# Performance Specification Gap in Division 14 Conveying Equipment submittals

> Source: https://deviationcheck.com/divisions/14-conveying-equipment/performance-specification-gap/

A measurable performance property in the submittal (rating, capacity, tolerance, efficiency) does not meet what the spec requires.

## What to look for in Division 14 Conveying Equipment

Key performance parameters in Div 14 submittals:
- **Capacity** (lbs) - passenger, service, freight, stretcher-service rated loads
- **Speed** (fpm) - travel speed affects wait times, motor sizing, and shaft overhead requirements
- **Number of stops/openings** - front and rear openings at each landing
- **Car interior dimensions** (width x depth x height) - must meet ADA minimums and project requirements
- **Door opening width** - 36" minimum for ADA, 42" or 48" for stretcher service
- **Door type** - single-slide, center-opening, two-speed (affects opening time and width)
- **Motor horsepower** (HP) - must match capacity and speed requirements
- **Machine type** - geared traction, gearless traction, hydraulic (above-ground or in-ground cylinder)
- **Controller type** - AC variable frequency drive, hydraulic valve (affects ride quality, energy use)
- **Travel distance** - total rise from lowest to highest landing
- **Escalator step width** - 24", 32", or 40" nominal (affects passenger throughput)
- **Escalator rise height** - floor-to-floor vertical distance
- **Escalator speed** - 100 fpm standard, 90 fpm for certain applications
- **Elevator door opening/closing time** - code minimums per ASME A17.1
- **Leveling accuracy** - +/- 1/4" for passenger elevators per code
- **Standby power operation** - automatic transfer to generator, lowering capability

## Severity

Default grade: Blocker. Always a Blocker when the gap touches life-safety or structural performance.