Choosing the Right Elevator for Your Building: A Developer's Complete Guide

Passenger, freight, MRL, panoramic, hospital — the choices are many and the implications are long-term. Here is how to match the right elevator type to your building before the shaft is poured.

The elevator specification for a building is one of the most consequential decisions a developer makes — and one of the least understood. It is made early, usually under budget pressure, and lives with the building for twenty to thirty years. A wrong choice is expensive to fix. A good choice is invisible: passengers arrive at their floor, and no one gives the elevator a second thought.

In over four decades of installing elevators across Kenya and Tanzania, we have seen every type of specification mistake — from undersized passenger cars in busy office towers to hospital elevators specified without stretcher compatibility. This guide is our attempt to help developers and architects make better decisions earlier in the process.

Step 1: Understand Your Traffic Demand

Before any discussion of elevator type, the fundamental question is: how many people need to move how quickly, at what peak time? This is answered through a traffic analysis — a calculation based on the building's occupancy, the distribution of people across floors and the peak traffic intervals (typically the morning arrival peak for office buildings, meal times for hotels and mixed-use).

The key output of a traffic analysis is the Interval — the average waiting time between elevator arrivals at the lobby — and the Handling Capacity — the percentage of the building's population that can be transported in five minutes. For office buildings, an interval of under 30 seconds and a handling capacity of 12–15% is considered excellent. Getting these numbers right determines how many elevators you need and what size they should be.

Passenger Elevators: The Core Specification

The standard passenger elevator covers the vast majority of applications — residential buildings of four floors or more, office towers, hotels and mixed-use developments. The key variables are car capacity (typically expressed in kg and persons), speed (m/s), drive type and door configuration.

Machine Room-Less (MRL) Elevators: The Modern Standard

MRL technology has largely replaced the traditional machine room for low to mid-rise applications. By locating the traction machine in the shaft headroom or within a small control cabinet, MRL systems save the floor area of the machine room — typically 8–12 square metres that can be converted to rentable space. They are also quieter than their machine room counterparts, which matters in residential buildings where the machine room is often adjacent to the top floor.

The Hyundai MRL range we supply operates at speeds up to 2.5 m/s and covers capacities from 320kg to 2,000kg. For buildings up to approximately 40 floors, MRL is almost always the correct specification. Above that, a more powerful machine is required and a machine room becomes appropriate.

Hospital Elevators: Non-Negotiable Specifications

Hospital elevators are not simply larger passenger elevators. They carry patients on stretchers and beds, medical equipment on trolleys and clinical staff under time pressure. The specification requirements are significantly more demanding, and getting them wrong in a healthcare setting has direct patient care implications.

Freight Elevators: Engineering for Heavy Loads

Freight elevators in Kenya are often specified as an afterthought — once the building is substantially designed. This is a mistake. A freight elevator with a capacity of 2,000–5,000kg requires a pit depth and overhead height that is different from a passenger elevator. It needs a landing door that is wide and tall enough for forklift or pallet entry. The shaft structure needs to carry loads that a passenger elevator shaft is not designed for.

Specify the freight elevator at concept design stage, alongside the passenger elevators. Define the maximum load, the access requirements (forklift? manual pallet jack? hand trolley?), and the operating environment (dust, humidity, vibration from adjacent machinery). These factors determine the specification completely.

Panoramic Elevators: When the Journey Is the Experience

Panoramic and glass elevators are a design feature as much as a transport system. In hotel atriums, shopping malls and corporate headquarters, a well-positioned panoramic elevator communicates quality and draws the eye. The engineering requirements are broadly similar to a standard passenger elevator, but the visual exposure of the shaft means that the guide rail system, rope arrangement and machine must all be considered from an aesthetic as well as functional perspective.