He aha te kereini e whakamahia ana mō te whakarewa i ngā pira?

I roto i ngā rāngai hanga me te miihini, he mea tino nui te whakahaere tika me te haumaru o ngā rauemi taumaha. Ko tētahi o ngā mahi tino nui i roto i te hanganga piriti me ngā kaupapa hanganga nui ko te whakarewatanga o ngā piira. Mō tēnei kaupapa, ka whakamahia he taputapu motuhake e mōhiotia ana ko te kerēni piira whakarewa.

He kerēne whakarara whakarewahe mea hanga motuhake hei hiki me te whakanoho i ngā taura nui, he wāhanga nui ēnei i roto i te hanganga o ngā piriti me ngā arawhata. Kua hangaia ēnei kerene hei whakahaere i ngā wero ahurei e pā ana ki te whakarewatanga o ngā taura, tae atu ki te hiahia kia tika te whakanoho me te kaha ki te mahi i roto i ngā wāhi kuiti. Ko te hoahoa o te kerene taura whakarewa he whānui te toronga me te kaha hiki pakari, e taea ai e ia te neke ngāwari i ngā taura taumaha ki tōna tūranga.

He maha ngā mahi matua mō te whakahaere i tētahi kerēne whakarewa. Tuatahi, ka whakanohoia te kerēne ki te papa hanga, he maha ngā wā i runga i tētahi papaaho rangitahi, i tētahi ara rānei. Kia oti te whakanoho, ka whakamahia te tikanga hiki o te kerēne hei hiki i te kerēne mai i tōna tūranga kawe. Me āta whakahaere e te kaiwhakahaere kerēne te nekehanga o te kerēne kia tika ai te tūnga ki ngā hanganga tautoko. Me whai pūkenga me te mahi tahi tēnei, nā te mea ka taea e tētahi hē te tūnga te arahi ki ngā whakaroa nui me ngā tūponotanga haumaru.

Haunga ngā kerēne whakarewa tuku iho, kei reira anō ngā momo rerekētanga pērā i te whakarewa cantilever, he mea tino whai hua mō te whakarewa i ngā kerēne ki runga i ngā hanganga, i ngā arai rānei o nāianei. He hangarau matatau ēnei kerēne, tae atu ki ngā pūnaha whakahaere mamao me ngā āhuatanga aunoa, hei whakarei ake i te haumaru me te whai huatanga i te wā e whakarewahia ana.

Hei whakamutunga, he taputapu tino nui te kerēne whakarewa i roto i te umanga hanga, i hangaia mō te whakarewatanga haumaru me te whai hua o ngā kerēne. Nā ōna āhuatanga me ōna āheinga motuhake, koinei te whiringa matua mā ngā miihini me ngā kaimahi kirimana e uru ana ki ngā kaupapa hanganga nui.