Abstract: A modular decking system particularly adapted for use with docks in tidal coastal environments is presented. The system provides removable modular decking sections that allow the user to remove the decking prior to a large storm, preventing destruction of the dock by the hydraulic forces of violently rising water. Alternatively, the system may be used in a residential or commercial situation allowing the user to install decking over an area that typically requires access, such as over a flat roof or over areas containing buried services such as cables or piping. The system comprises a number of decking sections that are used with a conventional joist system. Each section includes a plurality of planks that are joined together in parallel to rails that hold the planks together during transportation, installation and removal of the decking sections. A joist cap is provided over each supporting joist, and clamping mechanisms are provided to secure the decking sections to the joist system.