Elastic Prestress Loss Calculator
Infer actual transfer-stage shortening strain from independently measured shortening and matched gauge length, then elastic steel compatibility and caller transfer fraction; distinct from sustained creep coefficient and shrinkage increment records. Caller independently establishes units, regime and applicability; not design-code compliance or operating safety.
Description
Elastic-shortening loss relates a measured shortening to a gauge length and modulus.
Elastic-shortening loss relates a measured shortening to a gauge length and modulus.1
A transfer factor represents the caller's chosen relation to prestress loss. Use this tool to calculate elastic Prestress Loss from the supplied measurements and assumptions.
When to use Elastic Prestress Loss Calculator
Use this tool to calculate elastic Prestress Loss 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 Elastic Prestress Loss 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 observedConcreteShorteningM, matchedConcreteGaugeLengthM, prestressingSteelModulusPa, callerStageTransferFraction, using the field meanings and rules below, then run the tool.
- Read stagePrestressStressLossPa. 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 |
|---|---|---|---|
| observedConcreteShorteningM | Observed concrete shortening m | number | Required |
| matchedConcreteGaugeLengthM | Matched concrete gauge length m | number | Required |
| prestressingSteelModulusPa | Prestressing steel modulus pa | number | Required |
| callerStageTransferFraction | Caller stage transfer fraction | number | Required |
Enter nonnegative observed elastic shortening in m, positive gauge length in m and modulus in Pa, plus transfer fraction in [0,1]. Convert shortening to strain and multiply by modulus and transfer. No member-shortening estimate or stressing-sequence correction is generated.
lossPa=shorteningM/gaugeLengthM×modulusPa×transferFraction Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| stagePrestressStressLossPa | Stage Prestress Stress Loss Pa; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"observedConcreteShorteningM": 0.001,
"matchedConcreteGaugeLengthM": 1,
"prestressingSteelModulusPa": 100000,
"callerStageTransferFraction": 0.5
},
"output": {
"stagePrestressStressLossPa": 50
}
}Limitations and assumptions
A transfer factor represents the caller's chosen relation to prestress loss. 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 Shrinkage Prestress Loss Calculator for this related task: A shrinkage-loss increment depends on the difference between matched and already included strains.
Use Anchorage Slip Prestress Loss Calculator when its separate inputs and assumptions fit the question: Anchorage slip produces a modeled strain change over an independently chosen affected length.
References
-
Elastic Prestress Loss Calculator — tool.io
Similar or alternative tools
- Shrinkage Prestress Loss Calculator
A shrinkage-loss increment depends on the difference between matched and already included strains.
- Anchorage Slip Prestress Loss Calculator
Anchorage slip produces a modeled strain change over an independently chosen affected length.