He aha nga hangarau teitei e whakamahia ana mo te hanga ngongo pepa?

Ko te tauira whaipainga e whakaatu ana i te raina whakaputa ngongo pepa, e whai ana ki te whakarato i tetahi raina whakaputa ngongo pepa ka taea te whakapai ake i te kounga tapahi o te riu mowhiti tapahi ngongo pepa. Ko te kaupapa matua o tana kaupapa hangarau ko te raina whakaputa he taputapu tapahi mo te tapahi i te porowhita o waho o te rango pepa, me te raina whakaputa he taputapu hinu mo te hinu i te waahanga tapahi o te. ngongo pepa i mua i te taputapu tapahi.Ko te waahanga tapahi o te ngongo pepa ka hinuhia e te taputapu hinu. 

I muri i te hinu, ko te waahanga tapahi o te Ko te ngongo pepa he makuku etahi, na te mea he micropores te pepa angiangi kei te mata o te ngongo pepa. Ina whakamakuku te hinu, te wai ranei i te pepa, ka whakakiia nga micropores o te pepa ki te hinu. A, no te tapahi te kaitapahi, ka pakaru te muka o te pepa angiangi makuku, he ahua papatahi te mata o te mutunga, a kaore te muka e peia e te hurihanga hurihuri o te kaitapahi, kia kore ai te pepa angiangi e korukoru, ka haehae ranei, Ka pai ake te kounga o te hua.