Ebaa – The European Business Aviation Association – Homepage

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Why is the thrust force due to velocity not factored into the analysis? The “Project Name” and “Site Name” fields on the calculator input screen are simple text fields that you can use to input that information. What about water hammer? Water hammer is a factor that needs to be taken into account when specifying and designing the various components of a water system.

The design of the restraint length requirements does not need to accommodate water hammer for two reasons. During this pressure test the internal pressure is static and water hammer is not a factor. As a result, the duration of the pressure increase is too short to have much of an effect on the restraint design of the pipeline.

Do I need to calculate restraint lengths for each fitting in a large water main contract? If not, what general recommendation would you include in the contract specs? There are municipalities that require specific restraint length calculations for each fitting within a system and others allow for a table of restraint lengths to be utilized throughout a project. A restraint length table is an option that can be applied to systems where conditions are relatively consistent from beginning to end.

Is there a specific app available in the Apple App Store or Google Play for this restraint calculator? No, but the program can be accessed from any device that can access the internet. Is there a way to have user input soil data? Not at this time. Is there any way to use the calculator without internet access? Because of the proliferation of operating systems it is currently only available via the internet.

The primary difference comes in the soil values that are used in those equations. Since , DIPRA has incorporated some slight changes to some of the design equations and has also added some fitting configurations. Potyondy developed friction values for a variety of materials used in pilings. The friction values for polyethylene encased pipe were assumed to be a uniform reduction factor applied to the soil friction based on some field observations and, the clay soils within the DIPRA method are assumed to be saturated.

The EBAA design program assumes clay soil installations to be non-saturated. The soil values in the EBAA program utilize frictional values that were derived from soil box studies performed on surfaces of ductile iron pipe, ductile iron pipe wrapped with polyethylene, and PVC pipe and several different soils. When the calculation result is shown, is the “Thrust” value the same as that used to design thrust blocks? The resultant thrust forces are the same. Can I save my work inside the calculator?

Doing this will place the calculation in the project database. Once you have finished you calculations the contents of the database can be extracted through the “Spreadsheet” option at the top of the calculator.

What are the cost savings of using a restrained system versus concrete thrust block? The savings vary widely from location to location and situation to situation so it is difficult to quantify in a general way. The variations in pressure, size, soil conditions and labor and material costs all come into play. There have been some non-published studies that suggest that, when all factors are considered, a properly restrained pipeline can cost about half of the same pipeline with thrust blocks.

Is there anything to gain by installing both thrust blocking and thrust restraint? Doing so increases the overall costs and there is no real way to assign a portion of the resultant thrust force to the thrust block and the rest to the restrained piping.

When the calculated value indicates a restraint length requirement of 16 feet on each side of a bend, does that mean that each of the pipe joints 20 feet away needs to be restrained in addition to those at the fitting?

The intent is to restrain every joint within 16 ft of the fitting. Additional restraint is not needed to meet the restraint length requirements. I need to test a portion of my piping with the joints exposed.

How do I design for that? The portion of the piping that must be exposed should be fully restrained. Additionally, the remaining piping in the soil should be evaluated and treated as dead ends to avoid transferring thrust forces from the buried portion of the pipeline to the non-buried portion. This is also true any time a portion of a pressurized pipeline must be exposed and potential modifications could alter how the piping reacts to thrust loads.

As with water hammer, the restraint length requirements are based on the system test pressure. When the system is tested the water is not moving, therefore, velocity is not a factor.

EBAA Iron Restraint Length Calculator v7.1.3

Ebaa

Here are the features you will see with EBAA Iron’s Restraint Length Calculator (RLC) v7.1.3: 100% Web-Based for compatibility with today’s PCs, Macs, Tablets and Smartphones; No need to download …

https://rlc.ebaa.com/

EBAA Iron Restraint Length Calculator v7.1.3

Ebaa

The soil values in the EBAA program utilize frictional values that were derived from soil box studies performed on surfaces of ductile iron pipe, ductile iron pipe wrapped with polyethylene, and PVC pipe and several different soils. These studies were performed at EBAA …

https://rlc.ebaa.com/calculator.php

EBAA Learning: Home

1101 17th Street NW, Suite 400, Washington DC 20036 phone 202.775.4999 fax 202.429.6036

https://eyelearn.restoresight.org/

EBAA Iron Megalug® Ductile Iron Mechanical Joint Restraint …

EBAA Iron Megalug® Restraint and Accessories for IPS O.D. (Class) PVC Pipe at Mechanical Joint Fittings. Call for Pricing. EBAA Iron Megalug® Bell Restraint Harness for PVC Pipe. Starting at $188.60. EBAA …

https://www.ferguson.com/product/ebaa-iron-megalug-ductile-iron-mechanical-joint-restraint-e1100/_/A-ProdFamily-193157

European Business Aviation Association – Wikipedia

European Business Aviation Association or EBAA, is a non-profit association based in Belgium that has existed since 1977. Its 684 member companies span all aspects of the business aviation sector in Europe and elsewhere. The EBAA…

https://en.wikipedia.org/wiki/European_Business_Aviation_Association

Home – Eye Bank Association of America

The Eye Bank Association of America (EBAA), a nonprofit member-based association dedicated to the restoration of sight worldwide, today launched its Ocular Network Exchange, also known as ONE, to help member eye banks provide higher quality ocular tissue to surgeons and to find the best possible use for donated corneas.Estimated Reading Time: 1 min

https://restoresight.org/

Electronics, Cars, Fashion, Collectibles & More eBay

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Buy & sell electronics, cars, clothes, collectibles & more on eBay, the world’s online marketplace. Top brands, low prices & free shipping on many items.

https://www.ebay.co.uk/

Ebaa News Agency – Wikipedia

The Ebaa News Agency is a media outlet linked to Hayat Tahrir al-Sham and reports on events surrounding the group, and the civil administration linked to the group, the Syrian Salvation Government.. Background. The Ebaa News Agency …

https://en.wikipedia.org/wiki/Ebaa_News_Agency

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