Te Tātaitanga o ngā Whakaritenga Konukuraiti mō ngā Kaupapa Hanga
He taahiraa nui te tatau i ngā whakaritenga raima i roto i te whakahaere kaupapa hanga. Ko te raima, he rauemi hanga maha ngā whakamahinga, e whakamahia ana i roto i ngā momo hanganga pēnei i ngā turanga, ngā pou, ngā kurupae, me ngā papa. Mā te whakatau tika i ngā whakaritenga raima ka āwhina i te whakamahere rauemi me te tahua kaupapa, tae atu ki te whakarite i te pumau me te haumaru o te hanganga. Ka matapakihia e tēnei tuhinga ngā āhuatanga maha e pā ana ki te tatau i ngā whakaritenga raima mō ngā kaupapa hanga.
1. Te Hiranga o te Tatau i ngā Whakaritenga Konukuraiti
He ranunga whakapakeke o te sima, te onepu, te kirikiri, me te wai te raima. Ka pā nui te kounga me te rahinga o te raima e whakamahia ana ki te pumau me te roa o te whare. Mā te tatau i ngā whakaritenga raima ka tika te whakatau i ngā rahinga rauemi e hiahiatia ana, ka ārai i te korenga, i te nui rawa rānei ka arahi ki ngā utu tāpiri me te whakaroa i te kaupapa. Hei tāpiri, mā ngā tataunga tika ka tautoko hoki i te whakahaere rauemi whai hua me te pai ake o te taiao.
2. Ngā Wāhanga Matua i roto i ngā Tātaitanga Konukuraiti
Hei tatau i ngā whakaritenga tuturu, me whai whakaaro ki ētahi āhuatanga taketake, arā:
– Te Rōrahi o te Hanganga Konukuraiti: Ka tatauhia te rōrahi o te konukuraiti mā te whakarea i te roa, te whānui, me te teitei, te matotoru rānei o te wāhanga hanganga e hangaia ana.
– Ngā Momo Konukuraiti: He maha ngā momo konukuraiti, he rerekē te kaha me te whakamahinga. Ko te kaha o te konukuraiti ka whakaaturia i roto i te MPa (Megapascals) me te K (kg/cm²), hei tauira, ko te kaha pēhi o te konukuraiti K-225 he 225 kg/cm².
– Tauwehe Ngaronga: Ko ngā āhuatanga ngaronga pēnei i te moumou, te whakahekenga rānei, ka whakaarohia hoki hei karo i te korenga o ngā rauemi.
3. Te Tātai i te Rōrahi Konukuraiti
Ko te taahiraa tuatahi ki te tatau i ngā whakaritenga raima ko te tatau i te rōrahi o ia wāhanga hanganga hei hanga. He maha ngā āhua hanganga me ngā wāhanga e kitea whānuitia ana i roto i te hanganga, tae atu ki:
– Tūāpapa: Ko te tātaitanga rōrahi mō te tūāpapa ka whakawhirinaki ki te momo tūāpapa e whakamahia ana. Mō ngā turanga, ka taea te tatau i te rōrahi mā te whakamahi i te tātai:
\[
\text{Rōrahi} = \text{Roa} \times \text{Whānui} \times \text{Teitei}
\]
– Ngā Pou: Mō ngā pou he poraka tapawhā, he poraka tapawhā rānei, ka tatauhia te rōrahi mā te whakamahi i tētahi tātai māmā:
\[
\text{Rōrahi} = \text{Roa} \times \text{Whānui} \times \text{Teitei}
\]
I taua wā, mō ngā pou porotaka, ka tatauhia te rōrahi mā te whakamahi i te tātai:
\[
\text{Rōrahi} = \pi \times \text{Rōrahi}^2 \times \text{Teitei}
\]
– Poraka: Mā te tatau i te rōrahi o tētahi poraka ka whakamahia hoki te tātai taketake:
\[
\text{Rōrahi} = \text{Roa} \times \text{Whānui} \times \text{Teitei}
\]
– Ngā Papa Papa: Mō ngā papa papa, ka taea te tatau i te rōrahi mā te whakamahi i te tātai:
\[
\text{Rōrahi} = \text{Horahanga} \times \text{Matotoru}
\]
4. Te Whakatau i te Momo me te Kounga o te Konukuraiti
He mea nui te whiriwhiri i te momo me te taumata tika o te raima hei whakatutuki i ngā whakaritenga hanganga me ngā whakaritenga mahi o te whare. Ko te kounga o te raima i Indonesia ka whakatauhia i runga i tōna kaha pēhi āhuatanga, pērā i te K-225, K-250, K-300, me ētahi atu. Ko te whiriwhiri i te taumata raima ka whakawhirinaki ki te mahi a te wāhanga hanganga:
– Ko te raima kounga iti (K-125 ki te K-175): He mea whakamahi noa mō ngā mahi kore-hanganga pēnei i ngā papa mahi.
– Raima kounga-waenga (K-200 ki te K-250): Whakamahia mō ngā hanganga kāore e pikau i ngā kawenga taumaha pērā i ngā papa raro, ngā kurupae me ngā pou i roto i ngā whare noho.
– Raima kounga teitei (K-300 me runga ake): Whakamahia mō ngā hanganga e pikau ana i ngā kawenga taumaha pērā i ngā piriti, ngā whare teitei, me ētahi atu hanganga e hiahia ana kia kaha nui.
5. Tauwehenga Ngaronga
I te wā e ringihia ana te raima, ka ngaro pea ētahi rauemi, ka kore rānei e whakamahia pai. Tērā pea nā te rokiroki rauemi hē, ngā tikanga whakaranu koretake, ngā poke rānei e whakaranua ana. Nō reira, he mea nui kia whakatauhia te tauwehenga moumou, e ahu mai ana i te 5% ki te 10% o te rōrahi raima katoa e hiahiatia ana.
6. Tauira o te Tātaitanga mā te Whakamahi i te Akoranga Take
Hei whakarato i tētahi pikitia mārama ake, anei tētahi tauira mō te tatau i ngā whakaritenga raima mō tētahi kaupapa whare noho māmā.
– Te Tūāpapa Tūāpapa:
– Te roa: 1,5 mita
– Whānui: 1,5 mita
– Teitei: 0,5 mita
– Te maha o ngā turanga: 10 ngā wahi
– Te rahinga mō ia turanga:
\[
1,5 \times 1,5 \times 0,5 = 1,125 \, \text{m}^3
\]
– Te rahinga katoa o te turanga:
\[
1,125 \times 10 = 11,25 \, \text{m}^3
\]
- Pou:
– Te roa: 0,3 mita
– Whānui: 0,3 mita
– Teitei: 3 mita
– Te maha o ngā pou: 15
– Te rōrahi mō ia pou:
\[
0,3 \times 0,3 \times 3 = 0,27 \, \text{m}^3
\]
– Te rahinga katoa o te pou:
\[
0,27 \times 15 = 4,05 \, \text{m}^3
\]
– Ngā Pereti Papa:
– Te rahi: 100 mita pūrua
– Matotoru: 0,12 mita
– Te rahinga o te papa:
\[
100 \times 0,12 = 12 \, \text{m}^3
\]
– Te Rōrahi Rakau Katoa:
\[
11,25 + 4,05 + 12 = 27,3 \, \text{m}^3
\]
– Me te whakaaro ki te Tauwehenga Ngaronga (10%):
\[
27,3 \times 0,1 = 2,73 \, \text{m}^3
\]
– Ngā Whakaritenga Rakau Katoa:
\[
27,3 + 2,73 = 30,03 \, \text{m}^3
\]
7. Whakamutunga
He mea nui te tatau i ngā whakaritenga raima i roto i tētahi kaupapa hanga. Mā te tatau i ngā rahinga raima i runga i ngā whakaritenga hanganga me te tāpiri i tētahi tauwehenga mate whaitake, ka taea e ngā kaiwhakahaere kaupapa te whakarite kia whai hua te whakamahinga rauemi, te karo i te para, me te penapena utu. He mea nui anō hoki te whakamahi i te momo me te taumata tika o te raima mō ngā whakaritenga hanganga hei whakarite i te haumaru me te pakari o te whare.
Mā te whakamahere tupato me ngā tātaitanga tika, e tūmanakohia ana ka pai ake te whakahaere me te whai hua o ia kaupapa hanga, kia puta ai ngā hua whakamutunga tino pai, kia tutuki ai hoki ngā whāinga o te hanganga.
