GRP-Stairtreads
GRP-stairtreads consist of a GRP-grating with a black gritted GRP-angle or a laminated black gritted GRP flat material as nosing. Usually therefore a 38 mm high GRP-grating is used. The angle serves as a reinforcement of the stairtread in the traffic area and the flat material only as a visible edge. On request the supporting angles 75x75x8 mm with lateral holes as side plates can be supplied. These are connected to the stairtread with direct fixing material.
Substructure for stairs - Extract DIN EN ISO 14122-3
The stairs must be capable of bearing the following loads on their nosing:
- 1.5 kN point load distributed over an area of 100 x 100 mm on1.5 kN point load distributed over an area of 100 x 100 mm onits nosing in the middle of the stair for a solid centre width w < 1200 mm
- 1.5 kN point load at any one time distributed over an area of1 00 x 100 mm at 600 mm intervals from the nosing for a solidcentre width w ≥ 1200 mm.
- The deflection under load between the frame and stairtread mayThe deflection under load between the frame and stairtread maybe no greater than 1/300 of the span, to a maximum of 6.0 mm.
| GRPStairtreads with angle as nosing 60x60x8 mm | Height in mm | Pitch in mm | Mesh in mm | Bridge in mm | Weight kgs/sqm² | dimension in mm | on stock |
|---|---|---|---|---|---|---|---|
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 617 x 244 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 807 x 244 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 998 x 244 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 1227 x 244 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 617 x 282 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 807 x 282 | X |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 998 x 282 | X |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 1227 x 282 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 617 x 320 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 807 x 320 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 998 x 320 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 1227 x 320 | |
| K538-38-5; grey RAL7035 | 38 | 38,10 x 38,10 | 31,20 x 31,20 | 5 - 6,9 | 18,82 | 3665 x 320 | X |
The chemical resistance of the grating is determined bey the resin used. The followong resin versions are possible:
| Orthophal resin: | medium chemical resistance |
| Isophtalic resin: | good chemical resistance |
| Vinyl ester resin: | very good chemical resistance |
Fixing material B638K
Direct fixing B638K
For GRP-Gratings with a pitch of 38,1x38,1 / 40x40 mm and a max. width of bars 5 to 6,9 mm:
consisting of:
- Clamp upper part XOK13840
- Screw M8 DIN 933
- Nut M8 DIN557
- Plastic locking ring
Screw length at least grating height plus 40 mm.
The fixing material is available in galvanized steel, stainless steel V2A and V4A
Order No. B638T-ST+screw length (glavanized)
Order No. B638T-A2+screw length (stainless steel V2A)
Order No. B638T-A4+screw length (stainless steel V4A)
GRP-Sideplates
GRP-Sideplates L75x75x8
produced on Basis of an GRP-Angle 75x75x8:
- with Lichtgitter drilling pattern adapted to the chosen Tread dimension.
The GRP-Sideplates can be supplied lose, or preassembled with fixing material B638K. They allow an easy conection of the treads with the stair stringer.
