# PUBLIC CODE CHANGE PROPOSAL FORM

FOR PUBLIC PROPOSALS TO THE INTERNATIONAL CODES

2012-2014 CODE DEVELOPMENT CYCLE

CLOSING DATES: Group A Codes: January 3, 2012 Group B Codes: January 3, 2013 Group C Codes: January 6, 2014

*See Item 3 of these instructions for additional information concerning Group A and Group B Code Development Committ ees Responsibilities*

1)

Name: Date: Jurisdiction/Company:

Submitted on Behalf of:

Address: City: State: Zip Code:

Phone: Ext. Fax: E-mail address (see # 4 below):

2) Copyright Release: In accordance with Council Policy #28 Code Developmen t, all Code Change Proposal s, Floor Modifications and Public Comments are required to include a copyright release. A copy of the copyright release form is included at the end of thi s form.

Please follow the directions on the form. This form as well as an alternative release form can also be downloaded from the ICC website

at www.iccsafe.org

. If you have previously executed the copyright release for this cycle, please check the below:

______ 2012-2014 Cycle copyright release on file

3) Code: Indicate appropriate International Code (s) associated with this Public Proposal – Please use Acronym: ___IECC_____

If you have also submitted a separate coordination ch ange to another I-Code, please indicate the code: ________ (See section below for list of names and acronyms for the International Codes).

NOTE : Sections of the International Codes that have a letter desi gnation in brackets in front of th em are the responsibility of a

different committee than the committee normal ly responsible for that code. For instan ce, Section 301.1.4 of the IEBC has a [B] in front of it, meaning that this section is the re sponsibility of one of the IBC Code Devel opment Committees (in this case, IBC-S). Any proposed changes to Section 301.1.4 will be heard by the IBC-Structural committee.

Therefore, some code change proposals to Group B code text may be due by January 3, 2012, in order to be heard by Group A code development committees, and vice versa (proposed revision to a Group A code due January 3, 2013.) Please go to www.iccsafe.org/responsibilites for detailed information on Group A and Group B Code Development Committee responsibilities.

4) Multiple Proposals: A proponent shall not submit multiple code change propos als to the same code section. When a proponent submits multiple code cha nge proposals to the same section, the proposals sh all be considered as in complete proposals and not processed in accordance with Section 4.3 of CP #28. This restriction shall not apply to code change proposals that attempt to address differing subject matter within a code section.

5) Referenced Standards: Check here if this code change propos al includes reference to a standard that is not currently referenced in
one of the I-Codes. _____

NOTE : If a new referenced standard is proposed, a copy of the standard must be provided by th e proponent of the code change proposal. (This code change proposal will be considered incomplete and not processed if the new standard is not submitted in at least

consensus draft form in accordan ce with Section 3.6 of Council Policy CP #28.) If you have forwarded a copy of the standard(s) to ICC please check below: ______ Copy of new referenced standard(s) sent. (P lease check: Electronic ___ or Hard Copy ___)

6) E-mail address: Your email address will be published with your code change proposal unless you check here: ______

7) Information required: Be sure to format your proposal and include all information as indicated be low and in the Code Change Proposal Instructions’ section on Page 2 of this form.8) Format: Proposals should be sent to the office below via regular mail or email. An e-mail submittal is preferred, including an electronic version, in either WordPerfect or Word (see proposal formatting section on Page 2 of this form).

Please use a separate form (see page 3) fo r each proposal submitted. Note: All code changes received will receive an acknowle dgment by approximately two weeks after the code change deadline. Pl ease contact the ICC staff listed be low if you have not received an acknowledgment by two weeks afte r the code change deadline.

Group A Group B Group C Send to: IBC - International Building Code

IFGC - International Fuel Gas Code

IMC - International Mechanical

Code IPC - International Plumbing Code

IPSDC - International Private Sewage Disposal Code IADMIN – International Administrative Code (Chapter 1 of I-Codes except the IRC and the IECC, and Referenced Standards Updates) IEBC - International Existing Building Code IECC - International Energy Conservation

Code

IFC - International Fire Code

ICC PC - ICC Performance Code IPMC - International Property Maintenance

Code

IRC - International Residential Code

IWUIC - International Wildland-Urban

Interface Code IZC - International Zoning Code IgCC – International Green

Construction Code ISPSC – International Swimming Pool and Spa Code International Code Council Chicago District Office Attn: Dynice Broadnax

4051 West Flossmoor Road Country Club Hills, IL 60478-

5795

Fax: 708/799-0320 codechanges@iccsafe.org



### CODE CHANGE PROPOSAL INSTRUCTIONS

Please provide all of the following items in your code change proposal (see form on page 3). Your proposal should be entered on page 3 as a separate file. However, please read the instruc tions provided below for each pa rt of the code change proposal

. The sections identified in parentheses are the applicable sections from CP #28 Code Development. The full procedures can be downloaded from www.iccsafe.org.

PROPOSAL FORMATTING :

Show the proposal (see form on page 3) using strikeout , underline format. At the beginning of each sec tion, one of the following instruction
lines are also needed:
•Revise as follows
•Add new text as follows
•Delete and substitute as follows
•Delete without substitution

The only formatting that is needed is BOLDING, STRIKEOUT AND UNDERLINING . Please do not provide additional formatting such as tabs, columns etc. as th is will be done by ICC. DO NOT USE THE TRACKING CHANGES OPTION, AUTOMATIC NUMBERING, OR ANY OTHER ADVANCED FORMATTING TOOLS PROVIDED BY WORD.

SEPARATE GRAPHIC FILES ARE REQUIRED FOR GRAPHIC MATERIALS. Graphic materials (Graphs, maps, drawings, charts, photographs, etc.) must be submitted as sepa rate electronic files in .CDR, IA, TIF or .JPG format (300 DPI Minimum resolution; 600 DPI or more preferred) even though they may also be embedded in your Word or WordPerfect submittal

.

SUPPORTING INFORMATION : (3.3.4 & 3.4)

The following items are required to be includ ed in your proposal (see form on page 3):
1. The proponent shall clearly state the purpose of the proposed code change
2. The proponent shall provide a logical explanation which clearly shows why the current Code provisions are inadequate or overly restrictive, specifies the shortcomings of the current Code prov isions and explains how such pr oposals will improve the Code.
3. The proponent shall substantiate the proposed code change base d on technical information and s ubstantiation. A minimum of two copies of all substantiating inform ation shall be submitted.
4. The p ro p onent shall submit a biblio g ra p h y of an y substantiatin g material submitted with the code chan g e p ro p osal.

REFERENCED STANDARDS : (3.4 & 3.6)

List any new referenced standards that are proposed to be refere nced in the code and provide a minimum of two copies. See also Item 5 on page 1 regarding proposed new referenced st andards. Updates to currently referenced standards will be processed as a Group B p roposal. For ICC rules on referenced standards, see Section 3.6 of CP # 28. Additional copies will be required for committee members. I CC staff
will p rovide y ou with a mailin g list for the a pp ro p riate committees.

COST IMPACT : (3.3.5.6)

The proponent shall indicate one of the following regardi ng the cost impact of the code change proposal:
1 ) The code chan g e p ro p osal will increase the cost of construction; or2) The code change proposal will not increase the cost of construction. The proponent should submit information that supports their claim. Any information submitted will be considered by the code dev elopment
committee. This information will be included in the bibliography of the published code change proposal.

CODE CHANGE SUBMITTAL EXAMPLE



# Code: IBC –12/13

705.1

Proponent: John Doe, P.E., Acme Building Corporation, Inc, representing self

Revise as follows:

705.1 General. Each portion of a building separated by one or more a fire walls that comply complies with the provisions of this section Section 705 shall be considered a separate building.

Reason: A fire wall complying with Section 705 establishes the equi valent of separate buildings on either side of the fire wall. This proposal provides text that more succinctly states this purpose of a fire wall.

Cost Impact: The code change proposal will not in crease the cost of construction.

Public Hearing: Committee: AS AM D Assembly: ASF AMF DF



### CODE CHANGE PROPOSAL FORM (See instructions on page 2) 

# Code: ____IECC____ –12-14

Code Sections/Tables/Figures Proposed for Revision (3.3.2); Note: If the proposal is for a new section, indicate (new). Table Section R103.2, Section R202 , Table R402.1.1, Table R402.1.3.

Proponent: Name/Company/Representing (3.3.1) : ( NOTE: DO NOT USE ACRONYMS FOR YOUR COMPANY OR ORGANIZATIONAL NAME)

Modify Section R103.2 as follows:

R103.2 Information on construction documents. Construction documents shall be drawn to scale upon suitable material. Electronic media documents are permitted to be submitted when approved by the code official . Construction documents shall be of sufficient clarity to indicate the loca tion, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include, but are not limited to, as applicable, cardinal directions; insulation materials and their R -values; fenestration U

factors and SHGCs; area-weighted U -factor and SHGC calculations; mechani cal system design criteria; mechanical and service water heating system and equipment types, sizes and efficiencies; economizer description; equipment and systems controls; fan motor horsepower (hp) and controls; du ct sealing, duct and pipe insulation and location; lighting fixture schedule with wattage and control narrative; and air sealing details.

Add definitions to Section R202 as follows:

VERTICAL GLAZING. Glazing other than skylights.

WEST-FACING GLAZING AREA. The area of vertical glazing facing between 45 degrees south of west and 30 degrees north of west, inclusive.

Revise Table R402.1.1 as follows:

CLIMATE

ZONE FENESTRATION

U

-FACTOR b SKYLIGHT b

U

-FACTOR GLAZED
FENESTRATION (remainder of table unchanged)SHGC b ,e, j

1 NR 0.75 0.20 / 0.25

2 0.40 0.35 0.65 0.20 / 0.25
3 0.35 0.55 0.20 / 0.25 4 except

Marine 0.35 0.20 0.55 0.40

5 and Marine

4 0.32 0.20 0.55 NR

6 0.32 0.20 0.55 NR

7 and 8 0.32 0.20 0.55 NR

For SI: 1 foot = 304.8 mm.

a. R -values are minimums. U -factors and SHGC are maximums. When insulation is installed in a cavity which is less than th e label or design thickness of th e insulation, the installed R -value of the insulation sh all not be less than the R -value specified in the table.

b. The fenestration U -factor column excludes skylights. The SHGC column applies to all glazed fenestrati on. Exception: Skylights may be excluded fro m glazed fenestration SHGC requirements in Climate Zones 1 through 3 where the SHGC for such sk ylights does not exceed 0.30.

c. “15/19” means R-15 continuous insulation on the interior or exte rior of the home or R-19 cavity insulation at the interior o f the basement wall. “15/19” shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the i nterior or exterior of the home.

“10/13” means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity insulation at the interior of t he basement wall. d. R-5 shall be added to the required slab edge R -values for heated slabs. Insulation depth shall be the dept h of the footing or 2 feet, whichever is less in Climate Zones 1 through 3 for heated slabs. e. There are no SHGC requirements in the Marine Zone. f. Basement wall insulation is not required in warm-humid locations as defined by Figure R301.1 and Table R301.1. g. Or insulation sufficient to f ill the framing cavity, R-19 minimum. h. First value is cavity insulation, sec ond is continuous insulation or insulated siding, so “13+5” means R-13 cavity insulatio n plus R-5 continuous insulation or insulated siding. If structural sheat hing covers 40 percent or less of the exterior, continuous insulation R -value shall be permitted to be reduced by no more

than R-3 in the locations wh ere structural sheathing is used – to main tain a consistent total sheathing thickness.

i. The second R -value applies when more than half the insulation is on the interior of the mass wall. j. The second SHGC applies when the home’s west-facing glazing area is less than or equal to 10% of the home’s total glazed fenestration area.

Revise Table R402.1.3 as follows:

CLIMATE

ZONE FENESTRATION

U

-FACTOR b (remainder of table unchanged)

1 0.50

2 0.40 0.35

3 0.35 4 except

Marine 0.35 0.20

5 and Marine

4 0.32 0.20

6 0.32 0.20

7 and 8 0.32 0.20

Reason:

The proposed U-factor and SHGC reductions are cost effective, as shown in the attached analysis.

Cost Impact: The code change propos al will increase the cost of construction.

Public Hearing: Committee: AS AM D Assembly: ASF AMF DF

## COPYRIGHT RELEASE FOR 2012-2014 PROPOSALS, MODIFICA TIONS and PUBLIC COMMENTS
SUBMITTED ON
ICC CODES
PRODUCED & PUBLISHED BY THE 

# INTERNATIONAL CODE COUNCIL

This form is required for all Proposals, Floor Modifications and Public Comments submitted to the International Code Council. Only one signed Copyright release form is required for the entire 2012- 2014 Cycle and will be kept on file and can be used for all Proposal, Floor Modification and Public Comment submittals you submit to ICC unless you r epresent multiple entities. An executed form is required for each entity represented.

I hereby grant and assign to ICC all rights in copyri ght I may have in any authorship contributions I make to ICC in the 2012-2014 Cycle in connection with any proposal and public comment, in its original form submitted or revised form, including written and verbal modifications submitted in
accordance with Section 5.5.2 of CP #28. I understand that I will have no rights in any ICC publications that use such contributions in the fo rm submitted by me or another similar form and certify that such contributions ar e not protected by the copyright of any other person or entity.



### Signature:

________________________________________________________________

Please type or print full name:

Jurisdiction/Company: ______

_______________________ ____________________

Entity Represented: _______

_______________________ _____________________

Contact info: Phone: _________ Email: ____________

_______________________

Date signed: ________________

_____________________ ____________________

PLEASE FAX OR MAIL THE SIGNED COPYRIGHT RELEASE TO:

Fax: ICC Codes & Standards Department - 708-799-0320

Email: dbroadnax@iccsafe.org

Mail: ICC Codes & Standards Development Chicago District Office

4051 W. Flossmoor Road Country Club Hills, IL 60478-5795

### Window U-factor and SHGC

Description

Heat gain through windows is characterized by the Sola r Heat Gain Co-efficient (SHGC) and the heat lost
through windows is characterized by the heat transfer coefficient (U-f actor). For this concept, U-factors
lower than the 2012 IECC code requirements are simulated in the colder climate zones and SHGCs lower
than the 2012 IECC code requirements are simu lated in the warmer climate zones.

IECC Climate Zone 2012 IECC window requirements
U-factor|SHGC Windows considered in this
concept U-factor|SHGC

1 NR|0.25 NR|0.2

2 0.40|0.25 0.35|0.2

3 0.35|0.25 0.35|0.2
4 except marine 0.35|0.40 0.20|0.40

5 & 4-marine 0.32|NR 0.20|NR

6 0.32|NR 0.20|NR

7 & 8 0.32|NR 0.20|NR



### Energy Cost Savings

Figure 1 below shows energy cost savings for each climate zone.

Figure 1: Energy Cost Savings for the concept over the 2012 IECC code

### Cost Effectiveness

The cost for windows with lower SHGC is based on the Building Component Community Cost database
(BC3) 1 . The cost for windows with SHGC 0.2 is extra polated from cost for windows with SHGC 0.28 and
0.25. The cost for R-5 (U=0.2 Btu/hr-ft2-F) wind ows is derived from DOE’s High Efficiency Windows

Volume Purchase Initiative 2 . This initiative has a target increment al cost of $4/ft2 for R-5 windows over
EnergyStar windows. According to manufacturer data collected, two manufacturers had incremental costs of approximately $2/sf and two others had a cost of around $4/sf. It is ex pected that by the time the 2015
IECC is adopted by states , market transformation will drive down the cost of R-5 windows. We have
assumed an incremental cost of $2/sf for these reasons. EnergyStar require s a U of 0.32 in colder climates
so the additional cost of going from U 0.35 in climate zone 4 to the EnergyStar level of U 0.32 is taken into
account while calculating the incremental cost of R-5 windows. Table 1 below summarizes incremental
costs used in this analysis. These costs are material co sts alone and it is assumed that the installation cost

will remain the same for all windows.

The lifetime of windows is assumed to be equal to the period of analysis - 30 years.

Table 1: Window costs used in this analysis



### SHGC Window Cost
($/ea) 3 

### U

‐ factor Window Cost
($/sf) 4



### 0.28 287.20 0.35 34.62

0.25 289.21 0.32 35.09

0.2 292.56* 0.32 ‐ > 0.2 2.00

*indicates extrapolated values

These costs are adjusted using location multipliers specified in Table 2 below, to generate incremental
costs by state. State specific fuel costs are used in this analysis as specified in Table 3. Figure 2 shows
Life Cycle Cost for this measure, by Climate Zone.



### Additional Analysis and discussion

Low SHGC windows are usually tinted and there are concerns that they may have limited acceptance
among home owners on account of aesthetics. While we are unaware of any survey s or studies supporting
this claim, we understand that this may be a valid concern. Additional analyses were conducted to
evaluate an alternative of maintaining the SHGC at the 2012 IECC level and limiting the amount of glazing
facing west to yield similar energy savings as wo uld result from using windows with lower SHGC.

Our analyses indicate that an appropriate limit on west facing glazing is 10% of the total glazed

fenestration area of the home . There are multiple ways of achieving this limit: the extra glazing on the
west facing wall can be moved to adjacent walls; west facing glazing area can be reduced; or the house
can be re-oriented favorably. The cost for all the above approaches would be negligible if they are
implemented at the design stage. Reducing glazing area may even reduce the first cost associated with the

measure. As such, we have assumed that all thes e approaches are zero-cost fixes and hence, costeffective

1 http://bc3.pnnl.gov/wik i/index.php/Main_Page

2 DOE R-5 windows initiative.

3 For 24”x42” vinyl casement windows from the BC3 database

4 http://bc3.pnnl.gov/wiki/image s/f/fa/Residential_Report.pdfTable 2: Cost mult ipliers by State



### Location State Climate

Zone Moisture
Regime multiplier

Miami FL 1 moist 0.884

Phoenix AZ 2 dry 0.928

Houston TX 2 moist 0.837

El Paso TX 3 dry 0.837

San Francisco CA 3 marine 1.142

Memphis TN 3 moist 0.863

Albuquerque NM 4 dry 0.903

Salem OR 4 marine 1.038

Baltimore MD 4 moist 0.956

Boise ID 5 dry 0.918

Chicago IL 5 moist 1.069

Helena MT 6 dry 0.936

Burlington VT 6 moist 0.933

Duluth MN 7 moist 1.06

Fairbanks AK 8 moist 1.336

Table 3: Fuel Costs by State



### Location State Climate

Zone Moisture
Regime Electricity

‐ winter ($/kWh) Electricity

‐

summer ($/kWh) Gas ($/thm) Oil ($/MBtu)

Miami FL 1 moist 0.117 0.117 1.532 23.7

Phoenix AZ 2 dry 0.099 0.117 1.306 23.7

Houston TX 2 moist 0.11 0.12 0.814 23.7

El Paso TX 3 dry 0.11 0.12 0.814 23.7

San Francisco CA 3 marine 0.149 0.156 0.943 23.7

Memphis TN 3 moist 0.095 0.095 0.862 23.7
Albuquerque NM 4 dry 0.099 0.116 0.791 23.7

Salem OR 4 marine 0.091 0.092 1.174 23.7

Baltimore MD 4 moist 0.134 0.151 1.039 23.7

Boise ID 5 dry 0.078 0.084 0.869 23.7
Chicago IL 5 moist 0.108 0.122 0.717 23.7

Helena MT 6 dry 0.091 0.096 0.795 23.7
Burlington VT 6 moist 0.158 0.155 1.433 23.13

Duluth MN 7 moist 0.103 0.108 0.833 23.7

Fairbanks AK 8 moist 0.166 0.171 0.839 23.7Figure 2: Life Cycle Cost for the concept over the 2012 IECC. Negative values indicate savings

.