tag:blogger.com,1999:blog-11805718803358661782024-02-19T01:00:27.807-06:00Glass, Glazing Systems and Blast Engineering CalculationsJEI Structural Engineering are specialists in design calculations for the glazing industry. Projects include blast, storefront, curtain wall, railing, glass entry,underwater viewing glass, value engineering, speaking and training.JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.comBlogger26125tag:blogger.com,1999:blog-1180571880335866178.post-40390998234698611412018-01-06T14:53:00.000-06:002018-01-06T14:55:53.619-06:00<div class="separator" style="clear: both; text-align: center;">
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<h2>
Delegated Design in Specs for Glazing Systems</h2>
We've been asked to review several engineering company’s calculation packages and found engineers<br />
stamping calculations that don’t meet specifications and code requirements. Please check your calculation packages to be sure.<br />
<br />
We found:<br />
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<br />
<ol>
<li>DL of the frame was not taken into consideration (flexure/axial load interaction) Typical C-Beam Calculations did not include axial load interaction with flexure required by the Aluminum Design Manual</li>
<li>Corner location analysis (75% WL acting simultaneously). Bite loss or movement into glazing pocket was not checked. Analysis of corners for 45 degree orthogonal loading was not considered as required by ASCE 7. Important for bite loss at the glazing pocket.</li>
<li>No Jam/perimeter mullion deflections to check caulking requirements. Deflections at Jamb perimeter joints were not checked for appropriate joint design. Important for preventing leaks at curtain wall interface to the structure.</li>
<li>LL movement was not taken into consideration at all. Building structural live load movement and system thermal expansion was not accounted for in joint design, splices and glazing pockets. This is required by contract specifications as part of the delegated design.</li>
<li>Analysis of local buckling modes and lateral torsional analysis was omitted but is required by the Aluminum Design Manual.</li>
</ol>
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<h3 style="text-align: center;">
<span style="color: red;">“</span>If undone, you are buying calculations half done and not according to code requirements.<span style="color: red;">”</span></h3>
It may be tempting to overlook it and we understand some contractors will simply say, "It's not worth the effort." Just keep in mind that these calculations are a part of the “delegated design” required by contract documents. If left undone, glazing contractors, general contractors, AEs and the building owners are buying a design half done and not according to code requirements.<br />
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<h3 style="text-align: center;">
<span style="color: red;">“</span>Half done calculations may result in glass breakage, joint leakage, system failure or other liability.<span style="color: red;">”</span></h3>
Half done calculations may result in damage such as glass breakage, joint leakage, system failure or other liability that quality service providers choose to steer clear of.<br />
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Let’s work together to design systems fast, affordable and correct. <br />
<br />
<div style="text-align: center;">
Info@ <a href="http://jeistructural.com/">JEIstructural.com</a> </div>
<div style="text-align: center;">
<b>816-505- 0987</b></div>
<br />
<div style="text-align: center;">
<span style="background-color: white;"><span style="color: #6aa84f;"><b>FAST | CLEAR | FRIENDLY | RIGHT</b></span></span></div>
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Info@ <a href="http://jeistructural.com/">JEIstructural.com</a> </div>
<div style="text-align: center;">
<b>816-505- 0987</b></div>
<span style="background-color: white;"><span style="color: #6aa84f;"><b><br /></b></span></span>JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com1tag:blogger.com,1999:blog-1180571880335866178.post-87826517424121242362017-10-09T06:01:00.001-05:002017-10-09T06:02:25.056-05:00Point Supported Glass Guardrail Engineering & Glass Rail Design<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/L_4BpWvOyUE" width="480"></iframe><br />
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<span style="background-color: white; font-family: helveticaneue; font-size: 12pt; font-weight: 700;">Glass Rail Design</span><br />
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<span style="font-family: "helveticaneue"; font-size: 12.000000pt;">glass balustrade design, glass rail detail, glass handrail engineering </span><br />
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<br />JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-12220852730453313622017-10-09T05:06:00.001-05:002017-10-09T05:26:49.703-05:00Cutting Holes In Glass Engineering Tips<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/OEDyOcpLABQ" width="480"></iframe><br />
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<span style="background-color: white; font-family: "helveticaneue"; font-size: 12pt; font-weight: 700;">Glass Rail Design</span><br />
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<span style="font-family: "helveticaneue"; font-size: 12.000000pt;">glass balustrade design, glass rail detail, glass handrail engineering </span></h3>
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<span style="font-family: "helveticaneue"; font-size: 12.000000pt;">JEI Structural Engineering</span></h4>
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-24741780165213028332017-10-09T05:00:00.001-05:002017-10-09T05:27:23.396-05:00Vitrum 2017 JEI Structural Engineering - Introduction<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/QErltwKry4M" width="480"></iframe><br />
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<span style="font-family: "helveticaneue"; font-size: 12.000000pt; font-weight: 700;">Cladding Design
</span></h2>
<h3>
<span style="font-family: "helveticaneue"; font-size: 12.000000pt;">Cladding design, cladding detail, cladding drawings and more. </span></h3>
We're cladding engineer & design, cladding engineering working on composite panel design, metal panel detail, and metal panel design.<br />
<br />
Universities do not teach aluminum panel design, aluminum
panel detail, composite panel detail, composite panel design, or metal panel design.<br />
<br />
Finding an experienced cladding engineer in aluminum consulting, or aluminum detail working as an aluminum engineer isn't easy. JEI Structural Engineering is to "go to" for glazing contractors, manufacturer and architects.<br />
<br />
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-84940360879937824142017-08-19T21:07:00.001-05:002017-10-09T05:27:44.280-05:00New Patent Curtain Wall Anchor - Test Project 1<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/AdaYr6CRcZM" width="480"></iframe><br />
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<span style="font-family: "helveticaneue"; font-size: 12pt; font-weight: 700;">Curtain Wall Engineer - New Patented Curtain Wall Anchor. </span><br />
<h3>
<span style="font-family: "helveticaneue"; font-size: 12pt;">Curtain wall design, curtain wall details, curtain wall detail, glass curtain wall details</span></h3>
<span style="font-family: "helveticaneue"; font-size: 12pt;">Having a curtain wall
plan and curtain wall detail are the first step to curtain wall engineering. Glazing contractors need curtain wall drawings or a curtain wall drawing. A curtain
wall engineer with curtain wall calculations can offer curtain wall consulting.</span><span style="font-family: "helveticaneue"; font-size: 12pt;"> </span><br />
<span style="font-family: "helveticaneue"; font-size: 12pt;"><br /></span>
<span style="font-family: "helveticaneue"; font-size: 12pt;">At JEI Structural Engineering, our team is innovative and solves problems. We've invented and patented a new curtain wall anchor system that is available for sell or license now.</span><br />
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<span style="font-family: "helveticaneue"; font-size: 12pt;">Glass Canopy Engineering</span></h2>
<span style="font-weight: normal;"><span style="font-family: "helveticaneue"; font-size: 12.000000pt;">Glass handrail engineering, glass wall
engineering, glass calculations, glazing design, glazier design, glazing calculations, structural glazing
design, and </span><span style="font-family: "helveticaneue"; font-size: 16px;">window blast engineering.</span></span><br />
<span style="font-weight: normal;"><span style="font-family: "helveticaneue"; font-size: 16px;"><br /></span></span>
<span style="font-weight: normal;"><span style="font-family: "helveticaneue"; font-size: 16px;">Contact JEI Structural Engineering at 816-505-0987.</span></span><br />
<span style="font-weight: normal;"><span style="font-family: "helveticaneue"; font-size: 16px;"><br /></span></span>
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-56353030546380027072017-08-19T19:54:00.001-05:002017-10-09T05:28:21.079-05:00Temporary Set Up To Hold Glass In Place<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/MYSNnQF_nBM" width="480"></iframe><br />
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<span style="font-family: "helveticaneue"; font-size: 12.000000pt; font-weight: 700;">Shop Drawings & Details
</span></h2>
<span style="font-family: "helveticaneue"; font-size: 12.000000pt;">We work on curtain wall details, curtain wall detail, facade detail, glass wall detail, and structural glazing details. Facade detail, glass balustrade detail, glass wall detail, glass detail, glass floor detail. Cladding detail,
structural glazing detail, glass canopy detail.</span><br />
<span style="font-family: "helveticaneue"; font-size: 12.000000pt;"><br /></span>
<span style="font-family: "helveticaneue"; font-size: 12.000000pt;">Glazing detail, glass plan, glass wall plan, window wall
detail. JEI Structural Engineering offers storefront detail, curtain wall drawings. Facade drawings, metal panel detail, glass rail detail,
glass stair detail, glass staircase detail. Skylight drawing, storefront drawings, aluminum detail, and aluminum panel detail. Our team are experts in cladding drawings, compost panel detail, glass floor drawing, glass wall
drawing, glazing drawings, glazing plan, skylight drawings, glass curtain wall detail, glass curtain
wall details, window mullion details and more.</span><br />
<span style="font-family: "helveticaneue"; font-size: 12.000000pt;"><br /></span>
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-21154919256125037842017-08-10T07:14:00.001-05:002017-10-09T05:29:15.425-05:00Curtain Wall - Structurally Sealed Vertical Example<h2>
Curtain Wall - Structurally Sealed Vertical Example</h2>
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<span style="background-color: white; color: #1d2129;"><span style="font-family: "arial" , "helvetica" , sans-serif;">JEI Structural Engineers show an example of structural sealant use in curtain wall design. Our goal is to help educate those new to our industry on common terms and examples from live projects so jobs run smoothly.</span></span><br />
<span style="background-color: white; color: #1d2129; font-family: "helvetica neue" , "helvetica" , "arial" , sans-serif; font-size: 14px;"><br /></span></div>
<iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/GCAmKfPsC6w" width="560"></iframe><br />
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<span style="font-family: "arial" , "helvetica" , sans-serif;">Glass and Glazing Sealants are prevalent.<style>
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<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: small;">Structural glazing systems, in their simplest form, are types of
curtain wall systems consisting of glass that is bonded or anchored back to a
structure without the use of continuously gasketed aluminum pressure plates or
caps.<o:p></o:p></span></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: small;">Structurally glazed systems create a greater transparency than
traditional captured systems. There are less visual interruptions due to the
lack of metal on the, creating a seamless, continuous glass look. <span style="color: #4e4e4e;"><o:p></o:p></span></span></div>
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<span style="color: #4e4e4e;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: small;">The main types are:</span></span></div>
<h3 style="background: white;">
<div style="text-align: center;">
<span style="font-family: "arial" , sans-serif;">Stick-built structural glazing system </span></div>
<span style="font-family: "arial" , sans-serif;"><div style="text-align: center;">
Unitized structural glazing system </div>
</span><span style="font-family: "arial" , sans-serif;"><div style="text-align: center;">
Point supported glass systems </div>
<div style="text-align: center;">
<br /></div>
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<div style="text-align: center;">
<a href="http://www.jeistructural.com/">www.JEIstructural.com</a></div>
</span></h3>
<!--EndFragment-->JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-21206890256172757982017-07-16T05:34:00.001-05:002017-10-09T05:30:25.896-05:00Glass Storefront Engineering & Glazing Challenges<div style="text-align: center;">
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<h2 style="text-align: center;">
<b style="mso-bidi-font-weight: normal;"><span style="color: black; mso-themecolor: text1;">Glass Storefront Install
& Engineering Challenges</span></b></h2>
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<span style="color: black; mso-themecolor: text1;">New Project
Specs Require “Sealed Calculations” for storefronts.<span style="mso-spacerun: yes;"> </span>(That’s engineering!) <o:p></o:p></span></div>
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<br /></div>
<div class="MsoNormal">
<span style="color: black; mso-themecolor: text1;">Most
manufacture Wind load charts DO NOT fully account for updated code
requirements.<o:p></o:p></span></div>
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<br /></div>
<div class="MsoNormal">
<span style="color: black; mso-themecolor: text1;">In the past,
there were loopholes that allowed engineers more flexibility than the current ADM
2015 requirements on open shapes.<span style="mso-spacerun: yes;"> </span>This can
mislead glazing project managers costing more steel, higher engineering &
lost time.<o:p></o:p></span></div>
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<br /></div>
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<span style="color: black; mso-themecolor: text1;">Add to that,
the issue of Building Movement, which is required by delegated design to
consider.<span style="mso-spacerun: yes;"> </span><o:p></o:p></span></div>
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<br /></div>
<div class="MsoNormal">
<span style="color: black; mso-themecolor: text1;">As you know,
the impact of designing and installing a storefront wrong isn’t life
threatening, so a few people overlook the issues entirely.<span style="mso-spacerun: yes;"> </span>Preferring to bury their head in the sand.<span style="mso-spacerun: yes;"> </span>The result is minor system failures that may
cause water leaks or damage and sometimes require system replacement.<span style="mso-spacerun: yes;"> </span><span style="mso-spacerun: yes;"> </span>At
worst, it’s a lawsuit.<o:p></o:p></span></div>
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<br /></div>
<div class="MsoNormal">
<span style="color: black; mso-themecolor: text1;">At some
point, all the codes will catch up to the new standards.<span style="mso-spacerun: yes;"> </span>JEI Structural Engineering is ahead of the
learning curve, developing:<o:p></o:p></span></div>
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<br /></div>
<div class="MsoListParagraphCxSpFirst" style="mso-list: l0 level1 lfo1; text-indent: -.25in;">
<!--[if !supportLists]--><span style="color: black; font-family: "symbol"; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol; mso-themecolor: text1;"><span style="mso-list: Ignore;">·<span style="font: 7.0pt "Times New Roman";"> </span></span></span><!--[endif]--><span style="color: black; mso-themecolor: text1;">Custom Wind Load Charts with lateral
buckling checks, according to code.<o:p></o:p></span></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l0 level1 lfo1; text-indent: -.25in;">
<!--[if !supportLists]--><span style="color: black; font-family: "symbol"; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol; mso-themecolor: text1;"><span style="mso-list: Ignore;">·<span style="font: 7.0pt "Times New Roman";"> </span></span></span><!--[endif]--><span style="color: black; mso-themecolor: text1;">Calculation and design methods that
reduce steel.<span style="mso-spacerun: yes;"> </span><span style="mso-spacerun: yes;"> </span><o:p></o:p></span></div>
<div class="MsoListParagraphCxSpLast" style="mso-list: l0 level1 lfo1; text-indent: -.25in;">
<!--[if !supportLists]--><span style="color: black; font-family: "symbol"; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol; mso-themecolor: text1;"><span style="mso-list: Ignore;">·<span style="font: 7.0pt "Times New Roman";"> </span></span></span><!--[endif]--><span style="color: black; mso-themecolor: text1;">Pre-Design assist that Anticipates
Building Movement at the storefront head.<o:p></o:p></span></div>
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<br /></div>
<div class="MsoNormal">
<span style="color: black; mso-themecolor: text1;">At JEI, we
realize glazing contractors want: speed of service, high quality communication
and fair prices.<span style="mso-spacerun: yes;"> </span><o:p></o:p></span></div>
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<br /></div>
<div class="MsoNormal">
<span style="color: black; mso-themecolor: text1;">Get us in the
loop early and we’ll help spot potential obstacles and road blocks, freeing you
to deliver the caliber of services a tradesman can be proud of. <o:p></o:p></span></div>
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<span style="font-family: 'HelveticaNeue'; font-size: 12.000000pt;">Storefront design, storefront detail, storefront consulting, storefront drawing, and storefront drawings. </span><br />
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-31706085938258261472013-11-19T14:59:00.004-06:002013-11-19T15:01:49.987-06:00Codes Changes Creating a Cladding Mess<br />
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<span style="font-family: Calibri;">If you’re a glazing contractor or a building envelop
contractor; an estimator or project manager, you’ve probably tried to size your
storefront and curtain wall members off of a wind design pressure.<span style="mso-spacerun: yes;"> </span><o:p></o:p></span></div>
<br />
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<span style="font-family: Calibri;">The wind design criteria are usually given on the contract
structural drawings.<span style="mso-spacerun: yes;"> </span>Sometimes design
wind pressures for components and cladding are given as well.<span style="mso-spacerun: yes;"> </span>However, the changes with the 2012 IBC have
created much confusion regarding the actual design pressures to be used.<o:p></o:p></span></div>
<br />
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<span style="font-family: Calibri;">Many times the components and cladding pressures listed on
the structural drawings are given in terms of “Ultimate strength design”, which
is not used in any of the wind load charts given by manufactures.<span style="mso-spacerun: yes;"> </span>Using these pressures will ultimately lead
to overly conservative design.<o:p></o:p></span></div>
<br />
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<span style="font-family: Calibri;">Designers need to be able to calculate the allowable strength
design loads from the information given off of the structural drawings.<o:p></o:p></span></div>
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<span style="font-family: Calibri;">If you have a question about what is on a structural
drawing, give us a call.<span style="mso-spacerun: yes;"> </span><o:p></o:p></span></div>
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<span style="font-family: Calibri;">Stewart Jeske</span></div>
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<span style="font-family: Calibri;">816-734-8345</span></div>
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<br />JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-86894333512572742302012-08-24T16:56:00.004-05:002017-10-09T05:54:05.507-05:00Can you break me down the difference in Explosive Weight I and Explosive Weight II?<br />
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<span style="font-family: "calibri";"><b style="mso-bidi-font-weight: normal;"><span style="color: #1f497d; font-size: 16pt;">Explosive Weight I and Explosive Weight
II?</span></b><b style="mso-bidi-font-weight: normal;"><span style="color: navy; font-family: "times new roman" , "serif"; font-size: 16pt;"><o:p></o:p></span></b></span></div>
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<b style="mso-bidi-font-weight: normal;"><u><span style="font-size: 14pt;"><span style="font-family: "calibri";">Question<o:p></o:p></span></span></u></b></div>
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<span style="font-family: "calibri";">Can you break me down the difference in <span style="color: #1f497d;">Explosive Weight I and Explosive Weight II</span>?</span></div>
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<b style="mso-bidi-font-weight: normal;"><u><span style="font-size: 14pt;"><span style="font-family: "calibri";"><span style="mso-spacerun: yes;"> </span>Answer<o:p></o:p></span></span></u></b></div>
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<span style="color: #1f497d;"><span style="font-family: "calibri";">This is the criteria from the
2012 UFC:<o:p></o:p></span></span></div>
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<span style="color: #1f497d;"><span style="font-family: "calibri";">Explosive weight I is associated
with a larger weight of TNT for a van or truck bomb outside of the base
perimeter. Its based on the assumption that a vehicle bomb will not
be able to penetrate the base perimeter and/or will be detected at the
gate. If we have a facility that is less than 200 feet from the base
perimeter/fence, then we must consider explosive weight I in addition to
explosive weight II and its pressure/impulse may govern over the explosive
weight II.<o:p></o:p></span></span></div>
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<span style="color: #1f497d;"><span style="font-family: "calibri";">Explosive weight II is
associated with a smaller weight of TNT simulating a back-pack or smaller bomb
that gets past the base gate. The standoff for this explosive weight is
no longer the 82 feet typical of the 2007 criteria. Now it is based on
the new conventional stand-offs that are listed in the tables based on
construction type and load bearing/non-load bearing walls. The actual
stand-off must be used which is from the parking lot to the window/wall in question.<o:p></o:p></span></span></div>
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<span style="color: #1f497d;"><span style="font-family: "calibri";">Hope this helps. Please
call if you have any questions.<o:p></o:p></span></span></div>
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<br />
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<span style="color: #1f497d;"><span style="font-family: "calibri";">Stewart P. Jeske, P.E.<o:p></o:p></span></span></div>
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<span style="color: #1f497d;"><span style="font-family: "calibri";">JEI Structural - Glazing Systems
Engineering<o:p></o:p></span></span></div>
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com2tag:blogger.com,1999:blog-1180571880335866178.post-6158767866060171832012-03-21T11:23:00.002-05:002017-10-09T05:55:01.815-05:00Updated UFC 4-010-01 (2012) - Impact to Glazing ContractorsBased on a quick review, here are the major changes/impact that I see: <br />
<br />
<strong>1) The biggest change</strong> – Conventional Construction Stand-Off Distances. This is a huge change! <br />
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They have re-identified the conventional construction stand-off distances in Table B-2 based on the wall type construction. I anticipate the net effect will be a moving to wall construction which minimizes the construction stand-off due to spacial constraints associated with military bases. So for reinforce masonry and concrete and wood studs w/brick that means about 30 feet and 16 feet and 36 ft respectively! Glazing systems with these requirements will not likely be able to have static equivalent calculations performed – They will be forced to dynamic analysis. I anticipate that these types of installations will start showing up late summer to fall of this year.<br />
<br />
<strong>2) Another major impact</strong> – Testing Requirements. This is also huge! The requirements state that the testing must meet the appropriate pressure and impulse from the applicable standoff and explosive weight. So, given the changes with the Conventional Construction Stand-Off Distances most all of the manufacture’s blast testing (at 82′ Ex weight II and 144′ Ex weight I) will be obsolete! I feel badly for all of the manufacture’s who have invested a great deal of effort and resource to testing in the past 5 years.<br />
<br />
<strong>3) Dynamic analysis is pushed.</strong> Under paragraph B-3.1.3 ASTM F 2248 Design Approach (This is the 3-second static equivalent method) they state, “In order to reduce the conservatism associated with using the ASTM methodology, the window systems may be designed using dynamic analysis or tested …”<br />
<br />
<strong>4) Framing calculations</strong> under the static equivalent method is changed. Framing must now be shown adequate with a design load of 2x the glazing resistance instead of the 3-second equivalent blast load. In some cases (with small glass lites governing – Its usually the case that the Architect is unaware) this will be the difference between 50psf (typical 3-sec load) and 400 – 1200 psf! L/60 is used as a deflection limit now instead of L/160, but I don’t think that will help much – sections will need to be much stronger using this method.<br />
<br />
<strong>5) Connections and anchors</strong> under static equivalent method is changed. The connections and anchors must be designed for either 1x or 2x the glazing resistance instead of the typical loop holes that we have seen 2x the 3-second load (usually 100psf). Anchors and connections at these loads will be difficult if the controlling glazing lite in an elevation is small. I think anchors into masonry and wood and light-gage steel will not be workable with this method.<br />
<br />
<strong>6) We are now able to Use ultimate strength design</strong> instead of allowable stress, but again this helps little in light of the major changes above.<br />
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<ul>
<li>Explosive Weight - (Typically for most projects explosive weight II)</li>
<li>Standoff Distance - (For most projects it is the Conventional Construction Stand Off = 82 ft) </li>
<li>Level of Protection - (Typically Low Level of Protection)</li>
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This criteria is usually determined during the design phase of a project by the using agency or the design team.</div>
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For more helpful information on blast projects see JEI Structural Engineering <a href="http://www.jeistructural.com/window-blast-engineering" target="_blank">WINGARD, Windas, Window Blast, Blast Mitigation Design</a><br />
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-81146161787352235192012-01-26T20:15:00.002-06:002017-10-09T05:55:58.339-05:00lateral-torsional buckling on storefrontsRegulations have changed so there is a need to design for the lateral-torsional buckling on storefronts now. <br />
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<span style="font-family: "calibri";">Section 8.4.B.3.a of the ‘Aluminum Windos and Doors, and Glazing’ specifications states the following:</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4YbCTvNtpGhsWmWF1u5BMFlY-fv1vKIIjtoSacIXWZLlUadKAVyATcUzA85V2TXd87MBvpA2C0J1DdNxYFC17nAgrAqvej0JUteG0cQld9iLNLJAzbHfC74qwDd7ht16UCYzpcH24FsM/s1600/Design+and+Performace+-+AAMA.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="100" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4YbCTvNtpGhsWmWF1u5BMFlY-fv1vKIIjtoSacIXWZLlUadKAVyATcUzA85V2TXd87MBvpA2C0J1DdNxYFC17nAgrAqvej0JUteG0cQld9iLNLJAzbHfC74qwDd7ht16UCYzpcH24FsM/s400/Design+and+Performace+-+AAMA.png" width="400" /></a></div>
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<span style="font-family: "calibri";">The AAMA standard dealing with storefront design is ‘AAMA SFM-1-87: Aluminum Storefront and Entrance Manual’.</span><br />
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<span style="font-family: "calibri";">Engineering Section 6.0 (shown below) directs us to the current Aluminum Association’s Aluminum Design Manual (2010):</span><br />
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<span style="font-family: "calibri";">The Aluminum Design Manual, section F.2 (shown below), indicates that when framing members are subject to lateral buckling, </span><span style="font-family: "calibri";">the nominal flexural strength must consider the un-braced length of the framing in question:</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhRcPLLxHEg_bgILpVaYGcmU6LK5hmNEDykoBBSPGgZFa1ccdAuHp_TCDN_jSFgbRAXHdQuAs52kbCqC9x_1SPcZDkOKdJMMa26PNA1ZX3Ti-iPiwuYNZyoeylU5r0cQph6d-G0XeXCRh4/s1600/F.2+Open+Shapes+=+AAMA.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="148" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhRcPLLxHEg_bgILpVaYGcmU6LK5hmNEDykoBBSPGgZFa1ccdAuHp_TCDN_jSFgbRAXHdQuAs52kbCqC9x_1SPcZDkOKdJMMa26PNA1ZX3Ti-iPiwuYNZyoeylU5r0cQph6d-G0XeXCRh4/s320/F.2+Open+Shapes+=+AAMA.png" width="320" /></a></div>
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<span style="font-family: "calibri";">We want you to have this information to give you a better understanding of why we are designing open shaped verticals mullions to prevent </span><span style="font-family: "times new roman";">lateral-torsional buckling. This increases the stability and life of the storefront wall installation providing a higher level of client satisfaction to the end user.</span></div>
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com2tag:blogger.com,1999:blog-1180571880335866178.post-51563353885444102472012-01-03T19:59:00.002-06:002017-10-09T05:40:46.064-05:00Glass Roads - the prototypeSolar powered glass highways on zooming toward you. How will it impact the glazing industry?<br />
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<iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/qlTA3rnpgzU" width="560"></iframe><br />
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Driving on Glass? Inventor Hopes to Lay Down Solar Roads</h1>
Read more: <a href="https://www.scientificamerican.com/article/driving-on-glass-solar-roads/">https://www.scientificamerican.com/article/driving-on-glass-solar-roads/</a><br />
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<span style="font-family: "helveticaneue"; font-size: 12.000000pt;">Engineer, structural engineer, structural engineering, engineering, glass, glazing, curtain wall,
storefront, window wall, metal panel, skylight, window, sunshade, glazier, glass balustrade, glass
wall, glass railing, glass staircase, glass floor, structural glazing, glass canopy, glass magazine,
window wall, animal habitat, architectural glass, composite panel, curtainwall.</span><br />
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-44794516442965796482011-08-12T16:01:00.002-05:002011-08-16T09:04:52.488-05:00FUTURE CHANGES TO UFC CODE / ASTM F2248 STANDARD<span style="font-family: Calibri;">For the past several years, the Unifed Facilities Criteria (UFC 4-010-01) has been the governing code for all U.S. Department of Defense (DoD) blast mitigation projects.<span style="mso-spacerun: yes;"> </span>Referencing the current ASTM F2248-03 standard, the UFC provides a guideline for determining an appropriate static design blast pressure for both framing and connections of blast resistant glazing systems.</span> <br />
<span style="font-family: Calibri;">Surprisingly, many engineers and glazing contractors are unaware of the requirements set forth by ASTM F2248-03 for the design of framing connections for blast resistant glazing systems.<span style="mso-spacerun: yes;"> </span>ASTM F2248-03 specifies connection design loads of at least 2.0 times the magnitude of the 3-second equivalent design load or the glazing resistance as determined from ASTM E1300, whichever is greater.<span style="mso-spacerun: yes;"> </span>Often the glazing system connections to the main structure are only designed to resist 2.0 times the 3-second equivalent design load, despite the glazing resistance of the system.<o:p></o:p></span><br />
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<span style="font-family: Calibri;">The UFC 4-010-01 is currently undergoing revisions that should clairify blast design loads and reference a more stringent version of the ASTM F2248 standard (ASTM F2248-09). The revised ASTM F2248-09 sets forth the following criteria for the design of blast resistant framing connections to the main structure:</span><br />
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<div class="MsoListParagraphCxSpFirst" style="margin: 0in 0in 0pt 0.5in; mso-list: l0 level1 lfo1; text-indent: -0.25in;"><span style="mso-bidi-font-family: Calibri;"><span style="mso-list: Ignore;"><span style="font-family: Calibri;">a.</span><span style="font-size-adjust: none; font-stretch: normal; font: 7pt/normal "Times New Roman";"> </span></span></span><span style="font-family: Calibri;">2.0 times the magnitude of the load resistance of the blast resistant glazing if the maximum air blast pressure is greater than one half the magnitude of the load resistance of the blast resistant glazing.</span></div><br />
<div class="MsoListParagraphCxSpMiddle" style="margin: 0in 0in 0pt 0.5in; mso-list: l0 level1 lfo1; text-indent: -0.25in;"><span style="mso-bidi-font-family: Calibri;"><span style="mso-list: Ignore;"><span style="font-family: Calibri;">b.</span><span style="font-size-adjust: none; font-stretch: normal; font: 7pt/normal "Times New Roman";"> </span></span></span><span style="font-family: Calibri;">1.0 times the magnitude of the load resistance of the blast resistant glazing if the maximum air blast pressure is less than one half the magnitude of the load resistance of the blast resistant glazing.</span></div><br />
<div class="MsoListParagraphCxSpMiddle" style="margin: 0in 0in 0pt; mso-add-space: auto;"><o:p><span style="font-family: Calibri;"> </span></o:p><span style="font-family: Calibri;">Currently, UFC 4-010-01 (2007 revision) references ASTM F2248-03 and not the more up-to-date F2248-09 edition.<span style="mso-spacerun: yes;"> </span>It is our understanding that ASTM F2248-09 is not required in the design of blast resistant systems until referenced in the most current version of the UFC which is anticipated this year or early next year.</span></div><br />
<span style="font-family: Calibri;">The changes may be difficult to accommodate with static equivalent analysis and may require a larger push for dynamic blast analysis to maintain reasonable connections. </span><br />
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<span style="font-family: Calibri;">Written by Matt Quinlivan, E.I.T.</span><br />
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com1tag:blogger.com,1999:blog-1180571880335866178.post-62084172374273647402011-07-16T12:08:00.000-05:002017-10-09T05:55:45.922-05:00Be Careful With Manufacture Storefront Design Charts<span style="font-family: "times new roman" , "serif"; font-size: 12pt;">Design wind load charts put out by manufactures are usually only good for estimating overall span deflection of a mullion, and do not typically consider proper methods for stress design.<o:p></o:p></span><br />
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<span style="font-family: "times new roman" , "serif"; font-size: 12pt;">The 2010 Aluminum Code has new criteria for considering the unbraced length of open sections. The unbraced length for a vertical mullion is usually considered to be the distance between horizontal mullions. However, design wind load charts put out by many manufactures of storefront systems are often based on the assumption that the mullion has full lateral buckling support and an unbraced length of zero. How can this be?<o:p></o:p></span></div>
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<span style="font-family: "times new roman" , "serif"; font-size: 12pt;">I believe that the manufacturers are considering lateral bracing from the glass and the mechanical gaskets. However, after review of many industry specs it is clear that mechanical gaskets should not be considered as a means of lateral bracing for open shaped storefront mullions. Therefore, the charts error on the side of being too liberal. When it comes to the calculations, they can’t match up and the mullions usually don’t perform as well as the charts indicate.<o:p></o:p></span></div>
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<span style="font-family: "times new roman" , "serif"; font-size: 12pt;">Unfortunately, it’s in the interest of the manufactures to keep the charts the same because they are competing against one another for framing systems with the highest performance standards.<o:p></o:p></span></div>
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<span style="font-family: "times new roman" , "serif"; font-size: 12pt;">Glaziers should keep this in mind when selecting open shaped vertical mullions and stay well under the curve projections that are indicated. If glaziers use the charts, as is, reinforcing structural glazing or heavier mullions will likely be needed.</span></div>
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com5tag:blogger.com,1999:blog-1180571880335866178.post-20723995659830321112011-07-16T07:25:00.000-05:002011-07-16T07:25:49.966-05:00Automatic Sliding Doors Have Operational Limitations<div class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-family: Calibri;"><span style="color: black; mso-themecolor: text1;">It’s important for glazing contractors to get information from the automatic sliding door manufacturers, in advance, on operational limitations for their systems. </span></span></div><div class="MsoNormal" style="margin: 0in 0in 0pt;"><br />
</div><div class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-family: Calibri;"><span style="color: black; mso-themecolor: text1;">Some automatic door manufacturers have stringent criteria on how much the supporting header and jambs can deflect from wind load and how much can be supported vertically on top of the header.</span></span></div><div class="MsoNormal" style="margin: 0in 0in 0pt;"><br />
</div><div class="MsoNormal" style="margin: 0in 0in 0pt;"></div>JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com2tag:blogger.com,1999:blog-1180571880335866178.post-15346119282809978612011-07-16T07:10:00.002-05:002017-10-09T05:56:22.190-05:00Floor Movement & Glass RailingFor interior glass railing one of the things you need to watch out for is glass railing on stairs that traverse floor levels. If the floors are designed to deflect with live load, care is needed to make sure load doesn’t transfer to the glass railing system.<br />
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We saw a project with glass railing that goes between floors and the top portion of the metal handrail continued to the second floor wall framing. There is the possibility that the second floor framing can deflect and if you have a continuous rail that goes between the second floor wall and is attached to the stair, load can be transferred into the glass causing breakage.<br />
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It’s more appropriate to break the railing at the floor transition or provide a joint that slides. <br />
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Title: Staircase Glass Railing Designs, Glass Railing, Glass Balustrade </div>
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Description: JEI offers staircase glass railing designs, glass railing, glass balustrade and glass railing calculations for glazing contractors.<br />
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JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com3tag:blogger.com,1999:blog-1180571880335866178.post-54563203728510034442011-01-22T19:25:00.000-06:002011-01-22T19:25:42.681-06:00Kauffman Performing Arts Center - Built for snowJEI Structural was honored to do a small part of the glazing calculations on the lower portion of this structure. We didn't work on the roof, but we're happy to see that the Kauffman Performing Arts Center performs well with snow loads.<br />
<a href="http://www.kmbc.com/news/26577116/detail.html">http://www.kmbc.com/news/26577116/detail.html</a>JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-30178158111939519652010-12-03T08:51:00.000-06:002010-12-03T08:51:01.590-06:00Recent Developments in Small Business Government ContractingRecent Developments in Small Business Government Contracting<br />
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The past few months have seen a flurry of federal activity with regard to small business government<br />
contracting – from Congress, SBA and other federal agencies, and even a special Presidential Task Force.<br />
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Following is a brief recap of some of these measures:<br />
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SBA Finalizes New Size Standards<br />
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On October 6, 2010, the U.S. Small Business Administration published revised size definitions for three<br />
broad commercial sectors affecting businesses in retail trades, accommodations and food services, and other services.<br />
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Originally proposed in October 2009, the changes will broaden small business eligibility and help an estimated 17,000 additional firms gain access to SBA’s financial assistance, contracting and other programs. Before this comprehensive review, the last overall review of size standards occurred more than 25 years ago.<br />
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The three final rules will affect the following industries:<br />
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Sector 44-45 - Retail Trade: A change in the new car dealer industry plus increased size standards in 48 other retail trade industries are estimated to result in 14,400 additional retail firms being classified as small businesses.<br />
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Sector 72 – Accommodation and Food Services: Size standards were increased for five industries with an estimated 2,050 additional firms becoming eligible for small business programs.<br />
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Sector 81 – Other Services: Size standards were increased for 18 industries, resulting in an estimated 1,400 additional firms falling under the small business classification.<br />
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Increase in Small Business Set-Aside Thresholds<br />
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On October 1, 2010, Small Business set aside thresholds changed from $100K to $150K and from $250K to $300K for operations defined in FAR 2.101 under Simplified Acquisition Threshold.<br />
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The new inflationary thresholds became effective 1 October 2010. Specifically FAR Part 19 changed as follows:<br />
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- Subcontracting dollar amounts changed from “550,000” to $650,000” (“$1 million” to “$1.5 million” for construction).<br />
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- The total value of contracts for 8(a) and HUBZone sole source awards changed from "$5.5million" to "$6.5 million" for manufacturing and "$3.5 million" to "$4 million" for all other acquisitions.<br />
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- The total value of contracts for SDVOSB changed from “$5.5 million” to $6 million” for manufacturing and “$3 million” to “$3.5 million” for all other NAICS.<br />
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- The requirement to evaluate SDB performance for negotiated acquisitions changed from greater than "$550,000" to "$650,000" and from "$1 million" to "$1.5 million" for construction.<br />
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A Final Rule for SBA’s Women-Owned Small Business Program<br />
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The U.S. Small Business Administration (SBA) expects to have a federal contracting women-owned small<br />
business (WOSB) program up and running February 4, 2011, per publication of its final rule on October 7, 2010.<br />
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The new rule identifies 83 industries in which WOSBs are under-represented or substantially underrepresented in the federal contract marketplace, a major increase from the 4 industries identified in an<br />
earlier rule. These industries were identified based upon the combination of both a “share of contracting dollars” analysis, as well as a “share of number of contracts awarded” analysis. (The earlier rule was based solely on a “share of contracting dollars” analysis). In addition to opening up more opportunities for WOSBs, the rule is another tool to help achieve the statutory goal that 5 percent of federal contracting dollars go to women-owned small businesses.<br />
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The SBA, in conjunction with the Federal Acquisition Regulatory Council, has now begun a 120-day implementation period, including building the technology and program infrastructure to support the certification process and ongoing oversight. With implementation expected to take several months, the SBA expects agencies to start making contracts available to WOSBs under the program in early 2011.<br />
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Components of the Women-Owned Small Business rule include:<br />
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Firms must be 51 percent owned and controlled by one or more women, and primarily managed by one<br />
or more women. The women must be U.S. citizens. The firm must be “small” in its primary industry in accordance with SBA’s size standards for that industry. In order for a WOSB to be deemed“economically disadvantaged,” its owners must demonstrate economic disadvantage in accordance with the requirements set forth in the final rule.<br />
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The final rule authorizes a set-aside of federal contracts for WOSBs where the anticipated contract price does not exceed $3 million - or $5 million in the case of manufacturing contracts. Contracts with values in excess of these limits are not subject to set-aside under this program. The final rule removes the requirement, set forth in a prior proposed version, that each federal agency certify that it had engaged in discrimination against women-owned small businesses in order for the program to apply to contracting by that agency.<br />
• The proposed rule allows women-owned small businesses to self-certify as “WOSBs” or to be certified by third-party certifiers (such as the National Women Business Owners Con?? http://www.nwboc.org ), including government entities and private certification groups. <br />
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o The final rule requires WOSBs which self-certify to submit a robust certification verification, to complete the certifications at the federal Online Representation and Certification Application (“ORCA”) Web site, and also to submit a core set of eligibility-related documents to an online “document repository” to be maintained by the SBA. Each agency’s contracting officers will have full access to this repository. <br />
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o The SBA intends to engage in a significant number of program examinations to confirm eligibility of individual WOSBs.<br />
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o In the event of a contract protest or program review, the SBA has the authority to request substantial additional documentation from the WOSB to establish eligibility. <br />
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o SBA intends to pursue vigorously punitive action against ineligible firms which seek to take advantage of this program and in so doing to deny its benefits to the intended legitimate WOSBs. <br />
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A Compliance Guide for the Women Owned Small Business Program was published in the Federal Register on October 27, 2010. JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-6919333526889285722010-11-21T19:48:00.003-06:002010-11-21T20:09:38.609-06:00How experience for design calculations saves time and moneySome glazing contractors don’t budget enough for appropriate engineering calculations (structural calcs) on projects. Those who do, understand the value of industry expertise. Some glaziers brag, “I’ve got a guy that does it on the side.” The truth is, a structural engineer with industry experience will save you time and money. <br />
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Structural engineers with glazing system experience are familiar with industry manufactures and have worked with their components and framing, so you’ll end up with system components and anchors that will work. An experienced engineer will always look at the boundary joints to make sure that excessive movement will not compromise the joint water barrier. In addition, years of experience usually results in a quick turn around using better software, specifically for aluminum curtain wall and storefront design. <br />
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Experts in aluminum code won’t over design your project. Aluminum design is specialized and requires adherence to the complex 2010 Aluminum Design Manual. This 469 page book larger is larger than the steel code! Few engineers ever pick up aluminum design, due to it’s specialization. University curriculums for structural engineers focus on steel, concrete and CMU. Aluminum is never used in the design of building or bridge structures so most structural engineers just don’t come across it in their everyday work. This type of experience is essential if you want your glazed system to work without problems for years to come. <br />
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So next time you need design calculations, hire experience. You’ll save money in the end.JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-82845483258708222652010-06-05T15:25:00.000-05:002010-06-05T15:25:52.162-05:00Requirements for Blast Resistant Glazing Projects<span style="background-color: white; color: #444444;">Are you </span><span style="background-color: white; color: #444444;">considering jumping into the fray to receive some of the trickle down recovery money? Perhaps you’re considering a project that requires blast resistant glazing, but you are not sure what to expect. Many of the architect design teams have hired blast consultants to review submittals in detail. I’m not trying to scare you away, but I do think that its important to know what to expect. The “stickiness” of the submittal process really depends on who’s looking at the submittals and who is preparing the submittals. I’ve listed some typical submittal requirements that are usually needed for a blast resistant project:</span><br />
<span style="background-color: white; color: #444444;">• <strong>Cover-all Performance</strong> - Usually the specs will have a cover-all performance statement like, “Provide design of glazing system to meet the minimum blast requirements of UFC 4-010-01.” But what’s usually missing are the specific performance design requirements - level of protect, explosive weight category and stand-off distance. Getting these items identified at the beginning of a project is essential for a project to flow smoothly.</span><br />
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<span style="background-color: white; color: #444444;"></span><br />
<span style="background-color: white; color: #444444;">• <strong>Glass Thickness Design</strong> – UFC 4-010-01 Tables B-2 and B-3 have minimum thickness listed for single pane and insulated glass. Usually the minimums work in every case, but it must be shown by calculations according to ASTM E1300.</span><br />
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<span style="background-color: white; color: #444444;"></span><br />
<span style="background-color: white; color: #444444;">•<strong> Framing Components Design</strong> - Calculations are typically required showing that mullions deflections and stress do not exceed allowed limits. The limit for deflection is typically L/160 for static blast loads determined from the UFC criteria.</span><br />
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<span style="background-color: white; color: #444444;"></span><br />
<span style="background-color: white; color: #444444;">• <strong>Connections/Joinery Design</strong> – Calculations are required to demonstrate that all of the internal joinery including glazing stops and the anchors to the structure are able to resist the minimum of 2 times the static blast load from UFC criteria or the glazing resistance determined from ASTM E1300.</span><br />
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<span style="background-color: white; color: #444444;"></span><br />
<span style="background-color: white; color: #444444;">• <strong>Glazing Frame Bite</strong> – The UFC requirements point to ASTM F2248. The glazing pane must be adhered on the inside face of insulated units to the framing either with structural silicone or glazing tape. The only way to have a bite with out tape or silicone is under the alternative of blast testing.</span><br />
<br />
<span style="background-color: white; color: #444444;"></span><br />
<span style="background-color: white; color: #444444;">• <strong>Alternative of Blast Testing</strong> – All of the above requirements may be usually be neglected with submittal of appropriate blast testing in accordance with ASTM F 1642. Many times this has already been performed by the manufacturer. However, if the proposed size of the glass and span of the mullions exceed that which was tested, you may be required to go back and fulfill all of the other requirements. Usually anchors from the framing to the structure are still required to be designed and submitted even with the blast testing results.</span><br />
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<span style="background-color: white; color: #444444;"></span><span style="background-color: white; color: #444444;">So, I hope this helps with your decision to go after some of these types of projects. The government recovery money is finally making it down the glazing industry. Just make sure that you have the right help to get the job done. Really these projects aren’t that bad, they just sound much worse than their “bite”.</span>JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com1tag:blogger.com,1999:blog-1180571880335866178.post-12195623153658302582010-04-30T07:47:00.000-05:002010-04-30T07:51:13.475-05:00Avoid Delays On Recovery Funded Projects<span style="font-family:arial;font-size:85%;color:#000000;">The glazing industry is starting to see the trickle down of government recovery money, but it’s not without a price. These projects are tagged with important features that glaziers will do well to be aware of. Most of the projects are for Department of Defense installations or GSA and have blast resistance requirements. <br /><br />A significant percentage of the recovery money ends up in the hands of architectural firms responsible for design and construction oversight. The design budgets are nice and fat and many of the architectural firms hire blast load consultants to provide design input, write specifications, and …review your submittals during the construction phase. So now the typical submittal has to jump through an additional hoop. The blast load consultant is usually eager to make their value known, and that translates to a necessity for every “t” being crossed and every “i” dotted.<br /><br />Submittals which are rejected (for what ever reason) require time, effort and often a tangible dollar amount to be resubmitted. Sometimes the blast load consultants may not be altogether familiar with glazing systems and this results in a nightmare of rejections and resubmittals. Glazing contractors who want to cash in on the recovery money should be prepared for the additional efforts that are being required.<br /><br />Projects with recovery earmarks are good business when you understand their process.<br /><br />Stay tuned! Next time we’ll cover some of the items typically required in the submittals for blast resistant glazing. </span>JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com0tag:blogger.com,1999:blog-1180571880335866178.post-23046411664457960842010-04-11T08:14:00.000-05:002010-04-11T08:17:14.973-05:00Antiterrorism: Blast-resistant Glazing Systems<span style="color:#333333;"><span style="font-family:arial;">The environment of rapidly evolving antiterrorism codes has left estimators and manufacturers in a whirlwind of confusion asking themselves, “Why do blast resistant requirements seem to be a moving target?” It’s important for us to understand what is driving this part of the glazing industry. A great emphasis has been placed on protecting the inhabitants of government buildings from flying shards of glass due to explosion. The U.S. government will be investing great amounts of capital into protective glazing systems during the next 10 to 15 years to make the changes necessary to their existing buildings and for all new construction. The two major codes driving the changes are GSA/Interagency Security Committee Security Design Criteria and the U.S. Department of Defense Unified Facilities Code UFC 4-010-01, Minimum Antiterrorism Standards for Buildings. The UFC code requires all future DoD programming beginning in 2004 to include blast resistant glazing systems. Over the last couple of years we have begun to see many of these projects entering into construction and it’s essentially the same story for the GSA’s programmed projects.</span> </span><br /><span style="color:#333333;"></span><br /><span style="color:#333333;">For more insight on this topic see:</span><br /><br /><a href="http://www.glassmagazine.com/article/commercial/antiterrorism-blast-resistant-glazing-systems-and-moving-target">http://www.glassmagazine.com/article/commercial/antiterrorism-blast-resistant-glazing-systems-and-moving-target</a>JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com2tag:blogger.com,1999:blog-1180571880335866178.post-88814469593917176512010-04-09T07:46:00.001-05:002010-04-09T07:52:38.529-05:00Government Bid Lists - glass & glazing specific<span style="font-family:arial;color:#333333;"><strong>Do you want the best industry specific government bid list?</strong> </span><br /><span style="font-family:arial;color:#333333;"></span><br /><span style="font-family:arial;color:#333333;">Checkout: </span><a href="http://www.jeistructural.com/web/govt-bids"><span style="font-family:arial;color:#333333;">http://www.jeistructural.com/web/govt-bids</span></a><br /><span style="font-family:arial;color:#333333;"></span><br /><span style="font-family:arial;color:#333333;">Recovery money is starting to flow into the glass and glazing industry. Now is the time to position your company to recieve business.</span>JEI Structural Engineeringhttp://www.blogger.com/profile/08350848021600278494noreply@blogger.com1