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The Plymouth System | Portable Stadium Tiered Seating

THE PLYMOUTH SYSTEM

TIERED LIGHT WEIGHT DEMOUNTABLE MODULAR GRANDSTAND SEATING SYSTEM SPECIFICATIONS

The Grandstand structure comprises a system of frames welded with interlocking system, ties, braces, beam & deck units that lock together to form a quick erect, structural support system.

Typical frames with height of 1.00m are linked together to provide a support structure that has a slope of variable riser heights in accordance with each project design, into which the deck units are installed to provide a continuous terraced platform surface.

Seat and balustrade units are fixed to the terraced platform decks to provide a safe secure interlocking seating area.

Seat and balustrade units are fixed to the terraced platform decks to provide a safe secure interlocking seating area.

  • Location of spectators, capacity, sightlines, entry and exit position
  • Access considerations such as: Stairs, Vomitories, Transverse Aisles, Ramps & accommodations for disabled people

 

TECHNICAL SPECIFICATIONS

The following are typical generic specifications which are varied, in accordance with each specific design brief, which can and is altered to suit each project specification.

Grid : Width:

1800mm x 3000mm
2000mm x 3000mm
1829mm (6’) x 3050mm (10’)

Gradients and Heights Setting (Riser):

125mm or 250mm or 375mm

Step Depth:

750mm or 800mm or 850mm

Seat Spacing:

450mm or 500mm

Seat Rest:

370mm for bucket seat – 400mm for tip-up seat

Spacing Between 2 Rows:

350mm for bucket seat
500mm for tip-up seat

Load Capacity:

5kN/m²

Dead Load:

25kN/m²

 

MATERIALS

The following are typical generic specifications which are varied in accordance with each specific design brief.

  • Truss
    Each truss T4 support 4 rows of 4 seat spacing between rows is 750mm. Truss 3.0m length, hot dipped galvanised high tensile strength steel tube. The structure is fully welded to produce a rigid framework. Frames are inter-locked together horizontally.

  • Post-Ledger-Brace
    They are constructed from hot dipped galvanised high tensile strength steel pipe diameter 48.3mm x 3.2mm with locking pins.

  • Deck Units (Platform)
    Deck units (platform) are made of 12mm thick anti-slip phenolic film faced-plywood. The plywood is supported and bolted on 3 units SHS 28mm x 38mm x 3mm thick. When installed in the grandstand, deck units are captive with the frame cleats and provided self-interlocking system. Alternative galvanised steel decks are available.

  • Base Jacks
    Base Jacks are constructed from 38mm diameter thick hot dipped galvanised steel bar with a base plate 150mm x 150mm x 6mm. Base Jacks may be incorporated to provide for a maximum total adjustment range of which ensures that the structure is capable of being used safety on virtually any ground contour.

  • 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.

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

    • 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 module 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.

  • Ground Conditions
    Each installation requires a detailed Geo Tech Survey of the load bearing capacity of existing ground conditions prior to installation.

 

Gallery

Project Gallery

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