By: Javier Encinas, PE | May 2, 2017

ASDIP RETAIN is a structural engineering software to design retaining walls. However, the software is so flexible that it can also be used to design a masonry fence wall exposed to wind. This article shows the steps required to design a fence wall using ASDIP RETAIN.

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As an example, let’s design a typical fence 7′-0″ high exposed to a wind load of 20 psf.

The first obvious step in the software is to set the backfill height to match the soil cover at the toe side. This will model a flat surface at both sides of the wall. In this example let’s set this soil cover to 1′-0″.

The fence wall will be modeled with 12 rows of 8″ wide x 8″ high concrete blocks, so that the exposed wall height is 7′-0″, as shown.

Note that the shear key dimensions have been set to zero, since it’s unlikely that a fence wall has sliding problems.

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Enter the wind pressure. Note that this needs to be calculated independently. This value has been specified in this example for illustration purposes only.

Note that the wind height matches the exposed stem height.

No other loads have been specified in this example.

The image below shows the stability analysis of ASDIP RETAIN. The safety factors of overturning, sliding, and bearing are larger than the minimum allowable values for the controlling load combination.

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The image below shows the moment and shear diagrams of the stem, for the controlling load combination, generated by ASDIP RETAIN. Note the blue shaded area representing the structural capacity.

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The image below shows the construction details of the wall, in section and elevation, generated by ASDIP RETAIN.

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Use the Reinforcement tab at the left pane of the software to enter the stem rebar size and spacing.

ASDIP RETAIN generates a cross section and elevation views with rebars in the Construction tab.

Detailed information is available about this structural engineering software by visiting ASDIP RETAIN. For engineering background, see our blog post Cantilever Retaining Walls: An Overview of the Design Process (Part 1)  and (Part 2).

You are invited to download a Free 15-Day Software Trial or go ahead and Place Your Order.

Best regards,

Javier Encinas, PE
ASDIP Structural Software

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