General
The panels shall b e steel cement /cementitious /cement filled of size600m mx600mm x 35mm and C800 /C 1000 /C1250 model, and consist ofstructurally rigid c e l l assemblies fabricated entirely from non-combustible components. They shall consist of a flat steel top of thickness 0.8 / 1.0 / 1.2mm resistance welded in minimum 100 locations to steel bottom section of 0.7 / 1.0 / 1.0mm. The exterior surface of the access floor panel shall be protected from corrosion by a process of cleaning, phosphating, and coating with an electro-statically applied rust resistant and conductive polyester powder coating paint to a thickness of 60 microns. The panel shall be capable of supporting the design load with a minimum safety factor of 3 at the weakest point of the panel, based on ultimate strength of the material.

Filling
The core interior of the panel should be filled with non-combustible cementitious compound, to support no less than 80% of the top skin or surface of the panel.

Covering
The panel sshall be either supplied bare, coated with an electro-statically applied rust resistant and conductive polyester powder coating paint to a thickness of 60 microns, or with a factory finish option as per architectural recommendations. Vinyl finishes to be 1.5mm anti-static or conductive; HPL finishes to be 1.0mm anti-static.

Pedestal assembly
The Cross-Head understructure system shall consist of an electro-galvanised and factory assembled pedestal base, aluminium die-cast cruciform shape pedestal head, with a black conductive pvc gasket. The system shall be capable of supporting an axial load of not less than 32.00 kN for a finished floor height of 75mm to 300mm. The pedestal assembly shall be specific to the Cross-Head understructure system as manufactured by RFT.

Pedestal base
The pedestal base should consist of a10 0 m mx100mm x2 . 0 m m thick electro-galvanised steel base plate welded to a 19.0mm outside diameter electro-galvanised steel threaded rod.

Pedestal head
The pedestal head shall consist of a 71 m mx71 m m cruciform die-cast aluminium composite hea with a material thickness of 3.0mm, threaded into an electro-galvanised threaded tube of 19.0mm outside diameter. A black rubber conductive gasket is placed on the cruciform head and is an integral part of the system.

Assembly
A corrosion resistant 9mm deep electro-galvanised nut shall be provided and shall allow for adjustment of the pedestal assembly over a minimum range of 50mm.

Pedestal assembly
The Stringer Grid understructure system shall consist of a pedestal assembly that shall be designed to allow the mechanical fixing of hollow galvanised tube sections (stringers). The pedestal assembly shall consist of an electro-galvanised and factory assembled pedestal base and pedestal head, which shall be capable of supporting an axial load of not less than 32.00 kN for a finished floor height of 150mm to 1800mm. The pedestal assembly shall be specific to the Stringer Grid system as manufactured by RFT.

Pedestal base
The pedestal base should consist of a base plate 9 7 m mx97mm x2.0mm electro - galvanised steel mechanically fixed/ welded to a 25.0 mm outside diameter electro-galvanised steel tube with a wall thickness of 1.6mm.

Pedestal head
The pedestal head shall consist of a 7 6 m mx 7 6 m m electro-galvanised steel plate, with a material thickness of 3.0mm, welded to an electro-galvanised threaded tube of 19.0mm outside diameter.

Assembly
A (two) corrosion resistant 9mm deep electro-galvanised nut(s) shall be provided and shall allow for adjustment of the pedestal assembly over a range of 50mm without rotation of the pedestal head. The nut shall be prevented from rotating by using an extra 9mm deep electro-galvanised nut or a tapered pedestal base tube.

Stringer
The stringer shall beof 1.0mm thickcold-rolled hot-dipped galvanised steel section, nominally 600mm in length, designed to be mechanically fixed with a galvanised 6.0mm thick screw onto the pedestal head. The screw location on the stringer shall be countersunk