You can add a validation rule to a field in your table's Design View. Select your field in Design View and look for the Validation Rule field at the bottom of the screen.

This is where you can enter a validation rule for your field.

The phrase checking powers is actually quite straight-forward. Checking powers means that you make sure that one power does not rule over another.

If it is even, it is divisible by two evenly.

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Mechanical design of static equipment is checking the safety of the equipment as per standard code for given conditions.And its decide the sizing of the equipments.