Hudson, Jackson, and Cuckler (1957) reported results of runup and 

 overtopping for structure slopes ranging from 1 on 2 to 1 on 10 with 

 the structure slope fronted by a 1 on 10 beach slope. A rather narrow 

 range of wave steepness was investigated but different water depths 

 were used and the structure geometry was varied, including the beach- 

 slope length, Z. Relative runup results varied for the differing 

 geometries, even for equal wave conditions (H^/gT 2 and dg/gT 2 ) , and the 

 variations probably result in part from the differing relative beach- 

 slope length, Z/L. However, the data are insufficient to further 

 define the effect. 



Saville (1958) described large-scale tests and tests for identical 

 conditions at one-tenth scale. A wide range of wave steepnesses was 

 tested, but relative depth (d s /H^) had a rather narrow range. These 

 tests were used by Saville to develop scale-effect correction factors. 



Shinohara (1958) investigated breaker heights and wave runup on 

 1 on 10 and 1 on 20 slopes. His runup values for the 1 on 10 slope 

 were less than those of Saville (1956) , and the 1 on 20 runup values 

 were bracketed by Saville 1 s curves for the 1 on 10 and 1 on 30 slopes. 

 Savage (1958) gave runup test results for smooth and rough slopes sited 

 on a horizontal surface; results were plotted to emphasize roughness 

 and permeability. In Savage (1959), the same basic data were given, 

 but the data were plotted as R/H^ versus H^/T 2 for each specific 

 structure slope and roughness. Sorensen and Willenbrock (1962) studied 

 runup on a smooth 1 on 4 slope, both with and without a berm; Talian 

 and Vesilind (1963) provided additional data for the same structure but 

 used different water depths. The wave heights were measured values; 

 however, when converted to deepwater values, the results for the smooth 

 slope agree well with Saville's (1956) data. Sorensen and Willenbrock's 

 results are also incorporated in Herbich, Sorensen, and Willenbrock 

 (1963). 



Hosoi and Mitsui (1963) tested runup on a 1 on 1.5 slope for compli- 

 cated geometry seaward of the structure which in some cases was located 

 shoreward of the waterline. Tominaga, Hashimoto, and Sakuma (1966) 

 described runup on four different structure slopes sited on 1 on 20 and 

 1 on 30 beach slopes. Their results for the 1 on 20 beach showed rela- 

 tive runup for the lower wave steepnesses and for dg/H^ < 1.0 to be 

 lower than runup results obtained on a structure fronted by a 1 on 10 

 slope, such as tested by Saville (1956). Results for other conditions 

 seem comparable for the two beach slopes. Bucci and Whalin (1969) 

 generated low steepness waves for runup on slopes of approximately 

 1 on 22 in a three-dimensional model of Monterey Bay, California. 

 Bucci and Whalin (19 70) conducted two-dimensional runup studies using 

 high steepness waves, and the use of the results allows extension of 

 the range of high wave steepness runup values beyond those used in the 

 SPM relative runup curves. Nussbaum and Colley (1971) conducted a 

 limited study on smooth slopes in conjunction with tests on soil-cement 

 stepped slopes. Ahrens (1975b) used a new runup gage which gave results 

 for a 1 on 10 slope comparable to those of Saville (1956) and Savage (1959) 



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