Print Email Facebook Twitter The notional permeability of breakwaters: Experimental research on the permeability factor P Title The notional permeability of breakwaters: Experimental research on the permeability factor P Author Kik, R. Contributor Stive, M.J.F. (mentor) Uijttewaal, W.S.J. (mentor) Van den Bos, J.P. (mentor) Verhagen, H.J. (mentor) Van der Meer, J.W. (mentor) Maertens, J. (mentor) Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 2011-09-19 Abstract The stability formula developed by Van der Meer is used for the design of different kind of rock slopes. In the formula is among a number of other parameters also the permeability of the structure represented. A more permeable structure has the ability to dissipate more water and therefore more energy, this results into a lower required weight of the armour layer. This coefficient, described as the Notional Permeability P, has been determined for three different types of structures. A homogeneous structure, a structure with a permeable core and an impermeable structure. In practice structures are being build who deviate from these standard situations. Therefore there is a demand for values of P about structures other than the known standard situations. In this thesis P values are found by means of physical scale model tests. First of all two reference structures were tested. The permeable and the impermeable structure with known values of P= 0.5 and respectively P=0.1. The values found in this study are almost equal to the values above. The new structure has an impermeable core covered with a thick filter layer. On top of that an under layer is placed and finally there is a double armour layer. Subject breakwaternotional permeability experimentsvan der Meer To reference this document use: http://resolver.tudelft.nl/uuid:7591bcf7-139a-4b6c-b5c1-721c89dc1e38 Related item https://doi.org/10.4121/uuid:2447c7ea-3c3f-4e70-a7cb-08f217cfa968 Part of collection Student theses Document type master thesis Rights (c) 2011 Kik, R. Files PDF rkik_notional_permeabilit ... 091028.pdf 6.9 MB Close viewer /islandora/object/uuid:7591bcf7-139a-4b6c-b5c1-721c89dc1e38/datastream/OBJ/view