![free download ashrae 90.1 free download ashrae 90.1](https://www.iesve.com/software/images/ve-pro/venavigators/ashrae-90.1/ashrae_90.1_navi.jpg)
Back to the Code: Changes in Envelope Performance In a long tab banded system, the purlins are exposed. Long tab banded systems typically do not offer fall protection.Īs you can see in the picture on the left, the purlins are covered by the fabric vapor retarder in a banded liner system. Another key difference is that the OptiLiner ® banded liner system is an OSHA-compliant fall protection system. However, banded liner systems tend to achieve better U-values than long tab banded systems. Long tab banded systems are usually non-proprietary and meet the specifications of a filled cavity (FC) system.īoth systems provide high-R insulation to help meet stringent energy codes. Liner Systems (Ls) and Long Tab Banded Systems (FC): What’s the Difference?įirst, liner systems (Ls) such as OptiLiner ® are typically proprietary and, as you probably guessed, must meet ASHRAE’s requirements in order to be defined as a liner system.
![free download ashrae 90.1 free download ashrae 90.1](https://www.researchgate.net/profile/Joshua-Kneifel/publication/268215729/figure/tbl3/AS:613985304969230@1523396912289/2-Energy-Efficiency-Component-Requirements-for-the-ASHRAE-901-2007-ASHRAE-901-2010.png)
Once that decision is made, the entire building envelope, including mechanicals and lighting, must follow the same path. The building designer will have to make the decision to pursue either IECC 2015 or ASHRAE 90.1-2013. The choices are the same for the rest of the envelope. I detail the key differences between the systems below. Both options fulfill the metal building insulation requirements it’s just a matter of preference. If you haven’t used Liner Systems (Ls) or Filled Cavity/Long Tab Banded Systems (FC) in the past, you will need to start using them. This is a huge jump, and many metal building contractors will feel the pressure.
#Free download ashrae 90.1 code
Many states currently at the IECC 2009 code are bypassing IECC 2012 altogether (or have already done so) and adopting IECC 2015. If your state’s current code is based on the older IECC 2009 and ASHRAE 90.1-2007 Standard, you’ll see more significant envelope changes. Also, note that I’m basing the upcoming changes on comparisons of the current IECC 2012 code and the ASHRAE 90.1-2010 Standard. I briefly covered this overview in a prior blog post, but it can’t hurt to go over it again, especially when it comes to complex code information. Vermont (state-specific code modeled after IECC 2015)Īlso, the new code cycle will be effective in Georgia January 1, 2018. Michigan (adopting IECC 2015/ASHRAE 2013 in April 2017)