Uhi a me ka Po'i

ʻO ka wehewehe pōkole:

Hana ʻia nā uhi manhole no ke kūkulu ʻana a me ka hoʻohana ʻana i ka lehulehu. ʻO ka manhole i loko o kahi kiʻi a me kahi uhi a / a i ʻole kahi pahu.Hiki i ka uhi manhole ke pale maikaʻi i ka palekana o nā mea hele wāwae a me nā kaʻa, a hiki ke pale maikaʻi i ka ua a me nā wai ʻē aʻe mai ke komo ʻana.Pono nā uhi Manhole e maʻemaʻe a ʻaʻohe lua one, puka puhi, ʻākee a i ʻole nā ​​mea ʻino ʻē aʻe.

Ka uhi: ʻeleʻele bitumen Ua kaupalena ʻia kēlā me kēia ʻae ʻana i ka 3mm kiʻekiʻe loa

Papa: AA1900KN, AA2 600KN, A1 400KN, A2 230KN, B 125KN, C30KN