{"id":4938,"date":"2023-07-04T15:11:03","date_gmt":"2023-07-04T15:11:03","guid":{"rendered":"https:\/\/asp.denireilly.com\/New\/?page_id=4938"},"modified":"2023-07-07T10:38:21","modified_gmt":"2023-07-07T10:38:21","slug":"dredge-surveys","status":"publish","type":"page","link":"https:\/\/asp.denireilly.com\/index.php\/dredge-surveys\/","title":{"rendered":"Dredge Surveys"},"content":{"rendered":"
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Dredge Surveys & Modelling<\/span><\/h3>\n <\/div>\n <\/div>\n
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AS AN INDEPENDENT SURVEY COMPANY WITH OVER 20 YEARS OF EXPERIENCE IN PROVIDING HIGH-RESOLUTION MULTIBEAM DATA TO MONITOR DREDGING WORK, WE ENJOY A WELL-ESTABLISHED REPUTATION FOR HONEST AND ACCURATE REPORTING AMONGST DREDGING COMPANIES AND END-CLIENTS ALIKE.<\/strong><\/h5>\n

Port and Harbour authorities have an obligation with respect to the Port Marine Safety Code to routinely survey their marine areas of responsibility to maintain safe passage and navigation, and in this regard engage dredging contractors\n to maintain desired water depths utilising modern marine plant and equipment.<\/p>\n

Prior to commissioning any dredging works it is essential that there is an agreed baseline to enable progress to be monitored and we have the personnel, equipment and expertise to undertake a wide range of dredging support services,\n including pre & post dredge surveys and associated volumetric calculations, for both capital and maintenance campaigns.<\/p>\n

These can be undertaken in any environment including canals and waterways, coastal regions, congested harbours and approach channels with 24 hour support available where required.<\/p>\n

Equipped with software enabling 3D dredge models to be created, we can provide detailed and accurate volume calculations, quantify the amount of material removed and show areas of accretion or erosion.<\/p>\n

In the image shown above Left, each of the coloured areas represents a different dredge level in a relatively complex dredging campaign, with the software used to calculate side slopes at any desired angle between areas of differing\n levels. Modern multibeam surveys provide a detailed 3D model of the seabed.<\/p>\n

It is routinely accepted that data sets at 0.5m post spacing are issued as a standard output for dredging works, which is then used to create a very detailed 3D difference model between the current survey and the dredge model, referred\n to as an isopachyte, used in the calculation of dredge volumes.<\/p>\n

This approach is far superior to previous sectional methods, allowing a very well defined measure of the material removed or built up between survey and design model or between successive surveys.<\/p>\n

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Hydrographic Survey Services<\/strong>\n
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