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The Otara System | Portable Stadium Tiered Seating

The Otara System Portable Stadium Tiered Seating

Tiered Light Weight Demountable Modular Grandstand Seating System Specifications

The grandstand structure is based on the innovative design of modular shipping containers and has been developed to produce a retractable folding stadia seating system. By its modular design, it is stronger, faster to assemble and more versatile than other event seating.

Any size grandstand can be designed within the container modulation design concept – as building blocks (limited to truck transport modules).

The rear four rows compact and fold down onto the first three seating rows for movement and storage purposes. Each module provides 85 to 126 seats purpose designed and is a self-contained seating unit.

Seat and balustrade units are independently fixed to the terrace decks to provide a safe interlocking seating area.

The system is available in a number of different platform depths, riser heights and seating space configurations.

The system is designed with a live load capacity of 5KN/m² and a dead load of 0.25KN/m².

The system is hot dipped galvanised for an extended life protection.


Technical Specifications

  • Seat Units

    Steel framed seat units are fixed to the frame units with integral hooks and are locked onto the frame with a hidden locking bolt. The seat units when not in use are designed so that they nest intimately together to provide extremely compact storage. Seats are made of U.V. stabilised polypropylene with bright and smooth appearance. 3 type of seats:

    • Bucket Seat: Clearway : 350mm : Seat spacing 450mm or 500mm. Seat rest 360mm.

    • Tip-Up Seat: Clearway : 500mm : Seat spacing 500mm Seat pans 410mm deep and 425mm wide. Seat rest : 400mm high and 425mm wide

    • VIP Seat with Armrest: Seat spacing 600mm

  • Balustrades and Safety Rails

    Side balustrades are connected to the deck units and to the frame and are positioned to provide a barrier height of 1100mm above the deck level. Front and rear balustrades area connected to high-strength posts that are connected directly to the high-strength post.
    Imposed load of barriers : 1KN/m to 2KN/m.

  • Aisles and Gangways

    Aisles and gangways are generously proportioned to provide for clear unobstructed access. The access can be provided by front staircase, rear staircase, internal staircase or ramp. The modular staircase gets used to any ground conditions. Latest regulations concerning safety barriers, live load and guardrails load are met, and each of the above is project specific.

  • Special Platform

    The grandstand system is designed to allow special platforms for:

    • Disabled people
    • Press desk
    • Camera
    • Control platform
    • VIP area and VIP box

    All structure members are hot dipped galvanised for extended life protection.

  • Installation

    Typically a 3,000 seat module can be installed in 13-15 hours, with two (2) forklifts and drivers, plus ten (10) workers installing the seats and handrails.


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