The following codes are hereby adopted by reference and made a part of this ordinance as if set out at length herein.
A Building Code: 2021 International Codes with Amendments. The following additions, insertions, deletions, and changes are hereby made:
Section 101.1 Title. These regulations shall be known as the Building Code of Grundy County. Hereinafter, referred to as "the code".
Section 101.4.3 Plumbing: The provisions of the most current edition of the Illinois State Plumbing Code shall apply to the installation, alterations, repairs and replacement of plumbing systems, including equipment, appliances, fixtures, fittings and appurtenances and where connected to a water or sewage system and all aspects of a mechanical gas system.
Section 101.4.5 Fire Prevention. The provisions of the code enforced by the Fire Department having jurisdiction shall apply to matters affecting or relating to structures, processes and premises from the hazard of fire and explosion arising from the storage, handling or use of structures, materials or devices; from conditions hazardous to life, property or public welfare in the occupancy of structures or premises; and from the construction, extension, repair, alteration or removal of fire suppression, automatic sprinkler systems and alarm systems or fire hazards in the structure or on the premises from occupancy or operation.
Section 104.G Energy: The current provisions of the International Energy Code, with modifications from the State of Illinois, shall apply to all matters governing the design and construction of buildings for energy efficiency.
Section 1102.1 Design: Buildings and facilities shall be designed and constructed to be accessible in accordance with this code and ICC Al 17.1 and the current editions of both the Federal ADA and Illinois Accessibility codes.
Section 1612.3 Establishment of flood hazard areas: To establish flood hazard areas, the applicable governing authority shall adopt a flood hazard map and supporting data. The flood hazard map shall include, at a minimum, areas of special flood hazard as identified by the Federal Emergency Management Agency in an engineering report entitled "The Flood Insurance Study for Grundy County dated August 2, 2012, as amendment or revised with the accompanying Flood Insurance Rate Map (FIRM) and the Flood Boundary and Floodway Map (FBFM) and related supporting data long with any revisions thereto. The adopted flood hazard map and supporting data are hereby adopted by reference and declared to be part of this section.
Section 3115 Intermodal Shipping Containers: Delete in its entirety.
B. Residential Code: 2021 International Residential Code with amendments. The following additions, insertions, deletions, and changes are hereby made:
Section R101.1 Title: These provisions shall be known as the Residential Code for One- and Two-family Dwellings of Grundy County and shall be cited as such and will be referred to herein as "this code".
Section R102.7 Existing Structures: The legal occupancy of any structure existing on the date of the adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the International Property Maintenance Code, or the code enforced by the Fire Department having jurisdiction, or as is deemed necessary by the building official for the general safety and welfare of the occupants and the public.
R112.00 Board of Appeals - Remove this section in its entirety as the Land Use Committee fulfills this function as part of the Grundy County Code.
Table R301.2 (1) Climate and Geographic Design Criteria
Climatic and Geographic Design Criteria
Ground Snow Load | Wind Design | Seismic Design Category | Subject To Damage From | ||
25 psf | Speed (mph) Topographic Effects Windbome Debris Zone | 107 No No | B | Weathering Frost Line Depth Termite | Severe 42 inches Moderate to Heavy |
Winter Design Temp | Ice Barrier Underlayment Required | Flood Hazards | Air Freezing Index | Mean Annual Temp |
0 Deg F | Yes | 8/2/2012 | 2000 | 50.1 |
Manual J Design Criteria
Elevation | Latitude | Winter Heating | Summer Cooling | Altitude Correction Factor | Indoor Design Temp | Design Temp Cooling |
498 feet | 41.35 | 5 | 90 | N/a | 65 deg F | 75 deg F |
Heating Temp Difference | Cooling Temp Differen ce | Wind Velocity Heating | Wind Velocity Cooling | Coincide nt Wet Bulb | Daily Range | Winter Humidity | Summer Humidity |
60 | 15 | 15 | 7.5 | 75 | 20(M ) | 30% | 50% |
Section R313.0 Automatic Fire Sprinkler Systems -Delete entire section which requires sprinkler systems to be installed in one and two family dwelling units and townhomes.
Chapters 25, 26, 27, 28, 29, 31, and 32 shall be deleted as Plumbing requirements as Grundy County enforces the most current IL State Plumbing Code with amendments. Chapter 30 Sanitary Drainage shall be deleted as the Grundy County Environmental Health Department enforces requirements for septic installations. (Ord. 2016-017, 12-13-2016; amd. Ord. 2019-011, 5-14-2019; Ord. 2023-004, 5-9-2023)