Vertical Transportation Capacity vs Core Area
Apply destination-control and traffic-pattern analysis before adding elevator shafts to recover rentable area while meeting transportation performance targets.
CyberTRIZ analysis · RealEstateConstruction contradiction DSP018 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Business Context
High-rise and high-occupancy buildings require sufficient elevator capacity to maintain acceptable waiting and travel times. Increasing the number or size of elevators can improve transportation performance but expands the building core and reduces rentable or usable floor area.
Real Estate & Construction TRIZ Resolution
Vertical transportation performance can be improved through zoning, destination control, shared shafts, appropriate car sizing, double-deck systems where suitable, and demand-responsive operation rather than simply increasing elevator quantity. Traffic patterns should be managed alongside physical capacity.
Applicable TRIZ Principles
Principle 1 – Segmentation divides vertical transportation according to floors, functions, or demand patterns.
Principle 6 – Universality allows transportation resources to serve multiple compatible functions.
Principle 23 – Feedback adjusts elevator allocation according to real-time passenger demand.
Expected Outcome
Improved vertical transportation performance
Reduced core-area requirements
Greater rentable-area efficiency
Better passenger experience
Decision Indicators
Early indicators include:
Additional elevators are the primary response to traffic problems.
Core areas consume increasing proportions of typical floors.
Elevator utilization varies significantly across different periods.
Some cars remain underused while others experience congestion.
Transportation capacity is designed without detailed demand-pattern analysis.