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SPED Tech Tuesday: Design of Expansion Loops

 

Design Quality Improvement – Bulletin 02 4/29/19 Prepared by – Todd Sisti, PE

 

Design of Pipe Expansion Loops

 

 

Quality Concern:

 

What is the practical range of axial pipe line growth that a designer should plan for in the design of an expansion loop?

 

  • In Case 1 below the expansion loop is absorbing up to 20” (10” per side) of pipe line growth without a resulting pipe stress problem.

  • In Case 2 multiple expansion loops are designed which absorb only 1” to 2” of axial line growth.

 

Read more: SPED Tech Tuesday: Design of Expansion Loops
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SPED Tech Tuesday: Auxiliary Pipe Supports - Consider the Cost

 

Design Quality Improvement – Bulletin 01 4/29/19 Prepared by – Todd Sisti, PE

 

AUXILIARY PIPE SUPPORTS – CONSIDER THE COST ($)

 

Quality Concern:

 

Auxiliary Supports are sometimes referred to as Engineered Supports, or Special Supports. Regardless of what you call them, these supports are custom designed for a specific application. Sometimes they are used as a gang support to support many lines, and other times they are custom to support a special pipe stress need. Regardless of the need, the support designer should consider the cost of the design of the support and plan for economics in design.

 

Read more: SPED Tech Tuesday: Auxiliary Pipe Supports - Consider the Cost
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Pyrogel Aerogels with SPED Louisville

 

Please join Louisville SPED for a presentation concerning

Pyrogel Insulation by Aspen Aerogels.

June 6th, 2019 from 12:00 PM to 1:00 PM EST.

 

Read more: Pyrogel Aerogels with SPED Louisville
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Potential Flow Simulator

 

Have some fun with a potential flow simulator with curl noise. This is by Ricky Reusser and is done with HTML, CSS and Javascript.

 

Try adjusting the parameters wit the controls at the upper left of the screen.

 

 

Read more: Potential Flow Simulator
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Piper Boot Camp Course Notes Update

 

SPED has prepared an update of the course notes for the Piper Boot Camp.  In a total of 118 files, these notes are significantly improved over the last release.

 

They feature:

 

  • A more logical division of topics into each file.
  • Module Objectives
  • Quality Assurance that objectives are satisfied by module content

 

SPED is making these updated course notes available for free to video licensees whose video versions (2012 Release) are up to date and Corporate Memberships are in good standing.

 

If you are not using the latest release of SPED videos, please This email address is being protected from spambots. You need JavaScript enabled to view it. for a quotation to bring them up to date.

 

Once your video version and membership status are confirmed, we will email you downloading instructions.

 

Thank you for your support of SPED.

 

 

Read more: Piper Boot Camp Course Notes Update
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Building Services Piping Has Softer Design Requirements

 

Rogin Says Milder HVAC/Plumbing Conditions Soften Design Requirements

 

 

Industry Expert Marty Rogin, PE, says that the milder fluids and environments of HVAC, Plumbing and Fire Suppression Systems pipe allow for simpler design analysis and installation documentation. The favorable conditions allow building designers to outsource the detailed design of HVAC, Plumbing and FSS pipe as a “Delegated Design” resulting in schedules of guides, supports and expansion joints. “We generally only consider pipe expansion, with seismic loads where required,” said Rogin. SPED Update interviewed Mr. Rogin at his office at Metraflex in Chicago, IL.

 

Read more: Building Services Piping Has Softer Design Requirements
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