Development Standards | Design Standards—Landscaping and Irrigation
F. Trail corridors
3. Fences located on a rockery, retaining wall or berm outside required setback areas shall not exceed the building height for the zone.
1. Trail corridors – Applicability
Trail easements, or tracts, of sufficient width and length consistent with the dimensional standards as defined below, shall be provided by all developments, except for single detached residential permits, when such developments are located on properties that include trail corridors shown within an adopted City parks or trails plan. In addition to the general public, the residents or tenants of the development shall be provided access to the trail easement. The area of the trail easement shall be counted as part of the site for purposes of density and floor area calculations.
4. Electric fences shall:
a. Be permitted in all zones; provided, that when placed within R-4 through R-18 zones, additional fencing or other barriers shall be constructed to prevent inadvertent contact with the electric fence from abutting property;
b. Comply with the following requirements:
i. An electric fence using an interrupted flow of current at intervals of about one second on and two seconds off shall be limited to 2,000 volts at 17 milliamp; ii. An electric fence using continuous current shall be limited to 1,500 volts at seven milliamp; iii. All electric fences in the R-4 through R-18 zones shall be posted with permanent signs a minimum of 36 square inches in area at 50-foot intervals stating that the fence is electrified; and iv. Electric fences sold as a complete and assembled unit can be installed by an owner if the controlling elements of the installation are certified by an A.N.S.I. approved testing agency. 5. Except as specifically required for the necessary security related to a nonresidential use, no barbed or razor-wire fence shall be located in any R-4 through R-18 zone.
2. Trail corridors – Development standards
Proposed public and private trails shall be reviewed by the department of community development for consistency with the following standards: a. Use of Existing Corridors. Trails should generally be located along existing cleared areas or on improved corridors, including but not limited to utility corridors, road or railroad rights-of-way, so as to avoid or minimize the need to remove additional vegetation and create other associated impacts. Where an existing right-of-way is wider than the cleared or improved area, proposed trails should generally be located on the cleared or improved portion of the right-of-way wherever possible, subject to safety and other technical factors. If sensitive areas exist on or in proximity to an existing cleared or improved corridor, then impacts from constructing the trail shall be mitigated consistent
314 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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