The plate shows five views. Circled numbers on each view refer to the numbered construction notes below. For example, 2 marks a turning space and 4 marks a detectable warning surface.
Parallel Curb Ramp Example (plan view): The sidewalk runs along a curved curb. It slopes down on both sides (10) to a turning space (2) at street level, which is at least 5 feet wide. A detectable warning panel lies along the curb at the turning space, and the curb next to the panel is straight.
Directional Sidewalk Ramp Example, small plan view: This is typical of a local street meeting a collector street at a corner with a 20-foot radius. Sidewalk from each street drops by a parallel curb ramp (6) into one shared turning space (2). From that turning space, a curb ramp leads into each street. Each ramp has flared sides (3), a detectable warning surface (4) at least 4 feet wide, a 2-foot taper (7), and a transition area (1) and grade break where it meets the gutter.
Directional Sidewalk Ramp Example, large plan view: The existing sidewalk on the left meets new work through a cross slope transition (1.5% target, 2.0% maximum). It then descends by a parallel curb ramp (6), up to 15 feet long, into a turning space (2) at least 4 feet wide. A directional ramp then runs down to the street, with a detectable warning surface (4), flares no steeper than 10:1 (3), a transition area (1) and a grade break. A connecting sidewalk runs up from the turning space. It keeps a clear path at least 4 feet wide past obstructions such as traffic lights, street light poles and power poles. It also includes a passing area at least 5 feet by 5 feet (8), spaced at most 200 feet apart, which is required for new construction where sidewalk is less than 5 feet wide. A cut line labeled A–A runs through this view.
Perpendicular Curb Ramp Example (plan view): Two curb ramps run straight down to the street at a corner, one per crossing. Each starts from its own turning space (2) at least 4 feet by 4 feet. Each has flared sides no steeper than 10:1 (3) and a detectable warning surface at least 4 feet wide at the bottom, next to a straight section of curb.
Section A–A (profile view): From left to right, the cut shows a cross slope transition (if necessary), then a parallel curb ramp of varying slope up to 15 feet long (6), then a turning space at least 4 feet by 4 feet with a 1.5% target and 2.0% maximum slope, then a directional or perpendicular curb ramp of varying length at a 7.5% target and 8.3% maximum slope. Concrete is at least 6 inches thick under the turning space and curb ramp (5) and at least 4 inches thick under the parallel ramp. A detail at the gutter shows the ramp meeting the gutter line, with the gutter sloping no more than 5.0% the opposite way.
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The concrete for sidewalk shall be class M-6 concrete.
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Sidewalk width shall be 4 feet minimum on local streets and cul-de-sacs with residential housing. On collector and arterial streets and areas abutted by commercial, industrial, and multi family lots, the minimum sidewalk width shall be 5 feet. When sidewalk is located back of curb, the minimum width shall be 6 feet.
For new construction on local streets and cul-de-sacs with residential housing a 5 foot wide by 5 foot long passing space is required every 200 feet. To accommodate this requirement the sidewalk must be a minimum of 5 foot wide through the driveway approach. This additional width should be located on the house side of the approach unless there are right of way restrictions making it necessary to place the additional width on the street side of the approach.
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Location of sidewalk from curb line will vary, however, in most instances the sidewalk will be located 2' off the property line. Verify sidewalk locations with the city engineers office before proceeding.
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All sidewalks shall have a 4' minimum wide path which will serve as the pedestrian access route. This pedestrian access route shall be clear of all obstructions such as light poles, signal poles, meter posts, etc. Additionally, the maximum cross slope on the pedestrian access route is 2%. Positive drainage must be maintained on all sidewalks.
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Sidewalk placed directly behind the curb and gutter shall be a minimum of 6" in depth.
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Isolation joints shall either intersect structures or be a minimum 1 foot clear of structure.