As the ambitious construction rises in Kenya, the demand for vertical mobility solutions is also rising. Now more intelligent escalators are needed in the expansion of international airports, the scaling of global logistics hubs, and the rising of new shopping malls and commercial towers. But how can we choose the perfect specifications of escalators with these various needs in each facility while ensuring safety, efficiency, and uninterrupted flow of users? Here’s a brief guide.
First, Let’s Understand More about Escalator Classifications
Not all escalators are created equally. Their design, components, and durability are related to the intended use and the expected traffic. Misapplying an escalator type is an open door for frequent breakdowns, safety risks, and inflated lifecycle costs.
How Are Escalators Commonly Classified? By Duty and Traffic Volume
This is a main standard for escalators, directly tied to where and how intensively the escalator will be used, so add this standard as a priority in your purchasing decision. Basically, escalators are categorized into 3 types:
- Heavy-Duty Escalators: Basically means heavy traffic, but also reflects heavy climate, heavy industries, heavy seasons, and heavy locations.
- Heavy Volume: Just like in major shopping malls (e.g., Two Rivers Mall, The Hub Karen). Consistently high footfall, especially on weekends and evenings, which creates a constant need for heavy-duty escalators with the highest safety standards.
- Heavy Climate: Although Kenya is considered a diverse country in terms of climate, heavy duty here isn’t exclusively about the number of daily users; in coastal regions like Mombasa, escalators face high humidity, while in inland regions like Nairobi, they face dust, temperature variations, and high-altitude environmental challenges.
- Heavy Industries: In some industries like manufacturing zones, industrial parks, and large logistics hubs around Nairobi and Mombasa, heavy-duty escalators are required to withstand rugged, continuous use.
- Heavy Seasons: Kenya hosts events like international expos, major tourism seasons, and global conferences (e.g., UN summits in Nairobi). A blackout or system failure during a global event may cause a major safety risk to users and lead to a reputational disaster. This is also the reason why heavy-duty smart escalators are demanded with uncompromising quality and Class A safety standards.
- Heavy Transit Locations: Escalators engineered for 20+ hours of near-continuous operation with peak load conditions. They feature robust drive systems, high-grade step chains, and components designed to withstand the relentless pace of places like Nairobi railway stations, JKIA, and major bus terminals.
- Commercial / Standard-Duty: Designed for high-frequency use in retail, offices, and hotels, typically operating 12–16 hours daily. While durable, they balance performance with design flexibility to complement interior aesthetics, commonly seen in venues like malls across Nairobi and Mombasa.
- Light-Duty / Basic: Best for lower-traffic areas such as small offices, residential complexes, or institutional settings with non-regular use. This type of escalator is a cost-effective solution where no heavy flow is expected.
Second, Let’s Dig Deep into 5 Key Steps to Specify the Right Escalator
Selecting an escalator depends on several factors, but here is a systematic approach to ensure that specifications are aligned with your project needs.
Step 1: First, Analyze Your Building Traffic
This is a major step, and it should be taken upon facts and data only—no assumptions allowed:
- Analyze & Quantify Peaks:
The number of Persons-Per-Hour (PPH) rate during rush hours in the morning, in the evening, when people leave, and when a flight arrives. With this number you can calculate:
- Required speed (typically 0.5 m/s or 0.65 m/s)
- Step width (800 mm standard / 1000 mm high capacity)
This is Nominal PPH Formula
Nominal PPH=k×Step Speed (m/min)×Conversion Factor (60)Nominal PPH equals k cross Step Speed (m/min) cross Conversion Factor (60)
Nominal PPH=𝑘×Step Speed (m/min)×Conversion Factor (60)
- PPH = Persons Per Hour
- k = Number of passengers per step, determined by step width:
- k=1.0k equals 1.0
- 𝑘=1.0 for a 600 mm (approx. 24 in) wide step
- k=1.5k equals 1.5
- 𝑘=1.5 for an 800 mm (approx. 32 in) wide step
- k=2.0k equals 2.0
- 𝑘=2.0 for a 1000 mm (approx. 40 in) wide step
- Step Speed = Typically between 30 m/min and 45 m/min (0.5 m/s to 0.75 m/s).
- Conversion Factor (60) = Converts passengers per minute to passengers per hour.
For example, the nominal capacity of a standard 1000 mm wide escalator running at 0.5 m/s (30 m/min) is approximately 6,000 PPH (2.0×30×602.0 cross 30 cross 602.0×30×60).
- Flow Patterns: For example, in a metro station, the flow is usually bidirectional and rushed with the train arrivals. But for a mall, it may be more dispersed but more sustained. You can use simulation software to understand the bottlenecks in your facilities. And this analysis will not only give you the number of users but also the placement and direction of escalator banks that the flow demands.
Step 2: Define the Level of Compliance an Operating Escalator May Face
The “where” determines the “what.”
- Indoor vs. Outdoor: Outdoor escalators in Kenya must handle humidity, dust, rainfall, and temperature variations, especially in coastal or industrial regions.
- Architectural Integration: Finishing options such as glass balustrades, lighting, and cladding should match the facility’s interior or exterior design.
Step 3: Prioritize Safety Features and Technology (H3)
In the past few years, revolutionary developments have been made to increase safety in escalators; it’s now hard to detect escalators that catch objects like skirts, for example; most escalators are developed to have object sensors. Decision makers could take into their considerations more safety features, such as
- Step-Level Monitors & Skirt Sensors: Which automatically stop the escalator when they detect objects caught inside gaps or misaligned steps.
- Handrail Speed Synchronization Sensors: For ensuring that the handrail is moving at the exact same speed as the steps to keep passengers balanced.
- Comb Plate Impact Switches: Which stop operating when there’s something blocking the way at the entry or exit points.
- Safety Brush Borders: Act as a physical and visual barrier to keep users feet away from dangerous gaps in the escalator.
- Clear Safety Signage: Instructional signage, as emphasized by OEMs like Otis, is a primary layer of risk prevention, guiding proper user behavior.
Step 4: Evaluate Total Cost of Ownership (TCO) and Service (H3)
The purchase price is only the initial investment you’re making, but the strategic focus should be on TCO.
- Energy Consumption: Choose escalators models with high-efficiency motors and energy-saving modes; they allow effective energy consumption for the 24/7 operating escalators, which leads to huge cost savings in the long term.
It’s important to know that, as per regulations, thorough annual inspections and records are mandatory.
Step 5: Select the Right Partner (Provider/Vendor)
You are not just buying escalators; you are entering a 15–20 year partnership.
Choose a partner with:
- Proven track record inside Kenya
- Strong maintenance and technical expertise
- Fast response times
- Experience supplying escalators in similar facility types
Choosing the right escalator is a strategic decision that extends far beyond basic functionality. In Kenya’s ambitious landscape, where development scale, environmental diversity, and international visibility set exceptional standards, selecting the right technology and the right partner becomes a top priority.
