He rerekē ngā whakaritenga o te whitiki whitiki PET (Polyester) i runga i te whakamahinga (takai mama, takai waenga, takai taumaha rānei). Kei raro nei ngā tawhā hangarau matua me ngā whakaritenga noa:
1. Rauemi me ngā Āhuatanga
- Rauemi: Polyethylene Terephthalate (PET)
- Toronga: 2% – 3% (he iti te totoro, he tino pai mō te pumau o te kawenga)
- Kaha Kume: 300 MPa – 800 MPa (kaha ake i te whitiki PP me te maitai i ētahi wā)
- Te Pāmahana Mahi: -40°C ki te +85°C (ātete ki te wera, he pai mō ngā āhuatanga kino)
- Ātete ki te UV: Tino pai (he pai mō te rokiroki o waho)
- Ātete makuku: Ārai wai, kāore e waikura, kāore hoki e pirau
- Ka taea te hangarua: He pai ki te taiao, ka taea te whakamahi anō
2. Ngā Rahi Noa (Whānui me te Matotoru)
| Whānui (mm/inihi) | Matotoru (mm) | Kaha Pakaru (kN) | Te Whakamahinga Noa |
|---|---|---|---|
| 9 mm (3/8″) | 0.6 – 0.8 mm | 2.5 – 4.0 kN | Ngā takai māmā, ngā kātene |
| 12 mm (1/2″) | 0.7 – 1.0 mm | 3.5 – 6.0 kN | Pūtāhui mahi-waenga |
| 15 mm (5/8″) | 0.8 – 1.2 mm | 5.0 – 8.0 kN | Ngā papa taumaha, ngā pereki |
| 19 mm (3/4″) | 1.0 – 1.5 mm | 7.0 – 12.0 kN | Ngā koiri rino, te rakau, te hanganga |
| 25 mm (1″) | 1.2 – 1.8 mm | 10.0 – 20.0 kN | Ngā kawenga taumaha rawa |
3. Ngā Kōwhiringa Tae
- Paerewa: Pango, Kakariki, Mā, Mārama
- Ritenga: E wātea ana i roto i ngā tae rerekē (hei tauira, kikorangi, whero, kōwhai) mō te waehere, te waitohu rānei
4. Te roa o te takai me te rōra
- Te Roa o te Rōra: Ko te tikanga he 500m, 1000m, he roa ritenga rānei
- Diameter Matua: 200mm, 300mm (paerewa)
- Taumaha mō ia Rōra: Kei te whānui me te matotoru (hei tauira, 12mm x 1000m ≈ 8-12 kg)
5. Ngā Tikanga Hononga
- Ngā Utauta Hiri: Te hanumitanga wera (te mea tino noa), ngā hiri whakarewa, kirihou rānei, ngā raka whitiki
- Ngā Utauta Hototahi: Ngā whakapūmau ā-ringa, ngā taputapu here hau, ngā mīhini aunoa
6. Ngā Painga Matua me ērā atu Momo Whitiki
| Āhuatanga | Herenga PET | Whitiki PP | Herenga Rino |
|---|---|---|---|
| Kaha | Teitei (300-800 MPa) | Waenga (200-400 MPa) | Tino Teitei (600-1000 MPa) |
| Te whakaroa | Iti (2-3%) | Teitei (10-25%) | Tino Iti (<1%) |
| Taumaha | Mārama | Tino Māmā | Taumaha |
| Waikura | No | No | Āe (waikura) |
| Utu | Waenga | Iti | Teitei |
7. Ngā Taupānga Noa
✔ Te Whakahaere me te Tukunga (hiri kātene, tākai papa)
✔ Hanganga (pereki, rakau, rebar)
✔ Ngā Ahumahi Whakarewa me te Pepa (ngā koiri maitai, ngā rōra pepa)
✔ Ahuwhenua (ngā pēke tarutaru, ngā putea tongi)
✔ Tākai Kaweake (ātete makuku, pakari)
