Table R301.2(1) of the International Residential Code for One- and Two-Family Dwellings is hereby deleted and a new table R301.2(1) is added to read as follows:

TABLE R301.2(1) CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA

WIND DESIGN				SEISMIC DESIGN CATEGORYf	SUBJECT TO DAMAGE FROM
SPEEDd (mph)	TOPO­GRAPHIC EFFECTSk	SPECIAL WIND REGIONl	WIND-BORNE DEBRIS ZONEm		WEATHERINGa	FROST LINE DEPTHb	TERMITEc
115	NO	NO	NO	A	SEVERE	36-INCHES	YES

WINTER DESIGN TEMPe	ICE BARRIER UNDERLAYMENT REQUIREDh	FLOOD HAZARDSg	AIR FREEZING INDEXi	MEAN ANNUAL TEMPj
6° F	Yes	8/3/2009	1000	54.8° F

a.Where weathering requires a higher strength concrete or grade of masonry than necessary to satisfy the structural requirements of this code, the frost line depth strength required for weathering shall govern. The weathering column shall be filled in with the weathering index, “negligible,” “moderate” or “severe” for concrete as determined from Figure R301.2(4). The grade of masonry units shall be determined from ASTM C34, C55, C62, C73, C90, C129, C145, C216 or C652.

b.Where the frost line depth requires deeper footings than indicated in Figure R403.1(1), the frost line depth strength required for weathering shall govern. The jurisdiction shall fill in the frost line depth column with the minimum depth of footing below finish grade.

c.The jurisdiction shall fill in this part of the table to indicate the need for protection depending on whether there has been a history of local subterranean termite damage.

d.The jurisdiction shall fill in this part of the table with the wind speed from the basic wind speed map [Figure R301.2(5)A]. Wind exposure category shall be determined on a site-specific basis in accordance with Section R301.2.1.4.

e.The outdoor design dry-bulb temperature shall be selected from the columns of 97 ½-percent values for winter from Appendix D of the International Plumbing Code. Deviations from the Appendix D temperatures shall be permitted to reflect local weather climates or local weather experience as determined by the Building Official. [Also see Figure R301.2(1).]

f.The jurisdiction shall fill in this part of the table with the Seismic Design Category determined from Section R301.2.2.1.

g.The jurisdiction shall fill in this part of the table with (a) the date of the jurisdiction’s entry into the National Flood Insurance Program (date of adoption of the first code or ordinance for management of flood hazard areas), (b) the date(s) of the Flood Insurance Study and (c) the panel numbers and dates of all currently effective FIRMs and FBFM, or other flood hazard map adopted by the authority having jurisdiction, as amended.

h.In accordance with Sections R905.1.2, R905.4.3.1, R905.5.3.1, R905.6.3.1, R905.7.3.1 and R905.8.3.1, where there has been a history of local damage from the effects of ice damming, the jurisdiction shall fill in this part of the table with “YES.” Otherwise, the jurisdiction shall fill in this part of the table with “NO.”

i.The jurisdiction shall fill in this part of the table with the100-year return period air freezing index (BF-days) from Figure R403.3(2) or from the 100-year (99%) value on the National Climatic Data Center data table “Air Freezing Index- USA Method (Base 32° F).”

j.The jurisdiction shall fill in this part of the table with the mean annual temperature from the National Climatic Data Center data table “Air Freezing Index- USA Method (Base 32° Fahrenheit).”

k.In accordance with Section R301.2.1.5, where there is local historical data documenting structural damage to buildings due to topographic wind speed-up effects, the jurisdiction shall fill in this part of the table with “YES.” Otherwise the jurisdiction shall indicate “NO” in this part of the table.

l.In accordance with Figure R301.2(5)A, where there is local historical data documenting unusual wind conditions, the jurisdiction shall fill in this part of the table with “YES” and identify any specific requirements. Otherwise, the jurisdiction shall indicate “NO” in this part of the table.

m.In accordance with Section R301.2.1.2 the jurisdiction shall indicate the windborne debris wind zone(s). Otherwise, the jurisdiction shall indicate “NO” in this part of the table.

n.The jurisdiction shall fill in this section of the table using the Ground Snow Loads in Figure R301.2(6).