(A) Section 9-301.04 IBC - Amendment of § 1809.7. Section 1809.7 of the International Building Code is hereby amended by adding the following:
Bearing Walls
Bearing Walls shall be supported on masonry or concrete foundations or piles or other approved foundation system which shall be of sufficient size to support all loads. Where a design is not provided herein, the minimum foundation requirements for stud hearing walls shall be as set forth in Table No. 1809.7.
EXCEPTIONS:
(1) A one-story wood or metal frame building not used for human occupancy and not over two hundred (200) square feet in floor area may be placed upon a concrete slab of four inch (4") minimum thickness.
(2) Detached accessory buildings not exceeding 625 feet in floor area may use a six-inch wide by eighteen inch deep foundation system with at least twelve inches below grade.
(B) Section 9-301.05 - Amendment of § 1805 (IBC) and amendment of R406 (IRC). Section 1805 of the International Building Code and Section R406 of the International Residential Code is hereby amended by adding thereto the following:
1805.2.2 & 1805.2.2.1 Walls & Surface Preparation of walls, and R406, R406.2, subsurface drainage system shall be included as an alternative to waterproofing. Add Backplaster and Dampproofing.
Exterior foundation walls below grade of any building consisting of masonry units having a basement shall be backplastered with one-half inch (2") Portland cement and sand mix (1:2 2 by volume) or two one-fourth inch (1/4") coats of Type M mortar, and with an approved dampproofing material. Poured concrete foundations shall be coated with dampproofing without backplaster. Alternative dampproofing may be approved by the building official.
1805.4 Delete existing and add Surface Drainage Systems.
All buildings constructed with basements or floor levels twenty-four (24) inches or more below the elevation of the center line of the adjacent public street be provided with a subsurface drainage system. A subsurface drainage system shall consist of the minimum following elements:
(1) Minimum four inch (4") diameter perforated or scored drain pipe embedded in four inches (4") of coarse gravel installed around the inside of the perimeter footing such that no floor location is greater than ten feet (10') to such drain pipe.
(2) Minimum fifteen inch (15") diameter by thirty inch (30') deep sump pump pit for each one thousand five hundred (1,500) square feet area to be drained.
(3) Minimum four inch (4") gravel bed under floor slab.
(4) A three inch (3") minimum diameter pipe shall be installed through the floors and into the attic space, capped and sealed to facilitate a future soil gas ventilation system.
(C) Section 9-301.06 Permits required: amendment of § 105 (IBC) and § R105 (IRC). Section 105 of the International Building Code and Section R105 of the International Residential Code shall be amended by adding the following:
No person, firm, or corporation shall erect, construct, enlarge, alter, repair, move, improve, remove, convert, or demolish, equip use, occupy, or maintain any building or structure in the city, or cause the same to be done without first obtaining a separate building permit for each such building or structure from the Building Department; provided, no permit shall be issued by the Building Department unless and until authorized by resolution of Hall County in any one or more of the following cases:
(1) Where the real property described in the application for permit does not front upon a dedicated street or public road;
(2) Where a subdivision as required by state statutes has not been lawfully approved and recorded with the Register of Deeds.
Amend Section R105.2 Work exempt from building permit.
(1) Replace 200 (IRC) square feet with 120 square feet.
(D) Section 9-301.07 - amend § 1029.1 (IBC) and amend § R303 and R310 (IRC). The following are hereby amended to § 1029.1 exception of the International Building Code add exceptions:
EXCEPTIONS: Basements used exclusively for the service of buildings and which do not exceed three hundred (300) square feet.
Section 310.1 Exceptions: Basements used only to house mechanical equipment and not exceeding total floor area of three hundred (300) square feet.
In existing single family residential occupancies other than apartments, a sleeping room may be added in an existing basement if the following conditions are met:
(1) The sleeping room must have an openable window meeting egress requirements.
(2) Smoke detectors have been installed in the sleeping room, the furnace room, and in the exitway of the basement.
(3) Carbon monoxide detectors have been installed in common areas.
(Ord. 283, passed 8-2-2016)