APPENDIX A: CAUDAID: Concrete Armor Unit Design Aid 

 Purpose 



1. The purpose of this computer program is to predict the stress level 

 and the resulting design factor of safety with respect to the fatigue reduced 

 design strength in a dolos unit armor layer due to combined static and pulsat- 

 ing loads. The program is restricted to hydrodynamically stable dolos applica- 

 tions where only slight impact loads due to dolos rocking or projectiles 

 within the armor layer are anticipated. 



Background 



2. The program CAUDAID automates the analytical approach contained in 

 the dolos design procedure for computing the dolos stability and design 

 stress. The program can be used to design dolosse for a wide variety of 

 environmental and structural configurations, but it has only been validated 

 for the Crescent City breakwater, where 42 -ton dolosse with waist ratios of 

 0.32 are stacked in two or more layers on a 1:5 slope. 



Program Description and Availability 



3. This section contains a brief description of the program CAUDAID, 

 version 2.0. The program CAUDAID runs on a personal computer (PC) under the 

 DOS operating system. The program has been tested on a variety of PC systems. 

 The installation instructions and late revision notes for the program are 

 contained in a file called READ. ME on the distribution disk. The program 

 contains context-sensitive help screens that can be accessed by pressing the 

 ALT-H key combination. Version 2 of CAUDAID is currently in beta testing and 

 a beta version of the program can be obtained directly from the author. 

 Version 3 of the program, which is under development, will include results 

 from dolos parametric physical model tests, dolos impact response, and 

 reinforcement/strength enhancement optimization. 



Al 



