What differences have you observed on-site between engineering drawings and practical implementation?

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Differences between engineering drawings and site conditions can reveal practical challenges and design adjustments needed for successful implementation.

Scale discrepancies: Drawings may not accurately represent the actual dimensions on site, leading to misalignment during construction.
Material variations: Specified materials in drawings might not be available on site, requiring substitutions that can affect performance.
Site conditions: Unexpected geological or environmental factors can alter the feasibility of the design, necessitating on-the-fly adjustments.
Installation challenges: Drawings may not account for existing infrastructure, complicating the installation process and requiring redesign.
Human factors: Worker interpretation of drawings can vary, leading to differences in execution that may not align with the intended design.

What differences have you observed on-site between engineering drawings and practical implementation?

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