Suspension Cable Tension Calculator
Parabolic uniform horizontal-projection suspended load, horizontal/support tension distinct, not self-weight catenary or cable safety. Caller independently establishes units, regime, calibration and applicability; this does not establish design-code compliance, authenticity, operational safety, treatment efficacy or a validated forecast.
Description
A parabolic cable model relates horizontal uniform load, span and sag to support tension.
A parabolic cable model relates horizontal uniform load, span and sag to support tension.1
It is distinct from an exact self-weight catenary or a full suspension-system analysis. Use this tool to calculate suspension Cable Tension from the supplied measurements and assumptions.
When to use Suspension Cable Tension Calculator
Use this tool to calculate suspension Cable Tension from the supplied measurements and assumptions. Establish the SI units or caller unit basis, load signs, measurement interval, model conditions and independently chosen coefficients or references.
How to use Suspension Cable Tension Calculator and understand its results
- Establish the SI units or caller unit basis, load signs, measurement interval, model conditions and independently chosen coefficients or references.
- Enter uniformHorizontalCableLoadNM, cableSpanM, cableMidspanSagM, using the field meanings and rules below, then run the tool.
- Read parabolicCableHorizontalTensionN, parabolicCableSupportTensionN. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| uniformHorizontalCableLoadNM | Uniform horizontal cable load n m | number | Required |
| cableSpanM | Cable span m | number | Required |
| cableMidspanSagM | Cable midspan sag m | number | Required |
Enter nonnegative load per horizontal meter, positive horizontal span and sag. Compute horizontal tension wL²/(8sag), vertical support component wL/2 and support resultant by hypot. Uniform loading and a parabolic shape are assumed; zero load returns zero components.
H=wL²/(8sag); V=wL/2; supportTension=hypot(H,V) Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| parabolicCableHorizontalTensionN | Parabolic Cable Horizontal Tension N; follow the units, sign, ordering and evidence convention stated above | number |
| parabolicCableSupportTensionN | Parabolic Cable Support Tension N; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"uniformHorizontalCableLoadNM": 2,
"cableSpanM": 4,
"cableMidspanSagM": 1
},
"output": {
"parabolicCableHorizontalTensionN": 4,
"parabolicCableSupportTensionN": 5.656854249492381
}
}Limitations and assumptions
It is distinct from an exact self-weight catenary or a full suspension-system analysis. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Influence Line Ordinate Calculator for this related task: An influence line describes response to a unit moving load.
Use Sheet Pile Bending Moment Calculator when its separate inputs and assumptions fit the question: A beam section trace integrates signed line loads into shear and bending moment.
References
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Suspension Cable Tension Calculator — tool.io
Similar or alternative tools
- Influence Line Ordinate Calculator
An influence line describes response to a unit moving load.
- Sheet Pile Bending Moment Calculator
A beam section trace integrates signed line loads into shear and bending moment.