Article 12- Necessary Information to Order an Escalator
What to know for ordering an escalator?
Before ordering an escalator, we should have some information about the installation environment, passenger traffic, and other related information in the case of the dimensions and sizes which are related to the building.
Installation Environment
Based on the installation environment, escalators are divided into the following categories, each of which has its own set of options and specifications:
- Indoor
An Indoor escalator must be installed inside the building.
- Semi-Outdoor
A Semi-outdoor escalator must be installed outside the building with a roof above it.
- Fully-outdoor
A Fully-outdoor escalator must be installed outside the building without a roof above it.
Based on project requirements, the customer can select one of the aforementioned options.
Passenger Traffic
Based on passenger traffic, escalators are divided into the following categories:
- Standard Type
In commercial buildings and locations with normal passenger traffic and normal hours of operation, we use the standard types of escalators.
- Heavy duty
In infrastructures such as railway and urban subway systems where passenger traffic is very high and the device is used 24 hours a day we use heavy-duty escalators that have their own special technical specifications.
Available Elevation Height
The elevation height is defined as the level difference between two finished floor surfaces.
Angle of Inclination
Based on the standard, Escalators are manufactured in 30 and 35-degree angles which can both be used for elevation heights of up to 6 meters. However, for elevation heights of more than 6 meters, only the 30-degree escalators can be selected. Obviously, for the higher escalator angle, the less horizontal length is required, so 35-degree escalators are used in spaces where the horizontal length is limited.
In moving walks, common angles are between 0 to 6 and 10 to 12 degrees.
Width Measurements
The standard escalator step widths are divided into three categories:
- 600 millimeters
- 800 millimeters
- 1000 millimeters
The total escalator truss width corresponding to each of step widths are as below:
- 1200 millimeters
- 1400 millimeters
- 1600 millimeters
The total escalator width including required installation gaps corresponding to each of step widths are as below:
- 1260 millimeters
- 1460 millimeters
- 1660 millimeters
The standard moving walk pallet widths are divided into three categories:
- 800 millimeters
- 1000 millimeters
- 1100 millimeters
- 1200 millimeters (only for angles 0 up to 6 degrees)
- 1400 millimeters (only for angles 0 up to 6 degrees)
The total moving walk truss width corresponding to each of pallet widths are as below:
- 1400 millimeters
- 1600 millimeters
- 1700 millimeters
- 1800 millimeters (only for angles 0 up to 6 degrees)
- 2000 millimeters (only for angles 0 up to 6 degrees)
The total moving walk width including required installation gaps corresponding to each of pallet widths are as below:
- 1460 millimeters
- 1660 millimeters
- 1760 millimeters
- 1860 millimeters (only for angles 0 up to 6 degrees)
- 2060 millimeters (only for angles 0 up to 6 degrees)
Horizontal Length
The Horizontal Length is measured based on elevation height. After choosing the appropriate angle, in accordance with the formula for each angle, the horizontal length will be determined. It is equal to the horizontal distance between two construction beams, located on the lower and upper floors.
The required length must be considered in the design phase of the building.
Ceiling Opening
In order to install an escalator, an opening must be considered on the upper floor with a suitable width and length. The opening width is equal to the total escalator(s) width and the opening length must be designed in a way that the vertical height between the step tread surface and under the available ceiling is never less than 2.30 meters. This vertical height must exist to create a safe passenger headroom.
The required length must be considered in the design phase of the project.
Wellway Opening (Pit Opening)
In order to install an escalator, a pit with a suitable width and length must be considered on the lower floor. The pit width is equal to the whole escalator(s) width and the length must be designed in a way that the lower section of the truss can be located inside the surface of the lower floor. As a result, the escalator floor plate will be at the same level as the lower floor finished surface.
The required length must be considered in the design phase of the project.
