§ 150.070 INTERNATIONAL RESIDENTIAL CODE.
   The following modifications and amendments to the 2018 International Residential Code (IRC) are hereby adopted:
   (A)   IRC Modification. Whenever the International Residential Code refers to the "code official" it shall mean the person appointed or designated by the municipal governing body to administer and enforce the provisions of the Residential Code.
   (B)   (1)   Amend Section R101.1 "Title" by adding the term "The Town of Collierville" in the parenthetic phrase so when amended it reads as follows:
         R101.0 Title. These provisions shall be known as the Residential Code for One-and Two-Family Dwellings of the Town of Collierville, and shall be cited as such and will be referred to herein as "this code."
      (2)   Amend Section R101.2 "Scope" by deleting exceptions 2 thru 5 so when amended it reads as follows:
         Exception: The following shall be permitted to be construction in accordance with this code where provided with a residential fire sprinkler system complying with Section P2904.
         1.   Live/work units located in townhouses and complying with the requirements of Section 419 of the International Building Code.
      (3)   Delete Section R103 "Department of Building Safety" and all subsections under it and reserve the section number so when amended it reads as follows:
         Section R103 - Reserved
      (4)   Amend Section R105.1 "Required" so when amended it reads as follows:
         R105.1 Required. Any owner or authorized agent who intends to construct, enlarge, alter, repair, move, demolish or change the occupancy of a building or structure, or to erect, install, enlarge, alter, repair, remove, convert or replace any electrical, gas, mechanical, plumbing system or irrigation system, the installation of which is regulated by this code, or to cause any such work to be done, shall first make application to the building official and obtain the required permit.
      (5)   Delete Exemptions 1, 2, 3, 4, and amend Exemption 5 under Section R105.2 "Work exempt from permit" category "Building:" so when amended it reads as follows:
         1.   Reserved
         2.   Reserved
         3.   Reserved
         4.   Reserved
         5.   Sidewalks and driveways on private property not more than 30" above adjacent grade
      (6)   Amend Section R105.8 "Responsibility" by adding the following subsection:
         R105.8.1 Components of the irrigation system located within the public right-of-way or utility easements are installed at the owner's risk and shall be the owner's responsibility to replace and/or repair in the event of the utilization of the easement or right-of-way by any and all franchised utility.
      (7)   Delete Section R106.5 "Retention of construction documents" in its entirety with no replacement.
      (8)   Delete Section R108 "Fees" and all subsections under it and reserve the section number so when amended it reads as follows:
         Section R108 - Reserved
      (9)   Amend Section R112.1 "General" so when amended it reads as follows:
         R112.1 General. The Town of Collierville, Construction Board of Adjustments and Appeals shall be the appeals body which is authorized to hear and decide appeals of orders, decisions,or determinations made by the code official regarding the application and interpretation of this code.
      (10)   Amend the "WALLS" definition in Section R202 "Definitions" by adding the following:
         Structural wall. An interior load-bearing wall and/or a wall that forms the perimeter of a floor opening, as defined by R301.2.2.3.8.11.3.
      (11)   Table R301.2(l) shall read as follows and all existing footnotes shall remain unchanged:
TABLE R301.2(l)
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
 
Ground snow loado
Wind design
Seismic design category f
Subject to damage from
Winter design tempe
Ice barrier underlayment requiredh
Flood hazards g
Air freezing indexi
Mean annual tempj
Speedd (mph)
Topographic effectsk
Special wind regionl
Wind- borne debris zonem
Weatheringa
Frost line depthb
Termitec
10 lb/square foot
89 VASD
No
No
No
D0
Moderate
5 inches
Moderate to heavy
18
No
Feb 6, 2013
158
61.8
 
 
MANUAL J DESIGN CRITERIA
Elevation
Latitude
Winter heating
Summer cooling
Altitude correction factor
Indoor design temp
Design temperature cooling
Heating temperature difference
380
35
21
94
-
70
75
-
Cooling temperature difference
Wind velocity heating
Wind velocity cooling
Coincident wet bulb
Daily range
Winter humidity
Summer humidity
-
-
-
77
M
77.5
82.5
 
For SI: 1 pound per square foot=0.0479 kPa, 1 mile per hour=0.447 m/s.
a.   Weathering may require a higher strength concrete or grade of masonry than necessary to satisfy the structural requirements of this code. The weathering column shall be filled in with the weathering index, "negligible," "moderate," or "severe" for concrete as determined from Figure R301.2(3). The grade of masonry units shall be determined from ASTM C 34, C 55, C 62, C 73, C 90, C 129, C 145, C 216 or C 652.
b.   The frost line depth may require deeper footings than indicated in Figure R403.1(l). The jurisdiction shall fill in the frost line depth column with the minimum depth of footing below finish grade.
c.   The jurisdiction shall fill in this part of the table to indicate the need for protection depending on whether there has been a history of local subterranean termite damage.
d.   The jurisdiction shall fill in this part of the table with the wind speed form the basic wind speed map [Figure R301.2(4)A]. Wind exposure category shall be determined on a site-specific basis in accordance with Section R301.2.1.4.
e.   The outdoor design dry bulb temperature shall be selected from the columns of 97 1/2-percent values for winter from Appendix D of the International Plumbing Code. Deviations from the Appendix D temperatures shall be permitted to reflect local climates or local weather experience as determined by the building official.
f.   The jurisdiction shall fill in this part of the table with the seismic design category determined from Section R301.2.2.1.
g.   The jurisdiction shall fill in this part of the table with (a) the date of the jurisdiction's entry into the National Flood Insurance Program (date of adoption of the first code or ordinance for management of flood hazard areas), (b) the date(s) of the Flood Insurance study and (c) the panel numbers and dates of the currently effective FIRMs and FBFMs or other flood hazard map adopted by the authority having jurisdiction, as amended.
h.   In accordance with Sections R905.1.2, R905.4.3.1, R905.5.3.1, R905.6.3.1, R905.7.3.1, R905.8.3.1, where there has been a history of local damage from the effects of ice damming, the jurisdiction shall fill in this part of the table with "YES." Otherwise, the jurisdiction shall fill in this part of the table with "NO."
i.   The jurisdiction shall fill in this part of the table with the 100-year return period air period air freezing index (BF-days) from figure R403.3(2) or from the 100-year (99 percent) value on the National Climatic Data Center data table "Air Freezing Index-USA Method (Base 32°F)."
j.   The jurisdiction shall fill in this part of the table with the mean annual temperature from the National Climatic Data Center data table "Air Freezing Index-USA Method (Base 32°F)."
k.   In accordance with Section R301.2.1.5, where there is local historical data documenting structural damage to buildings due to topographic wind speed-up effects, the jurisdiction shall fill in this part of the table with "YES." Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
l.   In accordance with Figure R301.2(4)A, where there is local historical date documenting unusual wind conditions, the jurisdiction shall fill in this part of the table with "YES." Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
m.   In accordance with Section R301.2.1.2.1, the jurisdiction shall indicate the wind-borne debris wind zone(s). Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
n.   The jurisdiction shall fill in these sections of the table to establish the design criteria using table 1a or 1b from ACCA Manual J or established criteria determined by the jurisdiction.
o.   The jurisdiction shall fill in this section of the table using the Ground Snow Loads in Figure R301.2(6).
      (12)   Amend Section R301.2.2 "Seismic provisions" number 2 so when amended it reads as follows:
         2.   Detached one- and two-family dwellings in D0, Dl and D2, however, such detached one- and two-family dwellings constructed using wood framing in Seismic Design Categories D0, Dl and D2 shall be allowed, as an alternative compliance method for meeting the structural requirements of this code's seismic provisions, to comply with the requirement in Section R301.2.2.11.
      (13)   Amend the 2018 IRC by adding a new Section R301.2.2.11 entitled "Alternative compliance method for structural requirements" along with its Subsections R301.2.2.11.1 through R301.2.2.11.11 so that when amended the new section with its subsections read as follows:
         R301.2.2.11 Alternative compliance method for structural requirements. In addition to meeting all the structural requirements for Seismic Design Category C and sections R301.2.2.1 through R301.2.2.7, except as modified by this amendment, an alternative compliance method for meeting structural requirements when wood framing is used shall include compliance with the following items. In the event any requirement in this section differs from wind code structural requirements, the more stringent will apply. The alternative compliance method is allowable only when the total wall opening area does not exceed 30 percent of wall area along each of the four main exterior walls, not including exterior walls containing a garage door opening.
            1.   A minimum of two 24" prefabricated shear panels may be installed in any one exterior wall with openings that exceed the 30 percent requirement and still be considered in compliance with the amendment conditions.
         Exception: Section R301.2.2.11, Alternative compliance method for structural requirements, shall not be used for additions not structurally independent of the existing structure.
         R301.2.2.11.1 Anchorage exterior walls (Sole Plates). Exterior wall sole plates shall be secured to the foundation or framing below by one of the following methods:
            1.   Foundation: 1/2 inch (12.7 mm) anchor bolts, with minimum .229 inch by 3 inch by 3 inch (5.8 mm by 76 mm by 76 mm) washers, embedded in the foundation a minimum of 7 inches (178 mm). Such anchor bolts are to be placed 4 feet on center maximum and within 12 inches (305 mm) of the end of each plate section. A minimum of two anchors per plate section is required.
            2.   Foundation: Pre-fabricated mudsill anchors l(ex. FA3 or MASA) embedded in the foundation and placed at 4 feet (1219 mm) on center maximum and within 12 inches (305 mm) of the end of each plate section. A minimum of two anchors per plate section is required.
            3.   Elevated Floors: 10d nails placed at 8 inches on center and embedded in a continuous rim board. Rim board depth to match depth of floor framing. Rim board shall be nailed to the end of each floor framing member with three 10d nails. Where floor framing parallels exterior wall, double rim boards shall be provided and nailed per Table R602.3 (1). The Rim board shall be fastened to the wall top plate with metal connector plates at 6 feet (1829 mm) on center; installed plate shall provide a minimum vertical and horizontal capacity of 440 pounds minimum.
         R301.2.2.11.2 Anchorage of all interior structural walls (Sole Plates). Interior structural walls shall be secured by one of the following methods:
            1.   Foundation: 1/2 inch (12.7mm) anchor bolts, with minimum .229 inch by 3 inch by 3 inch (5.8 mm by 76 mm by 76 mm) plate washers, embedded a minimum of 7 inches (178 mm) in a continuous footing (sized per Table R403.1(l) at 4 feet (1219 mm) on center maximum and within 12 inches (305mm) of the end of each plate section. A minimum of two anchors per plate section is required.
            2.   Foundation: By powder actuated fasteners that provide 210 pounds per linear foot shear capacity, placed 2 feet (610 mm) on center maximum and within 12 inches (305 mm) of each plate section or equivalent means of anchorage. A minimum of two anchors are required per plate section.
            3.   Elevated Floors: 10d nails placed at 8 inches (204 mm) on center and embedded in one of the following:
               (a)   Structural wall top plate flush with bottom of floor sheathing, or
               (b)   Floor joist parallel with and directly below plate, or
               (c)   Blocking, depth to match, placed between floor joists and running the full length of the plate. Blocking to be nailed per Table R602.3(l).
         R301.2.2.11.3 Stud spacing - Exterior walls. All 2x4 exterior walls shall be a maximum of 16 inch (406 mm) center to center stud spacing up to 3 stories. Gypcrete flooring or similar cementitious leveling products shall not be used on elevated floors.
         Exception: Thin-set or other base material required for installation of flooring products in isolated confined spaces such as bathrooms.
         R301.2.2.11.4 Wall sheathing.
         R301.2.2.11.4.1 Exterior wall sheathing. Exterior walls shall be continuously sheathed with a minimum of 7/16 inch (11mm) exterior rated OSB or plywood. Sheathing is to be fastened every 6 inches (152 mm) on the edges and 12 inches (305 mm) at intermediate supports with minimum 8d common nails.
         R301.1.2.2.11.4.2 Interior wall sheathing. Interior walls shall have sheathing on both sides. Sheathing shall be a minimum of 1/2 inch (12.7 mm) gypsum board with fasteners spaced at a maximum of 7 inches (178 mm), on edges and 7 inches (178 mm) at intermediate supports. Minimum fastener size shall be 5d cooler or wallboard nails or 1 and 1/4" #6 Type S or W screws.
         R301.2.2.11.5 Garage door openings. Brace wall panels are required for garage openings as per Section R602.10.6 of this Code.
         Exception - An engineered pre-manufactured wall panel is allowed to be used at garage openings.
         R301.2.2.11.6 Connections across floor joist space. A minimum 36" long by 1 and 1/4" wide by 18 gauge (1219 mm by 31.75 mm by 1.31 mm) galvanized steel coil strap 1(ex. RS200 or CS18) installed at 4 feet (1219 mm) on center across floor joist space or equivalent is required on all exterior walls and stacked interior structural walls. Straps shall run vertical along the edge of studs and shall be centered on floor joist space. Studs shall be vertically aligned.
         R301.2.2.11.7 Roof framing connections. Roof framing members shall be attached to wall top plates with 18 gauge galvanized steel clips (ex. RT7A or H2.5A) or equivalent spaced not more than 4 feet (1219 mm) on center. Provide clips in addition to the fastening requirements in Table R602.3(1). This requirement applies to all contact points with structural walls. In the event wind fastening requirements differ, the more stringent shall apply.
         R301.2.2.11.8 Braced wall hold-downs.
            1.   Exterior walls: A single hold-down shall be installed at each end of each wall over 8 feet (2438 mm) in length (two hold-downs per wall length). Hold-down capacity (P), in pounds, shall be equal to 210 lbs/ft times wall height (P = 210 * H)
            2.   Wall height (H): distance from wall bottom plate to wall top plate.
            3.   A cut sheet of the hold-down type(s) used shall be provided to code enforcement when requested by the Building Official. Cut sheet shall show tested product load rating and manufacturer information.
         R301.2.2.11.9 Opening straps/clips. This section applies only to window and door openings located in exterior walls and interior structural walls. Louver, pipe penetrations, dryer vents, and all other wall openings are not required to meet this section unless they exceed 4 sq. ft. in area.
            1.   Studs above and below headers and window sill plates: Provide 18 gauge galvanized steel clips l (ex. RT7A or H2.5A) or equivalent at 32 inches (813 mm), top and bottom of studs, minimum two clips per opening width at headers and sills.
            2.   Headers: Headers shall bear on a minimum 2x jack post and be fastened to the post with minimum 18 gauge galvanized steel clips l(ex. RT7A or H2.5A), or continuous sheathing from king post to header or sill.
            3.   Window Sill plate: Sill plate shall be end nailed with three 10d nails each end through a minimum 2x king/jack posts, or continuous sheathing from king post to header or sill, or equivalent.
            4.   King/Jack posts: Provide 20 gauge galvanized steel stud plate connector (ex. SPT22 or SP1) or equivalent from post to wall plate, top and bottom. King and jack posts shall be nailed together with 10d nails at 8 inches (204 mm) on center staggered full height.
         R301.2.2.11.10 Brick veneer.
            1.   Exterior brick veneer shall not exceed 25 feet (7620 mm) in height above non-combustible foundation. Brick at gable peaks shall not exceed 40 feet (12192 mm) in height above non-combustible foundation.
            2.   Exterior brick veneer shall comply with all other applicable Chapter 7 IRC requirements.
            3.   Interior brick veneer and masonry chimneys shall comply with Chapter 7 IRC requirements.
         R301.2.2.11.11 Floor openings. When floor openings in the second or third floors exceed 15 percent of the ground floor square footage, garage space excluded, they shall be considered as large floor openings.
            1.   The gross floor area shall be the area bounded by exterior walls.
            2.   Openings for stairs and egress are excluded from the net floor opening area.
            3.   Perimeter interior walls bounding a large floor opening shall be considered structural walls and shall be subject to all requirements as such. If perimeter walls are not present below opening perimeter (i.e. beam and column system is used), the supporting structures shall be engineered.
      (14)   Amend Section R313.1 "Townhouse automatic fire sprinkler systems" and add exception #2 so when amended it reads as follows:
         R313.1 Townhouse Automatic Fire Sprinkler Systems. An automatic residential fire sprinkler system complying with NFPA 13 shall be installed in townhouses.
         Exceptions:
            1.   An automatic residential fire sprinkler system shall not be required where additions or alterations are made to existing townhouses that do not have an automatic residential fire sprinkler installed.
            2.   An automatic residential fire sprinkler system complying with NFPA 13-D may be installed in townhouses less than 4 stories.
      (15)   Amend Section R313.2 "One- and two-family dwellings automatic fire sprinkler systems" so when amended it reads as follows:
         R313.2 One- and two-family dwelling automatic fire sprinkler system: An automatic residential fire sprinkler system shall be installed in one- and two-family dwellings with a finished floor area (excluding garages) of 5500 square feet or greater.
         Exception: An automatic residential fire sprinkler system shall not be required where additions or alterations are made to existing buildings that do not have an automatic residential fire sprinkler installed.
         R313.2.1 One- and two-family dwelling located more than 300 feet from the nearest point of public access: An automatic fire sprinkler system shall be installed in one- and two-family dwellings which exceed 2000 square feet (excluding garages) and have driveways or private access roads which exceed 300 feet in length.
      (16)   Amend Section R401.3 "Drainage" so when amended it reads as follows:
         R401.3 Surface drainage shall be diverted to a storm sewer conveyance or other approved point of collection that does not create a hazard. Lots shall be graded to drain surface water away from foundation walls. The finish floor elevation, except for basements, shall be a minimum of 10 inches above the exterior finish ground. The grade away from the foundation walls shall fall a minimum of 6 inches within the first 10 feet.
         Exception: Where lot lines, walls, slopes or other physical barriers prohibit 6 inches of fall within 10 feet, drains, or swales shall be provided to ensure drainage away from the structure.
      (17)   Delete Chapter 11 "Energy Efficiency" in its entirety and replace with the following:
            Residential energy efficiency requirements shall be designed and constructed per the 2018 International Energy Conservation Code as amended by the Town of Collierville.
      (18)   Amend Section MI305.1.2 "Appliances in attics" by adding new section as follows:
            1305.1.2.2 Access to mechanical equipment located in the attic of one and two family dwelling units shall be provided by permanent stairs or pull down stairs if access is provided from the floor below.
      (19)   Amend Section M1411.3 "Condensate disposal" by adding the following sentence to the end of the paragraph:
            Units shall drain to a sanitary sewer drain through an indirect waste located within two feet of the equipment, or to an approved French drain which extends two feet below grade and provides 8 cubic feet of drain material for a unit three tons (10.6 kW) nominal capacity or less or sixteen cubic feet of drain material for a unit larger than three tons.
      (20)   Amend Section P2801.6.1 "Pan size and drain" by increasing the size of the drain pipe 3/4 inch to 1 inch so when amended it reads as follows:
            The pan shall be drained by an indirect waste pipe of not less than 1 inch (25.4 mm) diameter.
      (21)   Delete Section P2902.5.3 "Lawn irrigation systems" in its entirety and replace with the following:
            P2902.5.3 Lawn Irrigation Systems: The reduced pressure, backflow preventer and all components shall be installed to meet the following conditions:
               1.   A valve shall be placed within close proximity of the water meter if a separate meter is not installed solely for the irrigation system.
               2.   A minimum of schedule 40 service pipe shall be installed from the meter to the backflow preventer.
               3.   The schedule 40 service pipe shall be buried at a minimum depth of 12 inches.
               4.   There shall be a minimum of 12 inches of gravel at the bottom of the backflow preventer.
               5.   Each backflow preventer shall be tested and certified by the State of Tennessee to test such devices. This test shall be on site at the time of inspection.
      (22)   Amend Section P2903.7 "Size of water-service mains, branch mains and risers" by increasing the water service pipe size from 3/4 inch to 1 inch so when amended it reads as follows:
         The size of the water service pipe shall be not less than 1 inch (25.4 mm) diameter.
      (23)   Amend Tables P2906.4 "Water Service Pipe" and 2906.5 "Water Distribution Pipe" by deleting the references to Type M with Type L copper alloy tubing:
TABLE P2906.4
Water Service Pipe
MATERIAL
STANDARD
MATERIAL
STANDARD
Acrylotritrile butadiene styrene (ABS) plastic pipe
ASTM D 1527; ASTM D 2282
Chlorinated polyvinyl chloride (CPVC) plastic pipe
ASTM D 2846; ASTM F 442; CSA B137.6
Chlorinated polyvinyl chloride/aluminum/chlorinated polyvinyl chloride (CPVC/AL/CPVC) plastic pipe
ASTM F 2855
Copper or copper-alloy pipe
ASTM B 42; ASTM B 43; ASTN B 302
Copper or copper-alloy tubing (Type K, WK, WL, or WM)
ASTM B 75; ASTM B 88; ASTM B 251; ASTM B 447
Cross-linked polyethylene/aluminum/cross-1 inked polyethylene (PEX-AL-PEX) pipe
ASTM F 1281; ASTM F 2262; CSA B137.10
Cross-linked polyethylene/aluminum/high-density polyethylene (PEX-AL-HDPE) pipe
ASTM F 1986
Cross-linked polyethylene (PEX) plastic tubing
ASTM F 876; AWWA C904; CSA B137.5
Ductile iron water pipe
AWWA CI 15/A21.15; AWWA C151/A21.51
Galvanized steel pipe
ASTM A 53
Polyethylene/aluminum/polyethylene (PE-AL-PE) pipe
ASTM F 1282; CSA B137.9
Polyethylene (PE) plastic pipe
ASTM D 2104; ASTM D 2239; AWWA C901;CSA B 137.1
Polyethylene (PE) plastic tubing
ASTM D 2737; AWWA C901; CSA B137.1
Polyethylene of raised temperature (PE-RT) plastic tubing
ASTM F 2769; CSA B137.18
Polypropylene (PP) plastic tubing
ASTM F 2389; CSA B137.11
Polyvinyl chloride (PVC) plastic pipe
ASTMD 1785; ASTM D 2241; ASTM D 2672; CSA B137.3
Stainless steel (Type 304/304L) pipe
ASTM A 312; ASTM A 778
Stainless steel (Type 316/316L) pipe
ASTM A 312; ASTM A 778
 
TABLE P2906.5
WATER DISTRIBUTION PIPE
MATERIAL
STANDARD
MATERIAL
STANDARD
Chlorinated polyvinyl chloride (CPVC) plastic pipe and tubing
ASTM D 2846; ASTM F 441; ASTM F 442; CSA B137.6
Chlorinated polyvinyl chloride/aluminum/chlorinated polyvinyl chloride (CPVC/AL/CPVC) plastic pipe
ASTM F 2855
Copper or copper-alloy pipe
ASTM B 42; ASTM B 43; ASTM B 302
Copper or copper-alloy tubing (Type K, WK, WL or WM)
ASTM B 75; ASTM B 88; ASTM B 251; ASTM B 447
Cross-linked polyethylene (PEX) plastic tubing
ASTM F 876; CSA B137.5
Cross-linked polyethylene/aluminum/cross-linked polyethylene (PEX-AL-PEX) pipe
ASTM F 1281; ASTM F 2262; CSA B137.10
Cross-linked polyethylene/aluminum/high-density polyethylene (PEX-AL-HDPE) pipe
ASTM F 1986
Galvanized steel pipe
ASTM A 53
Polyethylene/aluminum/polyethylene (PE-AL-PE) composite pipe
ASTM F 1282
Polyethylene of raised temperature (PE-RT) plastic tubing
ASTM F 2769; CSA B137.18
Polypropylene (PP) plastic pipe or tubing
ASTM F 2389; CSA B137.11
Stainless steel (Type 304/304L) pipe
ASTM A 312; ASTM A 778
 
      (24)   Amend Section 2906.6 "Fittings" by adding the following subsection:
         2906.6.2 Water Distribution fittings shall not be placed under slab installations unless prior approval is made with the Code Official.
      (25)   Amend Tables P3002.1(1) "Above-Ground Drainage and Vent Pipe" and P3002.1(2) "Underground Building Drainage and Vent Pipe" by adding the following footnote to both tables:
         a.   Type M and Type DWV Copper Tube and Copper Pipe are not allowed for drain and waste material.
      (26)   Amend Table 3004.1 "Drainage Fixture Unit (d.f.u.) Values for Various Plumbing Fixtures" by adding the following footnote d.:
         d.   For showers with two or more shower valves, the drain and strainer shall be increased from 2 inch to 3 inch or additional drains shall be provided.
      (27)   Amend Section P3113.1 "Size of vents" by adding the following section:
         P3113.1.1 A minimum 2 inch (50.8 mm) diameter main vent is required on all installations.
      (28)   Amend Table 3201.7 "Size of Traps for Plumbing Fixtures" by replacing the smallest trap size (1 1/2 inches) in showers with 2 inches so when amended it reads as follows:
Table P3201.7
Size of Traps for Plumbing Fixtures
Plumbing Fixture
Trap Size (Minimum)
Plumbing Fixture
Trap Size (Minimum)
Bathtub (with or without showerhead and/or whirlpool attachments)
1 1/2
Bidet
1 1/4
Clothes washer standpipe
2
Dishwasher (on separate trap)
1 1/2
Floor drain
2
Kitchen sink (one or two traps, with or without dishwasher and food waste disposer)
1 1/2
Laundry tub (one or more compartments)
1 1/2
Lavatory
1 1/4
Shower (based on the total flow rate through showerheads and body sprays)
Flow rate:
5.7 gpm and less
2
More than 5.7 gpm up to 12.3 gpm
2
More than 12.3 gpm up to 25.8 gpm
3
More than 25.8 gpm up to 55.6 gpm
4
For SI: 1 inch=25.4mm
 
      (29)   Delete Chapters 34 through 43 in its entirety and replace with the following:
         One- and Two-Family dwelling electrical wiring shall be installed in compliance with and according to NFPA 70, 2017 National Electrical Code with Town of Collierville amendments.
(Ord. 2020-06, passed 9-14-20)