HomeMy WebLinkAboutREV ENERGY CALCS COMMENTS10/6/21, 8:15 AM Gmail - Energy Calcs - Building Deparment Comments
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G.M. Worley, Inc. <gmworleyinc@gmail.com>
Energy Calcs - Building Deparment Comments
Mike Thornton <Mike_Thornton@smithservices.org>Mon, Sep 13, 2021 at 2:55 PM
To: "G.M. Worley, Inc." <gmworleyinc@gmail.com>
Cc: Bill Skopelja <wgskopelja44@comcast.net>
HI MYRANDA…ENCLOSED ARE REVISED CALCULATIONS.
I HOPE THAT MY RESPONSE BELOW WILL HELP CLEAR
UP ANY CONFUSION.
From: G.M. Worley, Inc. [mailto:gmworleyinc@gmail.com]
Sent: Thursday, September 09, 2021 2:51 PM
To: Mike Thornton
Subject: Energy Calcs - Building Deparment Comments
Good afternoon Mike,
This is in regards to the William and Regina Skopelja project:
Would you mind taking a look at your energy calcs to make sure we don't have an error somewhere? Below is the
comment I got from the St. Lucie Building Department.
PLEASE CLARIFY; CEILING R = 20.0 FOAM R20 IS CORRECT. THE CEILING AND
THE ROOF ARE ACTUALLY ONE ASSEMBLY.
AND WALL R = 19.0 ON TYPICAL WALL SECTION ON SHEET A-4 THE EXTERIOR CBS WALL
IS AT LEAST R-9 CORE-FIL FOAM w/R-4 INSULATION BOARD;
R-19 IS ONLY A SMALL SECTION OF THE EXTERIOR WALL, THEREFORE,
I HAVE TO CALCULATION WITH THE LESSER R-VALUE, NOT WITH THE
GREATER VALUE OF R-19.
VS. CEILING R = 1.0 IN THIS CASE, BECAUSE THE CEILING IS SOMEWHAT
10/6/21, 8:15 AM Gmail - Energy Calcs - Building Deparment Comments
https://mail.google.com/mail/u/0?ik=cf5c83400c&view=pt&search=all&permmsgid=msg-f%3A1710813940734222452&simpl=msg-f%3A17108139407…2/2
UNCONVENTIONAL FOR A RESIDENCE, THE ROOF IS ACTUALLY THE
CEILING. SO, I HAVE TO ENTER AT LEAST ONE COMPONENT ON THE
“CEILING” SCREEN IN MY CALCULATIONS, USING R-1, SO THAT IT
WOULD QUALIFY AS A “STRUCTURE”.
AND CBS R = 9.0 ON PAGE 1 OF 5 OF THE ENERGY CALCULATIONS. I HAD TO CHANGE THE
DESIGNATION OF THE CBS WALL. THE NEW INPUT IS “POLYSTYRENE
BEAD AGGREGATE-EXTERIOR”. IF THERE WAS NOT ANY 3/4"
INSULATION BOARD, IT WOULD ONLY SHOW UP AS R-0 FOR THE
EXTERIOR WALL. THE PROGRAM AUTOMATICALLY TAKES INTO
ACCOUNT THE MINIMUM R-VALUE OF THE POLYSTYRENE BEAD
AGGREGATE, SO IT ONLY WANTS US TO SHOW THE R-VALUE OF THE
INSULATION BOARD, WHICH IS R-4. (I HAVE ENCLOSED AN
EXPLANATION OF THIS. IT IS CALLED “CURRENT WALL”, FROM
THE HELP SECTION OF MY CALCULATIONS. I HIGHLIGHTED IT
FOR YOU).
THE NUMBERS THAT ARE ENTERED ON 10a OF PAGE 1 of 5, SPELL OUT
“POLYSTYRENE BEAD AGGREGATE-EXTERIOR”, BUT, THEY INTERFERE
WITH THE R-4.0 RATING OF THE ¾” INSULATION BOARD.
(THE FLORIDA SOLAR ENERGY CENTER IN COCOA SAID YOU ARE
WELCOME TO CALL THEIR TECH SUPPORT TEAM TO VALIDATE
MY CLAIMS. I HAVE BEEN IN CONTACT WITH JEFF M. ABOUT
THIS. THEIR PHONE NUMBER IS: (321) 323-7255
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