Timber Engineering Dictionary: R (German-English)
| Radius | radius |
| Rahmen | portal frame |
| Rahmen, (Tür-) | jamb, (door) |
| Randabstand | edge distance |
| Randträger, an den Deckenträger anschließen | header |
| redundant, repetitiv | redundant |
| Regenrinne | eavestrough |
| Reibung | friction |
| Reibungsspannung | friction tension |
| Reißen | splitting |
| relativ, im Verhältnis | proportional |
| Resultierende | resultant |
| Riegel | beam |
| Rille | groove |
| Rillennagel | threaded nail |
| Rinde | bark |
| Rindeneinschluß | inbark |
| Ringriß | ring shake |
| Rippe | stiffener |
| Riß | crack |
| Riss | split |
| Riss (Ringschäle) | shake |
| Ritterschnittverfahren | cut-and-sum method |
| Rohr | pipe |
| runden | round off |
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