Uzi byinshi ku bipimo n'ingano by'imirundo y'icyuma?
Igiciro cy'uruganda JIS SY295 SY390 U Type Hot Zinged Steel Sheet Piles
Incamake y'ibicuruzwa
Itsinda rya Royal Steel ritangaJIS A5528 SY295 SY390 ifite icyuma gishyushye cya U hamwe bikoreshwa cyane kuriishingiro,urukuta rwo kubungabunga, cofferdam,ibyambu, inkuta z'inyanja, imishinga y'imigezinaibindi bikorwa remezo by'abaturageJIS A5528 ni igipimo ngenderwaho gikoreshwa ku byuma bishyushye bizinze mu gupfuka, gupfuka no gufunga ishingiro ry'inyubako.
Ibirundo by'impapuro zo mu bwoko bwa Uifite imbaraga nyinshi mu miterere yayo kandi ikagira ubushobozi bwo gufungana no kuramba.Ibirundo by'impapuro bifite ishusho ya Uifite imbaraga nziza cyane mu nyubako, ifatanye neza kandi iramba, kandi yoroshye gushyiraho ishobora gukoreshwa mu nkuta zirinda impanuka z'igihe gito cyangwa zihoraho.
Ibisobanuro birambuye ku gicuruzwa
| Ikintu | Ibisobanuro |
| Izina ry'igicuruzwa | Ikirundo cy'icyuma cyo mu bwoko bwa U |
| Igisanzwe | JIS A5528 |
| Ingano y'icyuma | SY295 / SY390 |
| Uburyo bwo gukora | Ishyushye cyane |
| Imiterere | Ubwoko bwa U / Ubwoko bwa Larssen |
| Ubugari | mm 400 / mm 600 / mm 750 |
| Uburebure | Hafi mm 100–225, bitewe n'imiterere |
| Ubunini | Hafi mm 9.4–23.5, bitewe n'imiterere |
| Uburebure | metero 6, metero 9, metero 12, metero 15, metero 18, byahinduwe |
| Interlock | Interlock ya Larssen ishyushye cyane |
| Ubuso | Gusoza urusyo / Gusiga irangi ryabugenewe |
| Igenzura | MTC, igenzura ry'ibipimo, igenzura ry'uruhande rwa gatatu |
| Gutunganya | Gukata, gukubita, gusudira no gutunganya ibintu mu buryo bwihariye |
Imiterere y'ibinyabutabire by'icyuma
| Ingano y'icyuma | C (%) | Si (%) | Mn (%) | P (%) | S (%) |
| SY295 | ≤0.20 | ≤0.35 | ≤1.50 | ≤0.030 | ≤0.030 |
| SY390 | ≤0.20 | ≤0.35 | ≤1.50 | ≤0.030 | ≤0.030 |
Imiterere nyayo y'imiti ishobora gutandukana bitewe n'ibipimo byemewe by'umusaruro w'uruganda n'ibisabwa na JIS. Agaciro ka nyuma kagomba kwemezwa naIcyemezo cy'ikizamini cy'inganda (MTC).
Imiterere y'ibikoresho by'icyuma bicukura amabati
| Ingano y'icyuma | Imbaraga z'umusaruro (MPa) | Imbaraga zo Gukurura (MPa) | Uburebure (%) |
| SY295 | ≥295 | ≥450 | ≥18 |
| SY390 | ≥390 | ≥490 | ≥17 |
Ingano ni ibikenewe bisanzwe ku mirundo y'icyuma gishyushye cya JIS A5528. Imiterere ya nyuma ya mekanike igomba kwemezwa n'ibipimo ngenderwaho bya JIS naIcyemezo cy'ikizamini cy'inganda (MTC).
Ingano y'urukingo rw'icyuma
| agace | Ingano | Agace k'Ibice | Misa | Agahe gato ubunebwe | Modulus by'igice | |||
| Ubugari | Uburebure | Ubunini | Ikirundo | Urukuta | ||||
| w | h | t | ||||||
| mm | Mm | mm | cm2/umugozi | kg/m | kg/m2 | cm4/m | cm3/m | |
| ⅠA | 400 | 85 | 8 | 45.21 | 35.5 | 88.8 | 4500 | 529 |
| Ⅱ | 400 | 100 | 10.5 | 61.2 | 48 | 120 | 8740 | 874 |
| Ⅲ | 400 | 125 | 13 | 76.4 | 60 | 150 | 16800 | 1340 |
| ⅢA | 400 | 150 | 13.1 | 74.4 | 58.4 | 146 | 22800 | 1520 |
| Ⅳ | 400 | 170 | 15.5 | 97 | 76.1 | 190 | 38600 | 2270 |
| ⅤL | 500 | 200 | 24.3 | 133.8 | 105 | 210 | 63000 | 3150 |
| ⅥL | 500 | 225 | 27.6 | 153 | 120 | 240 | 86000 | 3820 |
| ⅡW | 600 | 130 | 10.3 | 78.7 | 61.8 | 103 | 13000 | 1000 |
| ⅢW | 600 | 180 | 13.4 | 104 | 81.6 | 136 | 32400 | 1800 |
| ⅣW | 600 | 210 | 18 | 135.3 | 106 | 177 | 56700 | 2700 |
| Igice | Ingano | Misa | Igihe cyo gutinda | Moduli y'igice | ||||
| Ubugari | Uburebure | Ubunini | Kuri buri mukingo | Urukuta | ||||
| w | h | t | s | |||||
| mm | mm | mm | mm | kg/m | kg/m2 | cm4/m | cm3/m | |
| Ubugari bwa mm 750 | ||||||||
| GHU 14 | 750 | 408 | 10.0 | 8.3 | 77.9 | 104 | 28 690 | 1 415 |
| GHU 16 | 750 | 411 | 11.5 | 9.3 | 86.3 | 115 | 32 860 | 1 610 |
| GHU 18 | 750 | 441 | 10.5 | 9.1 | 88.5 | 118 | 39 310 | 1 790 |
| GHU 20 | 750 | 444 | 12.0 | 10.0 | 96.9 | 129 | 44 450 | 2 010 |
| GHU 23 | 750 | 447 | 13.0 | 9.5 | 102.1 | 136 | 50 710 | 2 280 |
| GHU 25 | 750 | 450 | 14.5 | 10.2 | 110.4 | 147 | 56 250 | 2 510 |
| Ubugari bwa mm 600 | ||||||||
| GHU 12 | 600 | 360 | 9.8 | 9.0 | 66.1 | 110 | 21 610 | 1 210 |
| GHU 12S | 600 | 360 | 10.0 | 10.0 | 71.0 | 118 | 22 670 | 1 270 |
| GHU 18-1 | 600 | 430 | 10.2 | 8.4 | 72.6 | 121 | 35 960 | 1 680 |
| GHU 18 | 600 | 430 | 11.2 | 9.0 | 76.9 | 128 | 38 660 | 1 810 |
| GHU 18+1 | 600 | 430 | 12.2 | 9.5 | 81.1 | 135 | 41 330 | 1 930 |
| GHU 22-1 | 600 | 450 | 11.1 | 9.0 | 81.9 | 137 | 46 390 | 2 070 |
| GHU 22 | 600 | 450 | 12.1 | 9.5 | 86.1 | 144 | 49 470 | 2 210 |
| GHU 22+1 | 600 | 450 | 13.1 | 10.0 | 90.4 | 151 | 52 520 | 2 345 |
| GHU 28-1 | 600 | 452 | 14.2 | 9.7 | 97.4 | 162 | 60 590 | 2 690 |
| GHU 28 | 600 | 454 | 15.2 | 10.1 | 101.8 | 170 | 64 470 | 2 850 |
| GHU 28+1 | 600 | 456 | 16.2 | 10.5 | 106.2 | 177 | 68 390 | 3 010 |
| GHU 32-1 | 600 | 452 | 18.5 | 10.6 | 109.9 | 183 | 69 220 | 3 075 |
| GHU 32 | 600 | 452 | 19.5 | 11.0 | 114.1 | 190 | 72 330 | 3 210 |
| GHU 32+1 | 600 | 452 | 20.5 | 11.4 | 118.4 | 197 | 75 410 | 3 350 |
| Ubugari bwa mm 600 na mm 400 | ||||||||
| GHU 6N | 600 | 309 | 6.0 | 6.0 | 41.9 | 70 | 9 680 | 635 |
| GHU 7N | 600 | 310 | 6.5 | 6.4 | 44.1 | 74 | 10 460 | 685 |
| GHU 7S | 600 | 311 | 7.2 | 6.9 | 46.3 | 77 | 11 550 | 750 |
| GHU 7HWS | 600 | 312 | 7.3 | 6.9 | 47.4 | 79 | 11 630 | 755 |
| GHU 8N | 600 | 312 | 7.5 | 7.1 | 48.5 | 81 | 12 020 | 780 |
| GHU 8S | 600 | 313 | 8.0 | 7.5 | 50.8 | 85 | 12 810 | 830 |
| GHU 10N | 600 | 316 | 9.0 | 6.8 | 55.8 | 93 | 15 710 | 1000 |
| GHU 11N | 600 | 318 | 10.0 | 7.4 | 60.2 | 100 | 17 460 | 1 105 |
| GHU 12N | 600 | 320 | 11.0 | 8.0 | 64.6 | 108 | 19 230 | 1 230 |
| GHU 13N | 600 | 418 | 9.0 | 7.4 | 59.9 | 100 | 26 600 | 1 280 |
| GHU 14N | 600 | 420 | 10.0 | 8.0 | 64.3 | 107 | 29 420 | 1 410 |
| GHU 15N | 600 | 422 | 11.0 | 8.6 | 68.7 | 115 | 32 270 | 1 540 |
| GHU 16N | 600 | 430 | 10.2 | 8.4 | 72.6 | 121 | 35 960 | 1 680 |
| GHU 18N | 600 | 430 | 11.2 | 9.0 | 76.9 | 128 | 38 660 | 1 810 |
| GHU 20N | 600 | 430 | 12.2 | 9.5 | 81.1 | 135 | 41 310 | 1 930 |
| GHU 21N | 600 | 450 | 11.1 | 9.0 | 81.9 | 137 | 46 390 | 2 070 |
| GHU 22N | 600 | 450 | 12.1 | 9.5 | 86.1 | 144 | 49 470 | 2 210 |
| GHU 23N | 600 | 450 | 13.1 | 10.0 | 90.4 | 151 | 52 520 | 2 345 |
| GHU 27N | 600 | 452 | 14.2 | 9.7 | 97.4 | 162 | 60 590 | 2 690 |
| GHU 28N | 600 | 454 | 15.2 | 10.1 | 101.8 | 170 | 64 470 | 2 850 |
| GHU 30N | 600 | 456 | 16.2 | 10.5 | 106.2 | 177 | 68 390 | 3 010 |
| GHU 31N | 600 | 452 | 18.5 | 10.6 | 109.9 | 183 | 69 220 | 3 075 |
| GHU 32N | 600 | 452 | 19.5 | 11.0 | 114.1 | 190 | 72 330 | 3 210 |
| GHU 33N | 600 | 452 | 20.5 | 11.4 | 118.4 | 197 | 75 420 | 3 350 |
| GHU 16-400 | 400 | 290 | 12.7 | 9.4 | 62.0 | 155 | 22 600 | 1 570 |
| GHU 18-400 | 400 | 292 | 15.0 | 9.7 | 69.3 | 173 | 26 100 | 1 795 |
| Igice | Ingano | Misa | Igihe cyo gutinda | Moduli y'igice | ||||
| Ubugari | Uburebure | Ubunini | Kuri buri mukingo | Urukuta | ||||
| w | h | t | s | |||||
| mm | mm | mm | mm | kg/m | kg/m2 | cm4/m | cm3/m | |
| GHL 600 | 600 | 150 | 9.5 | 9.5 | 56.4 | 94 | 3825 | 510 |
| GHL 600K | 600 | 150 | 10 | 10 | 59.4 | 99 | 4050 | 540 |
| GHL 601 | 600 | 310 | 7.5 | 6,4 | 46.8 | 78 | 11520 | 745 |
| GHL 602 | 600 | 310 | 8.2 | 8 | 53.4 | 89 | 12870 | 830 |
| GHL 603 | 600 | 310 | 9.7 | 8.2 | 64.8 | 108 | 18600 | 1200 |
| GHL 603K | 600 | 310 | 10 | 9 | 68.1 | 113.5 | 19220 | 1240 |
| GHL 603 10/10 | 600 | 310 | 10 | 10 | 69.6 | 116 | 19530 | 1260 |
| GHL 604 | 600 | 380 | 10 | 9 | 73.8 | 123 | 30400 | 1600 |
| GHL 605 | 600 | 420 | 13 | 9.2 | 85.5 | 142.5 | 43890 | 2090 |
| GHL 606 | 600 | 435 | 14.4 | 9.2 | 94.2 | 157 | 54375 | 2500 |
| GHL 607 | 600 | 452 | 19 | 10.6 | 114 | 190 | 72320 | 3200 |
| GHL 703 | 700 | 400 | 9.5 | 8 | 67.5 | 96.4 | 24200 | 1210 |
| GHL 716 | 700 | 440 | 10.2 | 9.5 | 79.9 | 114.2 | 35200 | 1600 |
| GHL 720 | 750 | 450 | 12 | 10 | 96.4 | 128.5 | 45000 | 2000 |
Kuramo Katalogi Yuzuye
Ifunga ry'urukuta rw'icyuma n'imikorere idapfa amazi
Igishushanyo: Ikirundo cy'icyuma gihuza, ubushobozi bwo kwinjira ≤1×10⁻⁷ cm/s
Amerika: Yubahiriza ibipimo ngenderwaho bya ASTM D5887 kugira ngo agakoresho gafashe mu kugabanya amazi munsi y'ingoma.
Aziya y'Amajyepfo y'Uburasirazuba: Amazi yo hasi ashobora kunyura mu bihe by'imvura yo mu turere dushyuha
Uburyo bwo gukora icyuma gikozwe mu mugozi
Ikirundo cy'icyuma cya Royal Steel Group JIS A5528 SY295/SY390 gishyushye gikozwe mu bwoko bwa U gishyushye gikozwe mu kirere gifite imbaraga n'ingano kandi kirwanya ingese.
1. Gutegura ibikoresho fatizo
Guhitamo no kugenzura icyuma gikozwe neza cyangwa icyuma gikozwe neza bihuye n'ibisabwa mu ruganda n'urwego rw'icyuma.
2. Gushyushya
Mu gushyushya, icyuma gishyushya kinyura mu bushyuhe bukwiye kugira ngo kigire impinduka imwe mu gihe cyo gushyushya.
3. Gushyushya no Gutunganya
Ibyuma bizingirwa bishyushye binyuzwa ku gice cy’icyuma kugira ngo bikore icyuma gikozwe mu bwoko bwa U-type sheet pile profile, hamwe n’urushundura rwacyo, flanges, n’ibice bifunganye.
4. Guhuza ibyuma bifunganye
Kuzingira neza cyane bituma izi nguni zifatanye bityo imirundo y'impapuro imwe imwe irashobora gufungirwa hamwe kugira ngo ikore urukuta ruhoraho rw'icyuma gifata.
5. Gukonjesha no Kugorora
Ibirundo by'amabati biragororwa kandi bigakonjeshwa n'amavuta nyuma yo kuzingurura ku rugero rwagenwe rw'ingano n'ubuziranenge.
6. Gukata kugeza ku burebure
Imigozi y'impapuro icibwa ku burebure busanzwe cyangwa bwihariye iyo abakiriya babajije kandi bakabisaba mu mushinga.
7. Igenzura ry'Ubuziranenge
Ibikoresho birangiye bikorerwa ibizamini by’imiterere y’ubuso bw’icyuma n’ibipimo by’icyuma gifunganye. Ibigize imiti n’imiterere y’icyuma birageragezwa.
8. Gushyira ikimenyetso no gupakira
Agapaki kanditseho amakuru ajyanye n'ibicuruzwa nk'urwego, ingano, uburebure n'inomero y'itsinda mbere yo gupakira no kohereza iriba.
Ubuso bw'urukingo rw'icyuma
AmerikaIgitambaro cya :HDG gihuye n'ibipimo ngenderwaho bya ASTM A123, gifite ubugari bwa zinc nibura 0.85 ¥m. Igitambaro cya 3PE kiraboneka nk'uburyo bwo kwirinda. Irangi ryose ry'ubuso rikurikiza amategeko ya RoHS, rigashimangira umutekano w'ibidukikije n'amahame mpuzamahanga yo kohereza ibicuruzwa mu mahanga.
Aziya y'Amajyepfo y'Uburasirazuba: Gushyushya no gusiga amashanyarazi (≥100 μm) hamwe n'ipamba ry'amakara rya epoxy rifite ibyiciro bibiri bitanga ubushobozi bwo kurwanya umunyu mu masaha arenga 5.000, bikaba bikwiye mu turere two mu nyanja dushyuha.
Igenzura ry'Ubuziranenge bw'Umurundo w'Ibyuma
Itsinda rya Royal Steelikomeza kugenzura ubuziranenge kuva ku bikoresho fatizo kugeza ku musaruro wa nyuma waJIS A5528 SY295/SY390 Igikoresho cy'icyuma gishyushye cya U gifite ubwoko bwa U, bishimangira imikorere yizewe y'imiterere n'uburyo ibicuruzwa bihora bihagaze.
Igenzura ry'ibikoresho fatizo- Reba imiterere y'imiti, urwego rw'icyuma, ubushyuhe n'ubwiza bw'ibikoresho mbere yo kubitunganya.
Isesengura ry'ibikubiye mu ruganda rw'ibinyabutabire- Sesengura ibintu by'ingenzi nkaC, Si, Mn, P, naSkugenzura ibisabwa bireba.
Isuzuma rya Mekanike- Gukoraimbaraga zo gutanga umusaruro,imbaraga zo gukururanaibizamini byo kurekuraku manotaSY295naSY390.
Ikizamini cy'Uburebure– Fata ubugari, uburebure, ubunini, uburebure, n'ingano z'ibice byambukiranya ukurikije amahame yemewe.
Ikizamini cyo Kugororoka- Reba uburyo ibintu byose bigororotse n'uburyo ibintu bihinduka kugira ngo akazi gakorwe neza.
Isuzuma rya Interlock– Gerageza imiterere y'urukuta rw'impapuro zifatanye, uko zigomba gukwira ndetse n'imikorere y'urukuta kugira ngo ubone inyubako y'urukuta rw'impapuro zitagira ingaruka.
Ikizamini cy'ubuso– Gerageza niba hari imitumba, hari inenge nyinshi zigenda zihindagurika, imiterere mibi n'izindi nenge zigaragara ku buso.
Kugenzura uburemere n'ingano- Kubara uburemere nyakuri, ingano y'ibicuruzwa n'amabwiriza yo kubitwara mbere yo kubitumiza.
MTC irahari-Impamyabumenyi z'ibizamini by'inganda (MTC)izemeza imiterere y'ibinyabutabire n'iy'imashini.
Igenzura ry'umuntu wa gatatu- Serivisi zo kugenzura serivisi za SGS, BV cyangwa izindi serivisi z’igenzura ry’ikigo cya gatatu zishobora gutegurwa hakurikijwe ibisabwa n’umukiriya/umushinga.
UBUSABIZI
1.Ibyobo byo mu rufatiro:Ikoreshwa nk'inkuta zikomeye zishyigikira urukuta mu gucukura cyane no nk'inkuta z'agateganyo cyangwa zihoraho zirinda urukuta.
2. Cofferdams:Ni nziza cyane mu gukora ahantu ho gukorera hafungiye ku migezi, ku byambu no mu mishinga yo kubaka mu nyanja.
3. Ibyambu n'ibyambu:Bikwiriye inkuta z'aho hantu hatembera, inyubako zo ku nkengero z'inyanja, ishingiro ry'inyanja n'uburinzi bw'inkombe.
4. Kugenzura imigezi n'imyuzure:Ikoreshwa mu kurinda inkuta z'amazi, mu kubungabunga inkombe z'uruzi, no mu gufata amazi.
5. Inkuta z'inyanja n'ubuhanga mu by'inkombe: Imirongo y'impapuro zo mu bwoko bwa SY390 Uishobora gutanga ubufasha buhagije mu mikorere yo mu mazi igoye.
6. Kubaka munsi y'ubutaka:Bikoreshwa mu nzira zo gucukura imiyoboro y'amazi, mu gucukura munsi y'ubutaka cyangwa mu bindi bikoresho byo kubungabunga ubutaka.
Impamvu yo guhitamo Royal Steel Group ku byuma bicukurwamo amabati
1. Guhamya Ubwiza bw'Ibicuruzwa– Imiterere ya shimi, imiterere ya mekanike, ingano, imiterere igororotse, imikorere y’imibanire y’ibintu byose bigenzurwa cyane.
2. Ingano n'uburebure butandukanye– Imiterere isanzwe yo mu bwoko bwa U n'uburebure bwihariye birashobora gutangwa.
3. Guhuza neza cyane– Ingufuri zikozwe neza zitanga uburyo bwo gufata inkuta buhamye kandi buhamye.
4. Inyandiko zuzuye zifite ubuziranenge– MTC, raporo z'igenzura na raporo z'igenzura ry'umuntu wa gatatu ziraboneka iyo ubisabye.
5. Gutunganya ibintu byihariye– Hashingiwe ku bishushanyo mbonera by'umushinga, hashobora gutangwa serivisi zo gukata, gucukura, gusudira, gusiga amarangi n'izindi zo gutunganya.
GUPIKA NO KOHEREZA
Royal Steel Group itanga umutekanogupakira impapuro z'icyuma n'ibisubizo mpuzamahanga byo gutangakurinda imirundo y'impapuro zo mu bwoko bwa JIS A5528 SY295/SY390 U mu gihe cyo kuyitwara, kuyipakira no kuyitwara.
Gupakira mu mapaki– Ibirundo by'amabati bihambiriwe neza n'imishumi y'icyuma ikomeye cyane kugira ngo biterurwe kandi bifashishwe mu buryo bwizewe.
Ingamba zo Kwirinda– Ibikoresho bidapfa amazi n'ibipfunyika bishobora gukoreshwa hakurikijwe imiterere y'ubwikorezi n'ibyo abakiriya bakeneye.
Gushyira ikimenyetso ku murongo– Buri gapfunyika gashobora gushyirwaho ikimenyetso cyaurwego rw'icyuma, imiterere, uburebure, ingano, n'amakuru y'itsindakugira ngo byoroshye kumenya.
Gupakira byihariye– Uburyo bwo gupakira bushobora guhindurwa bitewe n’ubwikorezi bw’amakontenari, amato manini, cyangwa ibisabwa ku mushinga runaka.
Gupakira no kugenzura– Gutunganya uburyo bw’umwuga bwo gupakira ibintu bifasha mu kunoza umwanya w’amakontenari cyangwa ubwato no kugabanya ibyago byo gutwara ibintu.
Kohereza mu buryo bworoshye– Iboneka kurikontineri, ubwato bunini, cyangwa ubundi buryo bwo gutwara abantu ku rwego mpuzamahanga bukwiye.
Kohereza inyandiko– Inyemezabuguzi y'ubucuruzi, urutonde rw'ibipakiye, MTC, icyemezo cy'aho ibintu bikomoka, n'inyandiko z'igenzura bishobora gutangwa hakurikijwe ibisabwa mu gutumiza.
Gutanga serivisi ku isi yose– Dushyigikira kohereza ibicuruzwa kuriibyambu n'ahantu ho kubaka ku isi yose, hamwe n'ibisubizo by'ibikoresho bihuye n'ingengabihe y'umushinga.
Ibibazo Bikunze Kubazwa
Q1: Ni irihe tandukaniro riri hagati ya SY295 na SY390?
A: SY390 ifite imbaraga nkeya zo gutanga umusaruro urenze SY295, bigatuma ikoreshwa mu buryo busaba imbaraga nyinshi z'imiterere.
Q2: Ese ushobora gutanga uburebure bwihariye?
A: Yego. Uburebure busanzwe nka metero 6, metero 9, metero 12, metero 15 na metero 18 burahari, hamwe n'uburebure bwihariye hakurikijwe ibisabwa mu gukora no gutwara.
Q3: Ese ushobora gutanga raporo za MTC na raporo z'igenzura?
A: Yego. Impamyabushobozi zo gupima imashini n'igenzura ry'umuntu wa gatatu bishobora gutegurwa hakurikijwe ibyo umukiriya akeneye.
Q4: Ni hehe imirundo y'icyuma yo mu bwoko bwa U ikunze gukoreshwa?
A: Bikoreshwa cyane mu nkuta zirinda ibidukikije, imyobo y'ifatizo, imihanda y'amabuye, ibyambu, inkuta z'inyanja, imishinga y'imigezi, kurinda imyuzure no gukora ubwubatsi bw'amazi mu mazi.
Q5: Nigute nahitamo ikirundo cy'impapuro gikwiye?
A: Guhitamo bigomba kuzirikana imiterere y'ubutaka, ubujyakuzimu bw'ubucukuzi, umuvuduko w'amazi, igihe cyo kunama, modulus isabwa yo gucukura, uburyo bwo kwangirika, uburyo bwo gushyiraho, n'imiterere y'igihe gito cyangwa ihoraho. Guhitamo imiterere ya nyuma bigomba kwemezwa n'umuhanga mu by'ubwubatsi/ubumenyi bw'isi w'umushinga.












