| Stringer | 200*100*5mm in carbon steel |
| Tread support | 6mm thickness steel plate |
| Stair tread | 60mm thickness solid wood tread |
| Railing # height | 36''/42''/1000mm |
| Baluster | 50*10mm in carbon steel |
| Vertical steel bar | 8mm in carbon steel |
| Top handrail | 50mm in solid wood |
