Plumbing Pipe Inner Diameter From Outer Calculator
Actual circular pipe internaldiameterOD−2t, strictly positive bore, not nominalDNor thin wall capacity. Actual independently matched units, regime, material/equipment and governing references; not a hydraulic code, safe pressure, water pot ability or operational approval.
Description
Pipe internal diameter subtracts two wall thicknesses from outside diameter.
Pipe internal diameter subtracts two wall thicknesses from outside diameter.1
A positive bore requires the outside diameter to exceed twice the thickness. The calculation and input requirements are explained below.
When to use Plumbing Pipe Inner Diameter From Outer Calculator
Enter positive outside diameter and wall thickness in matching length units.
How to use Plumbing Pipe Inner Diameter From Outer Calculator and how it works
- Prepare the measurements or independently established model inputs described below, with matching units and observation scope.
- Enter the required fields and run Plumbing Pipe Inner Diameter From Outer Calculator.
- Read the result fields using the formula, output units, signs and ordering explained below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualOuterDiameter | Actual Outer Diameter. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
| actualWallThickness | Actual Wall Thickness. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
Enter positive outside diameter and wall thickness in matching length units. Require outside diameter>2*thickness. Subtract twice thickness to return positive inside diameter in the same unit.
innerDiameter=outerDiameter-2*wallThickness Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Numeric result under the formula and output units explained above. | number |
{
"input": {
"actualOuterDiameter": 10,
"actualWallThickness": 1
},
"output": {
"result": {
"value": 8
}
}
}Limitations and assumptions
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Plumbing Torricelli Velocity Calculator for a complementary operation: Torricelli's ideal velocity relates reservoir head to gravitational acceleration.
Use Plumbing Pipe Velocity From Flow Calculator for a complementary operation: Mean velocity in a full circular pipe follows from volume flow divided by bore area.
References
Similar or alternative tools
- Plumbing Torricelli Velocity Calculator
Torricelli's ideal velocity relates reservoir head to gravitational acceleration.
- Plumbing Pipe Velocity From Flow Calculator
Mean velocity in a full circular pipe follows from volume flow divided by bore area.