BUILDING BLOCKS 



Building Blocks 



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Prototype Installation : 

 Unknown locations . 



Wave Tank Tests: 



Unknown. 



Design Factors : 



Zero-damage wave height: 3 to 5 feet (estimated). 



Wave runup: 0.7 to 0.9 compared to smooth slopes (estimated). 

 Wave reflection: Moderate (estimated). 



Remarks : 



Standard concrete building blocks are 16 by 8 by 8 inches high 

 and weigh about 40 pounds. 



Blocks should have open side up to trap littoral drift, reduce 

 uplift pressure, and reduce runup. Backfilling with sand or 

 gravel would increase stability. 



Blocks should have a bruied toe or weighted toe with large rocks 

 or concrete bags. 



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