ITG FY13-01 Elevator Design; Superseded By UFC 3-490-06

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RSESUPEEDD

RSESUPEEDD

Interim Technical GuidanceITG 2013-01SUPERSEDEDNAVFACELEVATORDESIGNGUIDE01 August 2013Enclosure (1)

CONTENTSPageCHAPTER 1 INTRODUCTION1-11-21-31-4Purpose .Scope .References .Content and Format .2223CHAPTER 2 PROJECT DEVELOPMENTCriteria Documents .Client Survey and Traffic Study.Building Supporting Systems .Contract Development and Support .Application of Elevator Types to Facility Design .ED2-12-22-32-42-5CHAPTER 3 ARCHITECTURALElevator Machine Room . 10Elevator Hoistway . 11Elevator Hoistway Pit . 12D3-13-23-3CHAPTER 4 STRUCTURALElevator Machine Room . 14Elevator Hoistway . 14Elevator Hoistway Pit . 14RSE4-14-24-344677CHAPTER 5 MECHANICAL5-15-25-3Elevator Machine Room . 15Elevator Hoistway . 15Elevator Hoistway Pit . 16CHAPTER 6 ELECTRICALElevator Machine Room . 17Elevator Hoistway . 20Elevator Hoistway Pit . 20SUPE6-16-26-3CHAPTER 7 FIRE PROTECTION7-17-2Fire Alarm System . 22Fire Protection System . 22CHAPTER 8 ELEVATOR SYSTEMS and COMPONENTS8-18-28-38-48-58-68-7Elevator Machine Room .Elevator Hoistway .Elevator Cab and Landing Fixtures .Elevator Car and Counterweight Components .Hydraulic Elevator Components and Systems .Elevator Performance Testing and Commissioning .Elevator Supporting Documentation .24272830303434APPENDIX A DESIGN REFERENCE DOCUMENTS . 36APPENDIX B NAVFAC VTE PROGRAM CONTACTS . 371

CHAPTER 1INTRODUCTION1-1 Purpose.EDElevator installations are complex, multi-disciplined systems that interface with manyaspects of the facility design. Design considerations require coordination with architectural,structural, mechanical, electrical, and fire protection disciplines. This document providesdirection for the development of project request for proposal (RFP), design, and specificationdocuments related to the procurement and modernization of elevator systems for Navy andMarine Corps Facilities, herein referred to collectively as Navy Facilities.RSEDASME A17.1, Safety Code for Elevators and Escalators, International Building Code, andother non-governmental safety standards identify minimum design requirements for elevatorsand for building systems that interface with the elevator controls. The performance languageused in the codes and standards results in many different, and often conflicting,interpretations by the hundreds of federal, state, and municipality “Authorities HavingJurisdiction” (AHJ) across the country and around the world.SUPENAVFAC is the AHJ for Elevators in Navy Facilities. The NAVFAC Elevator SubjectMatter Expert (SME) manages the NAVFAC Vertical Transportation Equipment (VTE)Program and provides policy, interpretation and direction for the application of NAVFACVTE design criteria and safety codes and standards to elevators and other types of VTE inNavy facilities. For each NAVFAC Facilities Engineering Command (FEC), administrationand application of VTE policy and direction shall be the responsibility of the FEC VTE LeadCertifying Official, by direction of the NAVFAC VTE Program Manager.NAVFAC Elevator Design Criteria identifies consistent and uniform methods to be used tocomply with the performance language of the applicable building and safety codes. Inaddition, NAVFAC Elevator Design Criteria specifies quality and performance requirements,for specific elevator components and systems, to ensure sustainability, effective performance,optimum life-cycle costs, and energy efficiency.1-2 Scope.The requirements of this Interim Technical Guidance (ITG) apply to both new constructionprojects and to the modernization of elevators in existing Navy facilities. This ITG must beutilized for the development of all design and contract documentation, including Request forProposal (RFP), design submissions, and contractor submittal documents.1-3 References.References are provided in Appendix A. The listing is not exclusive; the elevator design andinstallation must comply with this ITG and all applicable reference documents and buildingand safety codes. The elevator and facility design must comply with the edition in effect atthe time of contract award.2

1-4 Content and Format.SUPERSEDEDThis document is arranged by design disciplines. Within each chapter, the content isarranged by major elevator systems and components.3

CHAPTER 2PROJECT DEVELOPMENT2-1 Criteria Documents.EDThe project development process shall determine the need for elevators through compliancewith the most stringent requirements of the following criteria:a. The new DoD "ABA (Architectural Barriers Act) Accessibility Standard"(DoD ABAAS) and the DEPSECDEF Memorandumb. NAVFAC Facility Design Criteria for the facility type under designc. NAVFAC Facility Design Program requirements for each specific project2-2 Client Survey and Traffic Study.RSEDTo determine the elevator types, service, and quantity necessary for effective elevatorservice, the design process must include a client survey and a traffic study of the proposedfacility design. The two basic elevator types are hydraulic elevators and electric tractionelevators. The two categories of service that are recognized by ASME A17.1 are Passengerand Freight.SUPE2-2.1 Client Survey and Traffic Study FactorsThe client survey and traffic study are also conducted to determine requirements forelevator capacities, speeds, and elevator cab interior dimensions. For unique facilitiesand for facilities with critical demand requirements, the traffic study must be performedby a qualified elevator consultant. The following factors must be utilized in the analysis:(1) Type and Use of Building(2) Size and Height of Building(3) Building Population(4) Exterior Traffic Considerations(5) Anticipated Traffic Flow(6) National Elevator Industry, Inc. “Vertical Transportation Standards”(7) LEED Certification Design Considerations2-2.2 Passenger or Freight ClassificationThe designer and client must decide whether a passenger elevator or freight elevator ismost appropriate for each elevator in the facility. This decision must be based onanticipated usage of each elevator.2-2.2.1 If the elevator will be used for the movement of personnel, it must be designedas a passenger elevator. Any elevator that is a component of a handicapped accessibilityroute must be designed as a passenger elevator. Passenger elevators may be used forgeneral freight loading and can be designed with a heavy-duty interior to resist damagefrom hand trucks and material.2-2.2.2 If the elevator will be used strictly for the movement of materials, it may beclassified and designed as a freight elevator. ASME A17.1 allows a freight elevator tohave a greater platform area than a passenger elevator, given the same load rating.4

Because of this, if an elevator is designed and installed as a freight elevator, that decisioncannot be reversed at a later date and the elevator may never be utilized as a passengerelevator. The classification and design as a freight elevator severely limits the flexibilityof use that is provided by the passenger elevator classification.2-2.3 Handicapped AccessibilityIf an elevator is a required component of a DoD ABAAS accessibility route, the elevatormust be a passenger elevator and must be designed to comply with the requirements ofDoD ABAAS.DED2-2.4 Emergency Medical Services AccessibilityFor all buildings, a minimum of one passenger elevator must be designed toaccommodate emergency medical services access to all floors of the building. Theelevator shall be of such a size and arrangement to accommodate a 24-inch by 84-inch(610mm by 1930mm) ambulance stretcher in the horizontal, open position and shall beidentified by the international symbol for emergency medical services (star of life). If thefacility is equipped with emergency power, this elevator must be powered by theemergency power system.RSE2-2.5 Elevator Operational FeaturesThe client survey must include choices for elevator operational features, including:a. Emergency Commandeering Serviceb. Security and Access Control SystemsSUPE2-2.6 LEED Certification Design Optionsa. High-Efficiency Permanent Magnet Gearless MachineA high-efficiency gearless machine has been developed and incorporated into elevatordesign in the elevator industry. This elevator drive is similar to traditional gearlesstraction machines and can be located in the elevator machine room. However, the highefficiency gearless machine utilizes an electric motor design that uses permanent magnetsto increase the energy efficiency of the drive machine. This type of elevator drive systemshould be considered for all facilities. For Navy Facilities, the machine must be locatedin the elevator machine room.b. “Regenerative Drive” Motor Control“Regenerative Drive” motor control systems have been developed for electric tractionelevators and are incorporated into elevator design within the elevator industry. Thismotor control system uses the energy that is developed when the elevator is running in anoverhauling load condition. The drive converts the mechanical energy into electricalenergy and feeds the electrical energy back to the facility power grid. This motor drivesystem is required, by this NAVFAC Elevator Design Guide, to be utilized for allgearless traction elevators. This motor drive system should be considered for all facilitieswith electric traction elevators.5

2-3 Building Supporting Systems.There are multiple building systems that interface with the elevator design and controlsystem. The interface design is determined by the requirements of the International BuildingCode and numerous safety codes and standards. For new construction projects, buildingsupporting systems must be designed to comply with applicable requirements. Formodernization projects, the designer must verify and ensure that existing building systemsare compliant with current safety code requirements and are compatible with proposedelevator systems.DED2-3.1 Building Fire Alarm PanelAll elevators must be equipped with Firefighters’ Emergency Operation (FEO). TheFEO system provides an automatic elevator operational response to fire detection devicesin the elevator machine room (MR), elevator lobbies, and in the elevator hoistway whenrequired by safety code and/or NAVFAC Design Criteria. Design of the fire protectionsystem is identified in UFC 3-600-01.RSE2-3.2 Emergency PowerFor all buildings equipped with an emergency power generator, the emergency powersystem must provide the capability for the normal operation of at least one elevator onemergency power. In addition, the emergency power system must provide simultaneousor sequential movement of all elevators to the FEO Designated Level or Alternate Level.For new construction or modernization projects, the Designer of Record must determineif the client requires additional elevator operation under emergency power.SUPE2-3.2.1 The design of elevator emergency power operation must address the following:(1) How many and which elevators will run simultaneously.(2) Location of elevator MRs and possible control wiring interconnections forsequential elevator return operation.(3) Design of the electrical control circuit from the Automatic Transfer Switch (ATS)to the elevator controller.(4) Ensure all elevator mainline disconnects are fed from the emergency power buss.2-3.2.2 Electric Traction Elevators that are not designed for emergency power operationmust be designed and equipped with an auxiliary power operating system that will, at aminimum, run the elevator to the next available landing, open and close the doors, andshut the elevator off at that landing.2-3.2.3 Hydraulic Elevators that are not designed for emergency power operation mustbe designed and equipped with an auxiliary power operating system that will, at aminimum, run the elevator to the lowest landing, open and close the doors, and shut theelevator off at that landing. If the lowest landing is not the FEO Designated Landing, theelevator must stop at the appropriate Fire Response Floor, open the cab doors for aminimum of 30 seconds, prior to proceeding to the lowest landing. The auxiliary powersupply must be of adequate supply to open and close the elevator cab doors as often asnecessary to complete this operation.6

2-3.3 Building Telephone and Communication SystemsEmergency communication is required from the elevator cab to an emergency responsedesk that is manned 24 hours a day. The emergency response communication systemmust be answered by emergency personnel and not by an automated answering system.In addition, the elevator cab communication system must automatically identify theelevator location and provide the capability for voice communication between theelevator MR and the elevator cab.ED2-4 Contract Development and Support.D2-4.1 Unified Facilities Guide SpecificationsFor all contracts, utilize the complete and most current version of the Unified FacilitiesGuide Specifications (UFGS) for elevators to specify the project elevators. Any editingof non-bracketed paragraphs within the specification must be specifically approved bythe responsible NAVFAC Elevator Program FEC LCO.RSE2-4.2 Design Coordination and SupportCoordinate project RFP elevator requirements with the NAVFAC FEC VTE LCO. Inaddition, VTE design submittals must be reviewed and approved by the NAVFAC FECVTE LCO. Contact information for the NAVFAC VTE Program Managers and FECVTE LCOs is provided in Appendix B.SUPE2-4.3 NAVFAC VTE Program Design Comments or QuestionsFor elevator design questions and comments, contact the NAVFAC Elevator ProgramManager, Deputy Program Manager, or the NAVFAC FEC Lead Certifying Official foryour geographic area.2-5 Application of Elevator Types to Facility Design.This section identifies and describes the types of elevators that may be installed in NavyFacilities and provides requirements for the application of each type to the size and functionof the facility. This section also identifies speed and travel requirements for each type andapplication.2-5.1 Hydraulic ElevatorsHydraulic elevators may be used for facilities of 2 to 4 stories. Direct plunger hydraulicelevator design must be used for hydraulic elevators in Navy Facilities. Roped hydraulicelevators must not be used. Telescopic plungers and inverted cylinder/plungerassemblies must not be installed in Navy Facilities.2-5.1.1 There are three main types of hydraulic elevators:(a) In-ground Direct Plunger: An elevator cylinder and plunger assembly is installedin the ground, below the elevator cab. The elevator cab frame is connected to the topof the plunger and moves up as hydraulic fluid is pumped into the cylinder from thehydraulic elevator pump-unit reservoir. For a travel distance of 15 feet (258 cm) or7

less, the rated speed shall be 125 fpm (38.1 m/min). For a travel distance between 15feet (4.6 m) and 44 feet (13.4 m), the rated speed shall be 150 fpm (45.7 m/min). Donot exceed a maximum travel length of 44 feet (13.4 m) or a maximum of four floorsfor this type of elevator.ED(b) Hole-less Direct Plunger: Either one or two hydraulic cylinder/plunger assembliesare installed vertically, in the elevator hoistway, with the bottom of the cylindersupported by the hoistway pit floor. The cab frame is attached to the top of theplunger and moves up as hydraulic fluid is pumped into the cylinder from a reservoir.The rated speed shall be 125 feet per minute (38.1 m/min) for this type of elevator.Travel is limited by pit depth and hoistway overhead.(c) Roped: Roped Hydraulic elevators are not direct-plunder type elevators. RopedHydraulic types shall not be used for Navy Facilities.RSEDEXCEPTION: In the event of compelling design conditions, the use of a ropedhydraulic elevator may be appropriate for a new construction or modernization project.Approval for use of a roped-hydraulic elevator design may be requested, on an individualproject, by submission of a written Request for Approval to the NAVFAC VTE ProgramFEC Lead Certifying Official (LCO). For an individual project design, the LCO isauthorized to grant an exception to this restriction.SUPEThe roped design is similar to the standard hole-less elevator design. The difference isthat a wire rope sheave is mounted to the top of the hydraulic plunger and steel hoistropes are attached to the cylinder base, run over the sheave, and down to the cab frame.As the cylinder runs up, the 1:2 roping moves the elevator cab twice the distance of theplunger travel. Car speed is 150 feet per minute (45.7 m/min) and maximum travellength is 48 feet (14.6 m). The cost of acquisition, maintenance, and service for a ropedhydraulic elevator is substantially greater than for the direct plunger types.2-5.2 Electric Traction ElevatorsElectric Traction Elevators may be used for all facilities. There are two types of electrictraction hoist machines, geared and gearless. In addition, there is a smaller, moreefficient gearless elevator machine design that is relatively new to the elevator industry.The building height and travel of the elevator will determine the most effectiveapplication of each type of electric traction elevator.2-5.2.1 The basic design is similar for each of the types of elevator drive machines.Steel hoist ropes (wire ropes) are suspended in the elevator hoistway a

ASME A17.1, Safety Code for Elevators and Escalators, International Building Code, and other non-governmental safety standards identify minimum design requirements for elevators and for building systems that interface with the elevator controls. The performance language

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