Fiberglass
500 Gallon Septic Tank Dimensions
The Tank Source GBF0500 is a 500-gallon, two-compartment fiberglass septic tank with a 72-inch diameter and 55-inch overall height. Other models can differ.
| Specification | US customary | Metric |
|---|---|---|
| Diameter × overall height | 6 ft diameter × 4 ft 7 in high | 1.83 m diameter × 1.4 m high |
| Rated liquid capacity | 500 US gal | 1,893 L |
Check
Site preparation and access checks
Use the product footprint as the starting point; the installer and local authority must set the excavation, access, and load requirements.
| Check | What to verify |
|---|---|
| Product footprint | Start with 6 ft diameter × 4 ft 7 in high. Working room, bedding, and trench geometry are not specified here. |
| Delivery and access route | Confirm gate width, overhead clearance, turning space, surface condition, and future pumping access. |
| Handling and placement | Confirm lifting points, truck access, and manufacturer handling instructions; this listing does not establish a universal installation method. |
| Burial depth and covers | Confirm model-specific burial depth, risers, cover loading, water table, and backfill in the drawing and permit. |
| Driveway / vehicle loading | Do not infer traffic rating from material. Use the rated cover/configuration and have the designer confirm loads. |
Boundary: product pages provide model data, not a universal excavation or traffic plan. Cross-check the cover/load guidance and EPA access guidance: A.J. Foss traffic ratings·EPA septic FAQs
What this chart establishes
This is one supplier listing for the GBF0500 model. It does not establish universal 500-gallon dimensions, weight, burial depth, traffic rating, access clearance, or local approval.
Use the right measurements
Use the model drawing and permit record for excavation or replacement work. To estimate liquid volume, enter internal length, width, and liquid depth in the volume calculator.
Open the septic tank volume calculatorCompare another capacity
Common questions
What are the dimensions of a 500-gallon septic tank?
This example is round: 72-inch diameter × 55-inch overall height, or about 1.83 m diameter × 1.4 m high. Verify the supplier drawing for the exact model.
Are all 500-gallon septic tanks the same size?
No. The gallon rating describes liquid capacity. Material, wall thickness, compartments, structural rating, and manufacturer can change the exterior dimensions.