Carat XXL underground tank Available in sizes 16,000L – 122,000L
Multi- Purpose: specifically developed for rainwater harvesting for use as a retention, firefighting, treated water, or septic tank system.
Higher Capacity: available in sizes from 16,000L to 122,000L. Standard “off the shelf” sizes are available up to 52,000L, with customised options available to 122,000L – just contact us!
Lightweight: lighter than an equal tank made from concrete or steel.
Multiple Access Domes: available for varying configurations.
Lid Options: pedestrian, class B or D loading with grated options.
Ladders: access ladders available.
Warranty: GRAF Carat XXL tanks are supported by a 15-year manufacturers’ warranty.
Volume (I)
Length (mm)
Width (mm)
Height (mm)
Weight (kg)
16,000 L
4725
2500
2550 – 3160
780
22,000 L
6250
2500
2550 – 3160
1060
26,000 L
7150
2500
2550 – 3160
1140
28,000 L
7775
2500
2550 – 3160
1340
32,000 L
8675
2500
2550 – 3160
1420
36,000 L
9575
2500
2550 – 3160
1500
38,000 L
10200
2500
2550 – 3160
1700
42,000 L
11100
2500
2550 – 3160
1780
46,000 L
12000
2500
2550 – 3160
1860
48,000 L
12625
2500
2550 – 3160
2060
52,000 L
13525
2500
2550 – 3160
2140
Technical details
Accessibility
Earth covering with loading capacity [mm]800 – 1500
max. axle load [t]13.5
max. vehicle weight [t]40
max. vehicle weight with reinforced concrete slab [t]60
Groundwater installation
Earth covering with groundwater installation [mm]800 – 1500
