![]() The standard also added climate zones 0A (hot and humid) and 0B (hot and dry) because Climate Zone 1 is about as hot as Miami, and there are warmer places on our planet. This means less insulation is required for construction in those areas. A perfect example is Wisconsin, where the southern 40% of the state and most of the population was moved from Climate Zone 6A, under which Green Bay falls, to 5A-the same as Chicago. ![]() Because many of the criteria in Standard 90.1 are determined by climate zone, including envelope insulation and many HVAC requirements, this can be particularly impactful. ![]() In 2016, the standard is in single-column format for easier reading on computer monitors, is 388 pages long, and has added shading of alternate columns and italicizing of defined terms.ĪSHRAE Standard 169-2013: Climactic Data for Building Design Standards updated the climate maps throughout the world based on warming trends over the most recent 30 years of compiled weather data. In 2013, the standard was published in a two-column format and was 278 pages long. ![]() Regardless of the minimum code in force, compliance with the latest version of ASHRAE 90.1 will save energy, and each change must meet the cost-effectiveness criteria based on standard engineering economics using a "scalar" method described in this document.įormatting has changed significantly. ![]()
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