climate carbon energy footprints footprint regions horticulture aggie hardiness usda tamu xeriscape lubbock mcallen toursmaps reneesgarden humid standards codes chapters code administration chapter five covers side there zones determining iecc provisions iecc pdffiller form washoecounty tmy2 iecc nebraska iecc energy building current code 2009 codes ashrae zones louisiana energy climate iecc comcheck codes ashrae standard current 2007 code building manufactured mobile energy homes efficient standards higher comfort housing mean better nrdc marje efficiency opportunities improve istockphoto courtesy many there climate requirements iecc code zones building various usi science texas iecc counties classification climate selected zone 2006 three statewide electricity residences implementation savings demand capacity analysis single code ashrae hvac standards specifying code enforcement international building 2009 iecc describing specific code conservation energy international sheathing greenbuildingadvisor mathew iecc hospitality sustainable council climate miami humid subarctic rhode island iecc building energy current code code enforcement residential international 2009 kentucky iecc energy building codes comcheck compliance current code hardiness ashrae zones baseline breakdown estimate roofs iecc ashrae ashrae electricity fineas shgc illinois c402 table changes iecc commentary pre envelope significant meeting fenestration factor maximum requirements modified within section building