Architectural Design Standards

September 23, 2009

ADS 4.6 Building Materials

Commercial, Mixed-Use, Civic
I	II	III	IV

ADS 4.6.1 Intent.

Buildings shall be attractive and durable. To ensure this, buildings shall be constructed of high-quality materials and require minimal maintenance.

Standard:

ADS 4.6.2 Allowed Materials.

Exterior building materials are classified according to their visual weight; exterior building materials shall include, but shall not be limited to, the following:

Allowed Exterior Materials
Heavy Materials		Medium Materials	Light Materials
Stone Cast Stone Brick Synthetic Stone (see ADS 4.6.5) Integrally-Colored Split-Face Block When recommended by the Site Plan Review Committee, the Planning Commission may approve other materials found to be comparable to the listed heavy materials (high-quality, durable)		Stucco Water-Managed EIFS	High-Quality Wood Cement Board Synthetic Wood Light-Gauge Metal Glass Curtain Wall

ADS 4.6.3 Location.

Heavy materials shall be located below medium and light materials; medium materials shall be located below light materials. Heavy materials shall extend to grade.

ADS 4.6.4 Required Heavy Materials.

At least 50% of the total exterior wall area of each building elevation, excluding gables, windows, doors, and related trim, shall be heavy materials. The balance of exterior wall area shall be medium or light materials.

ADS 4.6.5 Synthetic Stone.

Synthetic stone, such as pre-manufactured fiberglass, cultured stone, or glass-fiber reinforced concrete is permitted, provided it is identical in appearance and of equal or greater durability to natural stone.

ADS 4.6.6 Vertical Change of Materials.

A vertical change of materials shall occur at an interior corner or shall not occur within four (4) feet of an exterior corner.

ADS 4.6.7 Building Rehabilitation.

The rehabilitation of existing buildings shall comply with the requirements for exterior building materials. Use of alternate exterior materials for the rehabilitation of existing buildings is subject to approval by the Planning Commission and/or City Council upon recommendation of the Site Plan Review Committee.

ADS 4.6.8 Prohibited Materials.

Unless approved by the Site Plan Review Committee, exterior building materials shall not include the following:

Prohibited Exterior Materials
Split Shakes Rough-Sawn Wood Board and Batten Wood Vinyl Siding		Smooth-Faced Gray or Stained Concrete Block Painted Concrete Block Tilt-up Concrete Panels Barrier-type EIFS		Field-Painted or Pre-Finished Standard Corrugated Metal Siding Standard Single or Double Tee Concrete Systems

Standard

diagram drawing of exterior and interior corners of a building plan

Don't Do This:
This building has no heavy materials.

Don't Do This:

photo of a single commercial building

This building has no heavy materials.

Do This:
The brick comprises at least 50% of the wall area; horizontal changes of materials do not occur within 4' of an exterior corner.		The stucco wall is located above the brick and stone wall; the brick and stone comprise at least 50% of the wall area.		The stucco wall is located above the stone wall; the stone comprises at least 50% of the wall area.

Effective on: 1/1/1901