Dear Omar,<div><br></div><div>If you are providing both energy modeling and functioning as building performance advisor providing design assistance, be sure to factor in effort for each project phase.</div><div><br></div><div>
<b>Schematic Design</b></div><div>Sketch Models to evaluate form, massing, orientation, architectural alternates. Here you are either comparing a simplified baseline to simplified proposed designs, or you are comparing multiple proposed designs with each other. Be clear on the metric of performance per project goals. Energy use or cost or carbon, etc. This will depend on whether energy is purchased or generated on site.</div>
<div><br></div><div><b>Design Development</b></div><div>Your first round of Performance Rating Method models, one baseline and one proposed model. Some design decisions will have been made by the design team but a number of assumptions will still need to be made. The purpose of this round of modeling is to benchmark the project against project LEED targets, e.g. "are we still good for Silver, or are we down to Certified".</div>
<div><br></div><div><b>LEED Model</b></div><div>In an ideal situation you are able to salvage your Design Development phase efforts, but the reality of projects may require you to bring your model back into wizard mode, reconfigure zoning and window placement, and then either patch in systems from a previous model through text file, or if the system design has evolved significantly, you may need to build from scratch.</div>
<div><br></div><div>When all is said and done in this type of consultancy, you are building 4+ models, including working models, all to differing levels of detail.</div><div><br></div><div><br></div><div><br></div><div><br>
<div class="gmail_quote">On Thu, May 12, 2011 at 4:56 PM, James V Dirkes II, PE <span dir="ltr"><<a href="mailto:jim@buildingperformanceteam.com">jim@buildingperformanceteam.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="color:#1F497D">Dear Omar,</span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">My opinion is that you’ve done the harder project already – an existing building!</span></p>
<p class="MsoNormal"><span style="color:#1F497D">For a LEED certification you often have more freedom in certain areas, such as occupancy and equipment schedules because all schedules do not need to be precise – they’re just someone’s best estimate. In an <u>existing</u> building model, you must get fairly precise so that your model matches the utility bills.</span></p>
<p class="MsoNormal"><span style="color:#1F497D">For LEED, you have:</span></p><p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">One geometry description (length, width, height, windows)</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">One set of schedules for occupancy and diversity</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">One set of information about “process” equipment</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">2 sets of materials (Walls, Roof, windows for Baseline per 90.1 and actual)</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">2 sets of HVAC equipment (Baseline and actual)</span></p>
<p style="margin-left:1.0in"><span style="font-family:"Courier New";color:#1F497D"><span>o<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">Carefully consider zoning before you begin and review the requirements for Baseline systems in 90.1. You may have more than one system type, especially if some areas of the building have significantly different schedules or other criteria.</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">2 reports (generally “ABUPS” is needed for each model) which describe the key differences between the systems and their performance</span></p>
<p style="margin-left:1.0in"><span style="font-family:"Courier New";color:#1F497D"><span>o<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">Including performance in sub-categories such as “lights”, “cooling”, “heating” as described in the LEED documentation</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">1 comparison of the 2 systems which results in an overall operating <u>cost</u> comparison.</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">Some time with LEED online to load all of your reports</span></p>
<p><span style="font-family:Symbol;color:#1F497D"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="color:#1F497D">Possible time to discuss and explain results with the LEED reviewer</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">I normally exclude from my scope the documentation of all of the mandatory requirements in Sections 5-10 of 90.1. These are normally much easier to document if you are the designer, since the information is readily at hand and, presumably, you have incorporated them purposefully during the design process. I also state that we do NOT guarantee any LEED points whatsoever; that’s the designer’s option. The modeler is only documenting <u>estimated performance</u> what has been designed, not guaranteeing its performance. Finally, we also state that the performance is estimated, not necessarily even close to what will actually occur. I show some typical language below.</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">As you can see, I’m not saying “40 hours”. Rather, compare what you know about the cost for an existing building to the items which are different in a LEED certification for a new building, make an estimate using that information. I hope that is helpful!</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal" style="margin-left:.25in;line-height:12.0pt"><span style="font-family:"Century Schoolbook","serif""><span>1.<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-family:"Century Schoolbook","serif"">Energy models are not intended or expected to match closely with actual energy use. They ARE expected to provide a reasonable basis from which to judge overall patterns and enable comparison of design options. <br>
New buildings, especially, represent challenges which are not precisely quantifiable by an energy model. These include:</span></p><p class="MsoNormal" style="margin-left:.5in;line-height:12.0pt"><span style="font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-family:"Century Schoolbook","serif"">Patterns of occupancy and lighting use are not established</span></p>
<p class="MsoNormal" style="margin-left:.5in;line-height:12.0pt"><span style="font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-family:"Century Schoolbook","serif"">Equipment, including office PCs and copiers, has not been installed and it is not known how much power will be used nor how often.</span></p>
<p class="MsoNormal" style="margin-left:.5in;line-height:12.0pt"><span style="font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-family:"Century Schoolbook","serif"">Weather patterns vary from year to year, while the energy model uses a “typical” weather pattern.</span></p>
<p class="MsoNormal" style="margin-left:.5in;line-height:12.0pt"><span style="font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-family:"Century Schoolbook","serif"">Equipment efficiencies, control sequences and controls calibration normally vary from planned, design information. </span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D"> </span></p><div><p class="MsoNormal" align="center" style="text-align:center">
<b><span style="font-size:13.5pt;color:#1F497D">The Building Performance Team<br></span></b><b><span style="color:#1F497D">James V. Dirkes II, P.E., LEED AP, BEMP<br></span></b><span style="color:#1F497D">1631 Acacia Drive NW<br>
Grand Rapids, MI 49504<br><a href="tel:616%20450%208653" value="+16164508653" target="_blank">616 450 8653</a></span></p></div><div class="im"><p class="MsoNormal"><span style="color:#1F497D"> </span></p><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Omar Delgado<br>
<b>Sent:</b> Thursday, May 12, 2011 7:08 PM<br><b>To:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> [Bldg-sim] Energy Model Cost</span></p></div>
</div><p class="MsoNormal" style="margin-left:.5in"> </p></div><p class="MsoNormal" style="margin-left:.5in">Greetings everyone,</p><div><div></div><div class="h5"><p class="MsoNormal" style="margin-left:.5in"> </p><p class="MsoNormal" style="margin-left:.5in">
I have a question regarding the cost of an energy model for a LEED project. Every energy model I've done so far has been for </p><p class="MsoNormal" style="margin-left:.5in">existing buildings, mainly for optimization purposes. However, I received an RFP to model a five-story, 41,500 sq. ft. building</p>
<p class="MsoNormal" style="margin-left:.5in">that's currently on the design phase and is pursuing the LEED-NC Silver certification. I really have no idea what would be a fair </p><p class="MsoNormal" style="margin-left:.5in">
price for this model since I'm going to have to use Appendix G (ASHRAE 90.1) to evaluate the difference between the base </p><p class="MsoNormal" style="margin-left:.5in">and proposed buildings. I don't know how much extra effort this will take. I know the procedure, just haven't done it before.</p>
<p class="MsoNormal" style="margin-left:.5in"> </p><p class="MsoNormal" style="margin-left:.5in">Can you shed any light on this issue?</p><p class="MsoNormal" style="margin-left:.5in"> </p><p class="MsoNormal" style="margin-left:.5in">
Thanks in advance!</p><p class="MsoNormal" style="margin-left:.5in"> </p><p class="MsoNormal" style="margin-left:.5in"><i><span lang="ES-PR" style="font-size:10.0pt;font-family:Papyrus">Omar A. Delgado Colón, P.E., MEnvM., LEED AP BD&C</span></i></p>
<p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:10.0pt;font-family:Papyrus">Vice President</span></i></p><p class="MsoNormal" style="margin-left:.5in"><b><span style="color:#FF8000">Ener</span></b><b><span>Mech</span></b></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt">PMB 340</span></p><p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt">130 Winston Churchill Ave.</span></p><p class="MsoNormal" style="margin-left:.5in">
<span lang="ES-PR" style="font-size:10.0pt">San Juan, PR 00926-6018</span><span lang="ES-PR"></span></p><p class="MsoNormal" style="margin-left:.5in"><span lang="ES-PR" style="font-size:10.0pt">Cel. <a href="tel:%28787%29%20224-6537" value="+17872246537" target="_blank">(787) 224-6537</a></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="ES-PR"><a href="http://odelgado@enermechpr.com" target="_blank">odelgado@enermechpr.com</a></span></p><p class="MsoNormal" style="margin-left:.5in"><span lang="ES-PR"><a href="mailto:info@enermechpr.com" target="_blank">info@enermechpr.com</a></span></p>
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<br></blockquote></div><br><br clear="all"><br>-- <br><div><br></div><div><font size="2"><br></font></div><div><p>Arpan Bakshi,<span style="border-collapse:collapse;font-family:arial, sans-serif"><i> </i>LEED AP BD+C</span><span style="color:rgb(64, 64, 64);font-size:12px;font-weight:normal"></span></p>
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