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Pou detèmine pousantaj grès nan kò a, gen yon metòd trè senp pou mezire epesè grès sou vant lan (nan 10cm sou bò dwat lonbrit la, nan menm wotè a). Anjeneral pou mezire ranpa yo sèvi ak aparèy espesyal la - yon konpa, epi yo rele pwosedi a kalipatri. Konpa a se an reyalite fòs konvansyonèl yo kouvwi ak yon règ. Pou ranplase aparèy sa a li posib nan konpa konvansyonèl yo, oswa menm yon kle 🙂
Se konsa, jwenn pwen sou bò dwat la nan lonbrit la, mezire epesè nan ranpa nan plas sa a (an milimèt). Lè sa a, sèvi ak tablo sa a yo kalkile pousantaj la nan grès nan kò nou an.
Tablo pou kalkile pousantaj grès pa epesè pliye moun:
| Pousantaj grès: | 18 20-ane | 21 25-ane | 26 30-ane | 31 35-ane | 36 40-ane | 41 45-ane | 46 50-ane | 51 55-ane | 56 ane ak pi gran |
| 2-3% | 2.0 mm | 2.5 mm | 3.5 mm | 4.5 mm | 5.6 mm | 6.7 mm | 7.7 mm | 8.8 mm | 9.9 mm |
| 4-5% | 3.9 mm | 4.9 mm | 6.0 mm | 7.1 mm | 8.1 mm | 9.2 mm | 10.2 mm | 11.3 mm | 12.4 mm |
| 6-7% | 6.2 mm | 7.3 mm | 8.4 mm | 9.4 mm | 10.5 mm | 11.5 mm | 12.6 mm | 13.7 mm | 14.7 mm |
| 8-9% | 8.5 mm | 9.5 mm | 10.6 mm | 11.7 mm | 12.7 mm | 13.8 mm | 14.8 mm | 15.9 mm | 17.0 mm |
| 10-11% | 10.5 mm | 11.6 mm | 12.7 mm | 13.7 mm | 14.8 mm | 15.9 mm | 16.9 mm | 18.0 mm | 19.1 mm |
| 12-13% | 12.5 mm | 13.4 mm | 14.6 mm | 15.7 mm | 16.8 mm | 17.8 mm | 18.9 mm | 20.0 mm | 21.0 mm |
| 14-15% | 14.3 mm | 15.4 mm | 16.4 mm | 17.5 mm | 18.6 mm | 19.6 mm | 20.7 mm | 21.8 mm | 22.8 mm |
| 16-17% | 16.0 mm | 17.0 mm | 18.1 mm | 19.2 mm | 20.2 mm | 21.3 mm | 22.4 mm | 23.4 mm | 24.5 mm |
| 18-19% | 17.5 mm | 18.6 mm | 19.6 mm | 20.7 mm | 21.8 mm | 22.8 mm | 23.9 mm | 25.0 mm | 26.0 mm |
| 20-21% | 18.9 mm | 20.0 mm | 21.0 mm | 22.1 mm | 23.2 mm | 24.7 mm | 25.3 mm | 26.4 mm | 27.4 mm |
| 22-23% | 20.2 mm | 21.2 mm | 22.3 mm | 23.4 mm | 24.4 mm | 25.5 mm | 26.6 mm | 27.6 mm | 28.7 mm |
| 24-25% | 21.3 mm | 22.3 mm | 23.4 mm | 24.5 mm | 25.6 mm | 26.6 mm | 27.7 mm | 28.7 mm | 29.8 mm |
| 26-27% | 22.3 mm | 23.3 mm | 24.4 mm | 25.5 mm | 26.5 mm | 27.6 mm | 28.7 mm | 29.7 mm | 30.8 mm |
Tablo pou kalkile pousantaj grès la pa epesè ranpa yo nan fanm yo:
| Pousantaj grès: | 18 20-ane | 21 25-ane | 26 30-ane | 31 35-ane | 36 40-ane | 41 45-ane | 46 50-ane | 51 55-ane | 56 ane ak pi gran |
| 2-3% | 11.3 mm | 11.9 mm | 12.5 mm | 13.2 mm | 13.8 mm | 14.4 mm | 15.0 mm | 15.6 mm | 16.3 mm |
| 4-5% | 13.5 mm | 14.2 mm | 14.8 mm | 15.4 mm | 16.0 mm | 16.7 mm | 17.3 mm | 17.9 mm | 18.5 mm |
| 6-7% | 15.7 mm | 16.3 mm | 16.9 mm | 17.6 mm | 18.2 mm | 18.8 mm | 19.4 mm | 20.0 mm | 20.7 mm |
| 8-9% | 17.7 mm | 18.4 mm | 19.0 mm | 19.6 mm | 20.2 mm | 20.8 mm | 21.5 mm | 22.1 mm | 22.7 mm |
| 10-11% | 19.7 mm | 20.3 mm | 20.9 mm | 21.5 mm | 22.2 mm | 22.8 mm | 23.4 mm | 24.0 mm | 24.6 mm |
| 12-13% | 21.5 mm | 22.1 mm | 22.7 mm | 23.4 mm | 24.0 mm | 24.6 mm | 25.2 mm | 25.9 mm | 26.5 mm |
| 14-15% | 23.2 mm | 23.8 mm | 24.5 mm | 25.1 mm | 25.7 mm | 26.3 mm | 26.9 mm | 27.6 mm | 28.2 mm |
| 16-17% | 24.8 mm | 25.5 mm | 26.1 mm | 26.7 mm | 27.3 mm | 27.9 mm | 28.6 mm | 29.2 mm | 29.8 mm |
| 18-19% | 26.3 mm | 27.0 mm | 27.6 mm | 28.2 mm | 28.8 mm | 29.4 mm | 30.1 mm | 30.7 mm | 31.3 mm |
| 20-21% | 27.7 mm | 28.4 mm | 29.0 mm | 29.6 mm | 30.2 mm | 30.8 mm | 31.5 mm | 32.1 mm | 32.7 mm |
| 22-23% | 29.0 mm | 29.6 mm | 30.3 mm | 30.9 mm | 31.5 mm | 32.1 mm | 32.8 mm | 33.4 mm | 34.0 mm |
| 24-25% | 30.2 mm | 30.8 mm | 31.5 mm | 32.1 mm | 32.7 mm | 33.3 mm | 34.0 mm | 34.6 mm | 35.2 mm |
| 26-27% | 31.3 mm | 31.9 mm | 32.5 mm | 33.2 mm | 33.8 mm | 34.4 mm | 35.0 mm | 35.6 mm | 36.3 mm |