect assembly is not possible; and
enclosure, floor, and roof; the only permissible openings are in
(2)Once assembled, it is only possible to dismantle the
accordance with 9.2.
connections by intentional intervention.
NOTE 4—Small openings at joint members are allowed.
9.2 Platform Doors—Platformshallincludeatleastasingle
9.1.4 Mechanical strength, see Section 8.
access door for normal conditions operation (Fig. 4), and a
9.1.5 Fire resistance requirements, see Sections 6 and 7.
single trap door for abnormal conditions operation (Fig. 5).
9.1.6 Dimensions of the floor area shall be sufficient for the
9.2.1 Door Mechanism—Access doors shall be constructed
number of persons allowed in the platform as defined in 8.3.2.
to return automatically to the closed and fastened position and
9.1.7 Height of Platform:
shall be locked and fastened during the PRS travel.
9.1.7.1 Interior height of the platform shall be at least 2 m.
9.2.2 Type of Doors Allowed:
9.1.7.2 Clear height of platform entrance(s) for normal
9.2.2.1 Manually or automatically operated;
access of users should all be 1.65 m or higher.
9.2.2.2 Horizontal or vertical or sliding biparting door;
9.1.8 Platform floor shall have a nonskid surface.
9.2.2.3 Swing door.
9.1.9 Guardrails:
9.1.9.1 Shall be fitted to the platform perimeter except for 9.2.3 Doors and their guides, guide shoes, tracks and
the sections where doors are located. hangers shall be:
FIG. 4Illustration of Access Doors
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FIG. 5Illustration of Trap Door
9.2.3.1 Constructed of metal or fire-retardant reinforced 9.2.7.1 Locking of the doors in the closed position shall be
material. donebyalockingdeviceortonguethatengagesbyaminimum
9.2.3.2 Guard the full width and height of the platform length of 7 mm.
entrance opening.
9.2.7.2 Locking elements shall be resistant to shock, and be
9.2.3.3 Designed, constructed and installed so:
made or reinforced with metal.
(1)When the fully closed door is subject
...