§ 150.101 AMENDMENTS TO THE 2018 INTERNATIONAL RESIDENTIAL CODE.
   (A)   Section R101.1 Title, insert (City of Columbus, NE).
   (B)   Section R101.2 Exception 5 is hereby amended to read as follows:
      A care facility for 12 or fewer persons receiving care that are within a single-family dwelling.
   (C)   Section R105 Permits. Delete the Electrical, Gas, Mechanical and Plumbing provisions.
   (D)   R105.2 Building: #1 is hereby amended to read as follows:
      One story detached accessory structures provided the floor area does not exceed 120 square feet and the structure is not located within the Floodway or Flood Plain in violation of the Unified Land Development Ordinance.
   (E)   Section R105.2 Building #2 is hereby deleted.
   (F)   Section R105.10 Building: 10 is hereby deleted.
   (G)   Section R105.2 Electrical, Gas, Mechanical and Plumbing provisions are hereby deleted.
   (H)   Section R105.5 is hereby amended to read as follows.
      Expiration.
      1.   If the work described in any building permit has not been completed started with 180 days of issuance thereof, said permit shall expire: it shall be cancelled by the Chief Building and Code Official , and written notice given to the persons affected.
      2.   If the work described in any building permit has not been completed within two years from the date of issuance thereof: said permit shall expire and be cancelled by the Chief Building and Code Official , and written notice thereof shall be given to the persons affected, together with notice that further work as described in the cancelled permit shall not proceed unless and until a new permit has been obtained.
      3.   The expiration date of a permit may be established for a period longer than two years if established at the time that such permit is issued by the city. The Chief Building and Code Official may at his/her discretion extend the expiration period of the building permit.
   (I)   Section R108.2 is hereby amended to read as follows:
      Schedule of Permit Fees. On buildings, structures, gas, mechanical and plumbing systems or alterations requiring a permit, a fee for each permit shall be paid as required, in accordance with the schedule as established by the applicable governing authority. In addition, a plan review fee equal to ten percent of the building permit shall be paid for plan review.
   (J)   Section R108.3 is hereby amended to read as follows:
      Building Permit Valuations. Building permit valuations shall include the total value of the work for which a permit is being issued, such as electrical, gas, mechanical, plumbing equipment and other permanent systems, including materials and labor. The Chief Building and Code Official is authorized to set the valuation in accordance with the most current ICC Building Valuation Data on applications as a minimum valuation when deemed necessary.
   (K)   Section R113.4 is hereby amended to read as follows:
      Violation Penalties. Any person, firm or corporation violating any of the provisions of this code shall be deemed guilty of a misdemeanor and the person shall be deemed guilty of a separate offense for each and everyday or portion thereof during which any violation of any of the provisions of this code is committed, continued or permitted and upon conviction shall be punishable by a fine of not more than 30 days or by both fine and imprisonment.
      Whenever the Chief Building and Code Official is satisfied that any provisions of this code have been violated, are about to be violated or that any order, or direction made pursuant to this code has not been carried out or is being disregarded, he may apply to the City Council and request that it order civil proceedings to be instituted. Any civil proceedings, when instituted by the City Attorney at the direction of the City Council shall be brought in the name of the City of Columbus. Nothing in this Section and no action taken thereunder will exclude any other proceedings authorized by this code or any other law or ordinance in force or to exempt any person violating this code or any of the laws from any penalty which might be incurred.
   (L)   Table R301.2(1) of the 2018 International Residential Code is hereby amended to read as follows:
Table R301.2(1)
Table R301.2(1)
Air Freezing Index
1720
Flood Hazard
Adopted FEMA Firm Map
Ice Barrier Underlayment Required
Yes
Mean Annual Temp
50
Roof Ground Snow Load
25 lbs. per square foot
Seismic Design Category
B
Subject to Damage from Decay
None to Slight
Subject to Damage from Frost Line Depth
36 inches
Subject to Damage from Termite
Moderate to Heavy
Subject to Damage from Weathering
Severe
Wind Speed
115
Winter Design Temperature
-3
 
   (M)   Section R302.5.1 is hereby amended to read as follows:
      Opening Protection. Openings from a private garage directly into a room used for sleeping purposes shall not be permitted. Openings between the garage and residence shall be equipped with solid core doors not less than 1 3/8 inches (35 millimeters) thick, or 20-minute rated fire doors.
   (N)   Section R302.13 Fire Protection of Floors is hereby deleted entirely.
   (O)   Section R311.7.5.1 of the 2018 International Residential Code is hereby amended to read as follows:
      Risers. The maximum riser height shall be 8 inches (203 mm). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Risers shall be vertical or sloped from the underside of the nosing of the tread above at an angle not more than 30 degrees (0.51 rad) from the vertical. Open risers are permitted provided that the opening between treads does not permit the passage of a 4-inch-diameter (102 mm) sphere.
      Exception 1: The opening between adjacent treads is not limited on spiral stairways.
      Exception 2: The riser height for spiral stairways shall be in accordance with Section R311.7.10.1.
   (P)   Section R311.7.5.2 of the 2018 International Residential Code is hereby amended to read as follows:
      Treads. The minimum tread depth shall be 9 inches (229 mm). The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread’s leading edge. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm).
   (Q)   Section R313 Automatic Fire Sprinkler Systems of the 2018 International Residential Code is hereby deleted entirely including R313.1 and the exceptions, R313.1.1, R-313.2 and the exception and R313.2.1.
   (R)   Section R322 of the 2018 International Residential Code is hereby amended to read as follows:
      Flood-Resistant Construction where approved by Federal, State, and city Flood Plain regulations and incorporated in the Unified Land Development Ordinance for the City of Columbus.
   (S)   Section R403.1.4.1 of the 2018 International Residential Code is hereby amended to read as follows:
      Frost Protection. Except where otherwise protected from frost, foundation walls, piers and other permanent supports of buildings and structures shall be protected from frost by one or more of the following methods.
      1.   Extending below the frost line specified in Table R301.2(1).
      2.   Constructing in accordance with Section R403.3.
      3.   Constructing in accordance with ASCE 32.
      4.   Erected on solid rock.
      Exceptions:
      1.   One story unheated sheds 180’ and less where the bearing wall width is 12’ or less may be constructed on a 4” slab.
      2.   One-story detached unheated garages and sheds constructed with light frame construction and not over 440 square feet in floor area (where no dimension exceeds 22 feet and the width between bearing walls does not exceed 20 feet, may be constructed with walls supported on a monolithic footing and slab. The footing shall be a minimum of 12 inches below grade and eight inches wide.
      3.   One story detached unheated garages and sheds constructed with light frame construction and not over 600’ may be constructed on a monolithic footing and foundation designed by a registered Nebraska engineer with a Nebraska stamp on the plan.
      4.   Detached garages and sheds that are over 440 square feet and not constructed as outlined in exception 3, require 8” wide by 36” below grade foundations.
      5.   Decks not supported by a dwelling need not be provided with footings that extend below the frost line.
   (T)   All provisions contained in Section R405 of the 2018 International Residential Code are hereby deleted and shall be replaced with the following subsurface drainage provisions and the 2018 International Residential Code is amended accordingly, to-wit:
      R405: Subsurface Drainage.
      Section 1.
      Drainage System. All residential dwellings located within the city limits of the City of Columbus or within the extraterritorial jurisdiction of the city, shall have installed, unless a waiver is obtained as provided herein, a system to remove subsurface water from below grade habitable space. The systems for removing the water may be a coarse gravel base, subsoil drain, both of which are described herein, or any other system or combinations thereof when approved by the Chief Building and Code Official of the City of Columbus.
      Section 2.
      Definitions. Coarse gravel base, for the purposes of this Section shall mean, a minimum of 12” coarse gravel under the concrete floor of any below grade habitable spaces, with one 24” x 24” diameter deep well, the well being screened and having a concrete base, to act as a sump, for each 750 square feet of floor area of below grade habitable space.
      Subsoil drain, for purposes of this Section shall mean subsoil drain tiles with an approved filter membrane and a sump pit installed around the perimeter of foundations enclosing habitable spaces located below grade. In addition to the perimeter drains, the drains shall be installed so that all areas of the floor of below grade habitable space are within 10” of a drain tile. Drain tiles shall be installed at or below the area to be protected. The drain tile shall be surrounded by a minimum of 6” coarse gravel on all sides. The drain tile shall have a minimum diameter of 4” along with an approved filter membrane and shall be constructed of vitrified clay tile or PVC pipe. The sump into which the drain tile discharges shall be constructed of concrete or masonry block and shall have a minimum dimension of 24” x 24”. The sump may also be constructed of polyethylene or other materials approved by the Chief Building and Code Official with a sealed lid.
      With either of the above-described systems, the sump shall discharge by gravity or mechanical means to a storm sewer, street or natural drainage way approved by the Chief Building and Code Official , but specifically shall not discharge into a sanitary sewer system.
      Habitable space is defined, for purposes of this Section, as any space having a ceiling height of not less than 6’ feet which is partially or completely below the ground level elevation.
      All other terms and phrases used herein shall be defined by the International Residential Code as adopted by the City of Columbus, Nebraska.
      Section 3.
      Administration. The Chief Building and Code Official shall approve all drainage systems prior to and during their installation.
      The requirements to install a drainage system for the removal of subsurface water may be waived under the following conditions:
         a.   The Chief Building and Code Official may waive this Section if the floor of the below grade habitable space is above the highest recorded water level at the particular location of the building so constructed as demonstrated and proven by the owners of the property upon which the building is to be constructed.
         Highest ground water elevation shall be determined by open soil boring on the property upon which the residence is to be constructed.
         b.   Owners of the subdivisions and additions platted prior to the adoption of this Section may apply for a waiver on the entire subdivision, the waiver being granted by the Chief Building and Code Official . The Chief Building and Code Official shall grant a waiver if the owner of the subdivision shows to the Chief Building and Code Official that the floors of below grade habitable space will not be constructed lower than the highest recorded ground water elevation.
         The highest ground water elevation shall be determined by soil borings taken at various locations within the subdivision or addition. The soil borings shall be located not more than 300 feet apart or one per each acre or portion thereof in the addition or subdivision, whichever would require the least number of soil borings.
         c.   Subdivisions or additions approved subsequent to the passage of this Section which require that all below grade habitable spaces constructed in the subdivision or addition be constructed in a manner that the floor of the below grade habitable space is above the height of the highest measured ground water elevation.
         The highest ground water elevation shall be determined by soil borings of various locations within the subdivision or addition. The soil borings shall be located not more than 300 feet apart or one per each acre or portion thereof, in the addition or subdivision, whichever would require the least number of soil borings.
      Section 4.
      Default. Failure to comply with the terms of this Section, by the owner of any building covered by this Section or by the owner of any real property included within the terms of this Section may result in the denial of the building permit application and a fine of $100 per day that the building does not conform to the above requirements.
   (U)   All provisions contained in Chapter 11 of the 2018 International Residential Code are hereby deleted and shall be replaced with the following manufactured home dwelling provisions and the 2018 International Residential Code is amended accordingly, to-wit:
      Chapter 11: Manufactured Home Dwellings.
      Section 1.
      Definitions. For purposes of this Section, “manufactured home dwellings” shall mean a factory built structure which is to be used as a place for human habitation, which is not constructed or equipped with a permanent hitch or other device allowing it to be moved other than to a permanent site; which does not have permanently attached to its body or frame, any wheels or axles and which bears a label certifying it was built in compliance with the National Manufactured Home Construction and Safety Standards promulgated by the U.S. Department of Housing and Urban Development.
      Section 2.
      Construction Standards. A manufactured home complying with the following architectural or ascetic standards may be placed in all residential zones provided:
         a.   The home shall not have less than 900 square feet of floor area;
         b.   The home shall not have less than an 18 foot exterior width;
         c.   The roof shall be pitched with a minimum vertical rise of 2.5” for each 12” of horizontal run;
         d.   The exterior material shall be of a color, material and scale comparable with those existing in the residential site in which the manufactured home dwelling is being permanently installed;
         e.   The home shall have a nonreflective roof material which is or simulates asphalt or wood shingles, tile or rock;
         f.   Permanent utility connections shall be installed in accordance with local regulations;
         g.   The home shall bear an appropriate seal which indicates it was constructed in accordance with the standards of the U.S. Department of Housing and Urban Development;
         h.   The home shall have all wheels, axles, transporting lights and the removal towing apparatus removed; and
         i.   The home shall be constructed upon a permanent foundation that is constructed and build in accordance with local regulations.
   (V)   Chapter 12 of the 2018 International Residential Code is hereby deleted and shall be replaced with the following Radon requirements as required per state law.
      Radon systems shall be installed as outlined in State statute 76-3504 per LB130 2019 signed by the Governor on May 1, 2019 and include;
      Terms, defined.
      For purposes of the Radon Resistant New Construction Act:
      (1)   Active radon mitigation system means a family of radon mitigation systems involving mechanically driven soil depressurization, including sub slab depressurization, drain tile depressurization, block wall depressurization, and submembrane depressurization. Active radon mitigation system is also known as active soil depressurization;
      (2)   Building contractor means any individual, corporation, partnership, limited liability company, or other business entity that engages in new construction;
      (3)   Department means the Department of Health and Human Services;
      (4)   New construction means any original construction of a single-family home or a multifamily dwelling, including apartments, group homes, condominiums, and townhouses, or any original construction of a building used for commercial, industrial, educational, or medical purposes. New construction does not include additions to existing structures or remodeling of existing structures;
      (5)   Passive radon mitigation system means a pipe installed in new construction that relies solely on the convective flow of air upward for soil gas depressurization and may consist of multiple pipes routed through conditioned space from below the foundation to above the roof;
      (6)   Radon mitigation specialist means an individual who is licensed by the department as a radon mitigation specialist in accordance with the Radiation Control Act; and
      (7)   Radon resistant new construction means construction that utilizes design elements and construction techniques that passively resist radon entry and prepare a building for an active post construction mitigation system.
      Radon resistant new construction; minimum standards.
      Except as provided in Section 76-3505, new construction built after September 1, 2019, in the State of Nebraska that is intended to be regularly occupied by people shall be built using radon resistant new construction. Such construction shall meet the following minimum standards:
      (1)   Sumps:
         (a)   A sump pit open to soil or serving as the termination point for sub slab or exterior drain tile loops shall be covered with a gasketed or otherwise sealed lid;
         (b)   A sump used as the suction point in a sub slab depressurization system shall have a lid designed to accommodate the vent pipe; and
         (c)   A sump used as a floor drain shall have a lid equipped with a trapped inlet;
      (2)   A passive sub slab depressurization system shall be installed during construction in basement or slab-on-grade buildings, including the following components:
         (a)   Vent pipe:
            (i)   (A)   A minimum three-inch diameter acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC), or equivalent gas-tight pipe shall be embedded vertically into the sub slab permeable material before the slab is cast. A “T” fitting or equivalent method shall be used to ensure that the pipe opening remains within the sub slab permeable material; or
               (B)   A minimum three-inch diameter ABS, PVC, or equivalent gas-tight pipe shall be inserted directly into an interior perimeter drain tile loop or through a sealed sump cover where the sump is exposed to the sub slab or connected to it through a drainage system;
            (ii)   The pipe shall be extended up through the building floors and terminate at least twelve inches above the surface of the roof in a location at least ten feet away from any window or other opening into the conditioned spaces of the building that is less than two feet below the exhaust point and ten feet from any window or other opening in adjoining or adjacent buildings; and
            (iii)   In buildings where interior footings or other barriers separate the sub slab gas-permeable material, each area shall be fitted with an individual vent pipe. Vent pipes shall connect to a single vent that terminates above the roof or each individual vent pipe shall terminate separately above the roof. All exposed and visible interior radon vent pipes shall be identified with at least one label on each floor and in accessible attics. Such label shall read: Radon Reduction System; and
      (3)   Power source: In order to provide for future installation of an active radon mitigation system, an electrical circuit terminated in an approved box shall be installed during construction in the attic or other anticipated location of vent pipe fans.
      Conversion of passive radon mitigation system to active radon mitigation system authorized.
      A building contractor or a subcontractor of a building contractor may convert a passive radon mitigation system to an active radon mitigation system in accordance with rules and regulations adopted and promulgated by the department under the Radiation Control Act for radon mitigation, but the contractor or subcontractor is not required to be a radon mitigation specialist to convert such system. A radon mitigation specialist shall conduct any post installation testing of such system.
   (W)   Chapters 13 and 14 of the 2018 International Residential Code are hereby deleted.
   (X)   Chapters 16-22 and 24-43 of the 2018 International Residential Code are hereby deleted.
(Prior Code, § 150.106) (Ord. 03-47, passed 12-15-2003; Ord. 11-11, passed 3-21-2011; Ord. 15-27, passed 1-18-2016; Ord. 19-42, passed 11-18-2019; Ord. 20-29, passed 1-4-2021)