Sertifikasi
Sistem Rangka Atap
Sistem Rangka Atap
1. Jarak reng maksimum 45 cm |
| 2. Antar overlap 20 cm (10 cm - 10 cm) |
| 3. Jarak antar lembaran 1 gelombang |
| 4. 18 buah paku tuap lembar (9-3-3-3) |
| 5. Jarak maksimum overhang 7 cm |
