De-Mystifying Automated Parking Structures. Don Monahan Vice President Walker Parking Consultants. Construction Cost Comparisons. Annual Operating Cost Per Space. Notes:. Neither garage is cashiered. Both use automated pay stations. No labor cost. - PowerPoint PPT Presentation
De-Mystifying Automated Parking Structures Don Monahan Vice President Walker Parking Consultants
Transcript
De-Mystifying Automated Parking Structures
Don MonahanVice President
Walker Parking Consultants
Construction Cost ComparisonsUnit Cost,
$ per sfEfficiency,
SF/StallCost Per
StallAutomated Machinery
Cost, $/Stall
Total Cost, $/Stall
Ramp Garage, Above Grade
$45 320 $14,400 0 $14,400
Ramp Garage, Under Building, Above Grade
$75 450 $33,750 0 $33,750
Ramp Garage, Under Building, Below Grade
$105 450 $47,250 0 $47,250
Automated Garage, Under Building, Above Grade
$65 225 $14,625 $16,000 $30,625
Automated Garage, Under Building, Below Grade
$85 225 $19,125 $16,000 $35,125
monahand
A stand-alone, above grade, ramp garage will almost always be less expensive than an automated garage unless the ramp garage is on such a tight or irregular site that it is very inefficient (i.e. greater than 450 sf per stall). Conversely, an automated underground garage, under a building, will almost always be less expensive than an conventional garage because the automated garage can be constructed in half the volume for the same capacity as a conventional underground garage. At the high unit cost of underground construction, the savings in construction cost will offset the savings in the automated machinery cost.
Notes: 1. Neither garage is cashiered. Both use automated pay stations. No labor cost.
2. Insurance estimated at 50% of ramp access garage.3. Utility cost equals $0.05 per movement times 2 movements per
stall per day times 365 days plus lighting at 9 watts per stall operating 24/7 at $0.10 per kilowatt-hour.
monahand
Automated garage operating costs are estiimated as no hard data available from existing U.S. projects except that I did receive two estimates on maintenance costs. Maintenance is similar to elevator maintenance contracts. The maintenance contract for a 60-space garage in Washington DC was $3000 per year per space ($500 per month). Maintenance cost on a small capacity garage will be much higher than in a 300-car garage. A proposal for a 1,000 car automated garage in Hawaii indicated a maintenance cost of $35 per month per space or $400 per space per year.
Status of Automated Parking in USAProject Location No. of Stalls924 Garden St. Hoboken, NJ 314One York Condominiums New York, NY 40123 Baxter St. New York, NY 671706 Rittenhouse Square Philadelphia, PA 64Juniper Street Garage Philadelphia, PA 224418 Jessie Street San Francisco, CA 27 (9 floors)Summit Grand Parc Washington, DC 74Johnson Ave. Coconut Creek, FL 300 storage, 100 carsI-595 & US-1 Fort Lauderdale, FL 300 storage, 140 carsPalisades of Towson Towson, MD 409148 E. 24th Street New York, NY 531504 Coney Island Ave New York, NY 270123 Beverly Street Boston, MA 300275 Seabreeze Ave Brooklyn, NY 13220 Grand Street Brooklyn, NY 65City Hall Garage West Hollywood, CA 200
Case Study #3: West Hollywood, CA
monahand
Existing surface lot at West Hollywood city Hall illustrated on this slide. City Hall was under-parked according to zoning requirements. Employees were parking 2 to 3 blocks away in a public garage that was always full to capacity. In order to free up parking for adjacent businesses, the city wanted to expand parking on this lot. Existing problem at lowe right corner of lot where trucks had to back in to loading dock and would bloick the entrance to the lot. Also, the city wanted to provide for additional outdoor public space.
Ramp-access Garage Site Plan
Ramp-access garage consumes almost entire site.
monahand
This slide shows the footprint of a conventional garage design. Because of required setbacks, the entire lot could not be used for the garage. there is a residential neighborhood to the left with only a 9 foot setback to the five level garage. Additionally the right side of the garage was only 10 feet from the city hall building blocking the view and light to many of the offices. the truck problem at the laoding dock was not entirely solved.
Automated Garage Site Plan
Smaller footprint with Automated Garage enhances site development.
monahand
the automated garage only required 60% of the footprint of the conventional garage resulting in a 22'-6" setback to the residential neighborhodd to the left and allowing for a 27 foot wide landscaped civic plaza between the garage and city hall. There was a 41'-6" setback created off of Sweetzer that provided a motor court for police vehicles and city vehicles while allowing trucks to pull in and back to the loading dock without impacting the automated parking access at the lower left side of the site.
Parking Garage Comparisons
Garage Type
# Level
s
Length,
FT
Width,FT
Floor Area,
SF
# Stall
s
Efficiency,
SF/Stall
Unit Cost,
$/SF
Const. Cost,
$
Cost per
Stall,$
Ramp-Access Garage
4-1/2 182 112 90,272 203 445 $60 $6.0 Million
29,600
Automated
Garage
5 144 81 58,217 217 268 $106 $6.2 million
$28,170
Automated garage compares favorably to inefficient ramp-access garage on small site.
monahand
Construction cost comparison of automated garage versus conventional garage. Note poor efficiency of conventional garage because of a parking module with only a single row of stalls as well as the short site. Construction costs were estimated by a construction manager hired by the city. The total cost was nearly the same, however, because of the enhanced site improvments for the automated garage, it was selected over the conventional garage.
