ANSI/ASHRAE Addendum A To ANSI/ASHRAE Standard 169-2013
ANSI/ASHRAE Addendum a toANSI/ASHRAE Standard 169-2013Climatic Data forBuilding DesignStandardsApproved by ASHRAE and the American National Standards Institute on July 31, 2020.This addendum was approved by a Standing Standard Project Committee (SSPC) for which the Standards Committee hasestablished a documented program for regular publication of addenda or revisions, including procedures for timely, documented, consensus action on requests for change to any part of the standard. Instructions for how to submit a change canbe found on the ASHRAE website e latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org) or fromASHRAE Customer Service, 180 Technology Parkway NW, Peachtree Corners, GA 30092. E-mail: orders@ashrae.org. Fax:678-539-2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in US and Canada). Forreprint permission, go to www.ashrae.org/permissions. 2020 ASHRAEISSN 1041-2336
ASHRAE Standing Standard Project Committee 169Cognizant TC: 4.2, Climate InformationSPLS Liaison: Walter GrondzikDrury B. Crawley*, ChairJoshua New*, Vice-ChairParag Rastogi*, SecretaryRiad G. Assaf*Evyatar ErellJack N. LottRobert J. MorrisMichael Roth*Didier J. Thevenard*Russell Vose*Justin Wong* Denotes members of voting status when the document was approved for publicationASHRAE STANDARDS COMMITTEE 2020–2021Drury B. Crawley, ChairRick M. Heiden, Vice ChairEls BaertCharles S. BarnabyRobert B. BurkheadThomas E. CappellinDouglas D. FickWalter T. GrondzikSusanna S. HansonJonathan HumbleSrinivas KatipamulaGerald J. KettlerEssam E. KhalilMalcolm D. KnightJay A. KohlerLarry KoumaCesar L. LimJames D. LutzKarl L. PetermanErick A. PhelpsDavid RobinLawrence J. SchoenSteven C. SillRichard T. SwierczynaChristian R. TaberRussell C. TharpTheresa A. WestonCraig P. WrayJaap Hogeling, BOD ExOWilliam F. McQuade, COConnor Barbaree, Senior Manager of StandardsSPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is definedby the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved this Standard as an ANS, as“substantial agreement reached by directly and materially affected interest categories. This signifies the concurrence of more than a simple majority,but not necessarily unanimity. Consensus requires that all views and objections be considered, and that an effort be made toward their resolution.”Compliance with this Standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation.ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The ProjectCommittee Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, allmust be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees.The Senior Manager of Standards of ASHRAE should be contacted fora. interpretation of the contents of this Standard,b. participation in the next review of the Standard,c. offering constructive criticism for improving the Standard, ord. permission to reprint portions of the Standard.DISCLAIMERASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information and acceptedindustry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systemstested, installed, or operated in accordance with ASHRAE’s Standards or Guidelines or that any tests conducted under its Standards or Guidelineswill be nonhazardous or free from risk.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, bysuggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other informationthat may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformanceto them is completely voluntary.In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.ANSI is a registered trademark of the American National Standards Institute.
ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital formis not permitted without ASHRAE's prior written permission.(This foreword is not part of this standard. It is merely informative and does not contain requirementsnecessary for conformance to the standard. It has not been processed according to the ANSI requirementsfor a standard and may contain material that has not been subject to public review or a consensus process.Unresolved objectors on informative material are not offered the right to appeal at ASHRAE or ANSI.)FOREWORDStandard 169 provides a comprehensive source of climate data for those involved in building design. It has beenestablished to provide a variety of climatic information used primarily for the design, planning, and sizing ofbuildings’ energy systems and equipment. This standard is referenced in other standards, such as Standards 90.1,90.2, and 189.1.The data presented in this standard are compiled from the 2017 ASHRAE Handbook—Fundamentals, Chapter 14,“Climatic Design Information,” and other data developed specifically for this standard from ASHRAE RP-1699,“Updating the ASHRAE Climatic Data for Design and Standards.”The data and tables have been completely revised and updated from Standard 169-2013. The standard now alsoincludes the weather and shielding factor (WSF) required in Standard 62.2-2016. The standard includes data for8118 locations throughout the world, an increase of 2554.Where changes are shown in the text, new text is shown by underline and deleted text shown by strikeout. Due tothe large increase in the number of locations covered in this station and the resulting changes, some tables arereplaced in their entirety rather than using strikeout and underline, indicated by italics.ANSI/ASHRAE Addendum a to ANSI/ASHRAE Standard 169-20131
ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital formis not permitted without ASHRAE's prior written permission.Addendum a to 169-20133. DEFINITIONS, ABBREVIATIONS, AND ACRONYMS3.1 Definitionsdegree-day: the difference in temperature between the outdoor mean temperature over a 24-hour period and a givenbase temperature. For the purposes of determining building envelope requirements, tThe classifications are definedas follows:cooling degree-day base 50 F, CDD50 (10 C, CDD10): for any one day, when the mean temperature is more than50 F (10 C), there are as many degree-days as degrees Fahrenheit or Celsius temperature difference between themean temperature for the day and 50 F (10 C) (mean temperature minus 50 F [10 C]). Annual cooling degree-days(CDDs) are the sum of the degree-days over a calendar year.heating degree-day base 65 F, HDD65 (18.3 C, HDD18): for any one day, when the mean temperature is less than65 F (18.3 C), there are as many degree-days as degrees Fahrenheit or Celsius temperature difference between and65 F (18.3 C) and the mean temperature for the day (65 F [18.3 C] minus the mean temperature). Annual heatingdegree-days (HDDs) are the sum of the degree-days over a calendar year.3.2 Abbreviations and AcronymsDBAvg average daily dry-bulb temperature, F ( C)DBSD standard deviation of average daily dry-bulb temperature, F ( C)Hours 8/4 12.8/20.6 number of hours between 8 a.m. and 4 p.m. with DB between 55 F and 69 F (12.8 C and20.6 C)N/A not availablePrecip liquid precipitation, in. (mm)PrecAvg average precipitation, in. (mm)PrecMax maximum precipitation, in. (mm)PrecMin minimum precipitation, in. (mm)PrecStd standard deviation of precipitation, in. (mm)RadAvg monthly mean daily all-sky radiation, Btu/ft2-day (kWh/m2-day)Sd standard deviation of daily average temperature, F ( C)Tavg average temperature, F ( C)WSAvg wind speed, mph (m/s)WSF weather and shielding factor (1/h), see ASHRAE Standard 62.2-20162ANSI/ASHRAE Addendum a to ANSI/ASHRAE Standard 169-2013
ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital formis not permitted without ASHRAE's prior written permission.4. CLIMATIC DESIGN DATA AND CLIMATE ZONESNormative Appendix A comprises data for 5564 8118 U.S., Canadian, and international locations. This informationgenerally represents annual and monthly percentiles of occurrence of temperature, various measures of humidity,and wind speed for use in the design of building energy and ventilation systems. These data also include HDD andCDD annual average values and the number of hours between 8 a.m. and 4 p.m. when the dry-bulb temperature isbetween 55 F and 69 F (13 C and 21 C) heating and cooling design temperatures. A sample of this climatic datais provided in Table A-1 for Atlanta, Georgia, USA. Design conditions for all 5564 8118 locations are locatedonline at the following location:[link]Table A-2 in Normative Appendix A provides thermal climate zone definitions. Tables A-3, A-5, and A-6 inNormative Appendix A lists climate zones and other key climatic data for U.S., Canadian, and internationallocations and includes links to the design conditions contain the WMO#, latitude, longitude, climate zoneassignment, and weather and shielding factor (WSF) for the United States, Canada, and other international locations,respectively. Table A-3 also contains the climate zones for all U.S. counties along with climate locations withineach county.5. U.S. CLIMATE ZONES BY COUNTYNormative Appendix B contains the climate zones for all U.S. counties. The information for U.S. counties ispresented in the form of a map in Figure (Figure AB-2) and Table A-4B-1 for the U.S. Table A-3 provides criteriafor determining the climate zones of international locations for which general climate summary information isavailable.56. INTERNATIONAL CLIMATE ZONE MAPSInformative Appendix C B provides illustrative climate zone maps for major countries and continents. These mapsdo not supersede the information in Normative Appendix A. The maps are one-half-degree latitude by one fiveeighths-degree longitude resolution. For this reason, the data and climate zones for specific locations outside the U.S. presented in Normative Appendix A shall be used. These maps are provided to show general locations of theclimate zones.ANSI/ASHRAE Addendum a to ANSI/ASHRAE Standard 169-20133
ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital formis not permitted without ASHRAE's prior written permission.(This is a normative appendix and is part of this standard.)NORMATIVE APPENDIX ACLIMATIC DESIGN DATA AND CLIMATE ZONESA1. CLIMATIC DESIGN CONDITIONS Time zone code (e.g., NAE Eastern Time, USA and Canada). A spreadsheet in the accompanying data filesTable A-2 lists all the time zone codes used in the tables of climatic design conditions. The time zone codesembody the offset from UTC as well as any applicable daylight savings time scheme (in effect in 2017).Period analyzed (e.g., 82–06 90-14 data from 1982 to 2006 1990 to 2014 were used) A1.1.2 Annual Cooling, Dehumidification, and Enthalpy Design Conditions Extreme maximum wet-bulb temperature, F ( C)A1.1.3 Extreme Annual Design Conditions Wind speed corresponding to the 1.0%, 2.5%, and 5.0% annual cumulative frequency of occurrence in mph(m/s)Extreme maximum wet-bulb temperature in F ( C)Mean and standard deviation of extreme annual minimum and maximum dry-bulb temperature in F ( C)5-, 10-, 20-, and 50-year return period values for minimum and maximum extreme dry-bulb temperature in F( C)5-, 10-, 20-, and 50-year return period values for minimum and maximum extreme wet-bulb temperature in F( C)A2. MONTHLY CLIMATIC DESIGN CONDITIONSMonthly design conditions are divided into subsections as follows.A2.1 Temperatures, Degree-Days, and Degree-Hours, Wind, and Precipitation 4Average temperature in F ( C). This parameter is a prime indicator of climate and is also useful to calculateheating and cooling degree-days to any base.Standard deviation of average daily temperature in F ( C). This parameter is useful to calculate heating andcooling degree-days to any base.Heating and cooling degree-days (bases 50 F and 65 F [10 C and 18.3 C]). These parameters are useful inenergy estimating methods. They are also used to classify locations into climate zones in Appendix AB.Cooling degree-hours (bases 74 F and 80 F [23.3 C and 26.7 C]). These are used in various standards, such asStandard 90.2.Monthly average wind speed, mph (m/s). This parameter is useful to estimate the wind potential at a site;however, the local topography may significantly alter this value, so close attention is needed.Average precipitation, in (mm). This parameter is used to calculate climate zones for Standard 169 and is ofinterest in some green building technologies (e.g., vegetative roofs).ANSI/ASHRAE Addendum a to ANSI/ASHRAE Standard 169-2013
ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital formis not permitted without ASHRAE's prior written permission. Standard deviation of precipitation, in (mm). This parameter indicates the variability of precipitation at the site.Minimum and maximum precipitation, in (mm). These parameters give extremes of precipitation and are usefulfor green building technologies and stormwater management.A2.2 Monthly Design Dry-Bulb, Wet-Bulb, and Mean Coincident Temperatures. These values are derivedfrom the same analysis that results in the annual design conditions. The monthly summaries are useful whenseasonal variations in solar geometry and intensity, building or facility occupancy, or building use patterns requireconsideration. In particular, These values can be used when determining air-conditioning loads during periods ofmaximum solar radiation. The values listed in the table include dry-bulb temperature corresponding to the 0.4%, 2.0%, 5.0%, and 10.0% cumulative frequency of occurrencefor the indicated month in F ( C), and the mean coincident wet-bulb temperature in F ( C) andwet-bulb temperature corresponding to the 0.4%, 2.0%, 5.0%, and 10.0% cumulative frequency of occurrencefor the indicated month in F ( C), and the mean coincident dry-bulb temperature in F ( C)For a 30-day month, the 0.4%, 2.0%, 5.0%, and 10.0% values of occurrence represent the value that occurs or isexceeded for a total of 3, 14, 36, or 72 hours, respectively, per month on average over the period of record. Monthlypercentile values of dry-bulb or wet-bulb temperature may be higher or lower than the design conditionscorresponding to the same nominal percentile, depending on the month and the seasonal distribution of theparameter at that location. Generally, for the hottest or most humid months of the year, the monthly percentile valuewill exceed the design condition for the same element corresponding to the same nominal percentile. For instance,Table A-1 shows that the annual 0.4% design dry-bulb temperature in Atlanta, GA is 93.94.0 F (34.4 C). The 0.4%monthly dry-bulb temperature exceeds 93.94.0 F (34.4 C) for June, July, and August, with values of 94.75 F(34.97 C), 97.96 F (36.64 C), and 96.37.4 F (35.76.3 C), respectively.A general, very approximate rule of thumb is that the n% annual cooling design condition is roughly equivalent tothe 5n% monthly cooling condition for the hottest month; that is, the 0.4% annual design dry-bulb temperature isroughly equivalent to the 2% monthly design dry-bulb temperature for the hottest month; the 1% annual value isroughly equivalent to the 5% monthly value for the hottest month, and the 2% annual value is roughly equivalentto the 10% monthly value for the hottest month. A2.5 All-Sky Solar Radiation. All-sky solar radiation parameters are useful for evaluating the potential of solartechnologies (e.g., solar heating, photovoltaics), which are valuable in the design of net-zero energy buildings.Parameters listed in the tables are: Monthly average daily global radiation on a horizontal surface. This is a traditional way to characterize the solarresource at a site.Standard deviation of monthly average daily radiation on a horizontal surface. This parameter gives an idea ofthe year-to-year variability of the solar resource at the site.A2.6 Climate Filenames and Order. Tables A-3, A-5, and A-6 lists the 5564 8118 stations alphabetically, withthe exception that for U.S., and Canadian, and other locations, respectively. are placed first and second in the table.Climatic design conditions for each location in both I-P and SI units are located online at [link]. The files are namedby the WMO#. Thus, the filenames for Atlanta are 722190 p.pdf for I-P units and 722190 s.pdf for SI units. Usersmay also access the files by opening the file named StnList p.pdf (for I-P units) or StnList s.pdf (for SI units),which gives the alphabetical listing of stations and the corresponding WMO#, and then clicking on the WMO# link. A4. CLIMATE ZONESANSI/ASHRAE Addendum a to ANSI/ASHRAE Standard 169-20135
ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital formis not permitted without ASHRAE's prior written permission.Tables A-3, A-4, A-5, and A-6 listgive the latitude, longitude, climate zone and weather shielding factor (WSF) andmean annual precipitation for locations in the United States, Canada, and international locations, respectively. Forlocations that are not listed either in Tables A-3, A-5 or A-6, use the Climate Zone Definitions in Section A-3 andTable A-23 to determine both the climate zone letter and number. Figure A-2 contains the county-level climate zonemap and Table A-4 lists climate zones by state and county for the for the United States. A Python script forcalculating climate zones is included in the online data.Delete existing Table A-1 (I-P and S-I) and replace with following6ANSI/ASHRAE Addendum a to ANSI/ASHRAE Standard 169-2013
ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital formis not permitted without ASHRAE's prior written permission.TABLE A-1 Design Conditions for Atlanta, GA, USA (I-P)ATLANTA HARTSFIELD-JACKSON, GA, USALat:33.640NLong:84.430WElev:1027StdP:14.16Time Zone:-5.00 (NAE)Period:90-14WMO#:722190WBAN:13874Annual Heating and Humidification Design ConditionsColdestMonth(1)Heating DB99.6%Humidification DP/MCDB and HR99.6%99%HRMCDBDPHRColdest month WS/MCDB0.4%1%WSMCDBWSMCDBMCDBMCWS/PCWDto 99.6% 339.211.8320MCWBWB(1)Annual Cooling, Dehumidification, and Enthalpy Design ConditionsHottestMonth(2)(3)HottestMonthDB Range0.4%MCWBDBCooling DB/MCWB1%DBMCWB2%DB0.4%MCDBEvaporation WB/MCDB1%WBMCDBMCWS/PCWDto 0.4% 8.376.386.575.484.88.7300Enthalpy/MCDB1%Enth
Approved by ASHRAE and the American National Standards Institute on July 31, 2020. This addendum was approved by a Standing Standard Project Committee (SSPC) for which the Standards Committee has established a documented program for regular publication of addenda or revisions, including procedures for timely, docu-
ANSI/ASHRAE Addendum d to ANSI/ASHRAE Standard 62.1-2016 Ventilation for Acceptable Indoor Air Quality Approved by the ASHRAE Standards Committee on January 20, 2018; by the ASHRAE Board of Directors on January 24, 2018; and by the American National Standards Institute on February 21, 2018. This addendum was approved by a Standing Standard Project Committee (SSPC) for which the Standards .
ANSI/ASHRAE Addendum l to ANSI/ASHRAE Standard 62.1-2016 Ventilation for Acceptable Indoor Air Quality Approved by the ASHRAE Standards Committee on June 26, 2019; by the ASHRAE Board of Directors on August 1, 2019; and by the American National Standards Institute on August 26, 2019. This addendum was approved by a Standing Standard Project Committee (SSPC) for which the Standards Committee .
ANSI/ASHRAE Addendum af to ANSI/ASHRAE Standard 62.1-2016 Ventilation for Acceptable Indoor Air Quality Approved by the ASHRAE Standards Committee on June 26, 2019; by the ASHRAE Board of Directors on August 1, 2019; and by the American National Standards Institute on August 26, 2019.
ANSI/ASHRAE Addendum al to ANSI/ASHRAE Standard 62.1-2016 Ventilation for Acceptable Indoor Air Quality Approved by the ASHRAE Standards Committee on June 26, 2019; by the ASHRAE Board of Directors on August 1, 2019; and by the American National Standards Institute on August 26, 2019.
ANSI/ASHRAE Addendum aj to ANSI/ASHRAE Standard 62.1-2016 Ventilation for Acceptable Indoor Air Quality Approved by the ASHRAE Standards Committee on June 22, 2019; by the ASHRAE Board of Directors on June 26, 2019; and by the American National Standards Institute on July 24, 2019.
ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 55-2010 Thermal Environmental Conditions for Human Occupancy Approved by the ASHRAE Standards Committee on October 2, 2012; by the ASHRAE Board of Directors on October 26, 2012; and by the American National Standards Institute on November 22, 2012.
ASHRAE ADDENDA ANSI/ASHRAE/IES Addenda bi and bt to ANSI/ASHRAE/IESNA Standard 90.1-2007 Energy Standard for Buildings Except Low-Rise Residential Buildings Approved by the ASHRAE Standards Committee on June 26, 2010; by the ASHRAE Board of Directors on June 30, 2010; by the IES Board of Directors on June 23, 2010; and by the American National Standards Insti-tute on July 1, 2010. These .
ANSI/ASHRAE Addendum d to ANSI/ASHRAE Standard 55-2017 3 the method used yields the same results. The ASHRAE Thermal Comfort Tool3 is permitted to be used to comply with this section. Figure 5.3.1.1 provides graphical examples of comfort zones using the Analytical Comfort
