Izithiyo zokuphahlazeka ziyizicingo ezifakwe phakathi noma zombili izinhlangothi zomgwaqo ukuvimbela izimoto ukuthi zingaphumi emgwaqweni noma ziwele phakathi nendawo ukuze kuvikelwe ukuphepha kwezimoto nabagibeli.
Umthetho wemigwaqo yezwe lethu unezidingo ezintathu eziyinhloko zokufakwa kwezivikelo zokuvikela ukungqubuzana:
(1) Ikholomu noma umugqa wokuvikela we-crash guardrail kufanele ihlangabezane nezidingo zekhwalithi. Uma usayizi wayo ungahlangabezani nezidingo, ubukhulu bengqimba ye-galvanized abwanele, futhi umbala awufani, kungenzeka kakhulu ukuthi ibangele izingozi zomgwaqo.
(2) I-guardrail yokulwa nokushayisana kufanele ifakwe i-staked out nomugqa ophakathi womgwaqo njenge-benchmark. Uma ingaphandle lehlombe lomgwaqo womhlaba lisetshenziswa njengereferensi ye-stakeout, kuzothinta ukunemba kokulungiswa kwekholomu (ngoba umbhede womgwaqo womhlaba awukwazi ukufana ngobubanzi ngesikhathi sokwakhiwa). Ngenxa yalokho, ukulungiswa kwekholomu kanye nesiqondiso somzila akuhlanganisi, okuthinta ukuphepha kwezimoto.
(3) Ukufakwa kwekholomu ye-crash guardrail kufanele kuhlangabezane nezidingo zekhwalithi. Indawo yokufaka yekholomu kufanele ihambisane ngokuqinile nomdwebo womklamo kanye nendawo yokuphakamisa, futhi kufanele ihambisane nokulungiswa komgwaqo. Lapho indlela yokumba isetshenziswa ukumboza amakholomu, ukufakwa kwe-backfill kufanele kuhlanganiswe ngezendlalelo ngezinto ezinhle (ubukhulu bengqimba ngayinye akumele kudlule u-10cm), futhi izinga lokuqiniswa kwe-backfill akufanele libe ngaphansi kwenhlabathi engaphazanyiswa eseduze. Ngemva kokufakwa kwekholomu, sebenzisa i-theodolite ukuze uyilinganise futhi uyilungise ukuqinisekisa ukuthi umugqa uqondile futhi ubushelelezi. Uma ukulungiswa kungenakuqinisekiswa ukuthi kuqondile futhi kubushelelezi, kuzothinta ukuphepha komgwaqo ngokungenakugwenywa.
Uma ukufakwa kwesithiyo sokuphahlazeka kungajabulisa iso, kuzothuthukisa kangcono induduzo yokushayela futhi kunikeze abashayeli isiqondiso esihle sokubona, ngaleyo ndlela kunciphise ngempumelelo ukwenzeka kwezingozi nokulahlekelwa okubangelwa yizingozi.
Isikhathi sokuthunyelwe: Feb-11-2022
