§ 14-3-1 MINIMUM STANDARDS.

   This section (Tables 1 and 2) specifies the access, driveway and parking standards for residential and commercial development. These standards are subject to all conditions and exceptions described herein. These standards shall be considered the minimum standards. When two or more standards conflict, the more restrictive standard shall apply.

Table 1
Driveway/Feeder Road Standards
Standard	Single-Family, Two-Family, Primary/Secondary	Multiple-Family	Multiple-Family And Commercial
	- Access to not more than 3 dwelling units (including EHUs) - Structures and all portions thereof within 150 ft. from edge of street pavement	- Access to 4 to 11 dwelling units - Feeder road only	- Access to more than 11 dwelling units and/or commercial properties - Feeder road only
Driveway/Feeder Road
Minimum width normal (detail 1)	12 ft.	20 ft. - Access from feeder road to units shall comply with single-family requirements contained herein	22 ft. - Access from feeder road to units shall comply with single-family requirements contained herein
Minimum width 90 degree corner (crossover) (detail 2)	15 ft.	24 ft.	24 ft.
Minimum width entrance/curb cut (detail 1)	16 ft. (flare to 16 ft.)	24 ft. (flare to 24 ft. with 10 ft. curb return radius)	28 ft. (flare to 28 ft. with 15 ft. curb return radius)
Maximum width entrance/curb cut (detail 3)	24 ft. head in 48 ft. back out	36 ft.	36 ft.
Minimum grade centerline (detail 4)	0.5%	0.5%	0.5%
Maximum grade centerline (detail 4)	10% unheated 12% heated	9% unheated 12% heated	9% unheated 12% heated
Maximum grade centerline corner/crossover (detail 2)	8% unheated 12% heated	8% unheated 12% heated	8% unheated 10% heated
Maximum cross slope grade (detail 1)	8%	8%	8%
Entry angle minimum deflection for first 30 ft. of driveway length (detail 5)	45 degrees	70 degrees	70 degrees
Maximum centerline breakover grade (detail 6)	14%	6%	4%
Maximum grade at edge of public road asphalt (detail 4)	8%	6%	4%
Maximum length of maximum grade at edge of public road asphalt (detail 4)	10 ft.	15 ft.	30 ft.
Minimum centerline turning radius (detail 7)	20 ft.	30 ft.	40 ft.

 

Table 2
Residential Access and Parking Standards
Standard	Single-Family, Two-Family, Primary/Secondary - Access to not more than 3 dwelling units (including EHUs) - Structures and all portions thereof within 150 ft. from edge of street pavement	Multiple-Family - Access to 4 to 11 dwelling units - Feeder road only	Multiple-Family - Access to more than 11 dwelling units - Feeder road only
Curb Cuts
Curb cuts permitted (number)	1 per street per unit Maximum of 2 curb cuts per lot	2 per parcel	Minimum necessary for adequate access
Parking Requirements
Minimum horizontal clearance between garage doors (parallel to road) to edge of public street pavement (detail 3)	24 ft.	N/A	N/A
Minimum horizontal clearance between required parking space and edge of public street or feeder road pavement	5 ft.	5 ft.	5 ft.
Minimum horizontal clearance from feeder road to structures/ obstructions (e.g., guardrails, trees, retaining walls and the like) (detail 8)	N/A	2 ft. from obstructions 5 ft. from buildings	5 ft. from obstructions 10 ft. from buildings
Parking space size	9 ft. x 19 ft. surface 9 ft. x 18 ft. enclosed	See Table 5, § 14-5-1 of this title, commercial/multipl e-family parking lot standards	See Table 5, § 14-5-1 of this title, commercial/multipl e-family parking lot standards
Sight distance triangle (detail 3)	Forward movement: 10 ft. perpendicular x 250 ft. lateral Backward movement: 15 ft. perpendicular x 250 ft. lateral or per AASHTO intersection sight distance standards if required by the Administrator	10 ft. perpendicular x 250 ft. lateral or per AASHTO intersection sight distance standards if required by the Administrator	10 ft. perpendicular x 250 ft. lateral or per AASHTO intersection sight distance standards if required by the Administrator, or by an approved mitigation device
Backout/turnaround area (detail 7)	12 ft. wide 20 ft. centerline radius Designed for 3 point turn or less Required when: - crossover angle is greater than 120 ; - entry angle is less than 70 ; - accessing a collector, arterial, or commercial street; or - backout sight triangle requirement is not met	Backout into right-of-way prohibited Turnaround area: - 12 ft. wide - 20 ft. centerline radius - Designed for 3 point turn or less	Backout into right-of-way prohibited Car turnaround area: - 12 ft. wide - 20 ft. centerline radius - Designed for 3 point turn or less Truck turnaround area: Shall be designed so trucks exit site forward as determined by traffic engineer based on uses proposed
Driveway pan (drainage) (detail 1)	4 ft. wide concrete pan at edge of asphalt for the full width driveway pavement including returns	4 ft. wide concrete pan at edge of asphalt for the full width driveway pavement including returns	8 ft. wide concrete pan at edge of asphalt for the full width driveway pavement including returns

 

(Ord., 9-21-1999; Ord. 14(2006) § 5; Ord. 28(2007) § 12)

Editor’s note:

   For diagrams depicting the requirements herein, see figures in Chapter 11 of this title that correspond to the detail numbers given in parenthesis.