Description
Calculate signed backfill volume after a rootball and drainage allowance.
Landscape geometry distinguishes plan area, depth, void fraction, grade, center spacing and nominal clearances. A horizontal-per-vertical slope is the inverse orientation of rise/run, and post counts differ from bay counts. Supplied geometric terms do not establish stability, drainage, accessibility or safe construction.
Calculate signed backfill volume after a rootball and drainage allowance.
When to use this tool
Use Planting Pit Backfill Net Volume when you already have pitVolume, rootballVolume, suppliedDrainageVolume and need to calculate signed backfill volume after a rootball and drainage allowance.
How to use the tool and how it works
- Enter pitVolume, rootballVolume, suppliedDrainageVolume. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read backfillVolume. Use the output convention below.
Require all three volumes nonnegative; return pit-rootball-drainage.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| pitVolume | Pit Volume | Required. Finite number; minimum 0. |
| rootballVolume | Rootball Volume | Required. Finite number; minimum 0. |
| suppliedDrainageVolume | Supplied Drainage Volume | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| backfillVolume | Backfill Volume | Required. Finite number. |
{
"input": {
"pitVolume": 1,
"rootballVolume": 0.3,
"suppliedDrainageVolume": 0.1
},
"output": {
"backfillVolume": 0.6
}
}Limitations and assumptions
- A negative remainder is retained; geometry, soil behavior, drainage performance and suitable planting are not assessed.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a verified site survey and complete dimensioned layout for a landscape design. Include material behavior, drainage, ground conditions and the applicable requirements when local volumes, grades or spacing calculations cannot answer the full question.
References
Similar or alternative tools
- Planter Free Drainage Layer Volume
Calculate gross and void volume of a supplied drainage layer.
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