ABOUT EBAA IRON
EBAA Iron, Inc. is an industry leading manufacturer of external pipe joint restraint devices that are specifically designed for use on pressurized or non-pressurized waterworks piping systems. Since 1964, EBAA has been a proud privately-held and family-owned N. American based company currently Headquartered in Eastland, TX.
The guiding principles of our founder, Mr. Earl C. Bradley, has continued to lead us in providing innovative piping products primarily for use in the water and wastewater industries. EBAA products are designed and engineered to not only save time and money from their initial date of installation - but more importantly, our products are designed with the intent that they must also protect and ensure the long-term integrity of the piping system.
EBAA is the original manufacturer and patent holder of the world famous MEGALUG® Mechanical Joint Restraints, the MEGAFLANGE® Restrained Flange Adapter, the MEGA-COUPLING® Restrained Pipe Coupling and the wide array of FLEX-TEND® Flexible and/or Expansion Joint family of products.
EBAA is also proud to proclaim that all of its pipe restraint products are 100% MADE IN USA - 100% of the time, every time!
Flexible Expansion Joints Provide Protection For Pipelines Subject To Subtle Or Sudden Movement
Flex-Tend flexible expansion joints have a proven record of providing protection for pipelines subject to subtle or sudden movement. As with all products used in the water and wastewater industry, protection is optimized with the selection of the proper assembly incorporated into a sound design. This paper is intended to provide assistance in both of these areas.
How Does The Force Balanced FLEX-TEND® Product Work?
There are numerous configurations of flexible and expansion joints available to the design engineer. They include bellows joints, flexible hoses, bolted-mechanical couplings, and ball joints. In 1989 EBAA Iron, Inc. introduced the FLEX-TEND® joint (FT) flexible expansion joint product into the US market. Constructed of ductile iron, the product is comprised of two ball joints joined by an expansion joint. For the first time one product was available to protect pipelines and pipeline connections from differential movement resulting from seismic activity and soil expansion/contraction in areas of poor soil support, frost heave, and transitions from stable to unstable areas.
FLEX-TEND® Flexible Expansion Joints, Features And Specifications
FLEX-TEND® flexible expansion joints are designed to protect structures and pipelines from differential movement whether this movement is earthquake induced or the gradual motion of soil subsidence. This bulletin offers a concise listing and discussion of the important features and materials of the double and single ball assemblies.
Restrained Pipeline Design And Horizontal Bends
In the last forty years, a quiet revolution has occurred in our industry. This revolution is the result of new generations of joint restraint products that make it possible to quickly and safely restrain fittings at bends, dead ends, tees, valves, and reducers without the need for concrete thrust blocks or tie rods. These joint restraint products turn the pipeline into its own thrust block. The key to utilizing these new products is the understanding and proper application of the pipeline restraint design theory.
The Merriam-Webster Online Dictionary defines traceability as “a: to follow the footprints, track, or trail of b: to follow or study out in detail or step by step… c: to discover by going backward over the evidence step by step … d: to discover signs, evidence, or remains of”. At EBAA Iron traceability allows you as the end user or us as the manufacturer to go backward into the production process and discover the signs that reveal the casting properties to the base level.
Joint Restraint vs. Thrust Blocks
The question often arises “Can you really eliminate thrust blocks using joint restraint?” This bulletin will provide you with the information needed for you to realize the answer to that question is “yes”. For many years, thrust blocks have been successfully used in distribution systems all over the world. Thrust blocks, however, are not without limitations.
Thrust Restraint Design Equations And Soil Parameters For Ductile Iron And PVC Pipe
These equations and soil parameters are an effort to provide the piping system designer with conservative techniques and parameters for the design of underground restrained joint piping systems. They utilize recognized design equations and conservative soil parameters. The design equations in this handbook have proven useful in a wide variety of applications since 1982. The soil parameters presented include the results of an extensive study of the actual frictional performance of soils on ductile iron, ductile iron encased with polyethylene, and PVC pipe.
Thrust Resistant Design Of Dead Ends, Valves, Reducers, And Encroaching Restrainted Lengths
This bulletin describes the restrained length calculations for dead ends, valves, reducers, and sleeves with a discussion of several situations where economics and other factors may favor an alternate restraint method. Consideration overlapping or encroaching restrained lengths and of restrained piping having expansion joints and repair clamps is also discussed.
Thrust Restraint Design Of Vertical Offsets And Tees
There are numerous fitting combinations and configurations that are used in the everyday construction of pressurized water lines. This report describes vertical offsets, tees, and using joint restraint products to simplify their installation. The use of joint restraint products virtually eliminates thrust blocks and tie rods.
Bridge Crossings And The Proper Use Of EX-TEND®, FLEX-TEND®, And Force Balanced FLEX-TEND Products
Bridges can serve as very convenient structures for routing utility piping over obstacles such as rivers, canyons, or highways. Where allowed, there can be multiple lines utilizing the crossing. Of particular interest for this discussion is the locating of pressurized water lines on and under bridge structures. Pressurized pipelines can present a number of unique challenges to the design engineer and utility owner.
Bearing And Frictional Resistance: The Building Blocks Of A Restrained System
Connections bulletins PD-1 through PD-4 discuss some of the specific applications of the design of a properly restrained pipeline. PD-2 specifically addresses horizontal bends and the various parameters involved in the design process. PD-3 applies those parameters to the design of vertical offsets and tees. Finally, the design of reducers, dead ends, and miscellaneous fittings is discussed in PD-4. This bulletin delves into a more detailed discussion of the bearing and frictional resistance forces at work to balance thrust forces generated in pressurized pipelines. To see how this information relates to the various pipeline elements, please refer to the other Connections bulletins.