[PDF] Explanatory document for ISPM 15 (Regulation of wood ... - IPPC
This section covers design considerations for defining the layout and ... Rubble mound breakwaters are structures built mainly of quarried rock. ..... thickness of primary armour and underlayers etc) should first be determined by using the ...... concrete armour unit, without core or filter layers, in order to achieve a high porosity.
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smhv's website is smhv.nl