WHAT VOLUME DO YOU REQUIRE?  

                                                                                                                                                       ⇓                                                                                                                                                                                                                  

MATERIAL REQUIREMENT CALCULATOR                                                                                                                                        YOU NEED

DEPTH

5cm(2″)
7.5cm (3″)
10cm(4″)
12.5cm(5″)
15cm(6″)
20cm(8″)
25cm(10″)
 
AREA TO COVER (SQUARE METRES)
CUBIC METRES
20
13
10
8
7
5
4
         1
40
27
20
16
13
10
8
         2
60
40
30
24
20
15
12
         3
80
53
40
32
27
20
16
         4
100
67
50
40
33
25
20
         5
120
80
60
48
40
30
24
         6
140
93
70
56
47
35
28
        7
160
107
80
64
53
40
32
         8
180
120
90
72
60
45
36
        9
200
133
100
80
67
50
40
       10