ULTRA FLO® Storm Sewer Pipe
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ENGINEERED SOLUTIONS ULTRA FLO® Storm Sewer Pipe PIPE SOLUTIONS

ULTRA FLO® Storm Sewer Pipe ULTRA FLO® Advantages: • Long history of proven performance • Superior hydraulics (Manning's "n" of 0.012) • Faster/lower-cost installation than concrete pipe • Structural strength • Available in a wide variety of materials to meet environmental and service life requirements. Superior System Hydraulics Research at Utah State University shows that ULTRA FLO Storm Sewer Pipe, with a Manning's "n" of 0.012, is hydraulically equivalent to reinforced concrete pipe. The Water Research Laboratory performed hydraulic tests on ULTRA FLO spiral-rib pipe with 3/4" x 3/4" x...

Cost Savings Installed Cost Savings Millions of feet of ULTRA FLO have been installed in thousands of storm sewer projects nationwide, providing significant cost savings while meeting owners' structural, hydraulic, and service life requirements. Reduced excavation because of the smaller outside diameter of ULTRA FLO. Both steel and aluminum ULTRA FLO weigh less than 10% of concrete pipe. Coupling bands do not require special skills or tools; Contech's QUICK STAB® joint is also available upon request. Twenty-foot standard lengths mean fewer joints and faster installation; longer lengths are...

Structural Strength ULTRA FLO has undergone structural tests and analysis to confirm effective section properties (see ASTM A 796 and B 790). The resulting section properties and ASTM design procedures were used to derive the allowable height of covers shown in Tables 4 through 9. Durability Corrugated metal pipe has been in use for over 100 years. Today, Contech offers a variety of coatings and material types to meet the required service life of your project, including: • Galvanized Steel • Aluminized Steel Type 2 (ALT2) • Polymer Coated • Aluminum • Asphalt-Coated • Asphalt-Coated with...

GALVANIZED, ALT2 OR POLYMER COATED ULTRA FLO H 20 AND H 25 LIVE LOAD 1. The tables for Steel H 20 and H 25 loading are based on the NCSPA CSP Design Manual, 2008 and were calculated using a load factor of K=0.86. The tables for Steel E 80 loading are based on the AREMA Manual. The tables for Aluminum HL 93 loading are based on AASHTO LRFD Design Criteria. 2. The haunch areas of a pipe-arch are the most critical zone for backfilling. Extra care should be taken to provide good material and compaction to a point above the spring line. 3. E 80 minimum cover is measured from top of pipe to...

Bell & Spigot Joint Fittings Contech's innovative QUICK STAB Bell & Spigot joint is 50% faster than standard bands in joining sections of pipe. There are no bands and no bolts to handle. ULTRA FLO pipe arrives at the job site with the QUICK STAB bell already on one end. Simply position the gasket on the spigot end and insert pipe section into the adjoining QUICK STAB bell. QUICK STAB is readily available in 18" through 60" diameters. Corrugation to Engage Pipe End Contech's HUGGER Band offers simple installation and excellent pull-apart resistance for special design projects. The HUGGER...

Relining and Rehabilitation Restoration of failed or deteriorating pipe can be accomplished by relining with ULTRA FLO. Its low-wall profile may yield an inside diameter that approaches the original pipe, while the hydraulic capacity is improved. ULTRA FLO’s light weight makes the lining process easier and can be provided in various lengths to meet individual site conditions. Trench Installation Overview Millions of feet of ULTRA FLO have been installed in a variety of storm sewer projects across the United States. Like all pipe products, proper installation is important for longterm...

Specification for ULTRA FLO Scope This specification covers the manufacture and installation of the ULTRA FLO Pipe detailed in the project plans. Installation Shall be in accordance with ASTM A 798 and A 796 (steel) and B 788 and B 790 (aluminum) and in conformance with the project plans and specifications. If there are any inconsistencies or conflicts, the contractor must bring them to the attention of the project engineer. It is always the contractor’s responsibility to follow OSHA guidelines for safe practices Material The pipe material shall be: 1. luminized Steel Type 2 (ALT2) A 2....