Total Prestress Losses Calculator
Compose explicitly sequential prestress loss fractions on each remaining stage stress, not double-counted independent additive losses. 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
Sequential fractional losses act on the remaining prestress after each stage.
Sequential fractional losses act on the remaining prestress after each stage.1
Their combined effect differs from simply adding the supplied loss fractions. Use this tool to calculate total Prestress Losses from the supplied measurements and assumptions.
When to use Total Prestress Losses Calculator
Use this tool to calculate total Prestress Losses 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 Total Prestress Losses 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 initialPrestressPa, callerSequentialStageLossFractions, using the field meanings and rules below, then run the tool.
- Read remainingPrestressByStagePa, totalSequentialPrestressLossPa. 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 |
|---|---|---|---|
| initialPrestressPa | Initial prestress pa | number | Required |
| callerSequentialStageLossFractions | Caller sequential stage loss fractions | list of number | Required |
Enter nonnegative initial stress and an ordered list of loss fractions in [0,1]. Successively multiply retained stress by 1−fraction, returning retained values by stage and total stress loss. An empty list is valid and yields no stages and zero loss. Fractions are not added.
retained_k=retained_(k−1)×(1−lossFraction_k); totalLoss=initial−finalRetained Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| remainingPrestressByStagePa | Remaining Prestress By Stage Pa; follow the units, sign, ordering and evidence convention stated above | list of number |
| totalSequentialPrestressLossPa | Total Sequential Prestress Loss Pa; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"initialPrestressPa": 100,
"callerSequentialStageLossFractions": [
0.1,
0.2
]
},
"output": {
"remainingPrestressByStagePa": [
90,
72
],
"totalSequentialPrestressLossPa": 28
}
}Limitations and assumptions
Their combined effect differs from simply adding the supplied loss fractions. 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 Creep Prestress Loss Calculator when its separate inputs and assumptions fit the question: Creep-related loss combines sustained strain, a creep coefficient and a modulus.
References
-
Total Prestress Losses 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.
- Creep Prestress Loss Calculator
Creep-related loss combines sustained strain, a creep coefficient and a modulus.