Public Works Committee
Amendment
August 20, 2001
IN THE COUNTY LEGISLATURE OF JACKSON COUNTY, MISSOURI
Title
AN ORDINANCE repealing sections 5400. and 5401. Jackson County Code, 1984, relating to the building code, and enacting, in lieu thereof, one new section relating to the same subject, with an effective date.
Intro
ORDINANCE #3170, August 13, 2001
INTRODUCED BY Victor E. Callahan, County Legislator
Body
WHEREAS, since the 1992 adoption of the County's building code, found in chapter 54 of the Jackson County Code, several of the uniform or national codes adopted by reference as the County's code have been supplemented or updated; and,
WHEREAS, it is appropriate that the County's building code be updated to reference the most current editions of these uniform and national codes; and,
WHEREAS, the revision of the building code to this effect is in the best interests of the health, welfare, and safety of the citizens of Jackson County; now therefore,
BE IT ORDAINED by the County Legislature of Jackson County, Missouri, as follows:
Section A. Enacting Clause. Sections 5400. and 5401., Jackson County Code, 1984, are hereby repealed, and one new section enacted in lieu thereof, to be known as §5400., to read as follows:
5400. Building Code.
Certain documents, copies of which are on file and are open for inspection by the public in the offices of the director of public works and clerk of the county legislature, being marked and designated as:
Uniform Building Code, [1991] 1997 edition, published by the International Conference of Building Officials, [including the generic fire_resistive assemblies listed in the Fire Resistance Design Manual, Twelfth Edition, dated August, 1988, published by the Gypsum Association as referenced in Tables Nos. 43_A, 43_B, and 43_C of the specified Uniform Building Code, including Appendix Chapters as follows:
1 Life_Safety Requirements for Existing Buildings;
7 Aviation Control Towers;
10 Detention and Correctional Facilities;
11 Agricultural Buildings;
12 Regulations for Group R Division 3 Occupancies;
23 Flood Resistant Construction;
24 Prescriptive Masonry High Wind Areas;
25 Light Frame High Wind Area;
26 Protection of Residential Concrete Exposed to Freeze/Thaw;
29 Waterproofing and Dampproofing Foundations;
31 Site Accessibility;
32 Reroofing;
35 Sound Transmission Control;
38 Basement Pipe Inlets;
49 Patio Covers;
51 Elevators, Dumbwaiters, Escalators, and Moving Walks;
See ANSI/ASME A17.1, 1984, Safety Code for Elevators and Escalators, including Supplements A17.1a_1985, A17.1b_1985, A17.1c_1986, A17.1d_1986, and A17.1e_1987, published by the American Society of Mechanical Engineers. Copies of this code are also on file in the offices of the director of public works and clerk of the county legislature;
53 Energy Conservation in New Building Construction;
55 Membrane Structures;
57 Regulations Governing Fallout Shelters; and
70 Excavation and Grading.] and
Uniform Building Code Standards, [1991] 1997 Edition, published by the International Conference of Building Officials, [including (i) Structural Welding Code_Reinforcing Steel, AWS D1.4_79 (U.B.C. Standard No. 26_8); (ii) Structural Welding Code_Steel, ANSI/AWS D1.1_90 (U.B.C. Standard No. 27_6); (iii) Structural Welding Code_Sheet Steel, ANSI/AWS D1.3_81 (U.B.C. Standard No. 27_13), published by the American Welding Society, Inc.; and (iv) Standard for buildings and Facilities_Providing Accessibility and Usability for Physically Handicapped People, A117.1_1986 (U.B.C. Standard No. 31_1), published by the American National Standards Institute,] as modified or amended in the Uniform Building Code Standards referenced below:
[1988] 2000 Uniform Plumbing Code;
[1990] 1999 National Electrical Code;
[1991] 2000 Uniform Fire Code;
[1991] 2000 Uniform Mechanical Code;
[1991] 1997 Uniform Housing Code;
[1991] 1997 Uniform Code for the Abatement of Dangerous Buildings;
[1991] 1997 Uniform Sign Code;
[1991] 1997 Uniform Security Code; and
[1991] 1997 Uniform Code for Building Conservation[[; and
[1991] 1995 Uniform CABO One and Two Family Dwelling Code]] [; and
1991 Uniform Disaster Mitigation Plan],
as said publications may be amended, are adopted as the code of Jackson County for regulating the erection, construction, occupancy, equipment, use, height, area and maintenance of all buildings or structures in the unincorporated area of Jackson County[, except as provided in section 5401. of this chapter]. Each and all of the regulations, provisions, conditions, and terms of such Uniform Building Code, [1991] 1997 Edition, and Uniform Building Code Standards, [1991] 1997 Edition, published by the International Conference of Building Officials, and the secondary publications referenced above, as said publications may be amended, all of which are on file in the offices of the director of public works and clerk of the county legislature, are referred to, adopted, and made a part hereof as if fully set out in this section.
5401. [ Exceptions to Uniform Building Code and Related Codes.
The following sections of the Uniform Building Code and Related Codes are modified in the following respects:
1991 UNIFORM BUILDING CODE
Access and Exit Facilities and Emergency Escapes
Section 1204. Exits shall be provided as specified in Chapter 33. (See also Section 3317 for special requirements and Section 3314 for exit markings.)
Access to, and egress from, buildings required to be accessible shall be provided as specified in Chapter 31.
Every sleeping room below the fourth story shall have at least one operable window or door approved for emergency escape or rescue which shall open directly into a public street, public alley, yard or exit court. The units shall be operable from the inside to provide a full clear opening without the use of separate tools.
All escape or rescue windows shall have a minimum net clear openable area of 5.7 square feet. The minimum net clear openable height dimension shall be 24 inches. The minimum net clear openable width dimension shall be 20 inches. When windows are provided as a means of escape or rescue they shall have a finished sill height not more than 44 inches above the floor.
Bars, grilles, grates or similar devices may be installed on emergency escape or rescue windows or doors, provided:
1. The devices are equipped with approved release mechanisms which are openable from the inside without the use of a key or special knowledge or effort; and
2. The building is equipped with smoke detectors installed in accordance with Section 1210.
Section 1210.
4. Location within dwelling units. In dwelling units a detector shall be installed in each sleeping room and mounted on the ceiling or wall at a point centrally located in the corridor or area giving access to each separate sleeping area. When the dwelling unit has more than one story and in dwellings with basements, a detector shall be installed on each story and in the basement. In dwelling units where a story or basement is split into two or more levels, the smoke detector shall be installed on the upper level, except that when the lower level contains a sleeping area, a detector shall be installed on each level. When sleeping rooms are on an upper level, the detector shall be placed at the ceiling of the upper level in close proximity to the stairway. In dwelling units where the ceiling height of a room open to the hallway serving the bedrooms exceeds that of the hallway by 24 inches or more, smoke detector shall be installed in the hallway and in the adjacent room. Detectors shall sound an alarm audible in all sleeping areas of the dwelling unit in which they are located.
Section 3704(c)
(c) Reinforcing and Seismic Anchorage. Unless a specific design is provided, every masonry or concrete chimney in Seismic Zones Nos. 3 and 4 shall be reinforced with not less than four No. 4 steel reinforcing bars conforming to the provisions of Chapter 24 or 26 of this code. The bars shall extend the full height of the chimney and shall be spliced in accordance with the applicable requirements of Chapters 24 and 26. In masonry chimneys the vertical bars shall have a minimum cover of ½ inch of grout or mortar tempered to a pouring consistency. The bars shall be tied horizontally at 18_inch intervals with not less than 1/4_inch_diameter steel ties. The slope of the inclined portion of the offset in vertical bars shall not exceed 1 inch horizontal in 2 inches vertical. Two ties shall also be placed at each bend in vertical bars. Where the width of the chimney exceeds 40 inches, two additional No. 4 vertical bars shall be provided for each additional flue incorporated in the chimney or for each additional 40 inches in width or fraction thereof.
In Seismic Zones Nos. 3 and 4, all masonry and concrete chimneys shall be anchored at each floor or ceiling line more than 6 feet above grade, except when constructed completely within the exterior walls of the building. Anchorage shall consist to two 3/16_inch by 1_inch steel straps cast at least 12 inches into the chimney with a 180_degree bend with a 6_inch extension around the vertical reinforcing bars in the outer face of the chimney.
Each strap shall be fastened to the structural framework of the building with two ½_inch_diameter bolts per strap. Where the joists do not head into the chimney, the anchor strap shall be connected to 2_inch by 4_inch ties crossing a minimum of four joists. The ties shall be connected to each joist with two 16d nails. As an alternative to the 2_inch by 4_inch ties, each anchor strap shall be connected to the structural framework by two ½_inch_diameter bolts in an approved manner. Metal chimneys shall be anchored at each joist with two 1 ½_inch by 1/8_inch metal straps looped around the outside of the chimney installations and nailed with six 8d nails per strap to the roof or ceiling framing.
1990 NATIONAL ELECTRICAL CODE
210.8. Ground_Fault Circuit_Interrupter Protection for Personnel.
(a) Dwelling Units.
(1) All 125_volt, single_phase, 15_ and 20_ampere receptacles installed in bathrooms shall have ground_fault circuit_interrupter protection for personnel.
(2) All 125_volt, single_phase, 15_ and 20_ampere receptacles installed in garages shall have ground_fault circuit_interrupter protection for personnel.
Exception No. 1 to (a)(2): Receptacles which are not readily accessible.
Exception No. 2 to (a)(2): Receptacles for appliances occupying dedicated space which are cord_ and plug_connected in accordance with Section 400_7 (a)(7), or (a)(8).
Receptacles installed under Exceptions to Section 210_8(a)(2) shall not be considered as meeting the requirements of Section 210_52(1).
(3) All 125_volt, single_phase, 15_ and 20_ampere receptacles installed outdoors where there is direct grade level access to the dwelling unit and to the receptacles shall have ground_fault circuit_interrupter protection for personnel.
(FPN): See Section 215_9 for feeder protection/
For the purposes of this section, "direct grade level access" is defined as being located not more than 6 feet, 6 inches (1.98 m) above grade level and being readily accessible without entering or passing through a dwelling unit.
(4) At least one 125_volt, single_phase, 15_ or 20_ampere receptacle installed in a basement shall have ground_fault circuit_interrupter protection for personnel and it shall be so identified.
(5) All 125_volt, single_phase, 15_ or 20_ampere receptacles required by Section 210_52(b) installed within 6 feet (1.83 m) of the kitchen sink above counter top surfaces shall have ground_fault circuit_interrupter protection for personnel excluding receptacles on peninsulas and islands.
(FPN): The intent of this section is to permit the exemption of receptacles which are located specifically for appliances such as refrigerators and freezers from ground_fault circuit_interrupter protection for personnel.
(6) All 125_volt, single_phase, 15_ or 20_ampere receptacles installed in boathouses shall have ground_fault circuit_interrupter protection for personnel.
(b) Hotels and Motels. All 125_volt, single_phase, 15_ and 20_ampere receptacles installed in bathrooms of guest rooms in hotels and motels shall have ground_fault circuit_interrupter protection for personnel.
1991 UNIFORM MECHANICAL CODE
Fire Dampers
Sec. 1006.(a) Cross References. See U.B.C. Standard No. 43_7 and Chapter 43 of the Building Code for the construction and installation of duct openings in walls and ceilings. U.B.C. Standard No. 43_7 is reprinted in Appendix A. Fire dampers shall not be located in a combustion_air duct or opening: see Uniform Mechanical Code Section 602(b).
(b) Access Openings. Suitable openings with tightly fitted covers shall be provided to make fire dampers accessible for inspection and shall be large enough to permit maintenance and resetting of the damper. When a fire damper is installed in an air duct, a tight_fitting hinged or sliding access door shall be provided on the duct and the door shall comply with all of the following requirements:
1. The door shall be constructed of metal which is equal to or greater in thickness than the duct and of the same material.
2. Each access door shall have a label with letters not less than ½ inch in height reading "FIRE DAMPER."
3. External duct insulation may conceal a fire damper access door when there is a label attached to the insulation indicating the exact location of the door.
(c) Freedom from Interference. Fire dampers shall be installed in a manner to ensure positive closing. Interior insulation and acoustical linings shall be placed so as not to interfere with positive closing of the fire damper.
(d) Temperature Classification of Fusible Links. Fusible links shall be classified in accordance with U.M.C. Standard No. 10_4. Fusible link_actuated fire dampers shall be equipped with listed fusible links having 165oF. temperature classification and listed to sustain the design load.
EXCEPTIONS: 1. Fire dampers serving duct openings in a warm_air furnace room or enclosure may be equipped with links having a high_temperature classification.
2. Fusible links with a temperature rating classification higher than ordinary may be used in locations approved by the building official.
(e) Connection. Ductwork shall be connected to fire damper sleeves or assemblies in such a way that collapse of the ductwork will not dislodge the damper.
Material
Sec. 1002. (a) General. Supply air, return air and outside air for heating, cooling or evaporative cooling systems shall be conducted through duct systems constructed of metal as set forth in Tables Nos. 10_A, 10_B and 10_C; metal ducts complying with U.M.C. Standard No. 10_2 with prior approval; or factory_made air ducts complying with U.M.C. Standard No. 10_1. Ducts, plenums and fittings may be constructed of asbestos cement, concrete, clay or ceramics when installed in the ground or in a concrete slab, provided the joints are tightly sealed.
Corridors shall not be used to convey air to or from rooms if the corridor is required to be of the fire_resistive construction by Section 3305 of the Building Code.
Concealed building space or independent construction within buildings may be used as ducts or plenums.
When gypsum products are exposed in ducts or plenums, the air temperature shall be restricted to a range from 50oF to 125oF, and moisture content shall be controlled so that the material is not adversely affected. Gypsum products shall not be exposed in ducts serving evaporative coolers.
Venting systems and exhaust ducts shall not extend into or through ducts or plenums.
(b) Combustibles within Ducts or Plenums. Materials exposed within ducts or plenums shall have a flame_spread index of not more than 25 and a smoke_developed rating of not more than 50 when tested in accordance with the test for Surface Burning Characteristics of Building Materials, U.B.C. Standard No. 42_1.
EXCEPTIONS: 1. Return_air and outside_air ducts, plenums or concealed spaces which serve a dwelling unit may be of combustible construction.
2. Air filters serving a dwelling unit.
3. Air filters listed by an approved testing agency as complying with reference standards included in Appendix C.
4. Air filters used as water evaporation medium in an evaporative cooler.
5. Charcoal filters when protected with an approved fire suppression system.
6. Electrical wiring in plenums shall comply with the Electrical Code. Flame propagation and smoke production characteristics of exposed electric cables installed in concealed space used as air plenums shall:
A. Exhibit a flame travel of 5 feet or less, and
B. Produce smoke having n average optical density not greater than 0.15 and having a peak optical density of 0.5 or less when tested in accordance with U.M.C. Standard No. 10_3.
C. Wiring meeting these requirements shall be listed and labeled as plenum cable as required by the Electrical Code.
7. Nonmetallic fire sprinkler piping in plenums shall be listed and shall meet the following requirements:
A. Exhibit flame travel of 5 feet or less, and
B. Produce smoke having an average optical density not greater than 0.15 and having a peak optical density of 0.5 or less when tested in accordance with U.M.C. Standard No. 10_3.
(b) Factory_made Air Ducts. Factory_made air ducts shall be approved for the use intended or shall conform to the requirements of U.M.C. Standard No. 10_1. Each portion of a factory_made air duct system shall be identified by the manufacturer with a label or other suitable identification indicating compliance with U.M.C. Standard no. 10_1 and its class designation. These ducts shall be listed and shall be installed in accordance with the terms of their listing, and the requirements of U.M.C. Standard No. 10_5.
(c) Joints and Seams of Ducts. Joints of duct systems shall be made substantially airtight by means of tapes, mastics, gasketing or other means.
Crimp joints for residential round ducts shall have a contact lap of at least 1 ½ inch and shall be mechanically fastened by means of at least one sheet_metal screw on the down side or an equivalent fastening method.
Joints and seams for 0.016_inch (No. 28 gage) and 0.013_inch (No. 30 gage) residential rectangular ducts shall be as specified in Table No. 10_A for 0.019_inch (No. 26 gage) material.
Joints and seams for rectangular duct systems shall be as specified in Table No. 10_A.
Joints and seams for flat oval ducts and round ducts in other than single dwelling units shall be as specified in Table No. 10_B.
Joints and seams and all reinforcements for factory_made air ducts and plenums shall meet with the conditions of prior approval in accordance with the installation instructions that shall accompany the product.
Environmental Air Ducts
Sec. 1104. Environmental air ducts not regulated by other provisions of this code shall comply with this section. Ducts shall be substantially airtight and shall comply with the provisions of Chapter 10. Exhaust ducts shall terminate outside the building and shall be equipped with back_draft dampers. Environmental air ducts which have an alternate function as a part of an approved smoke_control system do not require design as Class 1 product_conveying ducts.
Ducts used for domestic kitchen range ventilation shall be of metal and shall have smooth interior surfaces. Commercial dryer exhaust ducts shall be installed in accordance with their listing. For additional requirements for domestic dryer exhaust systems, see Section 1903.
EXCEPTION: Approved flexible duct connectors not more than 6 feet in length may be used in connection with domestic dryer exhausts. Flexible duct connectors shall not be concealed within construction. Bathroom ventilation ducts may terminate in the attic.
Bathroom and laundry room exhaust ducts may be a gypsum wallboard subject to the limitations of Section 1002(a). Exhaust ducts shall not extend into or through ducts or plenums.]
Section B. Effective Date.
This ordinance shall take effect and be in full force and effect 90 days from and after the date of its final passage and adoption.
Enacted and Approved
Effective Date: This Ordinance shall be effective immediately upon its signature by the County Executive.
APPROVED AS TO FORM:
___________________________ _________________________________
County Counselor
I hereby certify that the attached Ordinance, Ordinance # 3170 of August 13, 2001 was duly passed on _________August 20____________, 2001 by the Jackson County Legislature. The votes thereon were as follows:
Yeas _______6________ Nays _______0_______
Abstaining _____0______ Absents _____3_______
This Ordinance is hereby transmitted to the County Executive for her signature.
____________________ ________________________________
Date Mary Jo Brogoto, Clerk of Legislature
I hereby approve the attached Ordinance #3170.
_________________ _________________________________
Date Katheryn J. Shields, County Executive