[Equest-users] Questions regarding baseline envelope

Tue Oct 13 15:49:41 PDT 2015

I would personally stick hard to Detailed edit mode (not returning to the
wizards).

Import standard 90.1 baseline constructions for your baseline case, then
assign those constructions to only the envelope portions that were
renovated.  That’s to say, if it’s existing to remain without changes,
don’t change it (for LEED).  There is some degree of “manual” effort
required, but this can be greatly reduced with some rudimentary leveraging
of user defaults (and also user default expressions).

Also for LEED – be sure you’re filling in the envelope portion of the
section 1.4 tables (spreadsheet from LEED online) while you’re at this –
you’ll note they direct you to match proposed case for existing components,
and you’ll want to document this while it’s fresh in your mind.

I’ve attached a file I’ve shared a few times in the past over the lists –
this is one of those “snippets” I’ve updated over time but isn’t yet
complete/comprehensive.  I haven’t done LEED simulations for zone 8 yet so
you’ll note I have some things defined (roofs, walls) which match other
climate zone requirements, but not others (exposed floors) – should be a
good starting point in any case, and I hope if you use this you’ll consider
updating the snippet for the community at large =).  If you’re terribly
keen to avoid creating anything – I think RMI has a separate 90.1
construction library floating about in the free domain as well.

Hope that helps!

~Nick

*NICK CATON, P.E.*
*Owner*

*Caton Energy Consulting*
  306 N Ferrel

  Olathe, KS  66061

  office:  785.410.3317

www.catonenergy.com

*From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
Behalf Of *John Aulbach
*Sent:* Thursday, October 02, 2014 6:53 PM
*To:* Chris Baker; Shaun Martin; equest-users at lists.onebuilding.org
*Subject:* Re: [Equest-users] Questions regarding baseline envelope

Chris:

That is why I stay in the DD Wizard to building the ASHRAE 90.1 model;, so
that all of what you speculate is the easier way comes true.

THEN, I can go to the Detail Edit and put in my lighting watts/sf, any
process loads, and outside lights. Done with the BASE model.

NOW I make a copy of the Base, call it Proposed, then make all the changes
to make the Proposed model.

In THIS way, I have my Base model NAILED. Most important to those LEED
reviewers.

John R. Aulbach, PE

On Thursday, October 2, 2014 4:38 PM, Chris Baker <CBaker at cci-alliance.com>
wrote:

The model is for LEED approval.

The proposed building is done, the baseline building is in progress in
equest.

To bring the building into compliance, however, what is the methodology
most commonly used for the building envelope in particular when creating
the baseline model?

For example, do I need to manually change all exterior walls to “steel
framed” above grade walls to be in compliance with table 5.5-8?

Do all of these items need to be “manually” changed to the equivalent on
table 5.5-8?  Roof & Insulation, Above grade walls & insulation, Floors to
steel joist, etc…

And if so, it would be faster to go back into the DD wizard for this,
correct?

Thanks!

-Chris

*From:* Shaun Martin [mailto:smartin at shaunmartinconsulting.com
<smartin at shaunmartinconsulting.com>]
*Sent:* Thursday, October 02, 2014 1:45 PM
*To:* Chris Baker; equest-users at lists.onebuilding.org
*Subject:* RE: [Equest-users] Questions regarding baseline envelope

Hi Chris,

Your question doesn’t state why you are doing the models.  If you want to
show code, or LEED etc, compliance then you use Table 5.5.8.  If you need
to show energy savings, for a utility program incentive or similar need,
then you would use existing conditions.

Shaun

*From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org
<equest-users-bounces at lists.onebuilding.org>] *On Behalf Of *Chris Baker
*Sent:* Thursday, October 02, 2014 2:04 PM
*To:* equest-users at lists.onebuilding.org
*Subject:* [Equest-users] Questions regarding baseline envelope

So my proposed building is done.  I’m working on my baseline building and a
little confused on how to model the baseline building envelope/exterior.

This project is a renovation in climate zone 8.  Most of the interior walls
remain.

All the original roof structures remain , All exterior walls remain.  No
new exterior walls were constructed.

All exterior walls received a 5-1/2” EIFS system.  All roof structures
received 8-1/2” foam system buildup with new 2” klip-rib style metal
decking.

The only thing that didn’t remain on the envelope was the existing decking
and all windows and doors got replaced.

The proposed building is modeled to reflect all this in equest – it is very
close.

The building was a chapel and it will remain a chapel
(non-residential/religious worship).

So here’s the question…

In the baseline model, do I model the pre-existing configuration or do I
change all the wall systems completely to match Appendix G, table 5.5-8?

Table 5.5-8 sais the exterior walls, above grade, should show steel framed.

Also, with regard to the roof, would the baseline roof need to be modeled
as it was originally, taking into account the energy usage that the
building would have had without the foam buildup we added.

Or would I need to just go off of table 5.5-8 again? – in my case the
baseline would be “insulation entirely above deck” from that table.

OR should I just do parametric runs to tweak the baseline values down to be
in compliance??

What would be an acceptable practice given the nature of the renovation and
that the existing building remained?

Chris Baker
CCI CAD Drafter

------------------------------

CCI-Alliance Confidentiality notice: This message is intended only for the
person to whom addressed in the text above and may contain privileged or
confidential information. If you are not that person, any use of this
message is prohibited. We request that you notify us by reply to this
message, and then delete all copies of this message including any contained
in your reply. Thank you.

------------------------------

CCI-Alliance Confidentiality notice: This message is intended only for the
person to whom addressed in the text above and may contain privileged or
confidential information. If you are not that person, any use of this
message is prohibited. We request that you notify us by reply to this
message, and then delete all copies of this message including any contained
in your reply. Thank you.

_______________________________________________
Equest-users mailing list
http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
To unsubscribe from this mailing list send  a blank message to
EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20151013/b9cc4cb1/attachment-0005.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Ashrae 90,1 Baseline Constructions (5-8-15).inp
Type: application/octet-stream
Size: 5188 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20151013/b9cc4cb1/attachment-0005.obj>