Impera yanyuma ni ugukurikiza AASHTO M180, GB-T 31439.1-2015 na EN1317.
Ibikoresho kubyo ahanini ni Q235B (S235Jr imbaraga zumusaruro zirenga 235Mpa) na Q345B (S355Jr imbaraga zumusaruro zirenze 345Mpa).
Kubwubugari bwa terefone irangira cyane cyane binyuze muri 2.5mm kugeza kuri 4.0mm cyangwa gukurikiza ibyo abakiriya bakeneye.
Kuvura hejuru birashyushye cyane, kugirango ukurikire AASHTO M232 hamwe nuburinganire buringaniye nka AASHTO M111, EN1461 nibindi.
Impera yanyuma itangirira ku ntangiriro no kurangiza umuhanda.Irashobora kurinda abantu bafite icyuma kigoramye, kugirango igabanye ibikomere biturutse ku izamu.