elevators-vertical-transportation

# Elevators & Vertical Transportation Quick reference for construction project managers and field supervisors managing elevator and escalator installations on commercial and institutional projects. ## Elevator Type Selection | Type | Speed | Rise | Best Application | |------|-------|------|------------------| | Geared Traction | Up to 350 fpm | Unlimited | Low/mid-rise, moderate traffic | | Gearless Traction | 500+ fpm | Unlimited | High-rise, high-speed, heavy traffic | | MRL (Machine-Room-Less) | Up to 500 fpm | Low/mid-rise | Space savings, no machine room above | | Hydraulic (Conventional) | 150-200 fpm | 60-70 ft | Low-rise, cost-effective | | Hydraulic (Holeless) | 150-200 fpm | 40-50 ft | Low-rise, no ground penetration | | LULA | 30 fpm | Per code | Accessibility, small buildings | ## Standard Elevator Capacities | Capacity | Platform Size (Typical) | Application | |----------|------------------------|-------------| | 2,500 lbs | 6'-8" x 4'-3" | Standard office passenger | | 3,000 lbs | 6'-8" x 4'-5" | Office, retail | | 3,500 lbs | 7'-0" x 5'-0" | Hospital, hotel | | 4,000-4,500 lbs | 8'-4" x 5'-8" | Hospital bed elevator | | 5,000+ lbs | Varies | Freight, service | ## Critical Coordination Points ### Structural Requirements - **Pit depth**: 4'-6" to 8' (traction), 4'-0" to 5'-0" (hydraulic) - **Overhead clearance**: 12'-0" to 16'-0" minimum (varies by speed) - **Hoistway dimensions**: ±½" tolerance on width and depth - **Plumbness**: 1:500 maximum deviation - **Rail bracket loads**: 10,000-25,000 lbs horizontal per bracket ### Electrical Requirements - **Power**: 208V or 480V, 3-phase (verify with manufacturer) - **Dedicated feeder**: Required for each elevator - **Disconnect**: Lockable, within sight of machine - **Machine room lighting**: 100 ft-candles minimum - **Pit and hoistway**: Lighting and GFCI receptacle required ### Fire Protection Interface - **Smoke detectors**: Lobby, machine room, hoistway (top) - **Phase I recall**: Automatic on smoke detection - **Shunt trip**: Required if hoistway sprinklered - **Fire alarm integration**: Addressable or relay interface ## Pre-Installation Checklist | Item | Verify | Responsible | |------|--------|-------------| | Pit complete and waterproofed | Dimensions, drain, ladder, light | GC/Structural | | Hoistway enclosed and fire-rated | Dimensions, plumb, brackets set | GC/Structural | | Machine room ready | Dimensions, ventilation, power | GC/Electrical | | Power available | Voltage, phase, amperage | Electrical | | Fire alarm interface ready | Smoke detectors, recall circuits | Fire Alarm | | Hoistway openings framed | Headers, dimensions, fire rating | GC | ## Installation Sequence 1. **Pre-installation inspection** - Verify pit, hoistway, machine room complete 2. **Rail installation** - Brackets, templates, rails, alignment 3. **Machine installation** - Setting, connections, alignment 4. **Car installation** - Platform, frame, guide shoes 5. **Hoistway doors** - Frames, doors, hardware 6. **Wiring and controls** - Traveling cable, controller commissioning 7. **Cab finishes** - Interior panels, flooring, fixtures 8. **Adjustments and testing** - Fine-tuning, safety tests 9. **Inspection and acceptance** - AHJ inspection, certificate ## Key Code Requirements | Requirement | Code Reference | Notes | |-------------|----------------|-------| | Elevator safety | ASME A17.1 | Safety Code for Elevators | | Inspection procedures | ASME A17.2 | Guide for Inspection | | Existing elevators | ASME A17.3 | Retroactive requirements | | Platform lifts | ASME A18.1 | Stairway lifts, VPLs | | Building code | IBC Chapter 30 | Number required, accessibility | | Hoistway enclosure | IBC Chapter 7 | Fire rating, openings | | Accessibility | ADA / ICC A117.1 | Size, controls, signals | ## Fire Service Operation ### Phase I (Automatic Recall) - Activated by lobby or machine room smoke detector - Elevators return to designated floor - Doors open and remain open - Visual signal indicates recall active ### Phase II (Manual Firefighter Operation) - Activated by key switch in car - Constant pressure door control - Independent car operation - Fire service key required (FEO-K1) ## ADA Accessibility Requirements | Element | Requirement | |---------|-------------| | Door width | 36" minimum clear opening | | Platform size | 80" x 54" minimum (2,000 lb car) | | Control height | 54" max (side reach), 48" max (front reach) | | Buttons | ¾" minimum, raised, Braille | | Floor designations | 2" raised characters, 60" height | | Hall lanterns | 2½" minimum, visible from call button | | Door timing | Based on 1.5 ft/sec travel speed | ## Testing Requirements | Test Type | Frequency | Scope | |-----------|-----------|-------| | Category 1 | Annual | Visual, functional, fire service | | Category 5 | 5 years | Full load, safety test, buffer test | | Acceptance | Initial | All systems, AHJ witnessed | | Fire service | Annual | Phase I and II operation | ## Common Elevator Issues | Issue | Cause | Resolution | |-------|-------|------------| | Pit water | Waterproofing failure | Repair waterproofing, verify sump pump | | Rail misalignment | Structural movement | Resurvey, realign rails | | Door problems | Interlock, operator, sill | Clean sills, adjust operator | | Leveling issues | Controller, encoders | Adjust leveling circuits | | Fire recall fails | Smoke detector, wiring | Verify detector zones, test circuits | | Noise/vibration | Isolation, alignment | Check mounts, realign | ## Turnover Requirements - [ ] Final inspection complete (AHJ) - [ ] Certificate of operation posted - [ ] All keys provided (fire service, access, independent) - [ ] O&M manuals delivered - [ ] As-built drawings delivered - [ ] Building staff training complete - [ ] Warranty documentation - [ ] Maintenance contract executed - [ ] Emergency procedures established - [ ] Monitoring service active ## Long-Lead Items | Item | Lead Time | |------|-----------| | Elevator equipment | 12-20 weeks | | Custom cab finishes | 8-12 weeks | | Specialty fixtures | 6-10 weeks | | Glass entrances | 6-8 weeks | ## Reference Files ### Elevator Types - [Traction Elevators](references/traction-elevators.md) - Geared, gearless, MRL systems - [Hydraulic Elevators](references/hydraulic-elevators.md) - Conventional, holeless, roped - [Specialty Elevators](references/specialty-elevators.md) - Destination dispatch, freight, LULA, dumbwaiters ### Components & Construction - [Elevator Components](references/elevator-components.md) - Machines, controllers, safeties - [Hoistway Construction](references/hoistway-construction.md) - Enclosure, rails, venting - [Pit & Machine Room](references/pit-machine-room.md) - Requirements, layout, access - [Doors & Entrances](references/doors-entrances.md) - Types, operation, finishes - [Cab Finishes & Fixtures](references/cab-finishes-fixtures.md) - Interiors, controls, signals ### Performance & Safety - [Elevator Performance](references/elevator-performance.md) - Speed, capacity, ride quality - [Fire Service & Emergency](references/fire-service-emergency.md) - Phase I/II, shunt trip - [Accessibility - ADA](references/accessibility-ada.md) - Compliance requirements - [Safety Hazards](references/safety-hazards.md) - Construction, operational hazards ### Coordination & Compliance - [Coordination & Installation](references/coordination-installation.md) - Structural, electrical, MEP - [Code Compliance](references/code-compliance.md) - A17.1, IBC, inspection process - [Testing & Inspection](references/testing-inspection.md) - Acceptance, periodic testing - [Maintenance & Turnover](references/maintenance-turnover.md) - Contracts, training, closeout ### Additional Systems - [Escalators & Moving Walks](references/escalators-moving-walks.md) - Types, installation, safety - [Specifications - CSI](references/specifications-csi.md) - Division 14, bidding ## Related Skills - **structural-trades** - Pit, hoistway, and machine room construction - **electrical-systems** - Power, disconnect, lighting coordination - **fire-protection-systems** - Sprinklers, shunt trip, fire alarm interface - **construction-safety-management** - Fall protection, LOTO procedures - **vdc-bim-coordination** - Elevator coordination, clash detection - **procore-project-management** - RFI, submittal, daily log workflows - **schedule-management-cpm** - Elevator installation sequencing - **quality-control-closeout** - Acceptance testing, commissioning - **building-envelope-exterior** - Hoistway venting coordination