Gutanga Ibirundo by'Ibyuma- Itsinda ry'Abami
Ikirundo cy'icyuma ni ubwoko bw'icyuma gifite ingufuri, igice cyacyo gifite imiterere igororotse, imiterere y'umuyoboro n'imiterere ya Z, nibindi, hari ingano zitandukanye n'imiterere ifatanye. Isanzwe ni Larsen, Lackawanna n'ibindi. Ibyiza byacyo ni: gukomera cyane, byoroshye kuyishyira mu butaka bukomeye; Ishobora kubakwa mu mazi maremare, iyo bibaye ngombwa kugira ngo yongereho inkunga y'umurongo kugira ngo ibe ikiraro. Ifite ubushobozi bwo kwirinda amazi; Ikurikije ko ikeneye gukora imiterere itandukanye ya cofferdam, kandi ishobora gukoreshwa kenshi, bityo ikaba ifite uburyo bwinshi bwo kuyikoresha.
Imbonerahamwe isanzwe y'ibipimo by'imirundo y'icyuma ifite ishusho ya U
| Ubwoko | Ubugari | Uburebure | Ubunini | Agace k'igice | Uburemere kuri buri murundo | Uburemere kuri buri rukuta | Igihe cy'ubunebwe | Moduli y'igice |
| mm | mm | mm | Cm2/m | kg/m | kg/ m2 | Cm4/m | Cm3/m | |
| WRU7 | 750 | 320 | 5 | 71.3 | 42.0 | 56.0 | 10725 | 670 |
| WRU8 | 750 | 320 | 6 | 86.7 | 51.0 | 68.1 | 13169 | 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 | 1015 |
| WRU11-450 | 450 | 360 | 9 | 165.9 | 58.6 | 130.2 | 20375 | 1132 |
| WRU12-450 | 450 | 360 | 10 | 182.9 | 64.7 | 143.8 | 22444 | 1247 |
| 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 |
| WRU11-600 | 600 | 360 | 8 | 131.4 | 61.9 | 103.2 | 19897 | 1105 |
| WRU12-600 | 600 | 360 | 9 | 147.3 | 69.5 | 115.8 | 22213 | 1234 |
| WRU13-600 | 600 | 360 | 10 | 162.4 | 76.5 | 127.5 | 24491 | 1361 |
| WRU18- 600 | 600 | 350 | 12 | 220.3 | 103.8 | 172.9 | 32797 | 1874 |
| WRU20- 600 | 600 | 350 | 13 | 238.5 | 112.3 | 187.2 | 35224 | 2013 |
| WRU16 | 650 | 480 | 8. | 138.5 | 71.3 | 109.6 | 39864 | 1661 |
| WRU 18 | 650 | 480 | 9 | 156.1 | 79.5 | 122.3 | 44521 | 1855 |
| WRU20 | 650 | 540 | 8 | 153.7 | 78.1 | 120.2 | 56002 | 2074 |
| WRU23 | 650 | 540 | 9 | 169.4 | 87.3 | 133.0 | 61084 | 2318 |
| WRU26 | 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 |
| 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 |
| WRU39-700 | 700 | 560 | 15 | 303.8 | 166.9 | 238.5 | 109655 | 3916 |
| WRU41-700 | 700 | 562 | 16 | 323.1 | 177.6 | 253.7 | 117194 | 4170 |
| WRU 32 | 750 | 598 | 11 | 215.9 | 127.1 | 169.5 | 97362 | 3265 |
| WRU 35 | 750 | 600 | 12 | 234.9 | 138.3 | 184.4 | 106416 | 3547 |
| WRU 38 | 750 | 602 | 13 | 253.7 | 149.4 | 199.2 | 115505 | 3837 |
| WRU 40 | 750 | 598 | 14 | 282.2 | 166.1 | 221.5 | 119918 | 4011 |
| WRU 43 | 750 | 600 | 15 | 301.5 | 177.5 | 236.7 | 128724 | 4291 |
| WRU 45 | 750 | 602 | 16 | 320.8 | 188.9 | 251.8 | 137561 | 4570 |
Igihe cyo kohereza: Gashyantare-02-2023