37.1
EXTERIOR CONSTRUCTION STANDARDS.
A.
Definitions. For the purpose of this section the following definitions shall apply:
1.
Masonry construction shall include all construction of stone material (including artificial stone), brick material, concrete masonry units, or concrete panel construction, which is composed of solid, cavity, faced, or veneered-wall construction. EIFS and stucco are considered masonry products in regards to this section. The standards for masonry construction types are listed below:
a.
Stone Material: Masonry construction using stone material may consist of granite, marble, limestone, slate, river rock, and other hard and durable naturally occurring all-weather stone. Cut stone and dimensioned stone techniques are acceptable.
b.
Brick Material: Brick material used for masonry construction shall be hard fired (kiln fired) clay or slate material which meets the latest version of ASTM standard C216, Standard Specification for Facing Brick (Solid Masonry Unit Made of Clay or Shale), and shall be Severe Weather (SW) grade, and Type FBA or FBS or better. Unfired or underfired clay, sand, or shale brick are not allowed.
c.
Concrete Masonry Units: Concrete masonry units used for masonry construction shall meet the latest version of the following applicable specifications; ASTM C90, Standard Specification for Hollow Load Bearing Concrete Masonry Units; ASTM C145, Standard Specification for Solid Load Bearing Masonry Units; ASTM C129, Standard Specification for Hollow and Solid Non-load Bearing Units. Concrete masonry units shall have an indented, hammered, split face finish or other similar architectural finish, integrally colored, subject to approval by the Planning and Zoning Commission. Lightweight concrete block or cinder block construction is not acceptable as an exterior finish.
d.
Concrete Panel Construction: Concrete finish, pre-cast panel or tilt wall construction shall be painted, fluted, or exposed aggregate. Other architectural concrete finish is subject to approval by the Planning and Zoning Commission. Smooth or untextured concrete finishes are not acceptable unless painted.
e.
Acrylic Matrix or Synthetic Plaster Finishes: A three component finish system consisting of one hundred percent (100%) acrylic matrix ceramically colored aggregate and sealer, or 100% synthetic plaster having two types of application, spraying or troweling. Exterior coat may be 1/16" to 3/32" in thickness. Each product can be applied to a variety of backing such as gyp sheathing, plywood, particle board, or foam board. A base coat and fiberglass mesh is used to smooth and level surfaces, corners and joints.
2.
Glass and metal standards are as follows:
a.
Glass walls shall include glass curtain walls or glass block construction. Glass curtain wall shall be defined as an exterior wall which carries no structural loads, and which may consist of the combination of metal, glass, or other surfacing material supported in a metal framework.
b.
Metal walls shall include profiled panels, deep ribbed panels and concealed fastener systems. Exterior finish shall be film laminated or baked on enamel painted to the wall manufacturer's standards.
37.2
CONSTRUCTION STANDARDS.
A.
Construction standards. The standards and criteria contained within this section are deemed to be minimum standards and shall apply to all new, altered or repaired construction occurring within the City.
1.
Residential.
a.
All buildings and structures located in residential zoning districts "A" through "SF-A" shall be of exterior fire resistant construction. Residential structures shall have one hundred percent (100%) masonry for the total exterior front building elevation, excluding doors and windows. The remaining exterior elevations shall have a minimum of eighty percent (80%) masonry for each remaining exterior elevation. In all single-family residential districts, chimneys shall be one hundred percent (100%) masonry as masonry is defined below. (For example in the larger residential zoning districts, a chimney may be 100% stucco or EIFS.)
The construction standards herein shall apply to the construction of new structures on or after August 6, 2002. Nothing contained in this section shall require any change in the plans or construction of a structure to conform to these standards for which a building permit has been issued prior to August 6, 2002, or structure for which substantially complete application for a building permit was accepted by the building official on or before August 6, 2002, provided however such structure shall comply with all applicable ordinances of the City in effect on the date of such application was filed and the building permit is issued within thirty (30) days after August 6, 2002. For buildings and structures to be constructed on a lot contained in a Preliminary Plat that was accepted prior to August 6, 2002, and which is contained within an approved Final Plat for such lot, without expiration of the Preliminary Plat for such lot, shall have at least eighty percent (80%) of the total exterior walls above grade level to the top plate line for the first floor, of masonry construction.
For the larger residential zoning districts (A, SF-E, SF-CE, SF-20, SF-15 and SF-12), masonry shall be defined as consisting of either brick, stone, synthetic brick or stone, as well as stucco and EIFS.
For the smaller residential zoning districts (SF-10, SF-9, SF-8 2F and SF-A), masonry shall be defined as consisting of either brick, stone, or synthetic brick or stone. Stucco and EIFS shall not be considered as masonry in these districts.
In the larger residential zoning districts, a home can be built that is 100 percent stucco and/or EIFs. However, in the smaller residential zoning districts stucco and/or EIFs will be limited to 20% on the side or rear elevations.
In both the large and small residential zoning districts denoted above, architectural features such as columns, shutters, dormers and ornamental gable vents are not required to be masonry, as defined for that district. Box windows located on the side and rear elevations of a residence, are not required to be masonry as defined for that district.
b.
All principal buildings and structures located in the MF District shall be of exterior fire resistant construction having one hundred percent (100%) of the total exterior walls, excluding doors and windows, constructed of brick, stone, or brick veneer. Facia and Soffit shall be constructed with non-maintenance type material.
c.
Concrete or metal exterior construction is not permitted on any residential structure.
d.
Exemptions. Accessory buildings two hundred forty (240) square feet or less are excluded from these provisions. Barns on property of three (3) acres or more providing such barns are used solely for agricultural purposes as distinguished from commercial or industrial purposes shall be exempt from provisions of this section.
2.
Nonresidential.
a.
In the Office-1 (O-1), Office-2 (O-2), Neighborhood Services (NS) and General Retail (GR) zoning districts, one hundred percent (100%) of all facades or elevations shall be of masonry construction, excluding doors and windows. For the purpose of this subsection, metal is prohibited on vertical facades of the building. Accessory facade elements such as mansard roofs, parapet walls, eaves and other similar architectural elements shall not have metal as a facade component. Awnings and cupolas are exempt from this requirement and are allowed to be metal. An awning is defined as a roof like cover of canvas or other material used to keep the sun or rain off a storefront, window, doorway or deck. Canopies are allowed to be metal as well; however, the support poles of the canopy must have masonry facades from the ground up to the roof of the canopy. Functional building elements (such as metal rain gutters, conduit, light fixtures or fire department connections) or accent materials may be exempt from the above standard, if the total combined surface of these elements is less than ten percent (10%) of each building facade or elevation area. This requirement shall apply to all new construction, building expansions or facade replacements on existing buildings in the districts so noted.
In the remaining zoning districts, all nonresidential uses shall be of exterior fire resistant construction having at least eighty percent (80%) of the total exterior walls above grade level, excluding doors and windows, constructed of masonry or glass wall construction, in accordance with the City's building code and fire prevention code. Building facades which face or side any public street or residential zoning districts, or otherwise have public exposure, shall be constructed entirely of stone, brick or glass wall construction. Consideration for exceptions shall be subject to approval by the Planning and Zoning Commission. Chimneys shall be full masonry brick, stone or synthetic plaster/acrylic matrix from slab to cap.
b.
Metal accessory buildings over two hundred forty (240) square feet may be located in the C-1, C-2, and I zoning districts and shall be constructed in accordance with the City's building code and fire prevention code, except that any structure within two hundred feet (200') of a major thoroughfare or residential zoning district shall be constructed of masonry or glass wall construction. Metal exterior walls shall be compatible in color with the principal building and existing surrounding structures.
When walls are metal, the use of corrugated panels is prohibited; profiled panels, deep ribbed panels and concealed fastener systems are permitted. Exterior finish for metal walls fronting or siding on public streets shall be of a permanent material such as a baked or enamel finish or painted to the wall manufacturer's standards. The use of galvanized, corrugated aluminum coated, zinc-aluminum coated, or unpainted exterior metal finish is prohibited.
c.
Temporary Construction Buildings: Temporary buildings and temporary building material storage areas to be used for construction purposes may be permitted for a specific period of time in accordance with a permit issued by the Building Official and subject to periodic renewal by the inspector for cause shown. Upon completion or abandonment of construction or expiration of permit, such field offices and buildings shall be removed at the direction of the Building Official.
B.
Procedure for determining alternative exterior materials:
1.
All requests for alternative exterior building materials shall be noted and described on a site plan to be submitted to the Planning and Zoning Commission for approval. If requested by the City, a sample of the material may be required to be submitted with the site plan.
2.
The City may approve an alternative exterior material if it is determined it is equivalent or better than masonry according to the criteria listed for exceptions below as part of the approval of a site plan submitted to the Planning and Zoning Commission for approval.
3.
Consideration for exceptions to the above requirements shall be based only on the following:
(Ordinance 417 as amended through 2/7/2017)