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Old 01-31-2017, 04:16 PM   #1
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Default Multi-Family Feeder Calc Spreadsheet or Software

We have our second very large mutli-family building just started in design. It's got 116 residential units plus commercial spaces and house loads. The last time we did this I came up with a very elaborate and apparently complicated spreadsheet that confounded our electrical plans reviewer (inspector). It had to be dumbed down considerably for him. I'm wondering if anyone out there is using a spreadsheet or simply app that will printout or export a simple report they like for the main feeders to the meter/main stacks that will feed all these apartments. I've looked at a number of things but nothing really clicks. I looked at what was on Durrand Associates and even bought it before realizing they have a maximum capability of only 30 units.
Suggestions??
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Old 01-31-2017, 05:24 PM   #2
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Don't you use software like AutoCAD MEP or Revit?

As you design with those they add the loads as you go. It is all about the "connectors" on the devices. You put in a VA load, load type and other information. As you install your different devices, the circuit manager will tally up your loads and demand factors. They will carry through all the way back to the service. So if you add six more high hats in the third floor lighting drawing the load will carry back to the first floor power drawing if that is where the service is. The load will show up in every panel all the way back, with demand factors. Panel schedules also get updated automatically as loads get added.

I am sure not everyone uses it for their calculations. That is where it all falls apart. A disconnection of what is in the drawings and what is in the panel schedules. I have seen some good examples of that as engineers switched to Revit.
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Old 01-31-2017, 06:33 PM   #3
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Cabletie, I have both. I haven't really been using Revit except to view things given to me in that form or export from it to ACAD when needed. I have the AutoCAD/MEP. Mostly I use the Architecture version along with the EDL plug-in from Accubid/Trimble. I've never used the MEP version to do risers or calcs before. I'll look into it just in case.
I was hoping someone had an Excel Spreadsheet like the one that's free on the Mike Holt site for single family residential. Seems like it shouldn't be very hard to put together and someone has to have thought of this well before I ever have. I started making my own but was hoping someone had already done it. Even if it was a purchase, it'd definitely save some time and keep me from reinventing the wheel here.
Thanks again... I'll look at the MEP module for this.
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Old 02-01-2017, 11:55 AM   #4
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Has anyone here ever used KalMate for the forms I'm talking about here?
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Old 02-01-2017, 05:48 PM   #5
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KalcMate, Not KalMate
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Old 09-29-2017, 03:27 PM   #6
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Default Thanks for the tip

I downloaded the program and am using it. It works for a lot more than Multi-Family Calculations.
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