91.140.80 Drainage systems / Дренажные системы, 91.060.20 Roofs. Including related elements (gutters, etc.) / Крыши
Ключевые слова:
Design|Verification|Circular shape|Waste-water drainage|Rainwater control systems|Installation|Drainage|Buildings|Maintenance|Mathematical calculations|Rainwater pipes|Water supply and waste systems (building|Gutters