[Ord. No. 11-0248 §1(Art. VIII §1), 8-9-2011; Ord. No. 15-0244 § 1, 4-30-2015; Ord. No. 18-0499, 12-10-2018[1]]
A.
The International Plumbing Code, 2015 Edition, is hereby amended
as follows:
1.
101.1. Delete and insert in lieu thereof the following: Title.
These regulations shall be known as the "Plumbing Code of Jefferson
County, Missouri," hereinafter referred to as "this code."
2.
106.3.1. Delete and insert in lieu thereof the following: Construction
Documents. Construction documents, engineering calculations, diagrams
and other such data shall be submitted in two (2) or more sets with
each application and permit. The Code Official may require construction
documents, computations and specifications to be prepared and designed
by a registered design professional. Construction documents shall
be drawn to scale and shall be of sufficient clarity to indicate the
location, nature and extent of the work proposed and show in detail
that the work conforms to the provisions of this code. Construction
documents for buildings more than two (2) stories in height shall
indicate where penetrations will be made for pipes, fittings and components
and shall indicate the materials and methods for maintaining required
structural safety, fire-resistant rating and fire blocking.
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Exception: The Code Official shall have the authority to waive
the submission of construction documents, calculations or other data
if the nature of the work applied for is such that reviewing of construction
documents is not necessary to determine compliance with this code.
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13.
305.3. Delete and insert in lieu thereof the following: Pipes
through foundation walls. A pipe that passes through a foundation
wall shall be provided with a relieving arch, or a pipe sleeve shall
be built into the foundation wall.
14.
305.4.1. Delete and insert in lieu thereof the following: Sewer
Depth. Building sewers that connect to private sewage disposal systems
shall be installed not less than eighteen (18) inches below finished
grade at the point of septic tank connection. Building sewers shall
be installed no less than eighteen (18) inches below grade.
15.
312.9. Delete entire section.
16.
406.2. Delete and insert in lieu thereof the following: Waste
connection. The waste from an automatic clothes washer shall discharge
through an air break into a standpipe in accordance with Section 802.4
or into a laundry sink. The trap and fixture drain for an automatic
clothes washer standpipe shall be no less than two (2) inches in diameter.
The fixture drain for the standpipe serving an automatic clothes washer
shall connect to a two-inch or larger diameter fixture branch or stack.
Automatic clothes washers that discharge by gravity shall be permitted
to drain to a waste receptor or an approved trench drain.
17.
412.3.1. Insert the following new section: Floor Drains. A minimum
of one (1) floor drain shall be required for all residential structures
with basements.
18.
406.2. Delete and insert in lieu thereof the following: Shower
waste outlet. Waste outlets serving showers shall be no less than
two (2) inches in diameter and, for other than waste outlets in bathtubs,
shall have removable strainers no less than three (3) inches in diameter
with strainer openings one-fourth (1/4) inch in least dimension. Where
each shower space is not provided with an individual waste outlet,
the waste outlet shall be located and the floor pitched so that waste
from one (1) shower does not flow over the floor areas serving another
shower. Waste outlets shall be fastened to the waste pipe in an approved
manner.
19.
603.2. Delete and insert in lieu thereof the following: Separation
of water service and building sewer. Where water service piping is
located in the same trench with the building sewer, such sewer shall
be constructed of materials listed in Table 702.2. Where the building
sewer piping is not constructed of materials listed in Table 702.2,
the water and service pipe and the building sewer shall be horizontally
separated by not less than ten (10) feet of undisturbed or compacted
earth. The required separation distance shall not apply where a water
service pipe crosses a sewer pipe, provided the water service is sleeved
to a point not less than five (5) feet horizontally from the sewer
pipe center line on both sides of such crossing. The sleeve shall
be of pipe materials listed in Table 605.3, 702.2 or 702.3. The required
separation distance shall not apply where the bottom of the water
service pipe, located within five (5) feet of the sewer, is not less
than twelve (12) inches above the highest point of the top of the
building sewer.
20.
Table 605.3. Delete "Type M" and "Type WM."
21.
607.3.1. Insert the following new section: Expansion tanks.
Any system with a new or a replacement water heating apparatus shall
be provided with an approved, listed and adequately sized thermal
expansion device (expansion tank), installed within ten (10) feet
of and on the cold water supply to the water heater. The tank may
be installed in a vertical up, vertical down, or horizontal position
in accordance with the manufacturer's recommendation.
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Exception:
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1.
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Listed non-storage instantaneous heaters having an inside diameter
of not more than three (3) inches.
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2.
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Water heaters, thirty (30) gallons or less, installed under
counter or in confined spaces in multi-family units, may use adequately
sized mechanical water hammer arrestors to provide for thermal expansion
with the approval of the authority having jurisdiction or his/her
representative.
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3.
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One- and two-family residences served by private well.
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22.
608.13. Delete entire section.
23.
608.14. Delete entire section.
24.
701.2. Delete and insert in lieu thereof the following: Sewer required. Buildings in which plumbing fixtures are installed and premises having drainage piping shall be connected to a public sewer if within four hundred (400) feet of the structure's property line except as set forth in Section 705.020(D) of the On-Site Sewage Treatment Code of Jefferson County.
25.
703.7. Insert the following new section: Minimum size building
sewers. The gravity building sewer shall not be less than four (4)
inches in size.
26.
705.11.2. Delete the word "purple" in this Section and anywhere
referenced when associated with the word "primer" where it appears
in the 2015 International Plumbing Code.
27.
708.1.12. Insert the following new section: Base of stack. A
cleanout shall be provided at the base of each waste or soil stack
a minimum of thirty-six (36) inches from the finished floor.
28.
Table 710.1(1). Insert the following new footnotes:
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b.
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The minimum size of the main building drain shall be four (4)
inches.
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c.
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The maximum developed length of underground two-inch-diameter
pipe shall be twenty (20) feet.
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29.
901.7. Insert the following new section: Stack required. Every
building in which plumbing is installed shall have at least one (1)
stack the size of which is not less than seventy-five percent (75%)
of the required size of the building drain. Such stack shall run undiminished
in size.
30.
903.1. Delete and insert in lieu thereof the following: Roof
extension. Open-vent pipes that extend through a roof shall be terminated
not less than twelve (12) inches above the roof. Where a roof is to
be used for assembly or as a promenade, observation deck, sunbathing
deck or similar purposes, open-vent pipes shall terminate not less
than seven (7) feet above the roof.
31.
903.2. Delete and insert in lieu thereof the following: Frost
closure. Where the 97.5-percentvalue for outside design temperature
is zero degree Fahrenheit (0° F.) (-18° C.) or less, vent
extensions through a roof or wall shall be not less than two (2) inches
in diameter. Any increase in the size of the vent shall be made not
less than one (1) foot inside the thermal envelope of the building.
32.
Chapter 12. Delete entire chapter.
33.
The 2015 IPSDC is specifically not adopted and shall not apply.
