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SPED Tech Tuesday: Design of Expansion Loops

Details: Last Updated: 26 June 2019

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.

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SPED Tech Tuesday: Auxiliary Pipe Supports - Consider the Cost

Details: Last Updated: 26 June 2019

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.

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