A 0.200 m³ BOQ discrepancy: from source to review decision
Recreated case study. This is a fictional learning example, not a record of a completed client project. The dimensions and figures match the BOQ guide and downloadable workbook.
The problem
A BOQ lists 3.800 m³ of concrete for four identical equipment bases. The takeoff reviewer needs to establish whether the quantity follows the stated source and scope before it is issued.
Evidence reviewed
Illustrative drawing EX-DWG-001, revision R02, identifies fictional pump plinths P1–P4. For this example each base is 2.000 m long, 1.500 m wide and 0.300 m deep. The scope is rectangular concrete volume only. There are no deductions. Reinforcement, formwork, excavation, blinding and wastage are outside this example.
Independent calculation
One base: 2.000 × 1.500 × 0.300 = 0.900 m³. Four bases: 0.900 × 4 = 3.600 m³. Variance is calculated quantity minus BOQ quantity: 3.600 − 3.800 = −0.200 m³. The BOQ figure is 0.200 m³ higher than the quantity supported by the stated assumptions.
The review decision
Record status “Query open”. Ask the preparer whether the additional 0.200 m³ represents another base, a changed revision, a scope allowance or an arithmetic error. Attach the source reference and calculation. Do not silently replace the BOQ quantity or treat the discrepancy as resolved.
Outcome and remaining sign-off
The example produces a traceable discrepancy record and a specific request for clarification. It does not establish an approved final quantity or claim a cost saving. The preparer’s response, reviewer identity, review date and issue approval remain outstanding. The workbook deliberately leaves actual sign-off fields blank.
Apply the method
On a real project, confirm that the contract adopts the stated measurement basis, verify every repeated element and record any deductions. Close the query only after the source, scope and decision agree.