Cross References — As to fire prevention code, see ch. 205; as to swimming pools, see ch. 515; as to stormwater and erosion control, see ch. 425.
Editor's Note — Ord. no. 3718 §1, adopted January 22, 2007, repealed ch. 500 and enacted new provisions set out herein. Former ch. 500 derived from CC 1988 §§6-1 — 6-3, 6 — 7, 20-1 — 20-2; ord. no. 3025 §§1 — 3, 2-17-1990; ord. no. 3300 §1, 3-17-1997; ord. no. 3302 §1, 3-17-1997; ord. no. 3520 §1, 3-17-2003; ord. no. 3522 §1, 3-17-2003.
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 4524, 1-29-2019[1]; Ord. No. 5041, 4-21-2025]
A. 
International Building Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Building Code, 2021 Edition" as published by the International Code Council is hereby adopted as the Building Code of the City of De Soto, Missouri, regulating and governing the conditions and maintenance of all property, buildings and structures; by providing the standards for supplied utilities and facilities and other physical things and conditions essential to ensure that structures are safe, sanitary and fit for occupation and use; and the condemnation of buildings and structures unfit for human occupancy and use and the demolition of such structures as herein provided; providing for the issuance of permits and collection of fees therefore; and each and all of the regulations, provisions, penalties, conditions and terms of said Building Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereof, as if fully set out in this Article.
B. 
Existing Building Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Existing Building Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the Existing Building Code of the City of De Soto, Missouri, regulating and governing the repair, alteration, change of occupancy, addition, and relocation of existing buildings, including historic buildings, as herein provided; and each and all of the regulations, provisions, conditions and terms of said Existing Building Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereof, as if fully set out in this Article.
C. 
Residential Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Residential Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the Residential Code of the City of De Soto, Missouri, regulating and governing the construction, alteration, movement, enlargement, replacement, repair, equipment, location, removal and demolition of detached one- and two-family dwellings and multiple single-family dwellings (town houses) not more than three (3) stories in height with separate means of egress as herein provided; and each and all of the regulations, provisions, conditions and terms of said Residential Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereto, as if fully set out in this Article.
D. 
Mechanical Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Mechanical Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the Mechanical Code of the City of De Soto, Missouri, regulating and governing the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of mechanical systems as herein provided; and each and all of the regulations, provisions, conditions and terms of said Mechanical Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereto, as if fully set out in this Article.
E. 
Plumbing Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Plumbing Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the Plumbing Code of the City of De Soto, Missouri, regulating and governing the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of plumbing systems as herein provided; and each and all of the regulations, provisions, conditions and terms of said Plumbing Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereto, as if fully set out in this Article.
F. 
Energy Conservation Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Energy Conservation Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the International Energy Conservation Code of the City of De Soto, Missouri, regulating and governing efficient building envelopes and installation of energy efficient mechanical, lighting and power systems as herein provided; and each and all of the regulations, provisions, conditions and terms of said Energy Conservation Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereof, as if fully set out in this Article.
G. 
Fuel Gas Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Fuel Gas Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the Fuel Gas Code of the City of De Soto, Missouri, regulating and governing fuel gas systems and gas-fired appliances as herein provided; and each and all of the regulations, provisions, conditions and terms of said Fuel Gas Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereof, as if fully set out in this Article.
H. 
Swimming Pool And Spa Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Swimming Pool and Spa Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the Swimming Pool and Spa Code of the City of De Soto, Missouri, regulating and governing the construction, alteration, movement, renovation, replacement, repair and maintenance of aquatic recreation facilities, pools and spas as herein provided; and each and all of the regulations, provisions, conditions and terms of said Swimming Pool and Spa Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereof, as if fully set out in this Article.
I. 
Property Maintenance Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "International Property Maintenance Code, 2021 Edition," as published by the International Code Council, is hereby adopted as the Property Maintenance Code of the City of De Soto, Missouri, regulating and governing the maintenance of existing buildings; and each and all of the regulations, provisions, penalties, conditions and terms of said International Property Maintenance Code on file in the office of the City of De Soto are hereby referred to, adopted and made a part hereof, as if fully set out in this Article.
J. 
Electrical Code. A certain code, one (1) copy of which is on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "National Electrical Code, 2020 Edition," as published by the National Fire Protection Association, is hereby adopted as the Electrical Code of the City of De Soto, Missouri, to provide for the regulation and control of design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of electrical systems in the City of De Soto; and each and all of the regulations, provisions, conditions and terms of said National Electrical Code, and the referenced standards mentioned therein are hereby referred to, adopted and made a part hereof, as if fully set out in this Article.
[1]
Editor's Note: Ord. No. 4523 also changed the title of this Section and Article I to include the Property Maintenance Code.
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3719 §1, 2-21-2007; Ord. No. 3768 §1, 5-19-2008; Ord. No. 3887 §1, 5-16-2011; Ord. No. 4139, 11-19-2018; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Building Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection 101.1 by inserting, "City of De Soto, Missouri."
2. 
Amend Subsection 101.2.1 by deleting the text and inserting, "Appendix H Signs is hereby adopted."
3. 
Amend Subsection 101.4.3 Plumbing by deleting, "International Private Sewage Disposal Code" and inserting, "Jefferson County On-Site Sewage Treatment Code" where it appears in this Section and any additional location within the International Building Code.
4. 
Amend Subsection 103.1 by inserting, "Building Department."
5. 
Amend Subsection 103.2 by deleting the text and inserting, "The Building Official, under the code, shall be the City Manager or the duly authorized representative of the City Manager."
6. 
Amend Subsection 105.1 by adding to the end of the paragraph, "A copy of the real estate tax bill, from the prior year, must be accompanied with the building permit application."
7. 
Amend Subsection 107.2.6 by adding to the end of the paragraph, "The owner must have the corners of the property marked as well as the proposed building staked as to the position on the lot prior to issuance of a building permit."
8. 
Amend Subsection 109.2. by inserting the following, Fee Schedule.
A. 
Residential And Commercial New Construction. The permit fee shall be forty-three cents ($0.43) per square foot from April 1, 2024 through March 31, 2025. Thereafter, the fee will increase three percent (3%) annually on April 1st.
B. 
Remodeling Permit. The permit fee shall be twenty-four cents ($0.24) per square foot from April 1, 2024 through March 31, 2025. Thereafter, the fee will increase three percent (3%) annually on April 1st.
C. 
All other permits, or in the case where an area cannot be determined or is impractical to be determined. The non-refundable permit fee shall be fifty dollars ($50.00).
D. 
Payment. All permit fees shall be paid prior to construction.
E. 
Re-Inspections. Permit fees will cover up to ten (10) inspections. After ten (10) inspections a fee of thirty dollars ($30.00) will be charged for each inspection. This Section does not apply to commercial inspections.
F. 
Property Maintenance/Occupancy Inspections. The permit fee for property maintenance/occupancy inspections shall be thirty dollars ($30.00). This permit fee will cover up to one (1) inspection and two (2) re-inspections. All additional property maintenance/occupancy re-inspections require the payment of an additional fee of thirty dollars ($30.00) to be paid prior to the time of re-inspection.
9. 
Amend Section 113 by deleting the Section in its entirety and inserting, "Section 113. Means Of Appeals. Section 113. Application For Appeal. International Building Code, International Existing Building Code, International Residential Code, International Mechanical Code, International Plumbing Code, International Energy Conservation Code, International Fuel Gas Code, International Swimming Pool and Spa Code, International Property Maintenance Code and National Electrical Code.
A. 
Application. Any person aggrieved by a decision of the Code Official shall have the right to appeal that decision to the Board of Adjustment established in Section 405.410, De Soto Code. An application for appeal shall be based on a claim that the true intent of the International Building Code, International Existing Building Code, International Residential Code, International Mechanical Code, International Plumbing Code, International Energy Conservation Code, International Fuel Gas Code, International Swimming Pool and Spa Code, the National Electrical Code or the International Property Maintenance Code, or the rules legally adopted thereunder, have been incorrectly interpreted, the provisions of this code do not fully apply, or that the Code Official agrees that an equally good or better method of construction is used. The application shall be filed on a form obtained from the Code Official within thirty (30) days after the notice was served or the decision made by filing the application with the Code Official and with the Board of Adjustment. The Code Official shall forthwith transmit to the Board of Adjustment all the papers constituting the record upon which the action appealed from is taken. The Board shall fix a reasonable time for hearing the appeal, provide reasonable notice to the parties and decide the same within a reasonable time. Meetings of the Board of Adjustment shall be held in compliance with Section 405.410, De Soto Code.
B. 
Meetings — Procedure. Meetings of the Board of Adjustment shall be held in compliance with Section 405.410, De Soto Code.
C. 
Resolution. The decision of the Board shall be by resolution. Certified copies shall be furnished to the applicant and to the Code Official.
D. 
Board Decision.
1. 
The Board of Adjustment may modify or reverse the decision of the Code Official by the concurring vote of four (4) members of the Board of Adjustment. Otherwise, the decision will be affirmed.
2. 
The Code Official shall take immediate action in accordance with the decision of the Board of Adjustment.
E. 
Court Review. Appeals to the Circuit Court by any person aggrieved by a decision of the Board of Adjustment shall be made in the manner and time required by law following the issuance of the decision by the Board of Adjustment.
F. 
Penalty For Violations. (International Building Code, International Existing Building Code, International Residential Code, International Mechanical Code, International Plumbing Code, International Energy Conservation Code, International Fuel Gas Code, International Swimming Pool and Spa Code, National Electrical Code and International Property Maintenance Code). Any person, firm or corporation who shall violate any of the provisions of this Chapter or the codes herein adopted, or who shall fail to comply with any of the requirements thereof, or who shall fail to comply with any order issued pursuant to any Section thereof shall be guilty of a misdemeanor, and upon conviction, shall be punished by a fine not exceeding five hundred dollars ($500.00), or by imprisonment for a period not to exceed three (3) months, or by both such fine and imprisonment, and court costs for each such offense. Each day a violation exists or continues to exist shall be deemed a separate offense."
10. 
Amend Subsection 1612.3 by deleting the text and inserting "Flood hazard areas shall be established as stated within Chapter 420 of the City of De Soto Code of Ordinances."
11. 
Amend Subsection 1807.2.1 by deleting the text and inserting, "Retaining walls over six (6) feet shall be designed by an engineer to ensure stability against overturning, sliding, excess foundation pressure and water uplift. Retaining walls shall be designed for a safety factor of 1.5 against lateral sliding and overturning.
Exception: Poured concrete and wood crafted retaining walls not exceeding six (6) feet in height shall not require engineering but shall meet all other design requirements. Pre-manufactured block retaining system of a modular nature shall follow manufacturer's specifications. Modular retaining wall systems over six (6) feet in height shall require engineered design supervision. Retaining walls of wood construction shall be preservative treated in accordance with Chapter 23 of the International Building Code."
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Existing Building Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection 101.1 by inserting, "City of De Soto, Missouri."
2. 
Amend Subsection 103.1 by inserting, "Building Department."
3. 
Amend Subsection 103.2 by deleting the text in its entirety and inserting, "The Building Official, under the Code, shall be the City Manager or the duly authorized representative of the City Manager."
4. 
Amend Subsection 105.1 by adding the following to the end of the paragraph, "A copy of the real estate tax bill, for the prior year, must be accompanied with the building permit application."
5. 
Amend Subsection 108.2 by deleting the text in its entirety and inserting, "See "Fee Schedule" as provided in Section 500.020 of the City's Code of Ordinances."
6. 
Amend Section 112 by deleting the Section in its entirety and inserting, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
7. 
Amend Subsection 113.4 by deleting the text in its entirety and inserting, "See "Violation Penalties" as provided in Section 500.020 of the City's Code of Ordinances."
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 4048 §1, 9-21-2015; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Residential Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection R101.1 by inserting, "City of De Soto, Missouri."
2. 
Amend Subsection R103.2 by deleting the text in its entirety and inserting, "The Building Official, under the code, shall be the City Manager or the duly authorized representative of the City Manager."
3. 
Amend Subsection R104.10.1 by deleting the text in its entirety and inserting, "The Building Official shall not issue a permit for work on a structure located in a flood hazard area until compliance with City Code Article IV Section 420.120 has been obtained."
4. 
Amend Subsection 105.1 by adding to the end of the paragraph, "A copy of the real estate tax bill, from the prior year, must be accompanied with the building permit application."
5. 
Amend Subsection R105.2 by deleting, "Work Exempt from permit," listed under Building: #1, #2, #4, #5, #10.
6. 
Amend Subsection R106.1 by deleting it in its entirety and inserting: "Where the Building Official issues a permit, the construction documents shall be approved in writing or by a stamp that states "REVIEWED FOR CODE COMPLIANCE." One (1) set of construction documents so reviewed shall be retained by the Building Official. The other set shall be returned to the applicant, may be kept at the site of work or made available at the time of inspection and shall be open to inspection by the Building Official or a duly authorized representative."
7. 
Amend Subsection R108.6 by adding the following, "Exception: 1. Earthwork. 2. Stakeouts and other necessary planning procedures."
8. 
Amend Subsection R110.3 by deleting, #8 reference to fire sprinkler system.
9. 
Amend Section R112 by replacing entire Section with: "See Means of Appeal as provided in Section 500.020 of the City Code."
10. 
Amend Section R113 by deleting the Section in its entirety and inserting, "See Penalty for Violations as provided in Section 500.020 of the City Code."
11. 
Amend Table R301.2 by inserting the following information:
Ground Snow Load
20
Wind Design Speed
108
Wind Design Topographic Effects
No
Special Wind Region
No
Windborne Debris Zone
No
Seismic Design Category
C
Weathering
Severe
Frost Line Depth
30 inches
Termite
Yes
Ice Barrier Underlayment Required
No
Flood Hazards
See City Code Section 420.040
Air Freezing Index
766
Mean Annual Temp
55
12. 
Amend Table R301.2 by deleting the following: Manual J Criteria.
13. 
Amend Subsection R302.1 by adding the following under exceptions, "6. Cantilevered manufactured fireplaces," "7. Roof eave overhangs," and "8. Uncovered decks."
14. 
Amend Subsection R302.5.1 by deleting the last sentence and inserting, "Doors shall be self-latching."
15. 
Delete Subsection 302.13 in its entirety without replacement.
16. 
Amend Subsection R303.3 by inserting the following to the last sentence of the exception, "a ventilated soffit, or a gable end vent, with an approved termination cap."
17. 
Amend Subsection R303.5.2 by deleting the text in its entirety and inserting, "Exhaust air shall not be directed below eighty (80) inches onto a walkway."
18. 
Amend Subsection R309.1 by adding the following to the end of the text, "Where garage floors are located on the same level as the basement floor the garage floor shall be a minimum of four (4) inches below the adjacent basement floor."
19. 
Add Subsection R3091.1 "Garage Floor Construction. Floors in both attached and detached garages shall be a minimum thickness of four (4) inch concrete with one-half (1/2) inch rebar installed two (2) feet on center each way or six (6) inch by six (6) inch ten (10) gauge welded wire mesh."
20. 
Add Subsection R309.2.1 "Carport Floor Construction. Floors in carports shall be a minimum thickness of four (4) inch concrete with one-half (1/2) inch rebar installed two (2) feet on center each way or six (6) inch by six (6) inch ten (10) gauge welded wire mesh."
21. 
Add Subsection R309.2.2 "Pavilions. Pavilions structures shall be open on no less than two (2) sides. If motorized equipment (vehicle, lawnmower, etc.) are stored within the structure, the structure shall than be classified a carport and shall comply with the requirements for a carport found in R390.2 and R309.2.1 of this code."
22. 
Amend Subsection R309.5 to add the following, "Exception: An automatic sprinkler system may be installed in a garage if the owner elects to the installation of such system as per Missouri State Law."
23. 
Add Subsection R309.6 "Pre-manufactured accessory structures anchoring system. Accessory structures must be anchored into the ground to sufficiently withstand the windspeed specified in Table 301.2. There are three (3) types of acceptable anchoring systems other than a full foundation with frost protection footing.
a. 
Slab. A minimum of four (4) inch concrete with a four (4) inch subgrade of suitably compacted materials one-half (1/2) inch anchor bolts placed six (6) feet on center with a minimum three (3) inch embedment in to the concrete.
b. 
Auger Tie Down. Similar to manufactured home tie downs with a minimum of two (2) per side — max spacing ten (10) feet on center. Shall be installed per the manufacture's requirements and/or installation guide.
c. 
Piers. Sheds built on 4x4 skids may be anchored into concrete piers shall be 8"x8"x30" deep and shall be spaced a maximum eight (8) feet on center. Piers shall be located directly under the structure floor frame of the shed."
24. 
Add Subsection 309.7 "Location. Accessory structures including but not limited to pre-manufactured structures shall be located in accordance with the City of De Soto Zoning Regulations."
25. 
Add Subsection R311.4.1 "Interior Doors. Interior passage doors shall have a minimum width of thirty (30) inches.
Exception: Doors serving bathrooms may be twenty-eight (28) inches in width."
26. 
Amend Subsection R313.1 by deleting the text in its entirety and inserting, "An automatic sprinkler system may be installed in townhouses if the owner elects to the installation of such system as per Missouri State Law. Builders of townhouses shall comply with the requirements of Missouri State Law regarding the "mandatory option" on the installation of automatic fire sprinklers."
27. 
Amend Subsection R313.2 by deleting the text in its entirety and inserting, "An automatic sprinkler system may be installed in one- and two-family dwellings if the owner elects to the installation of such system as per Missouri State Law. Builders of one- and two-family dwellings shall comply with the requirements of Missouri State Law regarding the "mandatory option" on the installation of automatic fire sprinklers."
28. 
Amend Subsection R323.1 by adding the following text to the end, "except when located below grade or if basement walls are fully constructed with concrete."
29. 
Amend Subsection R403.1.7 by adding the following text to the end: "or plans as signed and sealed by a registered engineer/design professional licensed in the State of Missouri."
30. 
Amend Subsection R506.2.31 by deleting the first sentence and inserting: "A minimum six (6) mil (0.006 inch; 0.152 mm) vapor retarder conforming to ASTM E1745 Class A requirements with joints lapped not less than six (6) inches (152 mm) shall be placed between the concrete floor slab and the base course or the prepared subgrade where a base course does not exist."
31. 
Amend Subsection R905.2.8.2 by deleting item three (3) text and inserting the following: "For closed valleys (valley covered with shingles), valley lining of two (2) plies of No. 15 felt complying with ASTM D226 Type I, ASTM D4869 Type I, or ASTM D6757, or valley lining as described in Item 1 and 2 shall be permitted. Self-adhering polymer modified bitumen underlayment complying with ASTM D1970 shall be permitted in lieu of the lining material."
32. 
Amend Subsection R905.2.8.5 by inserting the following text: "Exception: Unless the drip edge is specifically required by the manufacturer's installation instructions, metal wrapped fascia extending one (1) inch under the roof covering with the underlayment installed over it shall be deemed to meet the requirements of this Section."
33. 
Amend Subsection R1005.7 by inserting the following text: "Exception: When chimneys are installed per the manufacture's installation instructions."
34. 
Amend Subsection R1006.1.1 by deleting the text in its entirety and inserting, "Exterior combustion air ducts for factory-built fireplaces shall be a listed component of the fireplace or approved equivalent and shall be installed according to the fireplace manufacturer's instructions."
35. 
Amend Subsection N1101.5 (R103.2) by deleting the text in its entirety and inserting, "Construction documents shall be drawn to scale on suitable material. Electronic media documents are permitted to be submitted when approved by the Code Official. Construction documents and supporting secondary documentation shall be of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include the following as applicable:
1. 
Energy compliance path.
2. 
Insulation materials and their R-values.
3. 
Fenestration, U-factors and solar heat gain coefficients (SHGC).
4. 
Area-weighted U-factor and solar heat gain coefficient (SHGC) calculations.
5. 
Mechanical system design criteria.
6. 
Mechanical and service water heating systems and equipment types, sizes and efficiencies.
7. 
Equipment and system controls.
8. 
Duct sealing, duct and pipe insulation and location.
9. 
Air sealing details.
36. 
Amend Subsection N1101.13 (R401.2) by deleting the text in its entirety and inserting, "Residential buildings shall comply with Section N1101.13.1, N1101.13.2, N1101.13.3 or N1101.13.4."
37. 
Delete Subsection N1101.13.5 (R401.2.5) in its entirety without replacement.
38. 
Delete Subsection N1101.14 (R401.3) in its entirety without replacement.
39. 
Amend Table N1102.1.3 (R402.1.3) by the following deletions and additions:
Table N1102.1.3 (R402.1.3)
Insulation Minimum R-Values and Fenestration Requirements by Componenta
Climate Zone
Fenestration U-Factorb, i
Skylightb U-Factor
Glazed Fenestration SHGCb, c
Ceiling R-Value
Wood Frame Wall R-Valueg
Mass Wall R-Valueh
Floor R-Value
Basementc, g Wall R-Value
Slabd R-Value & Depth
Crawl Spacec, g Wall R-Value
0
NR
0.75
0.25
30
13 or 0 + 10
3/4
13
0
0
0
1
NR
0.75
0.25
30
13 or 0 + 10
3/4
13
0
0
0
2
0.40
0.65
0.25
49
13 or 0 + 10
4/6
13
0
0
0
3
0.30
0.55
0.25
49
20 or 13 + 5ci or 0 + 15
8/13
19
5ci or 13f
10ci, 2 ft
5ci or 13f
4 except Marine
0.40
0.55
NR
38
13
8/13
19
0
10ci, 4 ft
10ci or 13
5 and Marine 4
0.30
0.55
0.40
60
20 + 5 or 13 + 10ci or 0 + 15
13/17
30
15ci or 19 or 13 + 5ci
10ci, 4 ft
15ci or 19 or 13 + 5ci
6
0.30
0.55
NR
60
20 + 5ci or 13 + 10ci or 0 + 20
15/20
30
15ci or 19 or 13 + 5ci
10ci, 4 ft
15ci or 19 or 13 + 5ci
7 and 8
0.30
0.55
NR
60
20 + 5ci or 13 + 10ci or 0 + 20
19/21
38
15ci or 19 or 13 + 5ci
10ci, 4 ft
15ci or 19 or 13 + 5ci
For SI: 1 foot = 304.8 mm.
NR = Not Required.
ci = continuous insulation.
a.
R-values are minimums. U-factors and SHGC are maximums. Where insulation is installed in a cavity that is less than the label or design thickness of the insulation, the installed R-value of the insulation shall be not less than the R-value specified in the table.
b.
The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration. Exception: In Climate Zones 0 through 3, skylights shall be permitted to be excluded from glazed fenestration SHGC requirements provided that the SHGC for such skylights does not exceed 0.30.
c.
"5ci or 13" means R-5 continuous insulation (ci) on the interior or exterior surface of the wall or R-13 cavity insulation on the interior side of the wall. "10ci or 13" means R-10 continuous insulation (ci) on the interior or exterior surface of the wall or R-13 cavity insulation on the interior side of the wall. "15ci or 19 or 13 + 5ci" means R-15 continuous insulation (ci) on the interior or exterior surface of the wall; or R-19 cavity insulation on the interior side of the wall; or R-13 cavity insulation on the interior of the wall in addition to R-5 continuous insulation on the interior or exterior surface of the wall.
d.
R-5 insulation shall be provided under the full slab area of a heated slab in addition to the required slab edge insulation R-value for slabs, as indicated in the table. The slab edge insulation for heated slabs shall not be required to extend below the slab.
e.
There are no SHGC requirements in the Marine Zone.
f.
Basement wall insulation shall not be required in Warm Humid locations as defined by Figure N1101.7 and Table N1101.7.
g.
The first value is cavity insulation; the second value is continuous insulation. Therefore, as an example, "13 + 5" means R-13 cavity insulation plus R-5 continuous insulation.
h.
Mass walls shall be in accordance with Section N1102.2.5. The second R-value applies where more than half of the insulation is on the interior of the mass wall.
i.
A maximum U-factor of 0.32 shall apply in Climate Zones 3 through 8 to vertical fenestration products installed in buildings located either:
1. Above four thousand (4,000) feet in elevation; or
2. In windborne debris regions where protection of openings is required by Section R301.2.1.2.
40. 
Amend Subsection N1102.1.4 (R402.1.4) by deleting the text in its entirety and inserting, "Cavity insulation alone shall be used to determine compliance with the cavity insulation R-value requirements in Table N1102.1.3. Where cavity insulation is installed in multiple layers, the R-values of the cavity insulation layers shall be summed to determine compliance with the cavity insulation R-value requirements. The manufacturer's settled R-value shall be used for blown-in insulation. Continuous insulation (ci) alone shall be used to determine compliance with the continuous insulation R-value requirements in Table N1102.1.3. Where continuous insulation is installed in multiple layers, the R-values of the continuous insulation layers shall be summed to determine compliance with the continuous insulation R-value requirements. Cavity insulation R-values shall not be used to determine compliance with the continuous insulation R-value requirements in Table N1102.1.3. Computed R- may include an R-value for other building materials or air films. Where insulated siding is used for the purpose of complying with the continuous insulation requirements of Table N1102.1.3, the manufacturer's labeled R-Value for insulated siding shall be reduced by R-0.6."
41. 
Amend Subsection N1102.1.5 (R402.1.5) by deleting the text in its entirety and inserting, "Where the total building thermal envelope UA, the sum of U-factor times assembly area, is less than or equal to the Total UA resulting from multiplying the U-factors in Table N1102.1.2 by the same assembly area as in the proposed building, the building shall be considered to be in compliance with Table N1102.1.2. The UA calculation shall be performed using a method consistent with the ASHRAE Handbook of Fundamentals and shall include the thermal bridging effects of framing materials. In addition to UA compliance, the SHGC requirements of Table N1102.1.2 and the maximum fenestration U-factors of Section N1102.5 shall be met.
Exception: Glazed fenestration SHGC. In Climate Zone 4, permanently shaded vertical fenestration shall be permitted to satisfy SHGC requirements. The projection factor of an overhang, eave, or permanently attached shading device shall be greater than or equal to the value listed in Table N1102.2.2.1 for the appropriate orientation. The minimum projection shall extend beyond each side of the glazing a minimum of twelve (12) inches. Each orientation shall be rounded to the nearest cardinal orientation (+/-45 degrees or 0.79 rad) for purposes of calculations and demonstrating compliance."
42. 
Add Table N1102.5 as follows:
Table N1102.1.5
Minimum Projection Factor Required by Orientation for SHGC Exception
Orientation
Projection Factor
North
>=0.40a
South
>=0.20
East
>=0.50
West
>=0.50
a.
For the north orientation, a vertical projection located on the west-edge of the fenestration with the equivalent of PF>=0.15 shall also satisfy the minimum projection factor requirement.
43. 
Amend Subsection N1102.2.4 (R402.2.4) by deleting the text in its entirety and inserting, "Access hatches and doors from conditioned to unconditioned spaces such as attics and crawl spaces shall be insulated to R-38.
Exceptions:
1.
Vertical doors providing access from conditioned spaces to unconditioned spaces that comply with the fenestration requirements of Table N1102.1.3 based on the applicable climate zone specified in Chapter 3.
2.
Horizontal pull-down, stair-type access hatches in ceiling assemblies that provide access from conditioned to unconditioned spaces in Climate Zones 0 through 4 shall not be required to comply with the insulation level of the surrounding surfaces provided that the hatch meets all of the following:
2.1
The average U-factor of the hatch shall be less than or equal to U-0.10 or have an average insulation R-value of R-10 or greater.
2.2.
Not less than seventy-five percent (75%) of the panel area shall have an insulation R-value of R-13 or greater.
2.3
The net area of the framed opening shall be less than or equal to 13.5 square feet (1.25 m2).
2.4
The perimeter of the hatch edge shall be weatherstripped.
The reduction shall not apply to the total UA alternative in Section N1102.1.5."
44. 
Amend Subsection N1102.4 (R402.4) by deleting the text in its entirety and inserting, "The building thermal envelope may be designed and constructed to limit air leakage in accordance with the requirements of Sections N1102.4.1 through N1102.4.5."
45. 
Amend Subsection N1102.4.1.2 (R402.4.1.2) by deleting the text in its entirety and inserting, "Any building or dwelling unit may be tested for air leakage. The maximum design air leakage rate for any building or dwelling unit under any compliance path shall not exceed 5.0 air changes per hour or 0.28 cubic feet per minute (CFM) per square foot [0.0079 m3/(s x m2)] of dwelling unit enclosure area. For any building or dwelling unit designed for 3.0 or less air changes per hour, testing shall be conducted in accordance with ANSI/RESNET/ICC 380, ASTM E779 or ASTM E1827 and reported at a pressure of 0.2 inch w.g. (50 Pascals). Where required by the Code Official, testing shall be conducted by an approved third party. A written report of the results of the test shall be signed by the party conducting the test and provided to the Code Official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope have been sealed.
Exception: For heated, attached private garages and heated, detached private garages accessory to one- and two-family dwelling and townhouses not more than three stories above grade plane in height, building envelope tightness and insulation installation shall be considered acceptable where the items in Table N1102.4.1.1, applicable to the method of construction, are field verified. Where required by the Code Official, an approved third party, independent from the installer shall inspect both the air barrier and insulation installation criteria. Heated, attached private garage space shall be thermally isolated from all other conditioned spaces in accordance with Sections N1102.2.12 and N1102.3.5, as applicable.
During testing:
1. 
Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weatherstripping or other infiltration control measures.
2. 
Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures.
3. 
Interior doors, where installed at the time of the test, shall be open.
4. 
Exterior or interior terminations for continuous ventilation systems shall be sealed.
5. 
Heating and cooling systems, where installed at the time of the test, shall be turned off.
6. 
Supply and return registers, where installed at the time of the test, shall be fully open."
46. 
Amend Subsection N1102.4.1.3 (R402.4.1.3) by deleting the text in its entirety and inserting, "Where complying with Section N1101.13.1. the building or dwelling unit shall have a design air leakage rate not exceeding 5.0 air changes per hour."
47. 
Amend Table N1102.4.1.1 (R402.4.1.1) with the following deletions:
Table N1102.4.1.1 (402.4.1.1)a
Air Barrier and Insulation Installation
Component
Air Barrier Criteria
Insulation Installation Criteria
General Requirements
A continuous air barrier shall be installed in the building envelope.
Breaks or joints in the air barrier shall be sealed.
Air-permeable insulation shall not be used as a sealing material.
Ceiling/attic
The air barrier in any dropped ceiling or soffit shall be aligned with the insulation and any gaps in the air barrier sealed.
Access openings, drop-down stairs or knee wall doors to unconditioned attic spaces shall be weatherstripped.
The insulation in any dropped ceiling/soffit shall be aligned with the air barrier.
Walls
The junction of the foundation and sill plate shall be sealed.
Cavities within corners and headers of frame walls shall be insulated by completely filling the cavity with a material having a thermal resistance, R-value, of not less than R-3 per inch.
Exterior thermal envelope insulation for framed walls shall be installed in substantial contact and continuous alignment with the air barrier.
Windows, skylights and doors
The space between framing and skylights, and the jambs of windows and doors, shall be sealed.
Rim joists
Rim joists shall include an exterior air barrier.b
Rim joists shall be insulated.b
Floors, including cantilevered floors and floors above garages
The air barrier shall be installed at any exposed edge of insulation.
Floor framing cavity insulation shall be installed to maintain permanent contact with the underside of subfloor decking. Alternatively, floor framing cavity insulation shall be in contact with the top side of sheathing, or continuous insulation installed on the underside of floor framing and extending from the bottom to the top of all perimeter floor framing members.
Basement crawl space, and slab foundations
Exposed earth in unvented crawl spaces shall be covered with Class 1 vapor retarder/air barrier in accordance with Section R402.2.10.
Penetrations through concrete foundation walls and slabs shall be air sealed.
Class 1 vapor retarders shall not be used as an air barrier on below-grade walls and shall be installed in accordance with Section R702.7.
Crawl space insultation, where provided instead of floor insulation, shall be installed in accordance with Section R402.2.10.
Shafts, penetrations
Duct and flue shafts and other similar penetrations to exterior or unconditioned space shall be sealed to allow for expansion, contraction and mechanical vibration.
Utility penetrations of the air barrier shall be caulked, gasketed or otherwise sealed and shall allow for expansion, contraction of materials and mechanical vibration.
Insulation shall be fitted tightly around utilities passing through shafts and penetrations in the building thermal envelope to maintain required R-value.
Narrow cavities
Narrow cavities of 1 inch or less that are not able to be insulated shall be air sealed
Batts to be installed in narrow cavities shall be cut to fit or narrow cavities shall be filled with insulation that on installation readily conforms to the available cavity space.
Garage separation
Air sealing shall be provided between the garage and conditioned spaces.
Insulated portions of the garage separation assembly shall be installed in accordance with Sections R303 and R402.2.7.
Recessed lighting
Recessed light fixtures installed in the building thermal envelope shall be sealed in accordance with Section R402.4.5.
Recessed light fixtures installed in the building thermal envelope shall be airtight and IC rated, and shall be buried or surrounded with insulation.
Plumbing, wiring or other obstructions
All holes created by wiring, plumbing or other obstructions in the air barrier assembly shall be air sealed.
Insulation shall be installed to fill the available space and surround wiring, plumbing, or other obstructions, unless the required R-value can be met by installing insulation and air barrier systems completely to the exterior side of the obstructions.
Shower/tub on exterior wall
Exterior walls adjacent to showers and tubs shall be insulated.
Electrical/phone box on exterior walls
The air barrier shall be installed behind electrical and communication boxes. Alternatively, air-sealed boxes shall be installed.
HVAC register boots
HVAC supply and return register boots that penetrate building thermal envelope shall be sealed to the subfloor, wall covering or ceiling penetrated by the boot.
Concealed sprinklers
Where required to be sealed, concealed fire sprinklers shall only be sealed in a manner that is recommended by the manufacturer. Caulking or other adhesive sealants shall not be used to fill voids between fire sprinkler cover plates and walls or ceilings.
For SI: 1 inch = 25.4 mm.
a.
Inspection of log walls shall be in accordance with the provisions of ICC 400.
b.
Air barrier and insulation full enclosure is not required in unconditioned/ventilated attic spaces and at rim joists.
48. 
Amend Subsection N1102.4.4 (R402.4.1.3) by inserting the following:
"Exception 3. Mechanical equipment in an unfinished space."
49. 
Amend Subsection N1103.3.4 (R403.3.4) by deleting the text in its entirety and inserting, "Ducts, air handlers and filter boxes shall be sealed. Joints and seams shall comply with either the International Mechanical Code or Section M1601.4.1 of this code, as applicable.
Exceptions:
1. 
Air-impermeable spray foam products shall be permitted to be applied without additional joint seals.
2. 
Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressure less than two (2) inches of water column (500 Pa) pressure classification shall not require additional closure systems.
3. 
A duct air leakage test shall not be required where the ducts and air handlers are located entirely within the building thermal envelope."
50. 
Amend Subsection N1103.3.5 (R403.3.5) by deleting Exception 1 text and inserting, "A duct air-leakage test shall not be required where the ducts and air handlers are located entirely within the building thermal envelope."
51. 
Amend Subsection N1103.3.7 (R403.3.7) by deleting the text in its entirety and inserting, "Building framing cavities used as air plenums shall comply with M1601.1.1."
52. 
Amend Subsection N1103.5.2 (R403.5.2) by deleting the text in its entirety and inserting, "Insulation for service hot water piping with a thermal resistance, R-value, of not less than R-3 shall be applied to the following:
1. 
Piping larger than 3/4 inch (19 mm) in nominal diameter located inside the conditioned space.
2. 
Piping serving more than one (1) dwelling unit.
3. 
Piping located outside the conditioned space.
4. 
Piping from the water heater to a distribution manifold.
5. 
Piping located under a floor slab.
6. 
Buried piping.
7. 
Supply and return piping in circulation and recirculation systems other than cold water pipe return demand recirculation systems."
53. 
Amend Subsection N1103.6 (R403.2) by deleting the text in its entirety and inserting, "Buildings and dwelling units shall be provided with mechanical ventilation that complies with the requirements of Section M1505 or with other approved means of ventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating."
54. 
Delete Subsection N1103.6.1 (R403.6.1) in its entirety without replacement.
55. 
Delete Subsection N1103.6.2 (R403.6.2) in its entirety without replacement.
56. 
Delete Table N1103.6.2 (403.6.2) in its entirety without replacement.
57. 
Delete Subsection N1103.6.3 (R403.6.3) in its entirety without replacement.
58. 
Amend Subsection N1104.2 (R404.2) by deleting the text in its entirety and inserting, "Permanently installed lighting fixtures may be controlled with a dimmer, an occupant sensor control or another control that is installed or built into the fixture.
Exceptions: Lighting controls shall not be required for the following:
1. 
Bathrooms.
2. 
Hallways.
3. 
Exterior lighting fixtures.
4. 
Lighting designed for safety or security."
59. 
Delete Subsection N1104.3 (R404.3) in its entirety without replacement.
60. 
Amend Subsection M1301 by deleting the text in its entirety and inserting, "Each ten feet (10'-0") length of pipe and tubing and each pipe fitting utilized in a mechanical system shall bear the identification of the manufacture."
61. 
Amend Subsection 1307.2 by deleting the text in its entirety and inserting, "Appliances designed to be fixed in position shall be fastened or anchored in an approved manner. In Seismic Design Categories D0, D1 and D2, water heaters and thermal storage units shall be anchored or strapped to resist horizontal displacement caused by earthquake motion in accordance with one (1) of the following:
1. 
Anchorage and strapping shall be designed to resist a horizontal force equal to one-third of the operating weight of the water heater storage tank, acting in any horizontal direction. Strapping shall be at points within the upper one-third and lower one-third of the appliance's vertical dimensions. At the lower point, the strapping shall maintain a minimum distance of four (4) inches (102 mm) above the controls.
2. 
The anchorage strapping shall be in accordance with the appliance manufacturer's recommendations."
62. 
Amend Table M1601.1.1 with the following deletions and additions:
Table M1601.1.1
Duct Construction Minimum Sheet Metal Thickness for Single Dwelling Unitsa
Static Pressure
1/2 inch water gage
1 inch water gage
Thickness
(inches)
Thickness
(inches)
(inches)
Galvanized
Aluminum
Galvanized
Aluminum
Round Duct Diameter
<= 12
0.013
0.018
0.013
0.018
12 to 14
0.013
0.018
0.016
0.023
15 to 17
0.016
0.023
0.019
0.027
18
0.016
0.023
0.024
0.034
19 to 20
0.019
0.027
0.024
0.034
Rectangular Duct Dimension
(largest dimension)
<= 8
0.013
0.018
0.013
0.018
9 to 10
0.013
0.018
0.016
0.023
11 to 12
0.016
0.023
0.019
0.027
13 to 16
0.016
0.027
0.019
0.027
17 to 18
0.019
0.027
0.024
0.034
19 to 20
0.019
0.034
0.024
0.034
For SI: 1 inch = 25.4 mm, 1 inch water gage = 249 Pa.
a.
Ductwork that exceeds 20 inches by dimension or exceeds a pressure of 1 inch water gage shall be constructed in accordance with SMACNA HVAC Duct Construction Standards - Metal and Flexible.
63. 
Amend Subsection 1601.4.1 by deleting the text in its entirety and inserting, "Joints of duct systems shall be made substantially airtight in an unconditioned area by means of tapes, mastics, liquid sealants, gasketing or other approved closure systems. Closure systems used with rigid fibrous glass ducts shall comply with UL 181A and shall be marked 181A-P for pressure-sensitive tape, 181A-M for mastic or 181A-H for heat-sensitive tape. Closure systems used with flexible air ducts and flexible air connectors shall comply with UL 181B and shall be marked 181B-FX for pressure-sensitive tape or 181B-M for mastic. Duct connections to flanges of air distribution system equipment or sheet metal fittings shall be mechanically fastened. Mechanical fasteners for use with flexible nonmetallic air ducts shall comply with UL 181B and shall be marked 181B-C. Crimp joints for round metal ducts shall have a contact lap of at least one (1) inch and shall be mechanically fastened with at least three (3) sheet metal screws or rivets equally spaced around the joint. Closure systems used to seal metal ductwork shall be installed in accordance with the manufacturer's installation instructions.
Exceptions:
1. 
Spray polyurethane foam shall be permitted to be applied without additional joint seals.
2. 
Where a duct connection is made that is partially without access, three screws or rivets shall be equally spaced on the exposed portion of the joint so as to prevent a hinge effect.
3. 
Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressure less than two (2) inches of water column (500 Pa) pressure classification shall not require additional closure systems."
64. 
Amend Subsection M1602.2 by deleting the text in its entirety and inserting, "Return air openings for heating, ventilation and air conditioning systems shall comply with all of the following:
1. 
Openings shall not be located less than ten (10) feet (3,048 mm) measured in any direction from an open combustion chamber or draft hood of another appliance located in the same room or space.
2. 
Return and transfer openings shall be sized in accordance with the appliance or equipment manufacturers' installation instructions, Manual D or the design of the registered design professional.
3. 
Return air shall not be taken from a closet less than 70 square feet, bathroom, toilet room, kitchen, garage, mechanical room, boiler room, furnace room or unconditioned attic.
Exceptions:
1. 
Taking return air from a kitchen is not prohibited where such return air openings serve the kitchen only, and are located not less than 10 feet (3,048 mm) from the cooking appliances.
2. 
Dedicated forced air systems serving only the garage shall not be prohibited from obtaining return air from a garage.
4. 
For other than dedicated HVAC systems, return air shall not be taken from indoor swimming pool enclosures and associated deck areas except where the air in such spaces is dehumidified.
5. 
Taking return air from an unconditioned crawl space shall not be accomplished through a direct connection to the return side of a forced-air furnace. Transfer openings in the crawl space enclosure shall not be prohibited.
6. 
Return air from one (1) dwelling unit shall not be discharged into another dwelling unit."
65. 
Amend Subsection G2442.3 (618.3) inserting the following text as item (6) Exception (3): "Where a closet seventy (70) square feet or greater in size is provided with a supply register, taking return air from the closet shall not be prohibited."
66. 
Amend Subsection P2603.5.1 Sewer depth by inserting the numbers "18" and "30" respectively.
67. 
Amend Subsection P2801.8 by deleting the text in its entirety and inserting, "In Seismic Design Categories D0, D1 and D2, water heaters shall be anchored or strapped in the upper one-third and in the lower one-third of the appliance to resist a horizontal force equal to one-third of the operating weight of the water heater, acting in any horizontal direction, or in accordance with the appliance manufacturer's recommendations."
68. 
Amend Table P2906.4 Water Service Pipe by deleting "Type M and WM."
69. 
Amend Subsection P3201.2.1 by inserting the following: "Exception: Basement floor drains with a condensate line draining to it."
70. 
Amend Subsection P3103.1 Roof Extension by replacing "six (6) inches (152 mm)" with "twelve (12) inches (304 mm)."
71. 
Delete Subsection E3601.8 in its entirety without replacement.
72. 
Delete Subsection E3606.5 in its entirety without replacement.
73. 
Delete Subsection 3606.5.1 in its entirety without replacement.
74. 
Delete Subsection 3606.5.2 in its entirety without replacement.
75. 
Delete Subsection 3606.5.3 in its entirety without replacement.
76. 
Amend Subsection E3902.2 by inserting the following: "Exception: Fastened in place appliances or outlets designated for refrigerators/freezers."
77. 
Amend Subsection E3902.5 by deleting the text and inserting the following: "125-volt through 250-volt receptacles installed in basements and supplied by single-phase branch circuits rated 150 volts or less to ground shall have ground-fault circuit-interrupter protection for personnel. [210.8(A)(5)]
Exceptions:
1. 
A receptacle supplying only a permanently installed fire alarm or burglar alarm system. A receptacle installed in accordance with this exception shall not be considered as meeting the requirements of Section E3901.9. Receptacles installed in accordance with this exception shall not be considered as meeting the requirement of Section E3901.9. [210.8(A)(5) Exception]
2. 
Fastened in place appliances or outlets designated for refrigerators/freezers.
3. 
Unfinished Basements — defined as portions or areas of the basement not intended as habitable rooms.
78. 
Amend Subsection E3902.6 by inserting the following: "Exception: Fastened in place appliances or outlets designated for refrigerators/freezers."
79. 
Delete Subsection E3902.9 in its entirety without replacement.
80. 
Delete Subsection E3902.11 in its entirety without replacement.
81. 
Amend Subsection E3902.15 by deleting the text in its entirety and inserting, "Ground-fault circuit interrupters shall be installed only in a readily accessible location. [210.8(C)]."
82. 
Amend Subsection E3902.20 by deleting the text in its entirety and inserting, "Branch circuits that supply 120-volt, single phase, 15- and 20-ampere outlets installed in bedrooms shall be protected by any of following: § 1. § 1. [210.12(A)]
1.
A listed combination-type arc-fault circuit interrupter, installed to provide protection of the entire branch circuit. [210.12(A)(1)]
2.
A listed branch/feeder-type AFCI installed at the origin of the branch-circuit in combination with a listed outlet branch-circuit type arc-fault circuit interrupter installed at the first outlet box on the branch circuit. The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet of the circuit. [210.12(A)(2)]
3.
A listed supplemental arc-protection circuit breaker installed at the origin of the branch circuit in combination with a listed outlet branch-circuit type arc-fault circuit-interrupter installed at the first outlet box on the branch circuit where all of the following conditions are met:
a)
The branch-circuit wiring shall be continuous from the branch-circuit overcurrent device to the outlet branch-circuit arc-fault circuit interrupter.
b)
The maximum length of the branch-circuit wiring from the branch-circuit overcurrent device to the first outlet shall not exceed fifty (50) feet (15.2 m) for 14 AWG conductors and seventy (70) feet (21.3 m) for 12 AWG conductors.
c)
The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet on the circuit. [210.12(A)(3)]
4.
A listed outlet branch-circuit-type arc-fault circuit interrupter installed at the first outlet on the branch circuit in combination with a listed branch-circuit overcurrent protective device where all of the following conditions are met:
4.1.
The branch-circuit wiring shall be continuous from the branch-circuit overcurrent device to the outlet branch-circuit arc-fault circuit interrupter.
4.2.
The maximum length of the branch-circuit wiring from the branch-circuit overcurrent device to the fist outlet shall not exceed fifty (50) feet (15.2 m) for 14 AWG conductors and seventy (70) feet (21.3 m) for 12 AWG conductors.
4.3.
The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet on the circuit.
4.4.
The combination of the branch-circuit overcurrent device and outlet branch-circuit AFCI shall be identified as meeting the requirements for a system combination-type AFCI and shall be listed as such. [210.12(A)(4)]
5.
Where metal raceways, metal wireways, metal auxiliary gutters or Type MC or Type AC cable meeting the applicable requirements of Section E3908.9 with metal boxes, metal conduit bodies and metal enclosures are installed for the portion of the branch circuit between the branch-circuit overcurrent device and the first outlet, a listed outlet branch-circuit type AFCI installed at the first outlet shall be considered as providing protection for the remaining portion of the branch circuit. [210.12(A)(5)]
6.
Where a listed metal or nonmetallic conduit or tubing or Type MC cable is encased in not less than two (2) inches (50.8 mm) of concrete for the portion of the branch circuit between the branch-circuit overcurrent device and the first outlet, a listed outlet branch-circuit type AFCI installed at the first outlet shall be considered as providing protection for the remaining portion of the branch circuit. [210.12(A)(6)]
Exception: AFCI protection shall not be required for an individual branch circuit supplying a fire alarm system where the branch circuit is installed in a metal raceway, metal auxiliary gutter, steel-armored cable, Type MC or Type AC, meeting the requirements of Section E3908.9, with metal boxes, conduit bodies and enclosures."
83. 
Delete Subsection E4002.14 in its entirety without replacement.
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Mechanical Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection 101.1 by inserting, "City of De Soto, Missouri."
2. 
Amend Subsection 103.2 by inserting, "Building Department."
3. 
Amend Subsection 103.2 by deleting the text in its entirety and inserting, "The Building Official, under the Code, shall be the City Manager or the duly authorized representative of the City Manager."
4. 
Amend Subsection 107.1 by deleting the following text, "when required by State law."
5. 
Amend Section 113 by deleting in its entirety and inserting, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
6. 
Amend Subsection 115.4 by deleting the text in its entirety and inserting, "See "Violation Penalties" as provided in Section 500.020 of the City's Code of Ordinances."
7. 
Amend Subsection 301.10 by replacing "NFPA 70" with "the Electrical Code adopted under Section 500.110 of the City Code of Ordinances."
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Plumbing Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection 101.1 by inserting, "City of De Soto, Missouri."
2. 
Amend Subsection 103.1 by inserting, "Building Department."
3. 
Amend Subsection 103.2 by deleting the text in its entirety and inserting, "The Building Official, under the Code, shall be the City Manager or the duly authorized representative of the City Manager."
4. 
Amend Subsection 107.1 by deleting the following text, "where required by State law."
5. 
Amend Section 113 by deleting the Section in its entirety and inserting, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
6. 
Amend Subsection 115.4 by deleting the text in its entirety and inserting, "See "Violation Penalties" as provided in Section 500.020 of the City's Code of Ordinances."
7. 
Amend Subsection 305.4.1 by inserting, "eighteen (18)" and "eighteen (18) inches or other approved depth."
8. 
Add Subsection 703.1.1 "Minimum Size Building Sewers. The gravity building sewer shall not be less than four (4) inches in size."
9. 
Amend Table 710.1(1) by adding the following footnotes, "b. The minimum size of the main building drain shall be four (4) inches. c. The maximum developed length of an underground two (2) inch pipe shall be twenty (20) feet."
10. 
Amend Subsection 903.1.1 by inserting, "Twelve (12)."
11. 
Amend Subsection 903.2 by replacing, "three (3) inches (76 mm)" with "two (2) inches (50.8 mm)."
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Energy Conservation Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection C101.1 by inserting, "City of De Soto, Missouri."
2. 
Amend Section C110 by deleting the Section in its entirety and inserting, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
3. 
Amend Subsection R101.1 by inserting, "City of De Soto, Missouri."
4. 
Amend Section R110 by deleting the Section in its entirety and replacing with, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Fuel Gas Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection 101.1 by inserting, "City of De Soto, Missouri."
2. 
Amend Subsection 103.1 by inserting, "Building Department."
3. 
Amend Subsection 103.2 by deleting the text in its entirety and inserting, "The Building Official, under the Code, shall be the City Manager or the duly authorized representative of the City Manager."
4. 
Amend Section 113 by deleting the Section in its entirety and inserting, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
5. 
Delete Section 114 without replacement.
6. 
Amend Subsection 115.4 by deleting the text in its entirety and inserting, "See "Violation Penalties" as provided in Section 500.020 of the City's Code of Ordinances."
[Ord. No. 3718 §1, 1-22-2007; Ord. No. 3887 §1, 5-16-2011; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Swimming Pool and Spa Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection 101.1 by inserting, "City of De Soto Missouri."
2. 
Amend Subsection 103.1 by inserting, "Building Department."
3. 
Amend Subsection 103.2 by deleting the text in its entirety and inserting, "The Building Official, under the Code, shall be the City Manager or the duly authorized representative of the City Manager."
4. 
Amend Subsection 108.2 by deleting the text in its entirety and inserting, "The permit fee for the installation, alteration or repair of structures govern by this code shall be fifty dollars ($50.00)."
5. 
Amend Section 111 by deleting the Section in its entirety and inserting, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
6. 
Delete Section 112 without replacement.
7. 
Amend Subsection 113.4 by deleting the text in its entirety and inserting, "See "Violation Penalties" as provided in Section 500.020 of the City's Code of Ordinances."
8. 
Add Subsection "301.1.2 Setbacks. Swimming shall have a separation distance from other structures and property lines of no less than 10 feet."
9. 
Amend Subsection 320.1 by deleting "sanitary."
[Ord. No. 4138, 11-19-2018; Ord. No. 4527, 3-18-2019; Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the International Property Maintenance Code, 2021 Edition, are revised as follows:
1. 
Amend Subsection 101.1 by inserting, "City of De Soto Missouri."
2. 
Amend Subsection 102.3 by deleting the text in its entirety and inserting, "Repairs, additions or alterations to a structure, or change of occupancy, shall be done in accordance with the procedures and provisions of the applicable requirements of the City's Code of Ordinances."
3. 
Amend Subsection 103.1 by inserting, "Building Department."
4. 
Amend Subsection 103.2 by deleting the text in its entirety and inserting, "The Building Official, under the Code, shall be the City Manager or the duly authorized representative of the City Manager."
5. 
Amend Section 107 by deleting the Section in its entirety and replacing with, "See "Means of Appeal" as provided in Section 500.020 of the City's Code of Ordinances."
6. 
Delete Section 108 without replacement.
7. 
Amend Subsection 201.3 by deleting the text "International Zoning Code" and replacing with "Code of ordinances of the City of De Soto."
8. 
Amend Subsection 302.4 by deleting, "[Jurisdiction to insert height in inches]" and replace with, "seven (7) inches."
9. 
Amend Subsection 304.14 by deleting, "[Date] to [Date]" and replace with, "January 1st to December 31st."
10. 
Amend Subsection 602.3 by deleting "[Date] to [Date]" and replace with "October 1st to March 31st."
11. 
Amend Subsection 602.4 by deleting "[Date] to [Date]" and replace with "October 1st to March 31st."
12. 
Added Subsection "605.2.1 Ground Fault Circuit Interrupter Protection. Ground-fault circuit interrupter protection shall be provided and meet the requirements of the currently adopted National Electric Code."
13. 
Add Subsection "606.1.1 State Certification. The operation of any elevator, conveying system or component for which a current State operating certificate has been issued shall satisfy the requirements of Section 606."
14. 
Add Subsection "606.1.2 Operation Prohibited. The operation of any elevator, conveying system or component for which a current State operating certificate has not been issued shall be prohibited."
15. 
Add Subsection "703.3.4 Dwelling-Garage Fire Separation. Where a garage was built either attached to or under a dwelling and no fire separation was required at the time of construction, the garage shall meet one (1) of the following options:
1. 
Meet the fire separation requirements of the currently adopted International Residential Code.
2. 
Remove the garage door and construct a wall meeting exterior wall requirements found in the Section 500.040 of the City's Code of Ordinances. The new wall may contain a door opening no larger than thirty-six (36) inches when approved.
3. 
Install smoke alarms meeting the requirements of new construction per the currently adopted International Residential Code. A smoke alarm device shall be installed in the garage area along with the other required locations.
4. 
Install battery powered wireless interconnected smoke alarms in all locations required in Sections 704.6.1.2 and the garage area."
16. 
Amend Chapter 8 to replace "International Zoning Code" with "City of De Soto Code of Ordinances."
[Ord. No. 5041, 4-21-2025]
A. 
The following Sections of the National Electrical Code, 2020 Edition, are revised as follows:
1. 
Amend Section 210.8(A)(2) by adding the following "Exception: Fastened in place appliances or outlets designated for refrigerators/freezers."
2. 
Amend Section 210.8(A)(5) by deleting the text and inserting "Basements. 125-volt through 250-volt receptacles installed in basements and supplied by single-phase branch circuits rated 150 volts or less to ground shall have ground-fault circuit-interrupter protection for personnel.
Exceptions:
1. 
A receptacle supplying only a permanently installed fire alarm or burglar alarm system. A receptacle installed in accordance with this exception shall not be considered as meeting the requirements of Section E3901.9. Receptacles installed in accordance with this exception shall not be considered as meeting the requirement of Section E3901.9.
2. 
Fastened in place appliances or outlets designated for refrigerators/freezers.
3. 
Unfinished Basements — defined as portions or areas of the basement not intended as habitable rooms."
3. 
Amend Section 210.8(A)(6) by inserting the following: "Exception: Fastened in place appliances or outlets designated for refrigerators/freezers."
4. 
Delete Section 210.8(A)(10) in its entirety without replacement.
5. 
Amend Section 210.8(C) by deleting the text and inserting the following: "Ground-fault circuit interrupters shall be installed only in a readily accessible location."
6. 
Amend Section 201.12(A) by deleting the text and inserting the following: "____"
7. 
Delete Section 230.67 in its entirety without replacement.
8. 
Delete Section 230.85 in its entirety without replacement.
9. 
Amend Section 201.12(A) by deleting the text and inserting the following: "Branch circuits that supply 120-volt, single phase, 15- and 20-ampere outlets installed in bedrooms shall be protected by any of following:
1. 
A listed combination-type arc-fault circuit interrupter, installed to provide protection of the entire branch circuit.
2. 
A listed branch/feeder-type AFCI installed at the origin of the branch-circuit in combination with a listed outlet branch-circuit type arc-fault circuit interrupter installed at the first outlet box on the branch circuit. The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet of the circuit.
3. 
A listed supplemental arc-protection circuit breaker installed at the origin of the branch circuit in combination with a listed outlet branch-circuit type arc-fault circuit-interrupter installed at the first outlet box on the branch circuit where all of the following conditions are met:
a. 
The branch-circuit wiring shall be continuous from the branch-circuit overcurrent device to the outlet branch-circuit arc-fault circuit interrupter.
b. 
The maximum length of the branch-circuit wiring from the branch-circuit overcurrent device to the first outlet shall not exceed fifty (50) feet (15.2 m) for fourteen (14) AWG conductors and seventy (70) feet (21.3 m) for twelve (12) AWG conductors.
c. 
The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet on the circuit.
4. 
A listed outlet branch-circuit-type arc-fault circuit interrupter installed at the first outlet on the branch circuit in combination with a listed branch-circuit overcurrent protective device where all of the following conditions are met:
a. 
The branch-circuit wiring shall be continuous from the branch-circuit overcurrent device to the outlet branch-circuit arc-fault circuit interrupter.
b. 
The maximum length of the branch-circuit wiring from the branch-circuit overcurrent device to the fist outlet shall not exceed fifty (50) feet (15.2 m) for fourteen (14) AWG conductors and seventy (70) feet (21.3 m) for twelve (12) AWG conductors.
c. 
The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet on the circuit.
d. 
The combination of the branch-circuit overcurrent device and outlet branch-circuit AFCI shall be identified as meeting the requirements for a system combination-type AFCI and shall be listed as such.
5. 
Where metal raceways, metal wireways, metal auxiliary gutters or Type MC or Type AC cable meeting the applicable requirements of Section E3908.9 with metal boxes, metal conduit bodies and metal enclosures are installed for the portion of the branch circuit between the branch-circuit overcurrent device and the first outlet, a listed outlet branch-circuit type AFCI installed at the first outlet shall be considered as providing protection for the remaining portion of the branch circuit.
6. 
Where a listed metal or nonmetallic conduit or tubing or Type MC cable is encased in not less than two (2) inches (50.8 mm) of concrete for the portion of the branch circuit between the branch-circuit overcurrent device and the first outlet, a listed outlet branch-circuit type AFCI installed at the first outlet shall be considered as providing protection for the remaining portion of the branch circuit.
Exception: AFCI protection shall not be required for an individual branch circuit supplying a fire alarm system where the branch circuit is installed in a metal raceway, metal auxiliary gutter, steel-armored cable, Type MC or Type AC, meeting the requirements of Section E3908.9, with metal boxes, conduit bodies and enclosures."
10. 
Amend Section 402.12(1) by deleting in its entirety without replacement.
[Ord. No. 3718 §1, 1-22-2007]
A. 
Any new construction or major structural renovation begun after January 1, 1991, all buildings for which leases are executed by political subdivision of the State after January 1, 1994 and all buildings for which leases are executed by the State or any institution of higher education after January 1, 1994 shall comply with the standards for seismic design and construction of the Building Officials and Code Administrators Code or of the Uniform Building Code.
B. 
This Section shall not apply to any building owned by the State, any institution of higher education, any political subdivision upon which construction was begun or finished before December 17, 1990, any private structure with less than ten thousand (10,000) square feet in total area or any single-family or duplex residence.
C. 
As used in this Section, the term "major structural renovation" means any reconstruction, rehabilitation, addition or other improvement of an existing structure, the cost of which equals or exceeds fifty percent (50%) of the market value of the structure before the start of construction of the major structural renovation.