Table 3. Mooring line forces of two-dimensional model, 

 Wave-Maze scrap-tire floating breakwatei 

 (after Kamel and Davidson, 1968). 



Test d y h w T 



H i " 2a l 



F l 



F 2 



No. (ft) (ft) (ft) (ft) (s) 



(ft) 



(lb) 



(lb) 



1 2.0 0.98 0.32 1( 



).15 0.75 



0.03 











2 













0.09 











3 













0.14 











4 













0.20 











5 









" 



0.26 



0.5 







6 









1.0 



0.05 











7 













0.15 



0.5 



0.3 



8 













0.25 



1.4 



0.4 



9 













0.35 



3.5 



0.6 



10 









" 



0.46 



6.0 



1.2 



11 









1.5 



0.10 



0.5 



2.2 



12 













0.30 



5.5 



3.7 



13 













0.49 



11.0 



5.2 



14 













0.69 



20.0 



6.7 



15 









T 



0.89 



24.0 



7.7 



16 









2.0 



0.15 



1.5 



3.2 



17 













0.44 



9.0 



7.2 



18 













0.73 



24.0 



9.2 



19 









' 



f 



0.78 



26.0 



10.2 



20 









2.5 



0.19 



2.0 



2.0 



21 











0.56 



15.6 



7.8 



22 



' 



' 



' 





0.87 



19.5 



8.5 



definitive sketch of pertinent variables shown in Figure 72. 



Harms and Bender (1978) and Harms (1979a, 1979b) demonstrated that a force 

 parameter, F/yW 2 , is functionally related to the relative wavelength, W/L, 

 and wave steepness, H/L. They reanalyzed the experimental data of Kamel and 

 Davidson (1968), and determined the relationship between these parameters to 

 be that shown in Figure 77. Harms and Bender (1978) assumed that geometric 

 scaling and scaling of elastic and inertia properties of the tires and binding 

 materials had been accomplished in the original experiments. 



2. Goodyear Tire and Rubber Company Concept. 



The Goodyear scrap-tire floating breakwater concept uses a modular 

 building-block design with the breakwater section constructed of units of 

 relatively few tires secured together to form a small, easily assembled, 

 portable building unit which serves as the basic element for constructing the 

 large structure. The simple construction procedure is accomplished by secur- 

 ing 18 individual tires together to form a 7- by 6.5- by 2.5-foot tightly 

 interlocked bundle of scrap tires (Candle and Fischer, 1976). The basic 

 method of constructing the tire modules is to stack the tires flat, but ver- 

 tically, in a 3-2-3-2-3-2-3 combination (Fig. 78), constantly interweaving the 

 tying material. The increasing weight of the tire stack and the physical 

 compression of the tires during assembly will compress the tires enough to 



124 



