<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>CR4 - Section&#x3a; General Discussion</title><link>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;section&#x2f;general-discussion</link><description><![CDATA[The General section of CR4 is essentially a catch-all.  It includes forum and blog entries about subjects on the fringe of core engineering&#x3b; such education and training, management, your job, the sciences, history&#x3b; as well as anything that is &#x2018;not engineering&#x2019; &#x2013; sports, TV and movies, music, urban legends, etc. ]]></description><copyright>Copyright 2026</copyright><pubDate>Fri, 11 Sep 2026 13:53:49 EST</pubDate><generator>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com</generator><item><title><![CDATA[Obsolete Word Meanings]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151708&#x2f;Obsolete-Word-Meanings&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[This is not an engineering question, but you guys and gals have a wide range of experience, so I expect a reply. &#x28;It may be a stretch, but this may be an engineering question that deals with the bell suspension. &#x28;That&#x26;rsquo&#x3b;s a hint about my own suspicions&#x21;&#x29;&#x29;&#xa;&#xa;Please translate the following words in]]></description><pubDate>Fri, 11 Sep 2026 13&#x3a;53&#x3a;49 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151708&#x2f;Obsolete-Word-Meanings]]></guid><dc:creator>Lehman57</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Sharing a Feed]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151690&#x2f;Sharing-a-Feed&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[How can I share a Feed to an unsubscribed person&#x3f;]]></description><pubDate>Wed, 26 Aug 2026 08&#x3a;02&#x3a;01 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151690&#x2f;Sharing-a-Feed]]></guid><dc:creator>yesyen</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Hacked&#x3f;&#x3f;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151688&#x2f;Hacked&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[For Hush or anyone,&#xa;&#xa;I tried twice to make a reply and both took me instead to a spam site--&#x22;Your computer has been locked up . . .&#x22;&#xa;&#xa;Could CR4 have been hacked&#x3f;]]></description><pubDate>Tue, 25 Aug 2026 17&#x3a;08&#x3a;37 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151688&#x2f;Hacked]]></guid><dc:creator>Lehman57</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Turning Industrial Waste into High-Value Green Building Materials&#x21;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151647&#x2f;Turning-Industrial-Waste-into-High-Value-Green-Building-Materials&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Sharing a technical application on converting high-moisture industrial solid waste &#x28;ceramic residues, soil spoil, and waste gypsum&#x29; into high-strength green building materials &#x28;paving stones, curbstones, and permeable bricks&#x29;.&#xa;&#xa;Moisture &#x26;amp&#x3b; Strength Fluctuations&#x3a; Variable moisture in waste gypsum&#x2f;]]></description><pubDate>Thu, 13 Aug 2026 02&#x3a;28&#x3a;35 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151647&#x2f;Turning-Industrial-Waste-into-High-Value-Green-Building-Materials]]></guid><dc:creator>Evelyn Li</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[How Should SS 316 Capillary Tubing Be Specified for Instrumentation&#x3f;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151639&#x2f;How-Should-SS-316-Capillary-Tubing-Be-Specified-for-Instrumentation&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[For an instrumentation application requiring small-diameter stainless steel tubing, what are the most important parameters to define when specifying SS 316 capillary welded tubing&#x3f;&#xa;&#xa;Beyond the material grade, should the specification normally address outside diameter, wall thickness, dimensional tol]]></description><pubDate>Tue, 11 Aug 2026 12&#x3a;28&#x3a;15 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151639&#x2f;How-Should-SS-316-Capillary-Tubing-Be-Specified-for-Instrumentation]]></guid><dc:creator>kailashmittal</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Socrates Meets the Age of the Internet]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151636&#x2f;Socrates-Meets-the-Age-of-the-Internet&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[One might consider this a philosopher&#x27;s perspective on the Dilbert comic.]]></description><pubDate>Mon, 10 Aug 2026 14&#x3a;35&#x3a;17 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151636&#x2f;Socrates-Meets-the-Age-of-the-Internet]]></guid><dc:creator>redfred</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Choosing the Right Stainless Steel Tube Fittings for Instrumentation]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151635&#x2f;Choosing-the-Right-Stainless-Steel-Tube-Fittings-for-Instrumentation&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[I&#x26;rsquo&#x3b;m looking into stainless steel tube fittings for an instrumentation setup and wanted to hear how others usually approach the selection.&#xa;&#xa;The part I&#x26;rsquo&#x3b;m finding a little confusing is that there seem to be several things to consider at the same time. Tube size and wall thickness obviously]]></description><pubDate>Mon, 10 Aug 2026 11&#x3a;12&#x3a;05 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151635&#x2f;Choosing-the-Right-Stainless-Steel-Tube-Fittings-for-Instrumentation]]></guid><dc:creator>kailashmittal</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[How Much Structural Headroom Should Colocation Data Centers Allow for AI&#x3f;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151605&#x2f;How-Much-Structural-Headroom-Should-Colocation-Data-Centers-Allow-for-AI&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[I have been looking into how AI workloads are affecting data center design, and one question keeps coming up around structural capacity in colocation buildings.&#xa;&#xa;For a long time, structural design assumptions were relatively stable. Most facilities were built around similar rack densities and coolin]]></description><pubDate>Fri, 17 Jul 2026 09&#x3a;55&#x3a;45 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151605&#x2f;How-Much-Structural-Headroom-Should-Colocation-Data-Centers-Allow-for-AI]]></guid><dc:creator>gbcengineers</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Piping Max Design Temperature Based on Ambient Conditions]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151604&#x2f;Piping-Max-Design-Temperature-Based-on-Ambient-Conditions&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[A large proportion of the piping systems I have viewed recently have ambient temperature as the max thermal condition.&#xa;&#xa;Considering the recent severe climate changes we are experiencing in the UK, it seems 40C is not to far off as an air temperature and looking at Europe&#x27;s experiences, higher 40&#x27;s a]]></description><pubDate>Wed, 15 Jul 2026 15&#x3a;23&#x3a;47 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151604&#x2f;Piping-Max-Design-Temperature-Based-on-Ambient-Conditions]]></guid><dc:creator>Screedie</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[What Usually Makes a PUE Below 1.2 Difficult to Achieve&#x3f;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151585&#x2f;What-Usually-Makes-a-PUE-Below-1-2-Difficult-to-Achieve&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[A PUE below 1.2 is possible, but I would be careful about treating it as a target that can be achieved simply by selecting more efficient cooling equipment.&#xa;&#xa;In practice, PUE is the result of several systems working together. Climate, airflow, power losses, redundancy and actual IT utilisation can a]]></description><pubDate>Wed, 08 Jul 2026 04&#x3a;24&#x3a;18 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151585&#x2f;What-Usually-Makes-a-PUE-Below-1-2-Difficult-to-Achieve]]></guid><dc:creator>gbcengineers</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[The Line Illusion &#x28;September 2026 Challenge Question&#x29;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30543&#x2f;The-Line-Illusion-September-2026-Challenge-Question&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[How many lines are there in these pictures&#x3f; Explain the phenomenon depicted. &#x28;Apologies for the freehand Sharpie&#x21;&#x29;&#xa;&#xa;Figure 1&#xa;&#xa;&#xa;&#xa;Figure 2]]></description><pubDate>Mon, 31 Aug 2026 04&#x3a;00&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30543&#x2f;The-Line-Illusion-September-2026-Challenge-Question]]></guid><dc:subject>Challenge Questions</dc:subject></item><item><title><![CDATA[Chess Test &#x28;August 2026 Challenge Question&#x29;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30542&#x2f;Chess-Test-August-2026-Challenge-Question&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Use the three white pieces to place the black king &#x28;e5&#x29; in checkmate.&#xa;&#xa; &#x2a; You do not need to simulate moves to arrive here.&#xa; &#x2a; Abide standard chess piece movements.&#xa;    &#x2a; King can move one space in any direction, but never into check&#xa;    &#x2a; Rooks can move any number of spaces, but only vertically or]]></description><pubDate>Fri, 31 Jul 2026 04&#x3a;00&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30542&#x2f;Chess-Test-August-2026-Challenge-Question]]></guid><dc:subject>Challenge Questions</dc:subject></item><item><title><![CDATA[Friendly Wager &#x28;July 2026 Challenge Question&#x29;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30541&#x2f;Friendly-Wager-July-2026-Challenge-Question&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Your friend makes a &#x24;250 bet with you.&#xa;&#xa;He will pick a number between 1 and 1,000. If you can guess this number in 10 or less questions or guesses, you win.&#xa;&#xa;Expressed as a percent, what are your odds of winning the &#x24;250&#x3f;&#xa;Answer, updated 7.28.26&#xa;SilvCrow gets it - answer &#x23;2 below.]]></description><pubDate>Tue, 30 Jun 2026 04&#x3a;00&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30541&#x2f;Friendly-Wager-July-2026-Challenge-Question]]></guid><dc:subject>Challenge Questions</dc:subject></item></channel></rss>