FRUSTUM CON BLOCK (FCB) ANTI EROSION AND BREAK WATER MODEL

The atmospheric phenomena added with structures put up to serve humanity for their betterment, change ocean shore lines in the world over and require positive solutions to negate sea erosion more effectively. The need to protect structures and habitations assumes urgency especially after the unforunate “tsunami” December 2004 that surged the shores triggered by a massive undersea earthquake killing thousands of people and devastating the entire shore line, habitations and infrastructure in South East Asian countries. Various types of sea structures like sea mound walls, groynes, bulk heads, revetments using natural rock, concrete blocks, Tetrapods, Acropods, Tetrahedrons have been designed based on experience and empirical formula and laboratory model tests. Though they posses roughness, permeability, dissipate wave energy to a very great extent, but are not amenable for mathematical analysis since there are of different sizes and shapes arranged in regular or pell mell fashion. Hence it is necessary to design blocks of definite geometrical shape that can be assembled systematically that will give high stability value and amenable to numerical analysis and model test as well to make the design quick and pin pointed for any wave force. It is here that the frustum con block (FCB) emerges as the most valuable solution that meets all the requirements to make the most efficient model. It is pertinent to mention here that no other block in use matches with the FCB.

• INTRODUCTION

• INVESTIGATION BY INDIAN INSTITUTE OF TECHNOLOGY (IIT) MADRAS

• REFINED INTERLOCKED MODEL

• CONCLUSIONS

• ACKNOWLEDGEMENTS

• REFERENCES