5/12/2025
In high-complexity civil engineering and construction projects, the variability between the rebar quantities specified in the Design (IFC) and those ultimately utilized in Fabrication (Shop Drawings) is a recurrent source of technical conflicts and budgetary overruns.
Deltana Engineering addresses this critical challenge through our Third-Party Independent Audit service and the rigorous application of our proprietary methodology: C.O.R.E. Detailing™ (Constructability-Oriented Rebar Engineering).
Methodology for Quantity Verification and Contrast
Our approach focuses on establishing technical certainty by performing a dual-modeling process and comparative analysis:
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IFC vs. Shop Tonnage Validation: Utilizing Tekla Structures, we create a "Digital Twin" of the reinforcement. We model strictly from the Issued For Construction drawings (IFC) to establish a precise design baseline and contrast it with the net, "ready-to-cut" weights from fabrication data.
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Comparative Gap Analysis: Our objective is to move beyond the total difference. We classify discrepancies by detecting their precise origin, including:
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Inefficiencies derived from excessive splice lengths (Lapping Inefficiencies).
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Subtle interpretation errors between design intent and the detailer's execution.
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Strict differentiation between necessary field adjustments (Constructability) and preventable waste.
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Professional and Technical Impact
The C.O.R.E.® audit is an essential resource for mitigating financial risk and effectively resolving quantity and criteria discrepancies that arise on site between contractors or project stakeholders. Based on our extensive experience, this process guarantees transparency and technical certainty , which is fundamental for budget validation and optimizing remaining project phases.
Invitation to Professional Dialogue:
To explore how the application of a Precise, Unbiased Contrast and the actionable intelligence of the C.O.R.E.® Audit can strengthen the technical and budgetary management of your next civil works project, request a complimentary consultation with our engineering team.
#CivilEngineering #RiskManagement #RebarDetailing #ThirdPartyAudit #Constructability #TeklaStructures #DeltanaEngineering