When designing for a slope above a retaining wall, the
Mononobe-Okabe (M-O) seismic methodology limits the steepness allowed above the
wall. If during the design phase it is determined that the desired slope is not
allowed, the site grading should be altered, or the wall height should be
increased to reduce the steepness of the slope above. See section
12.4 of Best Practices for description of slope steepness. (ref. BP, Chapter 11.3)
Allan Block is working to achieve our industry initiative of Zero Wall Failures. With our Best Practices Manual and experience in the industry we are trying to expand the knowledge base for the design of segmental retaining walls (SRW's) by communicating and educating the professionals in the industry. To see the full Best Practices Manual, visit allanblock.com to download today and keep an eye out for more industry Best Practice recommendations here.
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