Pipe

December 2008 » PROGRESSIVE ENGINEERING TECHNOLOGY
As the backbone of wastewater and stormwater collection and potable water distribution systems, pipe and related products are integral to well-designed and high-performing public infrastructure. In response to a request from CE News, companies provided the following information about their pipe products. Company web addresses are provided for immediate access to additional information.

As the backbone of wastewater and stormwater collection and potable water distribution systems, pipe and related products are integral to well-designed and high-performing public infrastructure. In response to a request from CE News, companies provided the following information about their pipe products. Company web addresses are provided for immediate access to additional information.

Advanced Drainage Systems, Inc.’s (www.ads-pipe.com) next generation of pipe called N-12 HP (High Performance) will be available in early 2009 in diameters up to 60 inches. It will feature triple-wall construction and a smooth exterior wall design supported by a corrugated structural core that, according to the company, provides improved stiffness and greater beam strength to minimize deflection, sheds point load while also providing enhanced jobsite durability, and eases backfill installation. The N-12 HP’s smooth interior wall will incorporate a dual-banded, extended bell and spigot with two gaskets. Standard length will be 20 feet, with shorter lengths available for trench box, deep burial installations.

The American Water Works Association (www.awwa.org) recently published the fully updated Third Edition Concrete Pressure Pipe (M9), reflecting the most current, industry-approved engineering and design practices for the manufacture and use of concrete pressure pipe in water supply service. According to AWWA, the manual provides all of the supplemental information engineers and designers need to achieve optimal field performance of concrete pressure pipelines. The manual was reviewed and approved by the AWWA Standards Committee on Concrete Pressure Pipe. Additionally, Concrete Pressure Pipe (M9) includes the Guide Specifications for Purchasing and Installation of Concrete Pipes. Concrete Pressure Pipe (M9) is available from AWWA’s online bookstore at www.awwa.org/bookstore.

Americast, Inc. (www.americastusa.com) said it achieved Cradle-to-Cradle Silver Certification from McDonough Baungart Design Chemistry for its reinforced concrete pipe. According to the company, it is the first and only manufacturer of reinforced concrete pipe to achieve this recognition, which requires that products are manufactured in an environmentally responsible manner, that they are free of dangerous toxins, and that they are capable of being effectively reused once the designed useful life has ended. The U.S. Green Building Council endorses Cradle-to-Cradle certified products in its LEED certification criteria and awards a LEED Innovation point to projects using a percentage of Cradle-to-Cradle certified products.

CertainTeed Corporation’s (www.certainteed.com) CertaFlo GreenLine pipe is supplied in standard green color and shorter lengths for ease of use on sewer pipebursting projects. According to the company, CertaFlo GreenLine holds precise grade because of PVC’s stiffness. Certa-Lok products require no special heat-fusion equipment, resulting in labor and money savings. Joints are assembled as the directional drilling or pipebursting pullback continues, so long strings of pre-fused pipe are not necessary, meaning streets remain open and clear. In addition, higher-strength PVC requires a thinner wall than alternative thermoplastic pipe to achieve the same mechanical properties, resulting in improved flow performance and efficiency.

CONTECH Construction Products Inc.’s (www.contech-cpi.com) DuroMaxx reinforced storm drain pipe has steel reinforcing ribs that provide strength, while its high-density polyethylene resin (HDPE) provides durability. According to the company, DuroMaxx exceeds existing HDPE pipe performance by offering RPE (Reinforced Polyethylene), a process to introduce steel ribbing in the pipe, resulting in higher strength, durability, and flow rates in a watertight bell and spigot joint system. It is suitable for both drainage and detention applications. In addition, CONTECH provides a variety of corrugated metal pipe, bands, and fittings for culverts, storm sewers, and conduits, as well as a broad array of plastic solutions including PVC profile wall pipes, solid wall pipes, and composite pipes for sanitary and drainage applications.

Envirosight (www.envirosight.com) says its QuickView 3.5 pipeline zoom inspection camera offers double the zoom capability, more illumination, and improved camera sensitivity for low-light viewing, compared with previous models. According to the company, enhanced performance allows an operator to see as far as 400 feet down a typical 18-inch-diameter line, all while capturing sidewall detail. QuickView 3.5’s zooming capability provides 400 times magnification. Its new lamp technology casts focused illumination that is 65-percent brighter, without draining the rechargeable battery before completing a full shift’s worth of inspection work.

Hancor, Inc.
(www.hancor.com) offers Blue Seal high-density polyethylene (HDPE) pipe, available in 4- to 60-inch diameters. It is a gravity flow, watertight pipe that is designed for storm sewers; detention systems; and cross, slope, or edge drains. Its integral bell-and-spigot system uses a polymer composite fused to the outside of the bell with a patented, factory-installed gasket. According to Hancor, the coupling system maintains bell dimension after pressurization, providing uniform tolerances to ensure the highest consistent performance.

HOBAS (www.hobaspipe.com) says its centrifugally cast pipe has inherent corrosion-resistance, high strength-to-weight ratio, and a smooth surface that makes it ideal for sewers, wastewater, stormwater, and potable water applications. The, fiberglass-reinforced, polymer mortar pipe is suitable for open cut (direct bury), sliplining, jacking or microtunneling, tunnel lining, and above-ground applications. According to the company, leak-free, push-together, 20-foot joints reduce installation time and costs. Pipe diameters range from 18 to 110 inches for both pressure and gravity applications. HOBAS potable water pipes and joint gaskets have been tested and comply with NSF standard 61 for drinking water components.

Lane Enterprises, Inc. (www.lane-enterprises.com) manufactures a corrugated metal pipe (CMP), underground sand filter for stormwater in standard circular shapes or arched-pipe shapes, depending on the height of cover limitations. Aluminized and polymer pipe coatings are available. The CMP sand filter is a three-chamber system comprising a sediment chamber, a sand bed filter, and a clear well. The filter bed is 18 to 24 inches deep and may have a protective screen of gravel or permeable geotextile to limit clogging. The filter bed includes an underdrain that discharges filtered stormwater into the clearwell. An in-line configuration within a typical 8-foot-diameter pipe allows flows that exceed the filter bed capacity to be bypassed internally.

Logan Clay Products Company (www.loganclaypipe.com) says its clay pipe, featuring a long life cycle, abundant raw materials, and energy-efficient production, is the most sustainable sewer pipe available. According to Logan Clay, vitrified clay pipe manufactured today does not deform, corrode, leak, or allow root intrusion and will be an asset to municipalities specifying clay for hundreds of years.

The first edition of the National Corrugated Steel Pipe Association’s (www.ncspa.org) Corrugated Steel Pipe Design Manual is the result of an extensive review and update of products and methods that are currently used. The manual emphasizes many applications of corrugated steel products and focuses on special design considerations, rehabilitation, and maintenance of steel pipe. Significant updates reflect the NCSPA’s current durability guidelines. According to NCSPA, the versatility of corrugated steel pipe, invented in 1896, allows designers flexibility to match the right product with the application in drainage and non-drainage applications.

Plastics Pipe Institute (www.plasticpipe.org) recommends replacing crumbling, degrading, or inferior stormwater systems with corrugated HDPE pipes to stretch budgets and conserve natural resources while building infrastructure that will last for generations to come. According to PPI, HDPE corrugated pipe is economical to transport and install, tough and durable to deliver long service life, abrasion and corrosion resistant, and provides outstanding joint performance. Additionally, it is ecologically friendly during manufacturing and provides protection from contamination during service, PPI says.

Prinsco, Inc. (www.prinsco.com), which manufactures HDPE pipe in sizes ranging from 3 inches to 60 inches in diameter, opened a new manufacturing and distribution facility in Fresno, Calif., its first venture into the West Coast market. In addition, the company has plants in Minnesota, Illinois, Iowa, and Missouri. Prinsco offers ECOFLO, a dual-wall pipe manufactured from an engineered blend of HDPE containing a minimum of 50-percent recycled content. According to the company, ECOFLO meets or exceeds all the same performance requirements of its non-recycled pipe, but is made from recycled plastic.

U.S. Composite Pipe, Inc.’s (www.uscompositepipe.com) steel-reinforced polymer concrete pipe contains selected blends of aggregates and fillers held together with a high-strength, corrosion-resistant, thermosetting resin binder. According to the company, typical polymer concrete compressive strength is between 9,000 pounds per square inch (psi) and 13,000 psi; flexural strength ranges from 2,000 psi to 3,000 psi. The pipe and precast products—designed for pump stations, manholes, custom structures, jacking pipe, tunnel segments, and direct-bury pipe—can be used in environments with a PH range from 1 to 13 without coating or lining.

U.S. Pipe (www.uspipe.com) offers a high-pressure restrained joint that is stronger, easier, faster, and more reliable to install, according to the company. The patented locking mechanism provides a pressure rating of 350 psi. A single ductile iron locking ring engages virtually the entire circumference of the weld bead for improved joint performance. The new high-pressure joint uses a TYTON gasket to provide a simple, reliable seal. Where field cuts are required in the restrained portion of the line, a procedure can be provided to weld a steel bar on the plain end of the field cut pipe. Total joint deflection is plus or minus 1/2 degree. Proof of design testing was conducted on pipe joints, 90-percent bends, and equal opening tees at the company’s technical services facility using twice the rated working pressure of the pipe and at least three times the rated working pressure of the fittings.


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