Description
Compare supplied installed, contracted and paid quantities.
Construction records combine revisions, dates, dimensions, rental periods, claims and financial balances. Revision numbers need not be consecutive, calendar offsets differ from business days, and recoverable length can depend on a strict cutoff. A supplied approval or readiness label is a record assertion rather than an engineering inspection or contractual determination.
Compare supplied installed, contracted and paid quantities.
When to use this tool
Use Construction Pay Item Quantity Variance when you already have contractQuantity, installedQuantity, paidQuantity and need to compare supplied installed, contracted and paid quantities.
How to use the tool and how it works
- Enter contractQuantity, installedQuantity, paidQuantity. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read installedMinusContract, unpaidInstalledQuantity. Use the output convention below.
Require all quantities>=0; return installed-contract and installed-paid.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| contractQuantity | Contract Quantity | Required. Finite number; minimum 0. |
| installedQuantity | Installed Quantity | Required. Finite number; minimum 0. |
| paidQuantity | Paid Quantity | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| installedMinusContract | Installed Minus Contract | Required. Finite number. |
| unpaidInstalledQuantity | Unpaid Installed Quantity | Required. Finite number. |
{
"input": {
"contractQuantity": 100,
"installedQuantity": 110,
"paidQuantity": 80
},
"output": {
"installedMinusContract": 10,
"unpaidInstalledQuantity": 30
}
}Limitations and assumptions
- Signed discrepancies are retained. No completed work, payment, overrun, claim or contract interpretation is established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Check controlled drawings, site measurements, schedules, approvals and the complete contract. Use the appropriate engineering assessment and actual billing or claim terms when a local scalar calculation or date comparison cannot establish suitability or entitlement.
References
Similar or alternative tools
- Construction Unit Rate Extension
Extend a supplied construction quantity and rate with a signed fixed adjustment.
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Apply a supplied markup fraction to construction cost components.