| Subject | English | German |
| gen. | effective arch span | Bogenstützweite |
| construct. | effective span | rechnerische Spannweite (Stützweite) |
| stat. | effective span | rechnerische Spannweite |
| construct. | effective span | Auflagermittelpunktsabstand |
| transp. | effective span | effektive Spannweite |
| construct. | effective span | Hauptöffnung |
| construct. | span, clear width, clear span, effective span, width of span | Lichtweite |
| construct. | span, clear width, clear span, effective span, width of span | Tragweite |
| construct. | span, clear width, clear span, effective span, width of span | Stützweite |
| construct. | span, clear width, clear span, effective span, width of span | Spannweite |