Prefabricated, Pre-Engineered & Permanent Foam Stadium Seating Forming System – Solutions

PREFoam^TM Solutions

seismic reinforced systems, riser mount seat systems, floor mount seat systems

The SSE Prefabricated, Pre-Engineered PREFoam EPS Geofoam Stadium Seating Riser System is the result of an innovative use of Geofoam, a foam material that has been used as structural fill material in construction for more than forty years. Our unique application of EPS Geofoam produces an environmentally and acoustically friendly prefabricated stadium seating solution.

EPS Geofoam has a very high strength to density ratio and is extremely lightweight at approximately 1 pound per cubic foot.

Unlike other materials, EPS Geofoam can easily be molded or cut in an arc or other custom shapes depending upon the owner’s preference. EPS Geofoam is also easily cut into a tapered shape to be used throughout the building for ramps and landings. This is the easiest and most cost effective method of constructing ramps and landings available.

Easily installed by the general contractor, the PREFoam EPS Geofoam fill is brought into the auditorium in precut foam blocks and attached to the existing floor and subsequent layers by means of a non-solvent based adhesive. Subsequently the 12 or 16 gauge prefabricated steel riser plates, intermediate steps forms and connecting hardware are installed prior to pouring the concrete platform.

The SSE PREFoam EPS Geofoam Prefabricated, Pre-Engineered Permanent Stadium Seating Forming Riser System is the most straightforward and cost effective solution for stadium seating / riser platform systems in the stadium seating industry.

PREFoam Prefabricated, Pre-Engineered EPS Geofoam Permanent Stadium Seating Forming Platforms can be installed and ready for concrete and finishes by the general contractor in as little as 1- 2 days per section or auditorium.

System Installation

PREFoam Stadium Seating Systems

SSE offers three different PREFoam EPS Geofoam prefabricated, pre-engineered Stadium Seating Riser Systems depending on the seismic requirements of the project and the specific requirements of the design architect.

Standard Floor Mount System

The standard permanent stadium seating forming system is designed to provide a one-hour rated assembly with the addition of cement board between the riser face and the EPS Geofoam.

Seismic Reinforced/Riser Mount Seats System

In addition SSE offers a PREFoam prefabricated, pre-engineered seating system that can be designed with 4" of vertical concrete between the EPS Geofoam and the prefabricated riser plate to accommodate structural reinforcement or riser mounted seat brackets.

Regardless of which variation of the PREFoam stadium seating system is chosen, SSE’s customers select the PREFoam Systems due to their unprecedented Economy, Flexibility and Speed / Ease of Installation.

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Structural EPS Foam

The PREFoam EPS Geofoam blocks are installed into the auditoriums after all of the walls are constructed and the high work on the ceilings has been completed. Each of the foam blocks come pre-numbered from the manufacturer corresponding to the Shop Drawings provided by SSE. The standard EPS Geofoam stadium seating blocks are trimmed to fit the platform width with a hot wire kit provided by SSE, assembled according to the drawings and secured by means of a non-solvent based adhesive provided by the installing contractor.

Steel Riser Plate

Once the EPS Geofoam blocks are in place and secured the prefabricated 12 or 16 gauge steel riser plate is put into position. Like the EPS Geofoam blocks, each of the prefabricated, pre-engineered steel components comes pre-numbered from the manufacturer corresponding to the SSE Shop Drawings.

Connecting Hardware

The final step in the installation of the SSE PREFoam EPS Geofoam Prefabricated, Pre-Engineered Permanent Stadium Seating Forming Riser System prior to pouring the concrete topping slab is the attachment of the connecting hardware and intermediate step forms. Each of the system intermediate step forms, connector plates and connecting hardware is secured to the riser plate by means of self-tapping screws. This final attachment procedure secures each row of prefabricated riser plates to the walls and other levels of riser plates assuring a straight and strong assembly in preparation for pouring the concrete topping slab.

Concrete Topping Slab

Once the EPS Geofoam and prefabricated, pre-engineered steel stadium and auditorium seating components are secured the concrete subcontractor will pump the concrete topping slab over the EPS Geofoam block and prefabricated steel riser plates as well as into the intermediate step forms in one continuous pour. The prefabricated steel riser plates serve as a screen for the concrete pour. Once the concrete pour is complete and it has cured to a sufficient degree, the steel riser plate and step forms will be painted by the installing contractor prior to the installation of the pre-engineered stadium seating.

Complete Installation

This photo shows the complete installation of our PREFoam prefabricated, pre-engineered permanent stadium seating forming system including the seats, lighting, handrails and acoustic panels. This series of photos shows an installation using floor mounted seats. The SSE PREFoam EPS Geofoam prefabricated Stadium Seating Riser System can also be used with riser mounted seats, however, heavier 12 gauge steel is used and typically the prefabricated riser plate is held away from the EPS Geofoam by 4" to accommodate the installation of a seat bracket encased in a vertical 4" concrete pour. This system is described above and also provides a solution compatible with seismic zone 4 criteria.

Downloadable Documents

EPS Physical Properties

SSE Spec - Standard System

SSE Spec - Riser Mount System

SSE System Isometric - Standard System

SSE System Isometric - Riser Mount System