Okla. Admin. Code § 748:20-6-8

Current through Vol. 42, No. 3, October 15, 2024

Section 748:20-6-8 - IRC[®] 2018 Chapter 3 Building Planning

Chapter 3 of the IRC® 2018 is adopted with the following modifications:

(1) Table R301.2(1) Climatic and Geographic Design Criteria. This table has been modified to fill in the blank cell in row 2 under the Ice Barrier Underlayment Required column in the first section of the table. This table has been modified to read: Table R301.2(1) Climatic and Geographic Design Criteria. The table contains two parts the first part has two rows and nine columns with two of columns that contain subcolumns. The second part of the table contains five rows and eight columns with the first row merged into one column that reads "Manual J Design Criteria" with a superscript "n" following the title to indicate footnote "n" is applicable to this portion of the table. The second part of the table and all the footnotes have not been modified. The table and the modification are described below:

(A) Row 1: The first row of part one contains the headers for each column in this portion of the table is described below:

(i) Row 1, column 1 header is entitled "Ground Snow Load" with a superscript "o" to indicate footnote "o" is applicable.

(ii) Row 1, column 2 header is entitled "Wind Design" and contains four subcolumns as listed below:

(I) Row 1, column 2, subrow 1 header is entitled "Speed (mph)" with a superscript "d" after the word "speed" to indicate footnote "d" is applicable.

(II) Row 1, column 2, subrow 2 header is entitled "Topographic Effects" with a superscript "k" to indicate footnote "k" is applicable.

(III) Row 1, column 2, subrow 3 header is entitled "Special Wind Region" with a superscript "l" to indicated footnote "l" is applicable.

(IV) Row 1, column 2, subrow 4 header is entitled "Windborne Debris Zone" with a superscript "m" to indicate footnote "m" is applicable.

(iii) Row 1, column 3 header is entitled "Seismic Design Category" with a superscript "f" to indicate footnote "f" is applicable.

(iv) Row 1, column 4 header is entitled "Subject to Damage From" and contains three sub-columns as listed below:

(I) Row 1, column 4, subcolumn 1 header is entitled "Weathering" with a superscript "a" to indicate footnote "a" is applicable.

(II) Row 1, column 4, subcolumn 2 header is entitled "Frost Depth Line" with a superscript "b" to indicate footnote "b" is applicable.

(III) Row 1, column 4, subcolumn 3 header is entitled "Termite" with a superscript "c" to indicate footnote "c" is applicable.

(v) Row 1 column 5 header is entitled "Winter Design Temp" with a superscript "e" to indicate footnote "e" is applicable.

(vi) Row 1, column 6 header is entitled "Ice Barrier Underlayment Required" with a superscript "h" to indicate footnote "h" is applicable.

(vii) Row 1, column 7 header is entitled "Flood Hazards" with a superscript "g" to indicate footnote "g" is applicable.

(viii) Row 1, column 8 header is entitled "Air Freezing Index" with a superscript "i" to indicate footnote "i" is applicable.

(ix) Row 1, column 9 header is entitled "Mean Annual Temp" with a superscript "j" to indicate footnote "j" is applicable.

(B) The second row of the first part has been modified to fill in the area under column 6 entitled "Ice Barrier and Underlayment Required" and is described below:

(i) Row 2, column 1 has been left blank for the authority having jurisdiction to complete based on local conditions as required in footnote "o."

(ii) Row 2, column 2 subcolumns 1 through 4 are described below:

(I) Row 2, column 2, subcolumn 1 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "d."

(II) Row 2, column 2, subcolumn 2 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "k."

(III) Row 2, column 2, subcolumn 3 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "l."

(IV) Row 2, column 2, subcolumn 4 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "m."

(iii) Row 2, column 3 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "f."

(iv) Row 2, column 4, subcolumns 1 through 3 are described below:

(I) Row 2, column 4, subcolumn 1 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "a."

(II) Row 2, column 4, subcolumn 2 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "b."

(III) Row 2, column 4, subcolumn 3 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "c."

(v) Row 2, column 5 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "e."

(vi) Row 2, column 6 has been filled in with the word "NO" to indicate Ice barrier underlayment is not required in Oklahoma.

(vii) Row 2, column 7 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "g."

(viii) Row 2, column 8 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "i."

(ix) Row 2, column 9 has been left blank for the authority having jurisdiction to complete based on local conditions as described in footnote "j."

(C) Row 3, the second part of the table has been merged into one column with the wording "Manual J Design Criteria" followed by a superscript "n" to indicate footnote "n" is applicable.

(D) Row 4 of the table has eight columns with the following headers:

(i) Row 4, column 1, contains the wording "Elevation."

(ii) Row 4, column 2, contains the wording "Latitude."

(iii) Row 4, column 3, contains the wording "Winter Heating."

(iv) Row 4, column 4, contains the wording "Summer Cooling."

(v) Row 4, column 5, contains the wording "Altitude Correction Factor."

(vi) Row 4, column 6, contains the wording "Indoor Design Temperature."

(vii) Row 4, column 7, contains the wording "Design Temperature Cooling."

(viii) Row 4, column 8, contains the wording "Heating Temperature Difference."

(E) Row 5 of the table has eight columns that have been left blank for the authority having jurisdiction to complete.

(F) Row 6 of the table has eight columns that have the following headers:

(i) Row 6, column 1, contains the wording "Cooling Temperature Difference."

(ii) Row 6, column 2, contains the wording "Wind Velocity Heating."

(iii) Row 6, column 3, contains the wording "Wind Velocity Cooling."

(iv) Row 6, column 4, contains the wording "Coincident Wet Bulb."

(v) Row 6, column 5, contains the wording "Daily Range."

(vi) Row 6, column 6, contains the wording "Winter Humidity."

(vii) Row 6, column 7, contains the wording "Summer Humidity."

(viii) Row 6, column 8, was left blank

(G) Row 7 of the table has eight columns that have been left blank for the authority having jurisdiction to complete.

(H) Under the table the following wording is shown: "For SI: 1 pound per square foot equals 0.0479 kPa, 1 mile per hour equals 0.447 meters per second."

(I) Footnote "a" reads: "Where weathering requires a higher strength concrete or grade of masonry than necessary to satisfy the structural requirements of this code, the frost 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."

(J) Footnote "b" reads: "Where the frost 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 finished grade."

(K) Footnote "c" reads: "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."

(L) Footnote "d" reads: "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."

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

(N) Footnote "f" reads: "The jurisdiction shall fill in this part of the table with the seismic design category determined from Section R301.2.2.1."

(O) Footnote "g" reads: "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 the currently effective FIRMSs and FBFMs or other flood hazard map adopted by the authority having jurisdiction, as amended."

(P) Footnote "h" reads: "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 a "YES." Otherwise, the jurisdiction shall fill in this part of the table with "NO."

(Q) Footnote "i" reads: "The jurisdiction shall fill in this part of the table with the 100- year return period air freezing index (BF-days) from Figure R403.3(2) or from the 100- year (99 percent) value on the National Climatic Data Center table Air Freezing Index- USA Method (Base 32 degrees Fahrenheit)."

(R) Footnote "j" reads: "The jurisdiction shall fill in this part of the table with the mean annual temperature from the National Climatic Data Center table 'Air Freezing Index- USA Method (Base 32 degrees Fahrenheit.)"

(S) Footnote "k" reads: "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."

(T) Footnote "l" reads: "In accordance with Figure R301.2(5)A, where there is local historical damage 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.

(U) Footnote "m" reads: "In accordance with Section R301.2.1.2 the jurisdiction shall indicate the wind-borne debris wind zone(s). Otherwise, the jurisdiction shall indicate "NO" in this part of the table."

(V) Footnote "n" reads: "The jurisdiction shall fill in these sections of the table to establish the design criteria using Table 1a or 1b from ACCA Manual J or established criterial determined by the jurisdiction."

(W) Footnote "o" reads: "The jurisdiction shall fill in this section of the table using the Ground Snow Loads in Figure R301.2(6)."

(2) Table R302.1(1) Exterior Walls. This table has been modified to change the requirements for minimum fire separation distance and delete sub-rows. This table has been modified to read: Table R302.1(1) Exterior Walls. The table contains five rows and three columns. Some rows have sub-rows, and some columns have sub-columns. The table has two footnotes at the end of the table and is described below:

(A) Row 1 contains the headers for each column, which are listed below from column 1 through column 3.

(i) Row 1, column 1 header is entitled "EXTERIOR WALL ELEMENT."

(ii) Row 1, column 2 header is entitled "MINIMUM FIRE-RESISTANCE RATING."

(iii) Row 1, column 3 header is entitled "MINIMUM FIRE SEPARATION DISTANCE."

(B) Row 2 contains two sub-columns within column 1. The second sub-column in column 1 has three sub-rows that continue through columns 2 and 3. The row is described below:

(i) Row 2, column 1, sub-column 1 is entitled "Walls."

(ii) Row 2, sub-row 1, column 1, sub-column 2, is entitled "Fire-resistance rated"

(iii) Row 2, subrow 1, column 2, contains the wording "1 hour-tested in accordance with ASTM E119, UL 263 or Section 703.3 of the International Building Code® with exposure from both sides."

(iv) Row 2, sub-row 1, column 3, contains the wording "0 feet."

(v) Row 2, sub-row 2, column 1, sub-column 2 is entitled "Not fire-resistance rated."

(vi) Row 2, sub-row 2, column 2, contains the wording "0 hours."

(vii) Row 2, sub-row 2, column 3, has been modified to change the fire separation distance to "equal to 3 feet."

(C) Row 3 contains two sub-columns within column 1. The second sub-column in column 1 has three sub-rows within that continue through columns 2 and 3. The row is described below:

(i) Row 3, column 1, sub-column 1 is entitled "Projections."

(ii) Row 3, sub-row 1, column 1, sub-column 2, is entitled "Not allowed" and has been deleted from the table along with the remaining content in columns 2 and 3.

(iii) Row 3, sub-row 2, column 1, sub-column 2, is entitled "Fire-resistance rated."

(iv) Row 3, sub-row 1, column 2, contains the wording "1 hour on the underside, or heavy timber, or fire-retardant-treated wood" with a superscript "a, b" at the end to indicate footnotes "a" and "b" are applicable.

(v) Row 3, sub-row 1, column 3, has been modified to change the minimum fire separation distance to "greater than 3 feet."

(vi) Row 3, sub-row 3, column 1, sub-column 3 is entitled "Not fire-resistance rated."

(vii) Row 3, sub-row 3, column 2, contains the wording "0 hours."

(viii) Row 3, sub-row 3, column 3, has been modified to change the minimum fire separation distance to "greater than or equal to 3 feet."

(D) Row 4 contains two sub-columns within column 1. The second sub-column in column 1 has three sub-rows 1 that continue through columns 2 and 3. The row is described below:

(i) Row 4, column 1, subcolumn 1 is entitled "Openings in walls."

(ii) Row 4, sub-row 1, column 1, sub-column 2 is entitled "Not allowed."

(iii) Row 4, sub-row 1, column 2, contains the wording "NA."

(iv) Row 4, sub-row 1, column 3, contains the wording "less than 3 feet."

(v) Row 4, sub-row 2, column 1, sub-column 2 is entitled "25 percent maximum of wall area" and has been deleted from the table along with the remaining content in columns 2 and 3.

(vi) Row 4, sub-row 3, column 1, sub-column 2 is entitled "Unlimited."

(vii) Row 4, sub-row 3, column 2, contains the wording "0 hours."

(viii) Row 4, sub-row 3, column 3, contains has been modified to change the minimum fire separation distance to "greater than or equal to 3 feet."

(E) Row 5 contains two sub-columns within column 1 and two sub-rows within columns 2 and 3. The row is described below:

(i) Row 5, column 1, sub-column 1 is entitled "Penetrations."

(ii) Row 5, column 1, subcolumn 2 is entitled "All."

(iii) Row 5, column 2, sub-row 1, contains the wording "Comply with Section R302.4."

(iv) Row 5, column 3, sub-row 1 contains the wording "less than 3 feet."

(v) Row 5, column 2, sub-row 2 contains the wording "None required."

(vi) Row 5, column 3, sub-row 2 has been modified to change the minimum fire separation distance to "greater than or equal to 3 feet."

(F) Under the table the following wording is listed "For SI: 1 foot equals 304.8 mm" and "NA equals Not Applicable."

(G) Footnote "a" reads: "The fire-resistance rating shall be permitted to be reduced to 0 hours on the underside of the eave overhang if fireblocking is provided from the wall top plate to the underside of the roof sheathing."

(H) Footnote "b" reads: "The fire-resistance rating shall be permitted to be reduced to 0 hours on the underside of the rake overhang where gable vent openings are not installed."

(3) Table R302.1(2) Exterior Walls - Dwellings with Fire Sprinklers. This table has been modified to change the requirements for minimum fire separation distance and delete sub-rows. This table has been modified to read: Table R302.1(2) Exterior Walls - Dwellings with Fire Sprinklers. The table contains five rows and three columns. Some rows have sub-rows and some columns have sub-columns. The table has three footnotes at the end of the table and is described below:

(A) Row 1 contains the headers for each column, which are listed below from column 1 through column 3.

(i) Row 1, column 1 header is entitled "EXTERIOR WALL ELEMENT."

(ii) Row 1, column 2 header is entitled "MINIMUM FIRE-RESISTANCE RATING."

(iii) Row 1, column 3 header is entitled "MINIMUM FIRE SEPARATION DISTANCE."

(B) Row 2 contains two sub-columns within column 1 and two sub-rows within the second sub-column of column 1 that continue through columns 2 and 3. The row is described below:

(i) Row 2 sub-column 1 is entitled "Walls."

(ii) Row 2, sub-row 1, column 1, sub-column 2, is entitled "Fire-resistance rated."

(iii) Row 2, sub-row 1, column 2, contains the wording "1 hour-tested in accordance with ASTM E119, UL 263 or Section 703.3 of the International Building Code® with exposure from outside".

(iv) Row 2, sub-row 1, column 3, contains the wording "0 feet."

(v) Row 2, sub-row 2, column 1, sub-column 2 is entitled "Not fire-resistance rated."

(vi) Row 2, sub-row 2, column 2, contains the wording "0 hours."

(vii) Row 2, sub-row 2, column 3, contains the wording "3 feet" with a superscript "a" to clarify footnote "a" is applicable.

(C) Row 3 contains two sub-columns within column 1 and three sub-rows within the second sub-columns of column 1 that continue through columns 2 and 3. The row is described below:

(i) Row 3, column 1, sub-column 1 is entitled "Projections.

(ii) Row 3, sub-row 1, column 1, sub-column 2, is entitled "Not allowed" and has been deleted from the table along with the remaining content in columns 2 and 3.

(iii) Row 3, sub-row 2, column 1, sub-column 2, is entitled "Fire-resistance rated."

(iv) Row 3, sub-row 2, column 2, contains the wording "1 hour on the underside, or heavy timber, or fire-retardant-treated wood" with a superscript "b, c" at the end to indicate footnotes "b" and "c" are applicable.

(v) Row 3, sub-row 2, column 3, contains the wording "2 feet" with a superscript "a" to indicated footnote "a" is applicable.

(vi) Row 3, sub-row 3, column 1, sub-column 3 is entitled "Not fire-resistance rated."

(vii) Row 3, sub-row 3, column 2, contains the wording "0 hours."

(viii) Row 3, sub-row 3, column 3, contains the wording "3 feet."

(D) Row 4 contains two sub-columns within column 1 and two sub-rows within the second sub-column of column 1 that continue through columns 2 and 3. The row is described below:

(i) Row 4, column 1, sub-column 1 is entitled "Openings in walls."

(ii) Row 4, sub-row 1, column 1, sub-column 2 is entitled "Not allowed."

(iii) Row 4, sub-row 1, column 2, contains the wording "NA."

(iv) Row 4, sub-row 1, column 3, contains the wording "less than 3 feet."

(v) Row 4, sub-row 2, column 1, sub-column 2 is entitled "Unlimited."

(vi) Row 4, sub-row 2, column 2, contains the wording "0 hours."

(vii) Row 4, sub-row 2, column 3, contains the wording "3 feet" with a superscript "a" to indicate footnote "a" is applicable.

(E) Row 5 contains two sub-columns within column 1 and two sub-rows within columns 2 and 3. The row is described below:

(i) Row 5, column 1, sub-column 1 is entitled "Penetrations."

(ii) Row 5, column 1, sub-column 2 is entitled "All."

(iii) Row 5, sub-row 1 column 2, contains the wording "Comply with Section R302.4."

(iv) Row 5, sub-row 1 column 3, contains the wording "less than 3 feet."

(v) Row 5, sub-row 2 column 2, contains the wording "None required."

(vi) Row 5, sub-row 2 column 3, contains the wording "3 feet" with a superscript "a" to indicate footnote "a" is applicable.

(F) Under the table the following wording is listed "For SI: 1 foot equals 304.8 mm" and "NA equals Not Applicable."

(G) Footnote "a" reads: "For a residential subdivision where all dwellings are equipped throughout with an automatic sprinkler system installed in accordance with Section P2904, the fire separation distance for exterior walls not fire-resistance rated and for fire- resistance rated projections shall be permitted to be reduced to 0 feet, and unlimited unprotected openings and penetrations shall be permitted, where the adjoining lot provides an open setback yard that is 6 feet or more in width on the opposite side of the property line."

(H) Footnote "b" reads: "The fire-resistance rating shall be permitted to be reduced to 0 hours on the underside of the eave overhang if fireblocking is provided from the wall top plate to the underside of the roof sheathing."

(I) Footnote "c" reads: "The fire-resistance rating shall be permitted to be reduced to 0 hours on the underside of the rake overhang where gable vent openings are not installed."

(4) Section R303.4 Mechanical ventilation. This section has been modified to add language to allow for visual confirmation. This section has been modified to read: R303.4 Mechanical ventilation. Where the air infiltration rate of a dwelling is 5 air changes per hour or less where tested with a blower door at a pressure of 0.2 inch w.c. (50 Pa) or confirmed through visual testing in accordance with Section N1102.4.1.2, the dwelling unit shall be provided with whole-house mechanical ventilation in accordance with Section M1505.4.

(5) Section R311.1 Means of egress. This section has been modified to specify the section requirements apply to garages as well as dwellings, while allowing the means of egress from the garage to go through an adjacent dwelling. This section has been modified to read: R311.1 Means of egress. Dwellings or garages (attached or detached from the dwelling) shall be provided with a means of egress in accordance with this section. The means of egress shall provide a continuous and unobstructed path of vertical and horizontal egress travel from all portions of the dwelling to the required egress door without traveling through a garage. The means of egress from the garage may travel through the adjacent dwelling. The required egress door shall open directly into a public way or to a yard or court that opens to a public way.

(6) Section R311.2 Egress door. This section has been modified to specify the section requirements apply to garages, as well as dwellings. This section has been modified to read: R311.2 Egress door. Not less than one egress door shall be provided for each dwelling unit or garage. The egress door shall be side-hinged and shall provide a clear width of not less than 32 inches (813 mm) where measured between the face of the door and the stop, with the door open 90 degrees (1.57 rad). The clear height of the door opening shall not be less than 78 inches (1981 mm) in height measured from the top of the threshold to the bottom of the stop. Other doors shall not be required to comply with these minimum dimensions. Egress doors shall be readily openable from the inside of the dwelling or garage without the use of a key or special knowledge or effort.

(7) Section R311.7.5.1 Risers. This section has been modified to add a third exception that allows the top and bottom riser height to vary by 3/4 inch (19 mm). This section has been modified to read: R311.7.5.1 Risers. The riser height shall be not more than 7 3/4 inches (196 mm). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Risers shall be vertical or sloped from the underside of the nosing of the tread above at an angle not more than 30 degrees (0.51 rad) from the vertical. At open risers, openings located more than 30 inches (762 mm), as measured vertically, to the floor or grade below shall not permit the passage of a 4-inch-diameter (102 mm) sphere. Exceptions:

(A) Exception 1. The openings between adjacent treads is not limited on spiral stairways.

(B) Exception 2. The riser height of spiral stairways shall be in accordance with Section R311.7.10.1.

(C) Exception 3. The top and bottom riser in each flight of stairs may vary by 3/4 inch (19 mm).

(8) Section R313.2 One- and two-family dwellings automatic fire sprinkler systems. This section, including the exception, has been moved to the newly created Appendix U, entitled "Appendix U, Automatic Fire Systems" and is not adopted as a part of the statewide minimum code for residential construction within the State of Oklahoma. This section has been renumbered in Appendix U to become U101.1. The section number R313.2 itself, will stay as part of this code for numbering alignment but will not have any requirements attached to it.

(9) Section R313.2.1 Design and installation. This section has been moved to the newly created Appendix U, entitled "Appendix U, Automatic Fire Systems" and is not adopted as a part of the statewide minimum code for residential construction within the State of Oklahoma. This section has been renumbered in Appendix U to become U101.2. The section number R313.2.1 itself, will stay as part of this code for numbering alignment but will not have any requirements attached to it.

(10) Section R323.1 General. This section has been modified to include above and below ground storm shelters and to limit the use of the term storm shelter. This section has been modified to read: R323.1 General. This section applies to the construction of above or below ground storm shelters constructed as separate detached buildings, rooms within buildings, structures, or portions thereof for the purpose of providing safe refuge from storms that produce high winds, such as tornados and hurricanes. Any room or structure, as may be used as a place of refuge during a severe wind storm event, shall not be defined as a storm shelter unless specifically designed to the requirements listed in Section R323.

(11) Section R323.2 Required. This section has been added to stipulate in addition to other applicable requirements in this code, storm shelters shall be constructed in accordance with ICC 500® except as required by Sections R323.2.1 through R323.2.4 This section has been added to read: R323.2 Required. In addition to other applicable requirements in this code, storm shelters shall be constructed in accordance with ICC 500® except as required by Sections R323.2.1 through R323.2.4.

(12) Section R323.2.1 Design wind speed. This section has been added to modify the requirements of ICC 500® Section 304.2 to clarify the minimum design wind speed for all storm shelters in the State of Oklahoma shall be set at 250 miles per hour. This section has been added to read: R323.2.1 Design wind speed. For storm shelters, the minimum design wind speed for the entire State of Oklahoma shall be 250 miles per hour.

(13) Section R323.2.2 In-ground storm shelters. This section has been added to clarify for all in-ground storm shelters installed in garages, the rim of the shelter shall be raised a minimum of 1 inch (25 mm) above the highest point of the adjacent garage floor to resist surface drainage and to require the floor around the shelter to slope at a maximum slope of 1:8. This section has been added to read: R323.2.2 In-ground storm shelters. When installed in the floor of a garage, the rim of the storm shelter shall be raised a minimum of 1 inch (25 mm) above the highest point of the adjacent garage floor to resist surface drainage into the shelter. The floor around the shelter shall slope at a maximum slope of 1:8.

(14) Section R323.2.3 Height of storm shelter. This section has been added to clarify how to determine the location of the natural ventilation openings in storm shelters in accordance with ICC 500® Section 702.1.1.1, by providing a definition for the height of a storm shelter to be calculated by taking the average of the vertical dimensions from the floor elevation to the bottom of the storm shelter deck or to the underside of a hard ceiling within the storm shelter. This section has been added to read: R323.2.3 Height of storm shelter. When determining the location of natural ventilation in accordance with ICC 500® Section 702.1.1.1, the height of the storm shelter shall be defined as an average of the vertical dimensions from the floor elevation to the bottom of the storm shelter deck or to the underside of a hard ceiling within the storm shelter.

(15) Section R323.2.4 Occupant density. This section has been added to modify the requirements of ICC 500® Section 501.1.1 to clarify residential storm shelters may exceed the occupant density requirements in ICC 500® Table 502.4 and not be required to conform to the requirements of a community shelter. This section has been added to read: R323.2.4 Occupant density. Residential storm shelters located in or adjacent to one-and two-family dwellings may exceed the occupant density in ICC 500® Table 502.4 and shall not be required to conform to the requirements of a community shelter.

(16) Section R326.1 General. This section has been modified to remove the requirement for the construction of swimming pools, spas, and hot tubs to comply with the International Swimming Pool and Spa Code® to the newly created Appendix V, entitled "Appendix V, Swimming Pools, Spas and Hot Tubs," and has been renumbered in Appendix V to become V101.1. This section number R326.1 itself, has the same title with new language added to require new swimming pools, spas and hot tubs requiring a permit to comply with Sections R326.2 through R326.4. This section has been modified to read: R326.1 General. Residential swimming pools, spas, and hot tubs requiring a permit shall comply with Sections R326.2 through R326.4.

(17) Section R326.2 Enclosure. This section has been added to provide enclosure requirements for residential swimming pools, spas, and hot tubs. This section has been added to read: R326.2 Enclosure. Swimming pools shall be completely enclosed by a fence or barrier not less than 4 feet (1219 mm) in height or a screen enclosure. Openings in the fence or barrier shall not permit the passage of a 4-inch-diameter (102 mm) sphere. Exceptions:

(A) Exception 1. Swimming pools, spas and hot tubs on lots in excess of 2 acres are exempt from the requirements.

(B) Exception 2. A swimming pool with a power safety cover or a spa with a safety cover complying with ASTM F 1346 need not comply with this section.

(18) Section R326.3 Gates. This section has been added to provide gate requirements for residential swimming pools, spas and hot tubs. This section has been added to read: R326.3 Gates. Exterior pedestrian access doors or gates shall be self-closing and have a self-latching device. Doors or gates other than pedestrian access doors or gates shall have a self-latching device. Where the release mechanism of the self-latching device is located less than 54 inches (1372 mm) from the bottom of the door or gate, the release mechanism shall be located on the pool side of the door or gate, 3 inches (76 mm) or more below the top of the door or gate, and the door or gate and barrier shall be without openings greater than 1/2 inch (12.7 mm) within 18 inches (457 mm) of the release mechanism. Exception: Gates equipped with a locking device.

(19) Section R326.4 Suction outlet fitting assemblies. This section has been added to clarify all suction outlet fitting assemblies shall be listed and labeled in compliance with ANSI/APSP/ICC 16. This section has been added to read: R326.4 Suction outlet fitting assemblies. Suction outlet fitting assemblies shall be listed and labeled in compliance with ANSI/APSP/ICC 16.

(20) R326.5 Entrapment avoidance. This section has been modified to require suction entrapment avoidance for pools and spas to comply with ANSI/APSP/ICC 7 and provide an exception for portable spas and portable exercise pools listed in accordance with UL 1563 or CSA C22.2 No 218.1. This section has been modified to read: R326.5 Entrapment avoidance. Suction entrapment avoidance for pools and spas shall be provided in accordance with ANSI/APSP/ICC 7. Exception: Portable spas and portable exercise pools listed in accordance with UL 1563 or CSA C22.2 No 281.1.

(21) Section R327.3 Installation. This section has been modified to change the wording "stationary storage battery systems" to "ESS (Energy Storage Systems) and delete the requirement prohibiting them from being installed within the habitable space. This section has been modified to read: R327.3 Installation. ESS (Energy Storage Systems) shall be installed in accordance with the manufacturer's instructions and their listing, if applicable.

(22) Section R327.3.1 Locations. This section has been added to specify the locations where an ESS (Energy Storage Systems) may be installed. This section has been added to read: R327.3.1 Locations.

(A) ESS (Energy Storage Systems) shall be installed only in the following locations:

(i) Item 1. Detached garages and detached accessory structures.

(ii) Item 2. Attached garages separated from the dwelling unit living space in accordance with Section R302.6.

(iii) Item. 3. Outdoors or on the exterior side of exterior walls located not less than 3 feet (914 mm) from doors and windows directly entering the dwelling unit.

(iv) Item 4. Enclosed utility closets, basements, storage or utility spaces within dwelling units with finished or noncombustible walls and ceilings. Walls and ceilings of unfinished wood-framed construction shall be provided with not less than 5/8-inch (15.9 mm) Type X gypsum wallboard.

(B) ESS shall not be installed in sleeping rooms, or closets or spaces opening directly into sleeping rooms.

Okla. Admin. Code § 748:20-6-8

Amended and renumbered from 748:20-5-6 by Oklahoma Register, Volume 39, Issue 24, September 1, 2022, eff. 9/14/2022