DESIGN AND CONSTRUCTION STANDARDS DIVISION 14
FACILITIES MANAGEMENT SERVICES CONVEYANCES
DIVISION 14
CONVEYANCES
Division 14 of the Carnegie Mellon University Design and Construction Standards Manual addresses the following requirements for conveyances on University projects.
14240 HYDRAULIC ELEVATORS
December 1998 P. 14-9
DESIGN AND CONSTRUCTION STANDARDS DIVISION 14
FACILITIES MANAGEMENT SERVICES CONVEYANCES
14240 HYDRAULIC ELEVATORS
Hydraulic elevators installed in campus buildings shall comply with the following code requirements:
• Commonwealth of Pennsylvania Department of Labor and Industry Elevator Code
• ASME/ANSI A 17.1: Safety Code for Elevators and Escalators
• The Americans with Disabilities Act guidelines
For additional requirements contact the University libraries.
In addition, the University requires the following:
• State-of-the-art equipment of the highest quality.
• Hydraulic elevator speed determined on an application basis.
• Elevators that service all floors.
• Elevator access to mechanical rooms by key control only
• Special locked elevator cab egress doors and hoistway doors to discourage unauthorized access into elevator hoistways.
• Review of need for freight elevators in new buildings with the University Project Manager
Approved Manufacturers
Hydraulic elevators shall be provided by one of the following manufacturers:
• Dover Elevator Corporation
• Otis Elevator Company
• Schendler Elevator Corporation
• Marshall Elevator
Components
The Elevator Contractor shall provide the manufacturer’s standard pre-engineered elevator system with the associated components required for a complete system.
Hydraulic Plunger-Cylinder Units
Hydraulic machines with electric pump-tank-control system equipment in the machine room shall be single-acting, hydraulic, plunger-cylinder units for installation under the elevator car.
Pump units shall have positive displacement with a maximum of 10% variation between no-load and full-load. A fan-cooled squirrel cage induction motor with wye-delta starting shall be provided.
Hydraulic Piping
Hydraulic piping shall be of the size, type, and weight recommended by the manufacturer and shall have isolation couplings to prevent sound/vibration transmission from the power unit.
Anchoring Devices
The selection of concrete and masonry inserts and similar anchoring devices for installing guide rails, machinery, and other components of elevator work shall be coordinated with the Elevator Contractor. The installation of inserts and similar devices shall be in accordance with the manufacturer’s instructions.
Protective Casings
Protective casings shall be 2 in. (50 mm) larger than cylinders made from Schedule 80 PVC pipe that complies with ASTM D 1785. The bottoms of the casings shall be sealed with end caps that comply with ASTM D 2467, and they shall be attached using solvent cement that complies with ASTM D 2564.
Filler
Corrosion protective filler of a solvent, petroleum-based compound shall be used that is specifically formulated for filling the space between hydraulic cylinders and casings. The filler shall be heavier than water, electrically nonconductive, and shall have a pliable washable consistency that becomes fluid when heated to 150 ºF. Acceptable filler products include, but are not limited to:
• Diversified Enterprises, No-Ox-Id R-R 6110A
• Pacific Standard Chemical Co., Union-Guard 160
PVC Components
PVC material shall comply with the following:
PVC Pipe: ASTM D 1785
PVC Fittings: ASTM D 2466
Solvent Cement: ASTM D 2564
Car Frames and Platforms
Car frames and platforms shall be welded steel units. For freight elevators, special heavy-duty units for power truck loading shall be specified that are designed to withstand the required impacts and wheel loadings.
Passenger Car Enclosures
General Requirements
The platform dimension of the manufacturer’s standard car enclosures shall be not less than 7 ft by 5 ft 6 in.
The specification shall address ventilation, lighting, access doors, doors, power door operators, sills (thresholds), trim, accessories, as well as floor, wall, and ceiling finishes.
Manufacturer’s standard flush-panel horizontal sliding doors shall be not less than 3 ft-6 in. wide.
Protective edge trim system for door and wall panels shall be the manufacturer’s standard.
Materials and Fabrication
Cabs shall be satin stainless steel in accordance with AISI A 167, type 302 or 304 with No. 4 satin finish.
Aluminum sills shall be extruded aluminum with grooved surface, 0.25-in. thickness, mill finish.
Cars shall be fabricated with recesses and cutouts for signal equipment.
Luminous ceilings shall be fluorescent light fixtures and ceiling panes of translucent acrylic or other permanent rigid plastic that complies with flammability requirements. Fluorescent light fixtures shall comply with ADA requirements for foot-candle levels.
Handrails shall be stainless steel and installed on sidewalls and the back wall.
Flooring shall be selected and specified as required and included in the elevator package.
Freight Car Enclosures
General Requirements
The platform dimension of a manufacturer’s standard car enclosure for Class A Freight Loading shall be not less than 7-ft wide by 7-ft 6-in. deep.
Vertical biparting sliding doors shall be not less than 5-ft wide and 6-ft 8-in. high.
The specification shall include ventilation, lighting, finishes, access doors, thresholds, trim, and accessories. Power door operators with linkages for hoistway door operation shall also be specified.
Materials and Fabrication
Construction shall be manufacturer’s standard welded steel construction with factory finish or synthetic enamel.
Stainless steel panels shall be in accordance with AISI A 167, type 302 or 304, with No. 4 satin finish.
Car door sills shall be steel angle.
Cars shall be fabricated with recesses and cutouts for signal equipment.
Car walls and ceiling shall be 0.0747-in. minimum thickness, reinforced at 16 in. maximum spacing.
Lighting shall be fluorescent fixtures with white reflectors.
Floors shall be fabricated in rolled stainless steel floor plate in accordance with ASTM A 793.
Door panels shall be flush steel sheet with formed edges and vertical reinforcing back rails spaced 12 in. on center. Lower panels shall be a minimum thickness of 0.1046 in. (12 gage).
Passenger Hoistway Entrances
General Requirements
The Contractor shall specify the manufacturer’s standard hollow-metal, sliding door, and frame hoistway entrance complete with track system, hardware, sills, and accessories. Car doors shall be matched for size, number of panels, and door movement.
Frame size and profile shall coordinate with hoistway wall construction. Where gypsum board wall construction is used, the frames shall be fabricated with reinforced head sections.
Materials and Fabrication
Enameled formed steel frames shall have the manufacturer’s standard synthetic-enamel finish.
Stainless steel panels shall be in accordance with AISI A 167, types 302 or 304 with No. 4 satin finish.
Extruded aluminum sills, with grooved surface, shall be 0.25-in. thickness, mill finish.
Doors sills shall be grouted with factory-packaged, non-staining, non-corrosive, non-gaseous grout that complies with ASTM C 1107.
Freight Hoistway Entrances
General Requirements
Steel frames and sills for freight hoistway entrances are required. The hoistway entrance doors shall be the manufacturer’s standard pre-engineered, counterbalanced, vertical biparting doors with truckable sill bars and resilient safety meeting-rail gaskets. Power operation of equipment doors shall be provided by coordinated linkage with power-operated car doors.
Where gypsum board wall construction is required, fire-resistance-rated, hollow metal door and frame hoistway shall be provided.
Materials and Fabrication
Steel plate door panels shall be stainless steel AISI A 167, type 302 or 304, with No. 4 satin finish.
Door panels shall be sound deadened by either insulation or bituminous compounds.
Controls
General Requirements
The manufacturer’s standard microprocessor operation system shall be specified for each elevator or group of elevators of the type of operation required.
Single-passenger elevators shall have “Selective-Collective Automatic Operation” as defined by ASME A17.1.
Single-freight elevators shall have “Single Automatic Operation” as defined by ASME A 17.1.
Passenger elevators shall have the following additional operational features:
• Standby power operation
• Battery-powered lowering
Security Features
Cars shall have a keyswitch operation feature that allows all push buttons to be activated and deactivated by security keyswitches.
The key shall be removable only in the deactivated position.
Security features shall not affect emergency firefighters’ service.
Keyswitches shall match the building lock cylinders, including cores and keys. (Refer to Division 8, Doors and Windows.)
In addition to the normal controls, the car panel shall contain a key-operated switch marked “Service” that shall render the elevator operative from car to car top only, and shall cause the “Out-of-Service” lights at each landing to be illuminated. When the car comes to rest in position, the doors shall stand open at the landing and remain open until the car button for the next stop is pushed.
Each elevator shall be controlled by the fire alarm system as required by the Pennsylvania Department of Labor and Industry Title 34, Section 7.33, “Operation of Elevators under Fire or Other Emergency Conditions.”
Signals
Car Controls
Each car shall contain a fully-recessed car control station with applied metal faceplates. A call button for each landing served and other buttons, switches, and controls required for specified car operation shall be provided. Operating device symbols shall be provided as required by the code. Other buttons and switches shall be marked with the manufacturer’s standard identification for the required use of function. The controls shall be mounted in the return panel adjacent to the car door at a height that complies with ADA guidelines.
Car-call buttons shall illuminate when activated and remain lit until the call has been fulfilled. Call-buttons shall be fabricated of acrylic or other permanent translucent plastic. Except for buttons and illuminated elements, car fixture signal equipment with exposed surfaces shall be fabricated of satin stainless steel.
The Pamtech No. R2A-E emergency communication system shall be installed and wired into the elevator controller so that the system automatically dials the programmed telephone number of the monitoring service and identifies the elevator location. The system, which shall have a battery back-up power supply, shall be contained in a flush-mounted cabinet and shall comply with ADA guidelines.
Switches shall be provided on top of emergency exits. The switches will cause an alarm to sound when the cover is opened.
Passenger elevator cars shall have a car-location display (illuminated-signal, digital-display, or a segmented type) above the car door or above the car control station. Also, an audible signal shall be provided to indicate to passengers that the car is either stopping at, or passing, each of the floors served. Travel direction arrows shall be included if they are not provided in the car control station.
Hall Controls
One hall push-button station shall be located at each landing for each elevator or group of elevators, but not less than one station for each four elevators in a group. For each group of passenger elevators, a hall push-button station shall be located between two elevators at the center of a group or in a location most convenient for approaching passengers. Recessed wall-mounted flat faceplate units are required as follows:
• Two-button stations at intermediate landings
• One-button stations with direction indication at terminal landings
Hall-call buttons shall illuminate when activated and remain lit until the call has been fulfilled. Call-buttons shall be fabricated of acrylic or other permanent translucent plastic. Except for buttons and illuminated elements, hall-fixture signal equipment with exposed surfaces shall be fabricated of satin stainless steel, recessed type with exposed-metal surfaces.
Hall Lantern Units
Hall lantern units with illuminated arrows shall be placed on intermediate landings and single-arrow units at terminal landings. Materials, finishes, and mounting methods of hall push-button stations shall be matched.
Hall lanterns shall project from faceplates for ease of angular viewing.
Lanterns shall be placed either above or beside each hoistway entrance and mounted at a minimum of 72 in. above the finished floor.
Audible signals shall indicate car arrival and the direction of travel for each lantern. Signals shall sound once for up and twice for down.
Hall position indicators shall be either the illuminated-signal type or digital-display type and shall be located above each hoistway entrance at the ground floor. Materials, finishes, and mounting method of hall push-button stations shall be matched. Ground-floor hall lanterns shall be integrated with hall position indicators.
Safety Devices
Each elevator car shall have a safety device with a uniform array of 36 or more microprocessor-controlled infrared light beams projecting across the car entrance. Interruption of one or more of the light beams shall cause the doors to stop and reopen.
Retractable edge shoes shall be used on elevator entrance doors that cause the doors to stop and reopen upon contact with an obstruction.
An electronic photo-eye device shall be provided with timed cutout. The device shall project dual-light beams across the car entrance at 5 in. and 29 in. above the floor. When the beams are interrupted, the device will cause the doors to stop and reopen.
A nudging feature shall be provided to perform the following: After the car doors are prevented from closing by the activation of one of the safety devices, for a predetermined adjustable time period, a loud buzzer shall sound and the doors shall begin to close at a reduced speed.
Lighting
The elevator car lighting shall be connected to a normal and an emergency circuit.
Elevator pits shall contain a vapor-proof fluorescent PL light.
Machine Room
The machine room shall be adequately ventilated.
No water pipes shall be permitted to pass through the machine room.
One ground fault interruption (GFI) receptacle and one floor drain or sump pump shall be installed in the elevator pit.
Hydraulic Sound and Vibration
Sound insulation panels shall be used on the power unit frame.
A minimum of two sound-isolating couplings shall be installed in the oil line between the pump and jack.
An oil-hydraulic silencer shall be installed at the power unit.
Vibration pads shall be installed under the power unit.
Warranty
The standard elevator warranty shall be a written warranty signed by the manufacturer agreeing to repair, restore, or replace defective materials and workmanship of the elevator work within 12 months from the date of Substantial Completion.
Coincidental product warranties for major components of the elevator work are also required and shall be submitted with the maintenance manuals.
Maintenance Service
Beginning at Substantial Completion of the elevator, the installer shall provide 12 months of full maintenance service by skilled, competent employees. This service shall include monthly preventative maintenance, repair or replacement of worn or defective components, and lubrication and adjusting as required for proper elevator operation at rated speed and capacity. Any required replacement parts and supplies shall be new and shall be the same as those used in the manufacture and installation of the original equipment.