An attachment is provided for connecting two building members together such as a header and an adjoining support member. The system provides a framework for adaptively scheduling asynchronous file system operations, managing multiple key resources of the distributed file system, including network bandwidth, server IO, server CPU, and client and server memory utilization. The controllable phase andor amplitude adjusting elements are controlled by a processor for tracking the main receiving direction azimuthally in the direction of a fixed station with the help of a tracking signal. The support system may have one or more larger fluid filled chamber is disposed amongst said matrix of chambers.