Figure 6.22 Articulated concrete block system.
6.6.7 Used Tires
Tires have been placed both as a mattress and stacked back against the bank. Both methods
appear to have some potential as an economical approach to protect a streambank, but
environmental issues and aesthetics must be considered.
During construction of a tire mattress on an eroding bank, two precautions should be
considered to ensure that the mattress will stay in place.
The tires must be banded together; alternatively, cables running the length and width of the
mattress can be woven through the tires.
The top, toe and the upstream and downstream ends of the mattress must be tied to the
bank (Figure 6.23). If scour is anticipated, riprap should be placed at the toe of the
mattress for additional protection.
Figure 6.23. Used tire mattress (after Keown 1983).
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