A. Delete the exception under Section R101.2 Scope, and replace with the following:
Exception: The following shall also be permitted to be constructed in accordance with this code: 1. Owner-occupied lodging houses with five (5) or fewer guestrooms and ten (10) or fewer total occupants. 2. A care facility with five (5) or fewer persons receiving custodial care within a dwelling unit or single-family dwelling. 3. A care facility for five (5) or fewer persons receiving personal care that are within a dwelling unit or single-family dwelling. 4. A care facility with twelve (12) or fewer children receiving day care within a dwelling unit or single-family dwelling. (3-20-20)T
B. Delete Section R104.10.1 Flood hazard areas.(3-20-20)T
C. Delete item number 7 under the “Building” subheading of Section R105.2 Work exempt from permit, and replace with the following: 7. Prefabricated swimming pools that are not greater than four (4) feet (one thousand, two hundred nineteen (1219) mm) deep.(3-20-20)T
D. Add the following as item number 11 under the “Building” subheading of Section R105.2 Work exempt from permit: 11. Flag poles. (3-20-20)T
E. Delete Section R109.1.3 and replace with the following: R109.1.3 Floodplain inspections. For construction in areas prone to flooding as established by Table R301.2(1), upon placement of the lowest floor, including basement, the building official is authorized to require submission of documentation of the elevation of the lowest floor, including basement, required in Section R322.(3-20-20)T
F. Delete Section R301.2.1.2 Protection of Openings.(3-20-20)T
TABLE R302.1(1) - EXTERIOR WALLS
EXTERIOR WALL ELEMENT | MINIMUM FIRE-RESISTANCE RATING
| MINIMUM FIRE SEPARATION DISTANCE
| |
Walls | Fire-resistance rated | 1 hour-tested in accordance with ASTM E 119, UL263, or Section 703.3 of the International Building Code with exposure from both sides | < 3 feet |
Not fire-resistance rated | 0 hours | 3 feet | |
G. Delete Table R302.1(1) and replace with the following:
EXTERIOR WALL ELEMENT | MINIMUM FIRE- RESISTANCE RATING
| MINIMUM FIRE SEPARATION DISTANCE
| |
EXTERIOR WALL ELEMENT | MINIMUM FIRE- RESISTANCE RATING
| MINIMUM FIRE SEPARATION DISTANCE
| |
Projections | Fire-resistance rated | 1 hour on the underside, or heavy timber or fire retardant-treated wood a, b | 2 feet to < 3 feet |
Not fire-resistance rated | 0 hours | 3 feet | |
Openings in walls | Not allowed | N/A | < 3 feet |
25% maximum of wall area | 0 hours | 3 feet to 5 feet | |
Unlimited | 0 hours | 5 feet | |
Penetrations | All | Comply with Section R302.4 | < 3 feet |
None required | 3 feet | ||
For SI: 1 foot = 304.8 mm.
N/A = Not Applicable
a The fire-resistance rating shall be permitted to be reduced to zero (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.
b The fire-resistance rating shall be p33rmitted to be reduced to zero (0) hours on the underside of the rake overhang where gable vent openings are not installed. (2-20-20)T
H. Delete Section R302.13 Fire protection of floors.(3-20-20)T
I. Delete Section R303.4 and replace with the following: R303.4 Mechanical Ventilation. Dwelling units shall be provided with whole-house mechanical ventilation in accordance with Section M1505.4. (3-20-20)T
J. Delete the exception under Section R313.1 Townhouse automatic fire sprinkler systems, and replace with the following: Exception: Automatic residential fire sprinkler systems shall not be required in townhouses where either two (2) one (1)-hour fire-resistance-rated walls or a common two (2)-hour fire-resistance rated wall, as specified in item number 2 of Section R302.2.2 is installed between dwelling units or when additions or alterations are made to existing townhouses that do not have an automatic residential fire sprinkler system installed.(3-20-20)T
K. Delete Section R313.2 One- and two-family dwellings automatic fire sprinkler systems.(3-20-20)T
L. Delete the exceptions under Section R314.2.2 Alterations, repairs and additions, and replace with the following: Exceptions: 1. Work involving the exterior surfaces of dwellings, such as, but not limited to, replacement of roofing or siding, or the addition or replacement of windows or doors, or the addition of a porch or deck or electrical permits, are exempt from the requirements of this section. 2. Installation, alteration or repairs of plumbing or mechanical systems are exempt from the requirements of this section. (3-20-20)T
M. Delete the exceptions under Section R315.2.2 Alterations, repairs and additions, and replace with the following: Exceptions: 1. Work involving the exterior surfaces of dwellings, such as, but not limited to, replacement of roofing or siding, or the addition or replacement of windows or doors, or the addition of a porch or deck or electrical permits, are exempt from the requirements of this section. 2. Installation, alteration or repairs of non combustion plumbing or mechanical systems are exempt from the requirements of this section.(3-20-20)T
N. Delete Section R322.1.10 As-built elevation documentation. (3-20 -20)T
O. Delete Section R322.2.1 and replace with the following: R322.2.1 Elevation requirements. 1. Buildings and structures in flood hazard areas, including flood hazard areas designated as Coastal A Zones, shall have the lowest floors elevated to or above the base flood elevation. 2. In areas of shallow flooding (AO Zones), building sand structures shall have the lowest floors (including basement) elevated to a height above the highest adjacent grade of not less than the depth number specified in feet (mm) on the FIRM, or not less than two (2) feet (610 mm) if a depth number is not specified. 3. Basement floors that are below grade on all sides shall be elevated to or above baseflood elevation. Exception: Enclosed areas below the design flood elevation, including basements with floors that are not below grade on all sides, shall meet the requirements of Section R322.2.2.(3-20-20)T
P Delete subparagraph 2.1 of Section R322.2.2 Enclosed area below design flood elevation, and replace with the following: 2.1. The total net area of all openings shall be at least one (1) square inch (645 mm2) for each square foot (0.093 m2) of enclosed area, or the opening shall be designed and the construction documents shall include a statement that the design and installation of the openings will provide for equalization of hydrostatic flood forces on exterior walls by allowing the automatic entry and exit of floodwaters.(3-20-20)T
Q. Delete Tables R403.4 Minimum Depth (D) and Width (W) of Crushed Stone Footings (inches),R403.1(1) Minimum Width and Thickness for Concrete Footings for Light-Frame Construction (inches), R403.1(2)Minimum Width and Thickness for Concrete Footings for Light-Frame Construction and Brick Veneer (inches), andR403.1(3) Minimum Width and Thickness for Concrete Footings with Cast-In-Place or Fully Grouted Masonry Wall Construction (inches).(3-20-20)T
R. Add the following as Table R403.1:
TABLE R403.1
MINIMUM WIDTH OF CONCRETE, PRECAST, OR MASONRY FOOTINGS (inches)a
LOAD-BEARING VALUE OF SOIL (psf) | ||||
1,500 | 2,000 | 3,000 | 4,000 | |
LOAD-BEARING VALUE OF SOIL (psf) | ||||
1,500 | 2,000 | 3,000 | 4,000 | |
Conventional light-frame construction | ||||
1-Story | 12 | 12 | 12 | 12 |
2-Story | 15 | 12 | 12 | 12 |
3-Story | 23 | 17 | 12 | 12 |
4-inch brick veneer over light frame or 8-inch hollow concrete masonry | ||||
1-Story | 12 | 12 | 12 | 12 |
2-Story | 21 | 16 | 12 | 12 |
3-Story | 32 | 24 | 16 | 12 |
8-inch solid or fully grouted masonry | ||||
1-Story | 16 | 12 | 12 | 12 |
2-Story | 29 | 21 | 14 | 12 |
3-Story | 42 | 32 | 21 | 16 |
For SI: 1 inch = 25.4 mm, 1 pound per square foot = 0.0479kPa.
a Where minimum footing width is twelve (12) inches, use of a single wythe of solid or fully grouted twelve (12)-inch nominal concrete masonry units is permitted. (3-20-20)T
S. Delete Section R403.1.1 and replace with the following: R403.1.1 Minimum size. Minimum sizes for concrete and masonry footings shall be as set forth in Table R403.1 and Figure R403.1(1). The footing width (W) shall be based on the load bearing value of the soil in accordance with Table R401.4.1. Spread footings shall be at least six (6) inches in thickness (T). Footing projections (P) shall be at least two (2) inches and shall not exceed the thickness of the footing. The size of footings supporting piers and columns shall be based on the tributary load and allowable soil pressure in accordance with Table R401.4.1. Footings for wood foundations shall be in accordance with the details set forth in Section R403.2 and Figures R403.1(2) and R403.1(3).(3-20-20)T
T. Delete Section R602.10 and replace with the following: R602.10 Wall bracing. Buildings shall be braced in accordance with this Section or, when applicable Section R602.12, or the most current edition of APA System Report SR-102 as an alternate method. Where a building, or portion thereof, does not comply with one (1) or more of the bracing requirements in this Section, those portions shall be designed and constructed in accordance with Section R301.1.(3-20-20)T (2020-10, 12-23-2020)