Walkways & Stairways


Conveyor Platforms, Walkway and Stairs are utilised in installations where equipment is installed at high level, and maintenance access is required.  Platforms and walkways may be mounted from building columns, floor, ceiling or a combination of all three, depending upon the requirements of the customer and the design of the building.

Steelwork is configured to suit the system requirements and is designed in accordance with BS 5395, BS5950 and/or the legislation of the country in which the Baggage Handling System is installed.

Platforms and Walkways

When there are a concentration of conveyors or handling devices at high level, these will often be mounted on a platform structure, rather than using a matrix of walkways for access.

All platforms and walkways should have handrails around all open sides. Toe plates shall be provided around all open sides of the platform and walkways and beneath the first step of any open riser stair.

The clear width to the side of the conveyor should be a minimum of 750mm.

Typical walkway arrangements:

Typical platform arrangement:


Stair access will generally be used where operator access is required, and ladders normally for occasional maintenance activities. Clear width should be minimum 750mm. The maximum pitch shall be 30o for straight stairs in general use and 42° for occasional access.

Landing design will follow the recommendations for platforms and walkways.  The length of the landing should be not less than the clear width of the stair or 850mm, whichever is the greater.

Straight stairs and landings shall have continuous handrails on both sides as shown below.  Helical and spiral stairs shall have handrails on the outside.

Ships Ladders

Where ladders are used for access, preference is given to ship’s ladders if space permits, otherwise normal fixed ladders are used.

For a ship’s ladder, the width between stringers shall be in the range of 450-550mm, with the slope in the range of 65-75°. 

All rises shall be uniform and in the range 225 - 255mm.

 A single handrail shall always be provided on both sides of a ship’s ladder. 

Fixed Ladders

Where fixed vertical ladders are used, the width between strings shall be in the range of 380 - 450mm.
A rise in a flight must be uniform and the top surface of the rung level with the platform or landing.  All rises shall be uniform and in the range 225 - 255mm

A safety cage shall be fitted whenever a user can fall 2 metres or more.


Conveyor Cross-Over

In some cases a conveyor cross-over may be required to pass from one side of a conveyor to the other. Depending upon spatial constraints and regularity of access, this cross-over may be made up of a pair of stairs, ship’s ladders or fixed ladder with a landing over the conveyor. In these instances the design guidelines used will be similar to that described above.



Design Loads

The design loadings will be determined to suit the specific project requirements, but typically the following guidelines can be considered:

Mezzanines and Platforms – Typically 200 to 300kg per square metre is used dependant on concentration and type of conveyors and miscellaneous devices. This value would account for the weight of the conveyor, bags and operators.  Where X-rays and Vertical Diverters are sited loading may be increased to take account of the additional load of each particular machine.

Walkways – Typically 150kg per square metre to account for operators or maintenance personnel.

Vertical deflection of beams due to imposed load: 1 in 360 of span of the beam
Vertical deflection of beams due to total load: 1 in 250 of span of the beam

Vertical deflection of floor decking to total load: 1 in 200 of span of the floor decking.

Horizontal deflections of column or hanger: 1 in 300 of the height of column or the length of hanger.

in     by Administrator 02-11-2017

Daifuku Logan Ltd, one of the World’s leading manufacturers of automated baggage handling systems, in partnership with Logan KSEC, is pleased to announce the successful delivery of its largest ever state-of-the-art BNP specification baggage handling system for the brand new T3 Terminal at Wuhan Tianhe Airport in China.


 The baggage system compromises of 6 check-in islands, each with 20 check-in desks, 18 arrivals carousels, 6 transfer baggage lines, 4 manual coding lines, 48 EBS lanes and 8 screening lines. The screening lines have 6 automatic MV Xray machines and 4 automatic CT Xray machines with additional explosive trace detection and level 5 baggage resolution areas.


 At the heart of the system lie 4 of Daifuku Logan’s leading edge tilt tray sorters consisting of 1462 trays with 30 induction points and over 400 chutes.


Baggage identification is realised by Radio Frequency Identification (RFID ) integrated seamlessly into all systems, this coupled with the end to end data tracking is reaching identification rates far beyond what is possible with standard optical systems. Each tilt tray sorter chute is fitted with a final RFID based bag information display system which automatically reads the bag as the bag is loaded into the unit loading device (ULD).


 Critical systems, such as the tilt tray sorters, utilise the latest Hot Standby PLC’s and full redundant power and network installations to ensure the highest availability possible.

Higher level systems supplied include SAC, 3D SCADA, CCTV, maintenance management and ATR management servers.

A tote return system delivers empty totes from the baggage hall back to each of the check-in desk positions.


Construction of the 220,000m2 Terminal started in June 2013 at an estimated cost of 40 billion yuan (£4.6 billion), and project delivery included a new runway, new control tower noted to be the tallest in Asia and a transportation hub connecting the airport to the city with intercity railway and metro line.

Starting from August 31st, all flights from T1 (international, Hong Kong, Macau and Taiwan) and T2 (domestic) were moved to Terminal 3, which is expected to accommodate 35 million passengers annually by 2020.

Daifuku Logan Ltd’s Managing Director, Ron Osborne stated:

“We are delighted with the new system, its leading edge, on time, on target delivery is a testament to the excellent working relationships and dialogue we have with the airport, the design teams for the terminal building, right down to all the sub-contracting companies since the projects conception.

We very much look forward to working closely with the airport on any of its future BHS project requirements”.






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