Barrierenstufen
| Material | Dünn | Normal | Dick | Verstärkt |
| Holz | 1 | 3 | 6 | 12 |
| Sperrholz | 2 | 4 | 8 | 16 |
| Panzerglas | 3 | 6 | 12 | 24 |
| Bauplast | 4 | 8 | 16 | 32 |
| Stoßplast | 5 | 10 | 20 | 40 |
| Stahlblech | 6 | 12 | 24 | 48 |
| Ballistoplast | 7 | 14 | 28 | 56 |
| Beton | 8 | 16 | 32 | 64 |
| Stahlbeton | 9 | 18 | 36 | 72 |
| Durabeton | 10 | 20 | 40 | 80 |
| Stahl | 11 | 22 | 44 | 88 |
| Plastisteel | 12 | 24 | 48 | 96 |
© 2000 by Claus van Beek
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