Shear Wall Length Calculator
Restricted demand/actual engineer established capacity per length wall sum length; no wall configuration, connection/load path or safe-design selection. Actual independently established design/material/calibration and matched units; not a safe work instruction, code compliance or engineering approval.
Description
A shear wall transfers lateral load through its connections and foundation as well as its sheathing.
A shear wall transfers lateral load through its connections and foundation as well as its sheathing.1
This tool divides a supplied shear demand by an independently established capacity per unit length to obtain a conditional wall length.
When to use Shear Wall Length Calculator
Use this tool to calculate a supplied shear demand by an independently established capacity per unit length to obtain a conditional wall length.
How to use Shear Wall Length Calculator and how it works
- Prepare actualLateralShearDemand, callerIndependentlyEstablishedDesignCapacityPerWallLength, with the units, conventions and assumptions below.
- Enter the required fields and run Shear Wall Length Calculator.
- Read result.value using the output definitions below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualLateralShearDemand | Actual Lateral Shear Demand. Use the units and matching context stated in the calculation below. | number | Required; nonnegative; finite; other constraints below |
| callerIndependentlyEstablishedDesignCapacityPerWallLength | Caller Independently Established Design Capacity Per Wall Length. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
Supply nonnegative lateral shear demand and positive independently established allowable capacity per unit wall length in matching units. Return their quotient as conditional wall length. Openings, hold-downs, distribution, aspect ratios and code factors are not checked.
wallLength=shearDemand/allowableCapacityPerLength 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 | Conditional geometric length in the input's compatible length unit. | number |
{
"input": {
"actualLateralShearDemand": 10,
"callerIndependentlyEstablishedDesignCapacityPerWallLength": 2
},
"output": {
"result": {
"value": 5
}
}
}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 Joist Span Lookup for a complementary operation: A joist span depends on species, grade, spacing, section, loading and the applicable deflection criterion.
Use Floor Joist Deflection Check for a complementary operation: Floor-joist deflection is interpreted against limits appropriate to the span, loading and finish.
References
-
Shear Wall Length Calculator — tool.io
Similar or alternative tools
- Joist Span Lookup
A joist span depends on species, grade, spacing, section, loading and the applicable deflection criterion.
- Floor Joist Deflection Check
Floor-joist deflection is interpreted against limits appropriate to the span, loading and finish.