Calcolatore Ghiaia Drenante Gratuito
Calcola il fabbisogno di ghiaia per trincee drenanti e tubazioni di drenaggio.
ft
in
in
in
Gravel Needed
2.6 cu yd
Peso Approssimativo3.7 tons
Total Trench Volume75.0 cu ft
Gravel Needed vs Trench Length
Formula
## Drainage Gravel Calculation **Gravel Volume = Trench Volume - Pipe Volume** The perforated pipe displaces some of the trench volume. Subtract its cross-sectional area multiplied by the trench length to get the net gravel volume. Use washed, angular gravel (3/4 to 1-1/2 inch) for good drainage.
Esempio Risolto
50 ft French drain, 12 in wide, 18 in deep, with 4-inch pipe.
- 01Trench volume = 50 x 1 x 1.5 = 75 cu ft
- 02Pipe volume = 50 x pi x (2/12) squared = 2.18 cu ft
- 03Gravel = (75 - 2.18) / 27 = 2.7 cu yd
- 04Weight = 2.7 x 1.4 = 3.8 tons