Ukubonisa umlingani
1. Ukusebenza kokungangeni manzi okungaphezu kuka-5,000 mmH2O ngaphansi kwezindinganiso zaseMelika (ASTM).
2. Ukuphefumula okungaphezu kuka-5,000 g/24h m2 ngaphansi kwezindinganiso zaseMelika (ASTM).
3. Yonke imithungo iboshwe ngetheyiphu.
4. Amaphakethe emaphethelweni angenazihlanganisi aneziphuphu ezingangeni manzi.