Ukusetshenziswa kwamapayipi kathayela ensimbi kubunjiniyela bomgwaqo omkhulu kuletha izinzuzo ezibalulekile.

Amapayipi kathayela, abalulekile emigwaqweni engaphansi emigwaqweni emikhulu nojantshi, afaka idizayini esezingeni elikhuthaza ukukhiqizwa okuphumelelayo, okuphakathi nendawo okunomugqa wesikhathi wokukhiqiza osheshayo. Inqubo yokufaka ingenzeka ngokuzimela, inciphise ubude besikhathi sokwakha kuyilapho inciphisa ukuthembela ezintweni zokwakha ezivamile, ngaleyo ndlela ithuthukise ukusimama kwemvelo. Ngaphezu kwalokho, lawa mapayipi angakwazi ukwamukela ukuguqulwa kwesisekelo futhi asabalalise amandla ngokuphumelelayo, ukunciphisa izingozi ezihlobene nokuhlaliswa okungalingani nokuvikela izakhiwo eziqinile zikakhonkolo emonakalweni-ikakhulukazi ezindaweni ezibandayo.

Izinsimbi zensimbi ezihlanganisiwe ziza ngezindlela ezihlukahlukene: i-arch, i-circular, ne-horseshoe. Okuhlukile ngakunye kufeza izidingo ezithile zobunjiniyela.

Ucwaningo lubonisa ukuthi ukuvuthela kwensimbi okuphathwe kahle kungafinyelela impilo yesevisi engaphezu kweminyaka eyi-100, ngenxa yokufaka uthayela nokuvikela ukugqwala okukhethekile kwe-asphalt. Isakhiwo sisebenzisa i-Q235-I-hot-rolled steel plate, exhuma amaphaneli ensimbi amaningi engxenyeni ehlanganisiwe, elandelwa ukuxhuma kwe-longitudinal nokubunjwa. Amabhawodi aqine kakhulu (ibanga le-M 208.8) namawasha agobile (ibanga le-HRC35) avikela ukuxhumana, kuyilapho indawo enamanzi ediphu eshisayo imelana nokugqwala. Isisekelo se-culvert ngayinye sinombhede wetshe owu-50-100 cm ekuhlanganisweni okungama-95%, kanye ne-M7.5 slurry masonry esetshenziselwa ukugcwaliswa kwembobo. Ukugeleza kwamanzi kugoba ngaphakathi kwe-culvert ngokuvamile kukala u-5%. Ngaphandle komumo ohamba phambili, ama-culverts afaka nezinhlobo ze-elliptical kanye ne-flanged, ezinemithambeka eseceleni engenziwa ngendlela oyifisayo ukwakheka kokungena nokuphumayo.

Ububanzi bohlelo lokusebenza buhlanganisa izimo ezahlukahlukene:
- Rapid Passage Projects
- Imigwaqo Eyingozi Enezintaba
- Ukuphambana Kwabahamba Ngezimoto
- Ukugcwalisa Okuphezulu Ezifundeni Ezinezintaba
- Izindawo Eziqandisiwe kanye Nokugcwalisa Okuphakeme
- Ama-Shallow Fills Okufinyelela Imfuyo
- AmaConduits asemadolobheni naseField
- Agricultural Irrigation
- Izingosi ze-Heavy Hill
- Izindawo Eziqandisiwe Ezijulile Nezingashoni
- Imigede yezimayini zamalahle
- Izindawo Zokugcwalisa Okuphezulu Ekulahlekelweni Kokucindezeleka Okumanzi
- Izixazululo Zokushintshwa Kwamabhuloho Amancane
- Igcwalisa Okuphezulu Ku-Loes Egcwele Ngamandla Okuthwala Okuphansi