Engineering Calculation Sheets in Excel: Units, Interpolation in Design Tables, Iteration, Tolerance Stack-Ups & Design Checks
Build calculation sheets you can check and hand over – clear inputs and units, values read between table rows by interpolation, iteration to a converged answer, tolerances added up two ways and pass/fail design checks against fictional limits – with every cell checked as you go.
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About this course
This course builds engineering calculation sheets the way a design office hands them over, using a fictional engineering firm and fictional materials and limits. You lay out inputs, named constants, results and unit columns, read values between table rows with MATCH and INDEX, interpolate two ways in a temperature and pressure table, iterate an implicit formula in columns until the change meets a tolerance, add up tolerance stack-ups by worst case and RSS, compare demand with capacity in utilisation checks with IFS status labels, sweep an input to find where a check fails, and finish with a hand-check deviation table, a revision log and a chart.
Lessons
- Calculation Sheet Layout: Inputs, Named Constants, Results & Unit Columns Pro
- Linear Interpolation in a Design Table: Bracketing Rows, INDEX/MATCH & Out-of-Range Flags Pro
- Two-Way Interpolation: Reading a Temperature × Pressure Table Between Rows and Columns Pro
- Iteration in Columns: Fixed-Point Steps, Change per Step, Tolerance & Iteration Count Pro
- Tolerance Stack-Ups: Nominal Gap, Worst Case vs RSS & Each Part's Share Pro
- Design Checks: Utilisation Ratios, the Governing Check & Pass/Review/Fail Status Pro
- Parametric Sweeps: Vary One Input, Plot the Curve & Find Where the Check Fails Pro
- Checking & Sign-Off: Hand-Check Deviations, a Revision Log & a Summary Chart Pro