--- title: University of Houston Studies DuraSquirt® Single Pass Flange Tightening description: University of Houston Studies DuraSquirt® Single Pass Flange Tightening image: https://blog.appliedbolting.com/hubfs/UofH.png --- [![Applied Bolting](https://blog.appliedbolting.com/hubfs/image%201-1.png)](https://appliedbolting.com/) [DISTRIBUTOR LOGIN](https://appliedbolting.com/distributor-hub/) [FIND A DISTRIBUTOR](https://appliedbolting.com/distributor-locator/) [CONTACT US](https://appliedbolting.com/contact-us/) [PDH CERT](https://appliedbolting.com/request-a-certificate/) ☰ [Squirter® DTI](https://appliedbolting.com/squirter-dtis/) [Bolting Resources](https://appliedbolting.com/bolting-resources/) [Bolting Methods](https://appliedbolting.com/bolting-methods/) [Manufacturing Specifications](https://appliedbolting.com/wp-content/uploads/2025/10/Direct-Tension-Indicator-DTI-Manufacturing-Standard-Specification-1.pdf) [DTI Dimensions, Standards & Specs](https://appliedbolting.com/wp-content/uploads/2025/10/DTI-DIMENSIONS-PER-APPLICABLE-STANDARDS-AND-SPECIFICATIONS.pdf) [Lunch and Learn](https://appliedbolting.com/lunch-and-learn/) [Tech Support](https://appliedbolting.com/tech-support/) [Careers](https://appliedbolting.com/careers/) [SWAG Store](https://inkfactoryclothing.chipply.com/AppliedBolting/store.aspx?action=viewall) [DISTRIBUTOR LOGIN](https://appliedbolting.com/distributor-hub/) [FIND A DISTRIBUTOR](https://appliedbolting.com/distributor-locator/) [CONTACT US](https://appliedbolting.com/contact-us/) [PDH CERT](https://appliedbolting.com/request-a-certificate/) ![University of Houston Studies DuraSquirt® Single Pass Flange Tightening](https://blog.appliedbolting.com/hubfs/UofH.png) # University of Houston Studies DuraSquirt® Single Pass Flange Tightening - Home - [Applied Bolting Blog](https://blog.appliedbolting.com/applied-bolting-blog) - University of Houston Studies DuraSquirt® Single Pass Flange Tightening [Rob Westover](https://blog.appliedbolting.com/applied-bolting-blog/author/robw) 05/26/2021 [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) [0 Comments](https://blog.appliedbolting.com/applied-bolting-blog/2021/05/26/university-of-houston-studies-durasquirt-single-pass-flange-tightening#postComment) 1 Minutes In 2017, Applied Bolting partnered with Bechtel, Carber, and the University of Houston’s College of Technology, for an independent evaluation of  Applied Bolting’s DuraSquirt® Single Pass Flange System.  The project scope also included a comparison to legacy, multi-pass, star pattern, tightening methodology.  In 2018, The UH  team released a brief summary of the year long study.  A summary, of the study, can be downloaded below: The following conclusions can be drawn based on the computational and experimental results obtained: 1. ABT-DTI system is significantly faster than the ASME PCC-1 Legacy method by 60 to 70 percent. 2. ABT-DTI system reliably produces a leak free connection upon startup. 3. ABT-DTI system requires 75% fewer movements by the bolting operators. 4. ABT-DTI system does not require the use of precision torques as compared to ASME PCC-1 Legacy technique. 5. ABT-DTI system reliably yield these results with operators who have received minimal training and have limited experience with BFJA’s \[bolted flange joint assembly\]. [U of H Summary Letter](https://blog.appliedbolting.com/wp-content/uploads/2021/05/UH-Letter-2.pdf) [Download](https://blog.appliedbolting.com/wp-content/uploads/2021/05/UH-Letter-2.pdf) --- #### Tag: [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) #### Share: - [Follow us on Facebook](http://www.facebook.com/share.php?u=https://blog.appliedbolting.com/applied-bolting-blog/2021/05/26/university-of-houston-studies-durasquirt-single-pass-flange-tightening) - [Follow us on Twitter](https://twitter.com/intent/tweet?url=https://blog.appliedbolting.com/applied-bolting-blog/2021/05/26/university-of-houston-studies-durasquirt-single-pass-flange-tightening&text=University%20of%20Houston%20Studies%20DuraSquirt®%20Single%20Pass%20Flange%20Tightening) - [Follow us on Linkedin](http://www.linkedin.com/shareArticle?mini=true&url=https://blog.appliedbolting.com/applied-bolting-blog/2021/05/26/university-of-houston-studies-durasquirt-single-pass-flange-tightening) - [Follow us on Pinterest](http://pinterest.com/pin/create/button/?url=https://blog.appliedbolting.com/applied-bolting-blog/2021/05/26/university-of-houston-studies-durasquirt-single-pass-flange-tightening&text=University%20of%20Houston%20Studies%20DuraSquirt®%20Single%20Pass%20Flange%20Tighteningdescription=In%202017,%20Applied%20Bolting%20partnered%20with%20Bechtel,%20Carber,%20and%20the%20University%20of%20Houston’s%20College%20of%20Technology,%20for%20an%20independent%20evaluation%20of%20Applied[...]&media=https://8020600.fs1.hubspotusercontent-na1.net/hubfs/8020600/UofH.png) --- ###### [Single Pass Flange Bolting......How it works Previous Post](https://blog.appliedbolting.com/applied-bolting-blog/2021/05/14/single-pass-flange-bolting-how-it-works) ###### [Pre-Installation Verification, an easier way. Next Post](https://blog.appliedbolting.com/applied-bolting-blog/2021/07/13/pre-installation-verification-an-easier-way) This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. ### Category - [Squirter® DTIs (20)](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) - [Bolting (11)](https://blog.appliedbolting.com/applied-bolting-blog/tag/bolting) - [Tension (7)](https://blog.appliedbolting.com/applied-bolting-blog/tag/tension) - [Torque (5)](https://blog.appliedbolting.com/applied-bolting-blog/tag/torque) - [Case Study (4)](https://blog.appliedbolting.com/applied-bolting-blog/tag/case-study) ### Popular Posts [chris curven](https://blog.appliedbolting.com/applied-bolting-blog/author/chrisc) 03/17/2021 [Bolting](https://blog.appliedbolting.com/applied-bolting-blog/tag/bolting), [Torque](https://blog.appliedbolting.com/applied-bolting-blog/tag/torque), [Tension](https://blog.appliedbolting.com/applied-bolting-blog/tag/tension), [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis), [Structural Steel](https://blog.appliedbolting.com/applied-bolting-blog/tag/structural-steel), [Case Study](https://blog.appliedbolting.com/applied-bolting-blog/tag/case-study), [Safety](https://blog.appliedbolting.com/applied-bolting-blog/tag/safety) [Cold Weather: Our Squirter® DTIs With DuraSquirt® Formula Still Work!](https://blog.appliedbolting.com/applied-bolting-blog/2021/03/17/cold-weather-our-squirter-and-durasquirt-dtis-work) [Clara Moses](https://blog.appliedbolting.com/applied-bolting-blog/author/clara-moses) 09/30/2025 [Bolting](https://blog.appliedbolting.com/applied-bolting-blog/tag/bolting), [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) [Made in America: How Squirter® DTIs Deliver Quality and Reliability](https://blog.appliedbolting.com/applied-bolting-blog/made-in-america) [Rob Westover](https://blog.appliedbolting.com/applied-bolting-blog/author/robw) 08/17/2021 [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) [Hot Bolting - Single Stud Replacement](https://blog.appliedbolting.com/applied-bolting-blog/2021/08/17/hot-bolting-single-stud-replacement) [Clara Moses](https://blog.appliedbolting.com/applied-bolting-blog/author/clara-moses) 12/14/2025 [Bolting](https://blog.appliedbolting.com/applied-bolting-blog/tag/bolting), [Tension](https://blog.appliedbolting.com/applied-bolting-blog/tag/tension), [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) [The Science of Bolt Tension You Can See: How Squirter® DTIs Are Made](https://blog.appliedbolting.com/applied-bolting-blog/the-science-of-bolt-tension-you-can-see-how-squirter-dtis-are-made) --- ## Related Posts It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. [Bolting](https://blog.appliedbolting.com/applied-bolting-blog/tag/bolting), [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) [Clara Moses](https://blog.appliedbolting.com/applied-bolting-blog/author/clara-moses) 30 January, 2026 #### [Why You Can Trust Applied Bolting Technology® for Bolting Education](https://blog.appliedbolting.com/applied-bolting-blog/why-you-can-trust-applied-bolting-technology-for-bolting-education) Structural bolting failures rarely come from bad intent. More commonly, they occur due to unclear… [Read More](https://blog.appliedbolting.com/applied-bolting-blog/why-you-can-trust-applied-bolting-technology-for-bolting-education) [Bolting](https://blog.appliedbolting.com/applied-bolting-blog/tag/bolting), [Tension](https://blog.appliedbolting.com/applied-bolting-blog/tag/tension), [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) [Clara Moses](https://blog.appliedbolting.com/applied-bolting-blog/author/clara-moses) 14 December, 2025 #### [The Science of Bolt Tension You Can See: How Squirter® DTIs Are Made](https://blog.appliedbolting.com/applied-bolting-blog/the-science-of-bolt-tension-you-can-see-how-squirter-dtis-are-made) When it comes to structural bolting, reliability isn’t optional; it’s essential. Every Squirter®… [Read More](https://blog.appliedbolting.com/applied-bolting-blog/the-science-of-bolt-tension-you-can-see-how-squirter-dtis-are-made) [Bolting](https://blog.appliedbolting.com/applied-bolting-blog/tag/bolting), [Squirter® DTIs](https://blog.appliedbolting.com/applied-bolting-blog/tag/squirter-dtis) [Clara Moses](https://blog.appliedbolting.com/applied-bolting-blog/author/clara-moses) 30 September, 2025 #### [Made in America: How Squirter® DTIs Deliver Quality and Reliability](https://blog.appliedbolting.com/applied-bolting-blog/made-in-america) In the structural steel bolting industry, delays and quality issues can quickly derail a project.… [Read More](https://blog.appliedbolting.com/applied-bolting-blog/made-in-america) ### MADE IN AMERICA ![Made in America](https://blog.appliedbolting.com/hubfs/ascMadeInUSAv2-1.png) ### SPECIFY IT! Add the following statement to your structures bolting specification. All High Strength Structural Bolts shall include an F959(M) DuraSquirt® DTI, quenched and tempered in accordance with ASTM F959 section 4.3.2, manufactured by Applied Bolting Technology™, and installed and inspected, per their instructions. ![Applied Bolting](https://blog.appliedbolting.com/hubfs/abtLogoStacked.png) ![Portland Bolt](https://blog.appliedbolting.com/hubfs/portlandBoltLogo-1.png) Applied Bolting Technology™ is now a proud member of the Portland Bolt family of companies. **1413 Rockingham Road Bellows Falls, Vermont, USA 05101** US & Canada: **1.800.552.1999** | International: **1.802.460.3100** ©2026 Applied Bolting Technology™ | APPLIED BOLTING TECHNOLOGY™, the Bolt Icon®, the Color Orange™, DuraSquirt®, Squirter®, Squirt™, SEE THAT THE BOLTS ARE TIGHT™, THE BEST WAY TO BOLT™, and VISUAL VERIFICATION OF BOLT TENSION are Trademarks or Registered Trademarks of Applied Bolting Technology Products, LLC. ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Rob Westover", "url" : "https://blog.appliedbolting.com/applied-bolting-blog/author/robw" }, "dateModified" : "2025-12-05T16:07:42.404Z", "datePublished" : "2021-05-26T20:10:34.000Z", "headline" : "University of Houston Studies DuraSquirt® Single Pass Flange Tightening", "image" : [ "https://blog.appliedbolting.com/hubfs/UofH.png" ], "mainEntityOfPage" : { "@id" : "https://blog.appliedbolting.com/applied-bolting-blog/2021/05/26/university-of-houston-studies-durasquirt-single-pass-flange-tightening", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject" }, "name" : "Applied Bolting Technology" } } ```