# Strip Foundation Concrete Calculator — United States

> Calculate concrete quantity for an already specified rectangular strip foundation. USD planning view; stated limitations apply.

Page: https://askcalculators.com/us/foundation/
Definition: https://askcalculators.com/us/foundation/definition.json
JSON Schema: https://askcalculators.com/us/foundation/schema.json
Version: 20.16.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/us/foundation/?unitSystem=imperial&length=131.23359580052494&width=1.9685039370078738&depth=0.9842519685039369&wastePercent=10&unitRate=0&laborCost=0&deliveryCost=0&otherCost=0&costMultiplier=1&spreadPercent=15&taxRate=0

## Inputs
- unitSystem: Measurement system; type=select; optional; default=imperial; values=imperial|metric
- length: Total strip length; type=number; required; default=131.23359580052494; min=0.03280839895013123; max=3280839895013.123
- width: Specified strip width; type=number; required; default=1.9685039370078738; min=0.03280839895013123; max=3280839895013.123
- depth: Specified concrete thickness; type=number; required; default=0.9842519685039369; min=0.03280839895013123; max=3280839895013.123
- wastePercent: Cutting/waste allowance; type=percent; required; default=10; min=0; max=100
- unitRate: Material price per volume unit; type=money; required; default=0; min=0; max=764554857984
- laborCost: Total labor allowance; type=money; required; default=0; min=0; max=1000000000000
- deliveryCost: Delivery allowance; type=money; required; default=0; min=0; max=1000000000000
- otherCost: Other fixed costs; type=money; required; default=0; min=0; max=1000000000000
- costMultiplier: Material/labor multiplier; type=number; required; default=1; min=0.1; max=10
- spreadPercent: Low/high sensitivity around the entered total; type=percent; required; default=15; min=0; max=100
- taxRate: Explicit tax allowance; type=percent; required; default=0; min=0; max=100

## Outputs
- netVolume: Geometric concrete volume; format=number
- orderVolume: Order volume including allowance; format=number
- materialCost: Material cost; format=currency
- laborCost: Labor allowance; format=currency
- deliveryCost: Delivery allowance; format=currency
- otherCost: Other specified costs; format=currency
- tax: Entered tax allowance; format=currency
- low: Low cost scenario; format=currency
- mid: Middle cost scenario; format=currency; primary
- high: High cost scenario; format=currency

## Formula
concrete volume = total strip length × specified width × specified thickness.

Inputs are converted to canonical units before evaluating this stated formula.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: Illustrative defaults are not local quotes or verified legal rules. Dated reference components and user-entered assumptions are explicitly distinguished. Professional review is pending.