Table 28.14.003(a)
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Administrative Provisions Cross-Reference
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2021 International Residential Code Section
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Section Heading/Subject
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Refer to Lubbock Code of Ordinances Section
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R105.2
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Work exempt from permit
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R106.1 & R106.1.1
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Submittal documents and information on construction documents
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R110
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Certificate of occupancy
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R112
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Board of appeals
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R113.4
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Violation penalties
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R114
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Stop work orders
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Table R301.2
Climatic and Geographic Design Criteria
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Ground Snow Load
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15 psf
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Wind Design
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Speed (mph)
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115
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Topographic effects
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No
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Special wind region
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No
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Windborne debris zone
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No
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Seismic Design Category
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A
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Subject to Damage From
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Weathering
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Moderate
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Frost line depth
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12 inches
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Termite
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Moderate to Heavy
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Winter Design Temp
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15 Degrees
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Ice Barrier Underlayment Required
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No
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Flood Hazards
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See Note 1
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Air Freezing Index
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172
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Mean Annual Temp
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59.9 Degrees
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For SI: 1 pound per square foot = 0.0479 kPa, 1 mile per hour
= 0.447 m/s
Note 1. See Unified Development Code (UDC) Article 39.05
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6.
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In garden home developments with easements specifically allowing
overhangs to project into adjacent lots, overhangs may project a maximum
of 2 feet (609.6 mm) across the property line. Such overhangs must
be one-hour fire resistive construction and be decked with fire retardant
treated decking. The overhang shall not be equipped with soffit vents
or penetrations.
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Table R302.1(2)
Exterior Walls
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Exterior Wall Element
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Minimum Fire-Resistance Rating
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Minimum Fire Separation Distance
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Walls
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Fire-resistance rated
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1-hour in accordance with ASTM E119 or UL 263 with exposure
from both sides
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Less than 5 feet
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Non fire-resistance rated
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0 Hours
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5 feet or greater
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Projections
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Not allowed
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N/A
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Less than 2 feet
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Fire-resistance rated
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1 hour on the undersidea,b
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2 feet to less than 3 feet
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Non fire-resistance rated
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0 Hours
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3 feet
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Openings in walls
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Not allowed
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N/A
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Less than 3 feet
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Maximum 25% of wall area
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0 Hours
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3 feet
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Unlimited
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0 Hours
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5 feet
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Penetrations
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All
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Comply with Section R302.4
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Less than 3 feet
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None required
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3 feet or greater
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Notes:
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a.
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Roof eave fire-resistance rating shall be permitted to be reduced
to 0 hours on the underside of the eave if fireblocking is provided
from the wall top plate to the underside of the roof sheathing
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b.
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Roof eave fire-resistance rating shall be permitted to be reduced
to 0 hours on the underside of the eave provided that gable vent openings
are not installed.
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3.
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On exterior walls, approved powder-actuated
pins may be used in lieu of anchor bolts within twelve (12) inches
(304.8 mm) of the joints of sole plates, not including corners.
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Table R403.1.7.3.
Minimum Floor Elevations for Structures Relative to Lot Slope
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Elevation Difference-Top of curb to rear property line
(inches)
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Min. Floor Elevation above top of curb when slope is from front
to rear
(inches)
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Min. Floor Elevation above top of curb when slope is from rear
to front
(inches)
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0
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12
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12
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6
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10.5
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13.5
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12
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9
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15
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18
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8
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16.5
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24
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6
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18
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30
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6
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19.5
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36
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6
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21
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SECTION R406
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FOUNDATION WATER MANAGEMENT
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1.
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2-ply hot-mopped felts.
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2.
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55 pound (25 kg) roll roofing.
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3.
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6-mil (0.15 mm) polyvinyl chloride.
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4.
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6-mil (0.15 mm) polyethylene.
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5.
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40-mil (1 mm) polymer-modified asphalt.
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6.
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60-mil (1.5 mm) flexible polymer cement.
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7.
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1/8-inch (3 mm) cement-based, fiber-reinforced waterproof coating.
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8.
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60-mil, (0.22 mm) solvent-free, liquid-applied synthetic rubber.
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9.
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Other approved materials or methods.
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1.
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At top of all exterior window and door openings in such a manner
as to be leak proof.
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2.
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At the intersection of chimneys or other masonry construction
with frame or stucco walls, with projecting lips on both sides under
stucco copings.
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3.
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Under and at the ends of masonry, wood or metal copings and
sills.
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4.
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Continuously above all projecting wood or composite trim.
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5.
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Where exterior porches, decks or stairs attach to a wall or
floor assembly of wood-frame construction.
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6.
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At wall and roof intersections.
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7.
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At built-in gutters.
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1.
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The requirements of Item 3 above may be omitted if a poured
concrete foundation is used with a minimum 8-inch brick ledge drop.
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2.
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The requirements of Item 3 above may be omitted where soffits,
porches or awnings serve as protection for the upper course of brick
veneer.
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Table 703.8.4(1)
Tie Attachment and Airspace Requirements
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Backing and Tie
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Minimum Tiea
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Minimum Tie Fastenera
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Airspace
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Wood stud backing with corrugated sheet metal
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22 U.S. gage (0.0299 in.) x 7/8 in. wide
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6D - 2" nail, ring shank or #8 - 2" screw
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Nominal 1 in. between sheathing and veneer
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Wood stud backing with metal strand wire
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W1.7 (No. 9 U.S. gage; 0.148 in.) with hook embedded in mortar
joint
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6D - 2" nail, ring shank or #8 - 2" screw
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Minimum nominal 1 in. between sheathing and veneer
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Maximum 4-1/2 in. between backing and veneer
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Cold-formed steel stud backing with adjustable metal strand
wire
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W1.7 (No. 9 U.S. gage; 0.148 in.) with hook embedded in mortar
joint
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No. 10 screw extending through the steel framing a minimum of
three exposed threads
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Minimum nominal 1 in. between sheathing and veneer
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Maximum 4-1/2 in. between backing and veneer
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Note:
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a.
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All ties and fasteners to be corrosion-resistant
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1.
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Water tightness.Each fixture shall be
filled and then drained. Traps and fixture connections shall be proven
watertight by visual inspection.
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2.
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Gas tightness. When required by the building official, a final test for gas tightness of the
DWV system shall be made by the smoke or peppermint test as follows:
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2.1
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Smoke test. Introduce a pungent, thick
smoke into the system. When the smoke appears at vent terminals, such
terminals shall be sealed and a pressure equivalent to a 1-inch water
column (249 Pa) shall be applied and maintained for a test period
of not less than 15 minutes.
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2.2
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Peppermint test. Introduce 2 ounces (59
mL) of oil of peppermint into the system. Add 10 quarts (9464 mL)
of hot water and seal all vent terminals. The odor of peppermint shall
not be detected at any trap or other point in the system.
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