Ukubonisa umlingani
1. Ukusebenza okungangeni manzi okungaphezu kuka-5,000 mmH2O ngaphansi kwezindinganiso zaseMelika (ASTM).
2. Ukungena komoya okungaphezu kuka-5,000 g/24h m2 ngaphansi kwezindinganiso zaseMelika (ASTM).
3. Yonke imithungo iqiniswe ngomthofu.
4. Amaphakethe anomthungo ongabonakaliyo anezikhiyezi ezingangeni manzi.