2. Melro
  3. 4500L Underground Tank Garden Yard

Melro 4500L Underground Tank Garden Yard User manual

  • Hello! I've reviewed the provided document which details instructions for installing Melro underground tanks, specifically the 2500L, 3500L, 4500L, and 5500L models, in garden and yard settings with pedestrian traffic. The document provides details regarding installation requirements, including backfill, site condition limitations, and important notes for ensuring a proper and safe setup. Feel free to ask any questions you have about these instructions.
  • What is the maximum weight allowed on the soil above the tank?
    What type of backfill should be used?
    What is the maximum soil depth?
    What should be done before backfilling around the tank?
G
G
200
50
1150 Depth
Backfill compacted every 250mm
Compacted Sand 50mm
Sand
Backfill
Length
2260 Width
250
250 250
250
Scenario A - Garden/Yard (Soil Top)
Pedestrian (250KG Max)
Installation Note:
The Tank must be installed on a smooth flat surface.
The excavation must be free of water.
Before filling with backfill, fully fill tank with water.
BackFill:
Clean Granular Fill (Sand or Fine Metal Screenings)
For every 250mm of backfill, compact to 95% compaction.
Installer Notes:
- Check local council to see if any permit is required.
- Warranty is voided if not installed as directed by
Melro's Instructions
Underground Tank
Site Notes:
- Site NOT subject to traffic
- Site NOT subject to flooding
- Site's ground water levels do NOT rise above the base of the tank.
If any criteria above cannot be met, Installation B is required
Max soil depth 200mm
Soil
Tank
Length
Excavation Volume (m3)
2500L
3220 8.4
3500L
4180 10.9
4500L
5140 13.4
5500L
6100 15.9
G
G
200
50
1150 Depth
Concrete to fill voids, vibrate to completly fill.
Compacted Sand 50mm
SL82 Mesh
Vibrated Concrete Minimum N25
Concrete
Sand
Backfill
Length
2260 Width
250
250 250
250
Underground Tank
Compacted Backfill
Installation Note:
The Tank must be installed on a smooth flat surface.
The excavation must be free of water.
Before filling with backfill, fully fill tank with water.
Concrete:
Grade N25
80mm Slump
20mm Maximum Aggregate
Vibrate to completely fill tank baffles
BackFill:
Clean Granular Fill (Sand or Fine Metal Screenings)
For every 250mm of backfill, compact to 95% compaction.
Installer Notes:
- Check local council to see if any permit is required.
- Warranty is voided if not installed as directed by
Melro's Instructions
Scenario B - Class B
Car (2500KG Max)
Tank
Length
Excavation Volume (m3)
Concrete Volume (m3)
2500L
3220 8.4 2
3500L
4180 10.9 3
4500L
5140 13.4 4
5500L
6100 15.9 5
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