Ka hangaia nga Uwhi Manhole mo te hanga me te whakamahi ma te marea. Ko te puhera he anga me te uhi me te pae kupenga.Ka pai ake te whakamarumaru o te uhi manhole i te haumaru o te hunga hikoi me nga waka, ka pai ake te aukati i te ua me etahi atu wai kia uru mai.Ko nga Uwhi Manhole kia maeneene, kia kore he kohao kirikiri, he kohao pupuhi, he korikori, he aha atu he aha ranei.
Te paninga: bitumen Pango Ka whakawhāitihia ia whakawātea takitahi ki te mōrahi o te 3mm
Kōeke: AA1900KN, AA2 600KN, A1 400KN, A2 230KN, B 125KN, C30KN
Te Kaiwawao Hinu Rino C/W he pae kuiketi taumaha, he pukoro matua me te riaka konumohe.