ACI Report

An ACI Report:

1. Calculates whether the Test Strengths included in the report satisfy the requirements of ACI 301-96 (References 1) for a Specified Compressive Strength (f_c').
2. Determines standards of concrete control for the selected Test Strengths according to ACI 214-77 (References 2).

Generally you will wish to select the Test Strengths to be used in the report by filtering them.

See Filtering Test Strengths.

To obtain an ACI Report you should:

Click with the left hand mouse button on the Strength Data button at the left of the FirstBreak window if the Strength Data icons are not displayed

Click with the left hand mouse button on the Test Strengths icon at the left of the FirstBreak window

click the 'Report' icon in the Toolbar.

Select the ACI Report Radio Button in the Dialog which will appear and click on the dialog's icon.

Enter the Specified Compressive Strength (f_c') in the Dialog which will appear.

Select the Classes of Operation for which Overall Standard of Concrete Control and the Within-Test Standard of Concrete Control are to be determined.

Select whether the Test Strengths are for one set or two sets of consecutive tests.

Click on the dialog's icon to generate a report.

You can also use the New report item of the Operations Menu or click with the right mouse button in the window where the Test Strengths are displayed and select the New report item in the menu that appears.

An ACI Report includes these items:

• A statement whether the report is for one or two sets of consecutive tests.
• If the report is for two sets of consecutive tests, the number of Test Strengths in each set.
• The total number of Test Strengths included in the report.

If there are sufficient tests to obtain a Standard Deviation (see Minimum Number of Test Strengths), the following items are included:

• the k-factor
• The Standard Deviation of the Test Strengths included in the report
• The Adjusted Standard Deviation

These items follow:

• The Specified Compressive Strength
• The Required Average Compressive Strength
• The average of the Test Strengths included in the report
• The Margin of Extra Performance
• A statement on whether the Test Strengths satisfy the requirements of ACI 301-96, for the Specified Compressive Strength.

The final section of the report includes these items:

• The Class of Operation (Overall).
• The Overall Standard of Concrete Control according to ACI 214-77.
• The number of Test Strengths obtained from 2 or more Test Specimen Strengths.
• The Class of Operation (Within-Test).
• The Within-Test Standard of Concrete Control according to ACI 214-77.
• The average Test Coefficient of Variation of the Test Strengths included in the report, which were obtained from 2 or more Test Specimen Strengths.
• The average Test Range of the Test Strengths included in the report, which were obtained from 2 or more Test Specimen Strengths.