TUPSET - PVC Tube Settler Specification S P E C I F I C A T I O N S F O R T U B E S E T T L E R S Y S T PVC MATERIAL TUBE SETTLERS Under this section of the specification, the contractor shall install a tube settler system in approximately _____ square feet of the sedimentation basins as described herein and as shown in the contract drawings. It is the intent of the specifications that the equipment, when installed in accordance with the drawings and the manufacturer's recommendations will permit efficient operation at the design flow of ____ GPM. Such equipment shall consist of a number of tube-like channels at least 4.0 square inches in cross sectional are being approximately (2' - 0") (3' - 0") long and orientated at approximately 60° from the horizontal to assure that the settled particles will be purged from the tubes by force of gravity alone. The tube settler system shall be manufactured by a company that is regularly engaged in the manufacture of this product and who can demonstrate its knowledge of the technology, and its competence and expertise in the field. All components of the system shall be provided by a single manufacturer. It shall be the sole responsibility of the contractor to coordinate all design, fabrication, assembly, and installation of the components in the clarifier. The manufacturer shall submit detailed drawings and design data on all components for the installation. Design calculations for the support structures shall be submitted and sealed by a registered engineer. The tube settler modules shall be as manufactured by TUPSET, Inc. of Salt Lake City, Utah. MATERIALS AND FABRICATIONS The materials of construction for the tube settler modules shall be Polyvinyl Chloride (PVC) and shall be strong, rigid, resistant to chemical deterioration in an outdoor environment. PVC MATERIAL The resin utilized shall be prime grade, virgin, high impact, and have the following physical characteristics: The tube settler module shall be built up of a number of corrugated sheets with alternately placed flat sheets. The individual sheets shall be solvent welded to provide strong continuous bonds and thereby form a durable homogenous structure with each tube being continuos and imperforate, eliminating mixing currents that resuspend settled solids within the tube. The corrugated sheets shall have the inclined channel configurations molded integrally therein, so that all the tubes shall have the same angle of inclination when installed in the basin. The finished (after thermoforming) thickness of the plastic used in the modules shall not be less than twenty (20) mils, and twenty-five mils for the corrugated and flat sheets respectively. The edges of the plastic shall be clean, smooth, and free from burrs caused by sawing or trimming the parts to minimize the possibility of sludge buildup or growth. The completed modules shall have a minimum height of (19.5") (30") and be manufactured to the necessary widths and lengths to minimize field modification.