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Tiered ROCKWOOD Retaining Walls may be installed where it is desirable, or aesthetically pleasing, to use two or more smaller walls in lieu of one large wall. However, the upper walls can exert extra surcharge loads on the lower walls. To avoid placing surcharge loads on the lower walls, the upper walls must be set back horizontally a distance of at least twice the height of the lower walls. Closely spaced tiered walls can create excess surcharge loads on the lower tiered wall sections. Such tiered walls are not recommended. Whenever tiered walls are constructed, a qualified soils engineer should be consulted and approved construction plans should be followed in constructing the tiered retaining wall. |
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