Dosbarthu Pentwr Llen Dur - Grŵp Brenhinol
Mae pentwr dalennau dur yn fath o ddur gyda chlo, mae gan ei adran siâp plât syth, siâp rhigol a siâp Z, ac ati, mae yna wahanol feintiau a ffurfiau cyd-gloi.Y rhai cyffredin yw Larsen, Lackawanna ac ati.Ei fanteision yw: cryfder uchel, hawdd ei yrru i'r pridd caled;Gellir ei adeiladu mewn dŵr dwfn, pan fo angen i ychwanegu cefnogaeth groeslinol i ddod yn gawell.Perfformiad diddos da;Yn ôl yr angen i ffurfio amrywiaeth o siapiau o cofferdam, a gellir ei ddefnyddio dro ar ôl tro, felly mae ganddo ystod eang o ddefnyddiau.
Tabl manyleb cyffredin o bentyrrau taflen ddur siâp U
| Math | Lled | Uchder | Trwch | Ardal adrannol | Pwysau fesul pentwr | Pwysau fesul wal | Moment o Inertia | Modwlws yr adran |
| mm | mm | mm | Cm2/m | Kg/m | Kg/ m2 | Cm4/m | Cm3/m | |
| WRU7 | 750 | 320 | 5 | 71.3 | 42.0 | 56.0 | 10725. llarieidd-dra eg | 670 |
| WRU8 | 750 | 320 | 6 | 86.7 | 51.0 | 68.1 | 13169. llarieidd-dra eg | 823 |
| WRU9 | 750 | 320 | 7 | 101.4 | 59.7 | 79.6 | 15251 | 953 |
| WRU10-450 | 450 | 360 | 8 | 148.6 | 52.5 | 116.7 | 18268. llarieidd-dra eg | 1015 |
| WRU11-450 | 450 | 360 | 9 | 165.9 | 58.6 | 130.2 | 20375 | 1132. llarieidd-dra eg |
| WRU12-450 | 450 | 360 | 10 | 182.9 | 64.7 | 143.8 | 22444. llarieidd-dra eg | 1247. llarieidd-dra eg |
| WRU11-575 | 575 | 360 | 8 | 133.8 | 60.4 | 105.1 | 19685 | 1094 |
| WRU12-575 | 575 | 360 | 9 | 149.5 | 67.5 | 117.4 | 21973 | 1221 |
| WRU13-575 | 575 | 360 | 10 | 165.0 | 74.5 | 129.5 | 24224 | 1346. llarieidd-dra eg |
| WRU11-600 | 600 | 360 | 8 | 131.4 | 61.9 | 103.2 | 19897 | 1105. llarieidd-dra eg |
| WRU12-600 | 600 | 360 | 9 | 147.3 | 69.5 | 115.8 | 22213 | 1234. llarieidd-dra eg |
| WRU13-600 | 600 | 360 | 10 | 162.4 | 76.5 | 127.5 | 24491. llechwraidd eg | 1361. llarieidd-dra eg |
| URC18- 600 | 600 | 350 | 12 | 220.3 | 103.8 | 172.9 | 32797 | 1874. llarieidd-dra eg |
| URC20- 600 | 600 | 350 | 13 | 238.5 | 112.3 | 187.2 | 35224 | 2013 |
| URC16 | 650 | 480 | 8. | 138.5 | 71.3 | 109.6 | 39864. llathr | 1661. llarieidd-dra eg |
| URC 18 | 650 | 480 | 9 | 156.1 | 79.5 | 122.3 | 44521. llechwraidd a | 1855. llarieidd-dra eg |
| URC20 | 650 | 540 | 8 | 153.7 | 78.1 | 120.2 | 56002 | 2074 |
| URC23 | 650 | 540 | 9 | 169.4 | 87.3 | 133.0 | 61084 | 2318. llarieidd-dra eg |
| URC26 | 650 | 540 | 10 | 187.4 | 96.2 | 146.9 | 69093 | 2559 |
| WRU30-700 | 700 | 558 | 11 | 217.1 | 119.3 | 170.5 | 83139 | 2980 |
| WRU32-700 | 700 | 560 | 12 | 236.2 | 129.8 | 185.4 | 90880 | 3246. llarieidd |
| WRU35-700 | 700 | 562 | 13 | 255.1 | 140.2 | 200.3 | 98652 | 3511 |
| WRU36-700 | 700 | 558 | 14 | 284.3 | 156.2 | 223.2 | 102145 | 3661. llarieidd |
| WRU39-700 | 700 | 560 | 15 | 303.8 | 166.9 | 238.5 | 109655 | 3916. llarieidd-dra eg |
| WRU41-700 | 700 | 562 | 16 | 323.1 | 177.6 | 253.7 | 117194 | 4170 |
| URC 32 | 750 | 598 | 11 | 215.9 | 127.1 | 169.5 | 97362 | 3265. llarieidd |
| URC 35 | 750 | 600 | 12 | 234.9 | 138.3 | 184.4 | 106416 | 3547. llarieidd |
| URC 38 | 750 | 602 | 13 | 253.7 | 149.4 | 199.2 | 115505 | 3837. llarieidd-dra eg |
| URC 40 | 750 | 598 | 14 | 282.2 | 166.1 | 221.5 | 119918 | 4011 |
| URC 43 | 750 | 600 | 15 | 301.5 | 177.5 | 236.7 | 128724. llechwraidd a | 4291 |
| URC 45 | 750 | 602 | 16 | 320.8 | 188.9 | 251.8 | 137561. llechwedd eg | 4570 |
Amser postio: Chwefror-02-2023