Parking
Site parking calculation: 50000 sqft, building 10000 sqft, parking: Building (3:1) ratio, 400 sqft per car: Number of parking slots
Building: Parking
10K: ? 1:3–> parking (3X 10K)—> 30K
30000/400= 75 parking
New rental center factor: Accessibility to market area traffic
FAR (Floor to Area Ratio): 30% in 12000 sqft lot. Therefore (0.3*12000)=) 3600 sqft allotted. If four story building, 900 sqft per floor, and 2700 sqft will be above grade.
60 degrees parking= Easy to use, not efficient
90 degree parking= Most efficient
Parking ANSi standard for handicap: 8 ft stall plus 5 ft sides 3 ft curb for access
Parking lot large: Do not do: Dead level paved areas causes ponding of water and dead end aisles creates congestions
Entrance versus exiting parking lot: Slow exit even stop to yield. Entrance faster speed of advancement road
Parking layout
Correct: traffic aisles arranged to serve buildings they serve
> Angled parking requires one way traffic
> Circulation of traffic in parking is continuous
> Slow (not rapid) traffic towards 90 degrees
perpendicular parking layout
Area for parking cars: Good/car therefore 300 cars
300*400 cars= 120,000
For retail: 3000 to 4000 sqft parking per 1000 retail space
To reduce vehicle usage: Central city area:
Incentives for car pool, monthly rate parking fee,
-No parking (or united parking) with tax system earmarked for public transportation
Area for parking lot: 325 cars park @90 degrees parking.
325 cars x 400 square feet for = 130,000/ 43560 =2.98 acre
Road/carcirculations: Curviilinear is similar to natural environmental. Others “not” grid, radial, linear
Fastest volume of traffic- Free express way (no stops/lights). Not: Access, distributor, collector, arterial, highway, interchange
Land use and development use: Street system. Not: Topographic, climate (factors) or utility system
Shopping centers to be located @ intersection of arterial/collections
Street design criteria: Curb radii min.= 12′; traffic lanes (12ft); Intersections to be @ right angle; Avoid Compound curves; Parking lanes to be included
Street design criteria:
Light street: 4” roll-curb
Heavy traffic: 6” curb & gutter; 9’0” shoulder on each side of street and concrete paving. Asphalt is best choice. Vehicle width for lanes 11 to 12 ft
Power lines installed above: Are cheaper
Pedestrians circulations: Only safety matters
Non-ambulatory disabilities: Physical layout
2 Wheelchairs pass = 60” in diameter (clear 180 degree turn).
Walkway not interrupted by cracks or edge ½” or more in height.
Walkways not greater than 5% gradient.
Ramp minimum 36” side
Road Position: Gradient is 5%: 5:100
150 ft away elevation 142.5’ on hill
5% of 150 ft= 7.5 ft
142.50 +7.5 = 150 ft <<<<<<<<<<--
Parking 361 cars minimum Accessible requirements
Over 150 - 249 5 + two cars per 100
250- 349 7
350- 449 9
Parking: 2 accessible cars stall: 8’+5’+8’ = 21 ft
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