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Energy and Ventilation Code Resources:

For permit applications through June 30, 2007

The following page includes resources that will help you prepare energy and ventilation code compliance documentation. This includes the code text, worksheets. If you're new to the code, we recommend you consult the Builders Field Guide.

Code Text: Washington State Energy Code, 2004 Second Edition, for permits issued after July 1, 2005 (revised 12/7/05) Update Pages Only: From WSEC 2004 Edition to WSEC 2004 Second Edition. RS29 Systems Analysis for Non Residential Buildings Washington State Ventilation and Indoor Air Quality Code, 2003 Edition, effective July 1, 2004 Washington State Building Code Council: Energy Code Interpretations

NEW  2004 Builder's Field Guide: Index Cover Introduction Chapter 1 Compliance Methods Chapter 2 Foundation Chapter 3 Framing Chapter 4 Insulation Chapter 5 Air Leakage Control Chapter 6 Plumbing Chapter 7 Heating/Cooling Chapter 8 Ventilation Chapter 9 Fireplaces and Wood Stoves Chapter 10 Default Heat Loss Calculations Supplement A Improving Forced Air Heating Supplement B Taking Credit For Air Leakage Control Supplement C Thermal Performance of Common Insulation Materials Supplement D Insulated Concrete Form Systems Supplement E Permeance Values for Common Building Materials Supplement F Common Duct Insulation Materials Supplement G Inspecting Attic Insulation Builder's Field Guide (entire document)

Worksheets

These worksheets assist in documenting compliance with the Washington State Energy Code, (WSEC). The worksheets help you develop residential building insulation packages only. For all other code provisions, read the energy code itself, or the Washington State Energy Code Builders Field Guide. Both can be downloaded from our web site.

There are several approaches for demonstrating code compliance. They range from simple to complex. We have detailed the advantages of each below.

Before you select a worksheet, determine the climate zone,

• Climate Zone 1. All counties not listed as climate zone 2.
• Climate Zone 2. Adams, Chelan, Douglas, Ferry, Grant, Kittitas, Lincoln, Okanogan, Pend Oreille, Spokane, Stevens, and Whitman counties.

Prescriptive Approach: For the Washington State Energy Code, the prescriptive approach is the simplest method of code compliance. You have an option of using a simple approach, or a detailed approach. The Simple Worksheet documents compliance using the unlimited glazing option, with little to no math. The Detailed Worksheet provides the tools to document compliance using other options, and the more complex exceptions Simple Worksheet: For single family and duplex dwellings only. Includes the unlimited glazing option only. One door, 24 square feet or less does not need to meet the code. [602.6 exception 1] Doors may qualify as vertical glazing. [602.6 exception 2] Download Simple Worksheets: Zone 1, Table 6-1 Zone 2, Table 6-2 Detailed Worksheet: For all residential building types. Includes all prescriptive options. Requires completion of detailed door and glazing schedules and calculation of conditioned floor area. Area weighted U-factors for glazing and doors included. One door, 24 square feet or less does not need to meet the code. [602.6 Exception 1]. Doors may qualify as vertical glazing [602.6 Exception 2]. Single glazing and garden window exception: [602.7.2,Exception]. These detailed worksheets can be completed by hand with the assistance of a calculator, or using Microsoft Excel. The instructions apply to either method. Detailed - By Hand Zone 1, Table 6-1 Zone 2, Table 6-2 Detailed - Using Excel Zone 1, Table 6-1 Zone 2, Table 6-2 Detailed - Instructions for both methods. Detailed Instructions

Component Performance Approach: These worksheets are designed to document the qualification of building designs by the component performance approach described in Chapter 5 of the Washington State Energy Code (WSEC). Read the copyright restrictions that appear on the first tab of the worksheet before you begin using the product. We have tested the worksheets with Microsoft® Excel® for Microsoft® Windows®. All functions should work with all Excel versions 95 or later. Excel 95 will work, but the "comments" will not appear. They also work on contemporary Macs. One note, we have seen some formatting problems develop because of default font selections. We have used Arial 10nbsp;point. If you change to this font, all formatting should be good. CPWorksheets contains a set of four Microsoft® Excel® worksheets. Instructions are available (above) in Adobe® Acrobat® .pdf. When you download the files, all files need to be placed on the C: drive in a folder called "Energy Code". Note: IF excel prompts you to update links click "No" or "Don't Update". Download the Instructions, CPWorksheets, and Library (Fourth Edition July 2004): CPWorksheets Instructions CPWorksheets: Zone 1 electric,  Zone 1 other,   Zone 2 electric,  Zone 2 other CPLibrary Note: In order to use the CPWorksheets, you will also need the CPLibrary worksheet. The CPLibrary provides the default component u-factors from Chapter 10 of the WSEC. These are the u-factors necessary to complete most projects. It is linked to the CPWorksheets. CPLibrary.xls must be installed in the same directory as the CPWorksheets, and must be open when data is entered in the CPWorksheets. If you have downloaded a previous version of the CPLibrary, there is no need to update this file. When the CPWorksheets were originally developed, the CPLibrary was included in the same archive file. Since that time, many users have updated their CPLibrary files with custom components. Continuing to include the CPLibrary in the CPWorksheet archive file could lead to inadvertent erasure of customized CPLibrary files. As a result, the CPLibrary is now available only as a separate download.

Systems Analysis Approach: WSU Energy Program no longer provides software that supports a systems analysis approach. We recommend that you select a DOE 2 based software package for this type of analysis. Use the WSU component performance worksheet to develop the target and proposed building envelope required by the code. Then load this information into a DOE 2 product and perform the systems analysis. For DOE 2 software, visit these sites http://gundog.lbl.gov/ OR http://energygauge.com/




Ventilation: Instructions for Whole House Ventilation Systems are required. WSU Energy Program has developed instructions for the two most common prescriptive options. Intermittent Whole House Ventilation Using Exhaust Fans Intermittent Whole House Ventilation Integrated with Forced Air System Fans that meet the Washington State Ventilation and Indoor Air Quality Code (VIAQ) standards are sometimes difficult to identify. The VIAQ requires fans to be tested at a static pressure of .25 inches w/c. Many fan listings rate the fan at .10 inches w/c. To identify fans that meet the standard, see the Home Ventilating Institute (HVI) products list, or ask for the manufacturers fan curve. Home Ventilating Institute HVI updates their certified products monthly in their HVI directory.

New 2004 WSEC Residential Additions Worksheet The 2004 WSEC Residential Additions Worksheet (in Excel) demonstrates compliance for a proposed addition where heat loss improvements in the existing home receive credit toward compliance. Perform a Chapter 5 Component Performance calculation only on the addition before using this form. Note: This worksheet is only applicable for additions under 750 ft2; all other additions must show full WSEC compliance as a stand alone project."

For more information




Funding for Washington State University Extension Energy Program's Energy Code Support is provided by the U.S. Department of Energy and the Northwest Energy Efficiency Alliance




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