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Society of Piping Engineers and Designers
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Written by Paul Bowers   
Monday, 19 September 2016 21:41


CADWorx and Analysis University Returns to Houston

Article and photo by Bill Beazley

The popular CADWorx and Analysis University (CAU) program has returned to Houston after a few years’ absence. CAU is produced by Intergraph CADWorx and Analysis Systems. The program had been co‐located with the Hexagon Live program in Las Vegas. Hexagon is the parent company of Intergraph.

CAU is known for quality presentations from practitioners who use ICAS tools, including


 - CADWorx


- PVElite

- GT Strudl


Presentations also include add‐ons and complementary software from other vendors.

Many customers had found it hard to gain approval for travel to Las Vegas. In addition, CAU lost its unique and distinctive technical character amongst the broad array of Hexagon products. Hexagon, in addition to Intergraph’s products, offers software and hardware for manufacturing, surveying, mapping and other applications. A large number of Intergraph and ICAS customers work in the Houston area.

CAU 2016 continues for two days followed by a special symposium. For more information, consult:



Last Updated on Tuesday, 20 September 2016 12:27
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Written by Paul Bowers   
Saturday, 17 September 2016 07:07


Houston SPED Chapter Gets Rare Look at Paulin Research

Article and photos by Bill Beazley

The Houston SPED Chapter got a rare look at the laboratories and research results of Paulin Research Group ("PRG").  Lead personally by PRG President, Tony Paulin, SPED members were shown the equipment and test specimens used to develop Stress Intensification Factors (SIFs), monitor crack growth in piping components and vessels, and verify piping deflections predicted by analysis.  PRG also provides FEA software products and consulting services to the pressure vessel and piping industries.  The chapter meeting was September 15.

Mr. Paulin began the meeting with an explanation of why SIFs as calculated by the current B31.3 piping code were inaccurate.  For code fatigue purposes, SIFs are the ratio of the nominal stresses in the component unders study to the nominal stress that will cause failure in a straight pipe at a given number of cycles. Early fatigue based SIFs were first developed in the early 1950s by A.R.C. Markl using tests at Tube Turns.  Everett C. Rodabaugh of Battelle Memorial Institute was on the original Markl team and later improved the equations now used in the code.  Markl’s tests and Rodabaugh’s corrections and enhancements where scaled up from data collected mainly on 4” schedule 40 pipe.

Paulin’s tests now show that the equations that scale up these SIF results to other pipe sizes and wall thicknesses are in some cases overconservative and in some cases unconservative.  Revisions will be coming out soon as ASME B31 J, an ASME standard to produce stress intensification factors (i-factors), flexibility factors (k-factors), and sustained load factors for metallic piping components used in B31 piping analysis.

Paulin’s team including Fred Hendrix, Willy Lock, Dr. Delin Wang, and Jose Del Valle is also studying the growth of cracks in piping components are they progress toward fatigue failure.

The results might be used to predict the risk of failure as a focus of further inspection.

Finally, the attendees were treated to software product expected to be announced at CAU September 19-20.  Mr. Paulin was thanked by SPED Houston Chapter President, Doug Coberly.

Last Updated on Saturday, 17 September 2016 14:33
Houston Chapter Meeting Sept 15 at Paulin Research Group PDF Print E-mail
Written by Paul Bowers   
Thursday, 08 September 2016 06:21

Houston Chapter Meeting Next Thursday Sept 15 at Paulin Research Group


Houston SPED Chapter Meeting
Thursday, September 15,
7pm – 9pm
Hosted by Paulin Research Group
Address: 11211 Richmond Ave # 109, Houston, TX 77082
Phone: (281) 920-9775

6:30-7:00 PM Registration and Shop Tours
7:00-7:30 PM Meeting Call to Order and Host Welcome Ryan Metcalf, Paulin Research Group
7:30-8:30 PM Speaker: Tony Paulin, Paulin Research Group
TOPIC "New advances in Piping Stress and Flexibility Analysis"

Register Here: https://docs.google.com/forms/d/e/1FAIpQLScPvhnRaWd3ZqbUIi2RoRcck6OCQpKo_QYNcqmXq78CibrltQ/viewform?c=0&w=1

SPED Website Memberships and Renewals PDF Print E-mail
Written by Paul Bowers   
Friday, 29 July 2016 08:23

Please be advised that the SPED website is being updated. As a result, visitors wishing to sign up for membership, renew their membership or renew their PPD certification may experience difficulties.


Please email This e-mail address is being protected from spambots. You need JavaScript enabled to view it for any matters related to membership or PPD certification.

PipingTech Pipe Shields Live Webinar PDF Print E-mail
Written by Paul Bowers   
Wednesday, 27 July 2016 04:52

Pipe Shields for Beginners: Insulated Pipe Supports... for Commercial Applications Webinar

Date: Thursday, July 28, 2016

Register for either time slot: 10:00 am OR 2:00 pm CDT

Note: Time Zone is CDT * Central Daylight Savings Time / GMT -6h


This webinar will give you an introduction to Pipe Shields, Inc. and its unique line of pre-insulated pipe supports, slides, guides and anchors that it developed and patented over it's 40 year history. It will cover various designs, commercial applications (chilled and heated water lines, HVAC systems and low pressure steam lines), installation and maintenance procedures and the benefits of using pre-insulated pipe supports (vs. doing insulation in the field). This webinar will be delivered by Albert Dizon, General Manager of Pipe Shields, who has been working with pre-insulated pipe supports for 30+ years. Join us and receive some of his experience and wisdom!


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The Society of Piping Engineers and Designers (SPED) is an international society established to promote excellence and quality in the practice of piping engineering and design. SPED emphasizes education and training to advance the employability and competitiveness of its members.

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