Geogrid

Design Parameters Tab

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Retained Height:

Displays the retained height based on block coursing and geometry entered on the Block & Geogrid tab.

Embedment:

Depth below grade (on the low side) to top of setting pad. Usually one block course or 1’-0”.

Base Pad Depth:

Thickness of the base pad.

Backfill Slope:

Select the backfill slope from the drop-down list box.

Soil Density, Exterior (in-situ):

Enter the density of the native soil beyond the backfill zone and under the base.

Soil Density, Interior (backfill):

Enter the density of the backfill material (typically granular soil or gravel).

Soil Phi, Exterior (in-situ):

Enter the angle of internal friction of in-situ soil.

Soil Phi, Interior (backfill):

Enter the angle of internal friction of the backfill soil.

Allowable Soil Bearing Pressure:

Enter the allowable soil bearing pressure.

Minimum Acceptable Factors of Safety:

Specify the minimum acceptable factors of safety for each of the different failure modes, or click the reset button to easily reset all values to defaults as per NCMA Table 5-2.