Braced Excavation Strut Load Calculator
Strut tributary area load and independently established sharing, not pressure prediction or strut capacity. 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 tributary-area model converts supplied lateral pressure into a strut demand.
A tributary-area model converts supplied lateral pressure into a strut demand.1
The pressure distribution and load-sharing factor require independent geotechnical and structural assessment. Use Braced Excavation Strut Load Calculator to evaluate the supplied inputs under the specific model below.
When to use Braced Excavation Strut Load Calculator
Use Braced Excavation Strut Load Calculator to evaluate the supplied inputs under the specific model below. Establish the units, measurement scope and applicable model or recipe assumptions before entering values.
How to use Braced Excavation Strut Load Calculator and understand its results
- Establish the units, measurement scope and applicable model or recipe assumptions before entering values.
- Enter Caller matched average strut pressure pa, Tributary vertical height m, Strut horizontal spacing m, Caller load sharing fraction using the field table and validation rules below, then run the tool.
- Read Tributary strut demand n and interpret units, signs, ordering and placeholders as explained below.
- If the tool reports an input error, correct that field and rerun. A successful false result, empty match list or unknown-evidence placeholder has the specific meaning described here; check the limitations before applying the result.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerMatchedAverageStrutPressurePa | Caller matched average strut pressure pa | number | Required; constraints below |
| tributaryVerticalHeightM | Tributary vertical height m | number | Required; constraints below |
| strutHorizontalSpacingM | Strut horizontal spacing m | number | Required; constraints below |
| callerLoadSharingFraction | Caller load sharing fraction | number | Required; constraints below |
Enter nonnegative matched lateral pressure in Pa, positive tributary height and strut spacing in m, and a load-sharing fraction from 0 to 1. Multiply pressure by tributary area and the supplied share. No pressure diagram, support interaction or design load combination is selected.
strutDemandN = pressurePa×heightM×spacingM×loadShare Field order, units and branch conditions follow the implementation explanation above.
| Output field | Meaning | Value type |
|---|---|---|
| tributaryStrutDemandN | Tributary strut demand n | number |
{
"input": {
"callerMatchedAverageStrutPressurePa": 10,
"tributaryVerticalHeightM": 2,
"strutHorizontalSpacingM": 3,
"callerLoadSharingFraction": 0.5
},
"output": {
"tributaryStrutDemandN": 30
}
}Limitations and assumptions
The pressure distribution and load-sharing factor require independent geotechnical and structural assessment. Apply the exact scope and assumptions described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are stated above; extremely large inputs or outputs can also be rejected. These errors differ from successful results such as false, no matches or unknown evidence.
Alternative or Complementary methods
Use Deep Beam Shear Calculator for a related task: A diagonal strut idealization relates support shear to compression force and area.
Use Earthquake Base Shear Calculator for a related task: Base shear can be represented by a coefficient times effective seismic weight.
References
-
Braced Excavation Strut Load Calculator — tool.io
Similar or alternative tools
- Deep Beam Shear Calculator
A diagonal strut idealization relates support shear to compression force and area.
- Earthquake Base Shear Calculator
Base shear can be represented by a coefficient times effective seismic weight.