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Home My WebLink AboutBLOCK 21 REPLAT OF LOTS 24-39 CIVIC CENTER PARKING STRUCTURE - Filed GC-GENERAL CORRESPONDENCE - 2003-05-28Mark McCallum - Re: 4-CORNERS PRC"c:CTS Page 1 From: Mark McCallum To: Cam McNair, Dave Stringer, Mark Sears, Matt Bak... Subject: Re: 4-CORNERS PROJECTS I hope everyone had a Merry Christmas! This email is in response to the 4-Corners Project MTG. on December 23rd. In that meeting we discussed requirements that need to be completed by the parking structure and the courthouse before construction. The requirements are as follows: 1. Development Construction Permit 2. Inspection Fees paid 3. Revised Construction Schedule 4. Applicant Signature on the DCP 5. Erosion Control Deposit paid 6 Encroachment Permit applied for and paid 7. An Escrow for incomplete requirements will be required before C.O. 8. Utility Plans signed 9. All permit fees paid 10. Licence sub -contractors of Hensel -Phelps that are building within the City R.O.W. (This would be for the Courthouse only). 11. Plat filed Here is a list of things we need to be aware of: 1. Coordinate the patching design shown on the plans (Mark M, Rick, and Todd). 2. Contact Stormwater about their Mountain Avenue project. 3. Coordinate the design of Laporte Ave. with Todd, Stormwater and the Courthouse project so the inspector is aware of any changes to the design. 4. Start to work with the railroad for improvements in this area. 5. The big picture (SOS and ENG) for offsite improvements unrelated to any of the 4-corners projects. 6. "Constructibility" of the Parking Structure and Courthouse (Todd, we can sit down and go through the projects). 7. Howes Street design and repair? This is still somewhat of a question. Let me know if I left anything out. --Mark MEMORANDUM WALKER Page 3 of 5 4W ARKiNc CONSULTANTS October 28, 1998 Parking Stall/Aisle Dimensions A full-scale field mock-up of the recommended parking geometrics was performed on June 25, 1998 in the parking lot at the City of Fort Collins streets department. Members of the design team and City of Fort Collins parking, transportation, and engineering staff observed the field test. The asphalt was painted with 75-degree parking stalls and 90-dgree parking stalls, as proposed for the new parking structure. Stall widths were varied from 8'6" to 9'0". A bumper -to -bumper parking module width of 57'0" was used for the 75 degree parking and a parking module width of 60'0" was used for the 90-degree parking stalls (a parking module consists of two rows of parking with a drive aisle between). A full-size passenger car and an LTVU were parked on either side of a vacant stall, and a GMC Suburban then maneuvered into the vacant stall. Based upon that test, it was determined that an 8'6" stall was adequate for the 75-degree angle parking, while a 9'0" stall should be used for the 90-degree parking stalls.`' �- REQUESTED MODIFICATIONS TO FORT COLLINS LAND USE CODE The Fort Collins Land Use Code specifies parking stall and aisle dimensions for different angles of park (0, 30, 60 and 90-degrees). The stall and aisle dimensions also depend upon whether the parking will be utilized for short- term, high turnover parking or long-term, employee parking. The parking industry defines short-term parking as a duration of less than 3 hours. High turnover consists of 4-5 vehicles utilizing one parking space in a day (12 to 16-hour period). The Civic Center Parking Structure parking layout consists of 90-degree parking and two-way traffic on a 6% sloped ramp at the East side of the structure, with two flat parking modules on the West side consisting of 75- degree parking and one-way traffic (see attached Figure 1). The parking module provided for 90-degree parking is 60 feet. This dimension provides for a 24-foot drive aisle with an 18-foot stall length on each side of the drive aisle. The stall width for 90-degree parking is 9'0". The parking module provided for 75-degree parking is 574" which provides for a 20-foot drive aisle and stall projection of 18'8" on each side of the drive aisle. The stall width for the 75-degree angle parking varies from 8'8" to 8'10". During the daytime, levels 2, 3, and 4 of the Civic Center parking structure will be designated for long-term, employee parking. Levels 1 will be designated for short-term parking while overflow short-term parking will be available on the roof (level 5). However, in the evening, all of the parking spaces in the structure will be available for short-term parking. 90-Degree Parking Layout The Fort Collins Land Use Code (LUC) specifies a 9-foot wide by 19-foot long stall for short-term parking with a 24-foot wide drive aisle for a 90-degree parking layout. The LUC-required parking module width is then 62-feet versus the 60-foot module provided in our design. Modification #1: We respectfully request a modification to the short-term parking requirements to allow an 18-foot stall length iin lieu of a 19-foot stall length for 90-degree parking. The required parking module width would then be 60 feet. We believe this request is justifiable based upon the following: a) Approximately 98% of the passenger cars, light trucks, vans and sport -utility vehicles on the road today are: under 18-feet long. b) The parking stall lines will be painted 2 feet shorter than the actual stall length to encourage patrons to pull farther into the stall. c) The industry standard indicates the parking dimensions should be based upon the size of the 85" percentile vehicle which is 6'Y wide by 167' long. d) The stall width and door opening clearance are more important issues for short term parking than stall length. We are meeting the Land Use Code requirement for a 9-foot stall width. e:198381documents19838 pkg-dim2- 26oct98.doc MEMORANDUM WALKER Page 4 of 5 _AwPARKING CONSULTANTS October 28, 1998 Parking Stall/Aisle Dimensions e) The parking industry standards for 90-degree, short-term parking consist of an 87' stall width by 18-feet long with a 24-foot drive aisle in a 60-foot parking module. We are providing a 9'0" by 18'0" stall with a 24-foot drive aisle for 90-degree parking. Angle Parking Layout The Civic Center Parking Structure also includes 75-degree angle parking with one way traffic in the two west parking modules. One-way traffic is utilized in order to avoid internal traffic conflicts at the end cross -over aisles, thereby minimizing the accident potential, and increasing the ease of use and safety of the facility for both pedestrians and vehicles. Also, because a narrower drive aisle is utilized with angle parking, we are able to create a pedestrian safe zone consisting of a 3-foot wide walkway at the front of the angled stalls, without exceeding typical spans required for precast concrete structural systems. For 75-degree angle, short-term parking, the Land Use Code specifies a 9'0" by 19'0" stall with a 24-foot drive aisle. When the footprint of the stall is rotated to the 75-degree angle, the stall projects into the drive aisle approximately 21'5". Therefore, the LUC requires a 66'10" parking module for 75-degree parking versus the 57- foot module provided. Modification #2: We respectfully request approval of a modification to the Land Use Code for a 17-foot stall length in lieu of the 19-foot stall length for short-term, angled parking. We feel this request is justifiable based upon the following: a) Approximately 90% of the vehicles on the road today are less than 17-feet long. b) The parking stall lines will be painted 2 feet shorter than the actual stall length to encourage patrons to pull farther into the stall. c) The industry standard indicates the parking dimensions should be based upon the size of the 85cn percentile vehicle which is 6'3" wide by 167' long. Modification #3: We respectfully request approval of a modification of the drive aisle width from 24 feet to 20 feet for 75-degree parking with one-way traffic, and to 16-feet for 60-degree parking with one-way traffic. We feel this request is justifiable based upon the following: a) The traffic engineering standard for the width of a one-way traffic lane is 12 feet. We believe the Land Use Code requirement of 24-feet was intended for two-way traffic. There appears to be no provision in the Land Use Code for the width of a one-way traffic aisle. b) It is much easier to maneuver into an angled parking stall than a 90-degree stall. Therefore, the drive aisle width required for angle parking can be much less than for 90-degree parking. c) The parking industry standard aisle width required for maneuverability into a 75-degree angle parking stall is 20 feet, and 16 feet for 60-degree angle parking. d) It is statistically highly improbable that two design vehicles or larger will be parked across the drive aisle from each other, or that two, large vehicles will be parked on either side of a vacant stall, which would adversely affect the maneuverability into the stall. There is better than a 95% probability that the actual width available between parked vehicles will be larger than the requested minimum drive aisle width. e) Since the vehicle is narrower and shorter than the stall dimensions, the actual projection of the vehicle will be significantly shorter than the stall projection. Since it is the vehicle projection itself that impacts the available width of the drive aisle, not the stall projection, there is a margin of error provided by using the stall projection. f) The field test that was performed to evaluate the parking geometrics for this project, indicated satisfactory maneuverability was achieved at these aisle widths for a GMC suburban. e:198381documentsO838 pkg-dim2- 26oct98.doc MEMORANDUM WALKER Page 5 of 5 _AWPARKING CONSULTANTS October 28, 1998 Parking Stall/Aisle Dimensions Modification #4: We respectfully request approval of a modification of the stall width for short-term, angled parking from 9'0" to 8'8". We feel this request is justified based upon the following: a) The industry standard width for short-term parking is 87'. Approximately 44% of the stalls will be 9'0" wide, another 17% will be 810". About 2% of the stalls comprise handicap parking and the remaining 37% of the stalls will be at least 8'8" wide. b) Because it is easier to maneuver into an angled parking stall, chances are that the vehicle will be positioned more closely to the center of the stall than for 90-degree parking. c) Double line stripes will be used for the parking stall striping to assist parkers with aligning their vehicles in the center of the stall. d) The field test that was performed to evaluate the parking geometrics for this project, indicated satisfactory maneuverability was achieved at an 8'6" stall width for a GMC suburban. With approval of an 8'8" by 17'0" stall for 75-degree parking and a 20-foot drive aisle, the required parking module will then be 57'4". Figure 1 illustrates that these dimensions are achieved in our design. For comparative purposes, the parking dimensions in the existing City of Fort Collins parking structure at the corner of Remington and Mountain consist of 8'4" wide stalls at a 65-degree angle of park. The parking module (bumper -to -bumper) width is 53'4". Assuming a 17-foot stall length (stall projection at 65 degrees is approximately 18' 11"), the drive aisle width is approximately 15'4" for one-way traffic. These dimensions are consistent with current parking industry standards for long-term parking. REMARKS The granting of the requested modifications will not impair the public good nor impair the intent and purposes of the Land Use Code which is to provide parking facilities that are safe, functional, and easy to use. Walker has designed over 3000 parking structures across the United States that safely and functionally meet the needs of millions of people as attested by the owners and customers of those facilities. Since this project addresses an important community need for parking in the Civic Center complex, which is an important element of the City's Comprehensive Plan for this area of the city, we believe that it is in the public interest to grant the modifications requested herein. Therefore, we respectfully request your favorable approval of these modifications. We remain available to answer any further questions that you may have e:19 Mdocuments19838 pkg-dim2- 26oct98.doc Mark McCallum - Courthouse/Parking St `ure Page 1 From: Ted Shepard To: Bob Blanchard, Gregory Byrne, Jack Gianola, Kat... Date: 11 /:30/98 10:45AM Subject: Courthouse/Parking Structure We have scheduled a brief update for the Growth Management Lead Team to discuss some issues with the off -site improvements related to the Larimer County Courthouse and City Parking Structure. These items are scheduled for the December 17th P & Z. Like the Larimer County Jail Expansion, the development review process has identified some pedestrian improvements that are logically related to these two projects. The County, however, has indicated that our requests are 'but of the scope of their project." So, the purpose of the update is to alert the G.M.L.T. of what the issues are and where we stand. Thanks, Ted. MEMORANDUM Page 1 of 5 DATE: November 16, 1998 TO: Brian H. Chaffee COMPANY: Fentress Bradburn Architects ADDRESS: 421 Broadway CITY/STATE: Denver CO 80203 CC: Allan Bliesmer, Hensel Phelps FROM: Donald R. Monahan, PE PROJECT NAME: Civic Center Parking Structure, Fort Collins, CO PROJECT NUMBER: 23-6602.00 SUBJECT: Parking Stall/Aisle Dimensions WALKER -ARKING CGN5L..TANTS WALKER PARKING CONSULTANTS 5350 S. Roslyn Street, Suite 220 Englewood, CO 80111 Voice: 303.694.6622 Fax: 303.694.6667 www.walkerparking.com The purpose of this memorandum is to discuss the rationale behind the design of the parking stall and aisle dimensions for the referenced parking structure, and note any deviations of that design rationale from the City of Fort Collins Land Use Code. We request that the City of Fort Collins grant a modification to the parking dimensional standards in the existing Land Use Code for this project based on the design rationale presented herein. BACKGROUND The parking space dimensions are based upon the following publications: 1. Recommended Guidelines for Parking Geometrics, by the Parking Consultants Council of the National Parking Association, Washington, DC, August 1989. 2. Guidelines for Parking Facility Location and Design, by the Institute of Transportation Engineers, Washington, DC, May 1990. 3. The Dimensions of Parking, Third Edition, by the Urban Land Institute and National Parking Association, Washington, DC, 1993. 4. Parking, by Robert A Weant and Herbert S. Levinson, Eno Foundation for Transportation, Westport, Connecticut, 1990. 5. Parking Structure: Planning, Design, Construction, Maintenance and Repair, Second Edition, by Anthony P. Chrest, Mary S. Smith, and Sam Bhuyan, Walker Parking Consultants/Engineers, Inc., 1996. The information contained in the above publications is collectively referred to herein as the parking industry standards. Design Vehicle The parking dimensions in the above publications are based on the design vehicle which is the size of the vehicle representing the 851h percentile largest passenger vehicle in use. Walker Parking Consultants (Walker) has been tracking automobile sales for each car model since 1976. The 851h percentile design vehicle based upon that data (through 1996) is 6'1" wide by 16'8" long, or about the size of a Mercury Sable c:lwindowsWesktoplpkg-dim2 (2).doc MEMORANDUM WALKER ,. Page 2 of 5 �ARKINC CON&MANTS November 16, 1998 Parking Stall/Aisle Dimensions Walker has also tracked sales for light trucks, vans, and utility vehicles since 1987. LTVU's are generally wider than passenger cars. While trucks are a little longer, vans are approximately the same length as passenger cars, and sport utility vehicles (SUV) are shorter than the automobile design vehicle. The design vehicle for light trucks is 6'6" wide by 16'10" long, or about the size of a Ford F150 pickup truck. The design vehicle for vans is 6'Y by 16'8". The design vehiclE� for SUVs is 6'4" by 15'10" or about the size of the Toyota Land Cruiser. When the mix of automobiles and light trucks is considered, the design vehicle inches up in width but down in length to 6'Y wide by 167' long, or about the size of a Ford Windstar minivan. The GMC suburban is one of the largest passenger vehicles at 6'8" wide by 18'Y long. However, compact vehicles (less than 15-feet long) represent approximately 45% of vehicle sales since 1980. Stall Width The stall width is determined by adding half of the required door opening clearance to each side of the design vehicle (Note: Half of the door opening clearance is "borrowed" from the adjacent stall, except when the stall is adjacent to a wall). Parking industry standards indicate that a door opening clearance of approximately 24" is adequate for short-term, high -turnover parking, and a door opening clearance of 20" is adequate for long term, employee parking. Based upon the size of the current composite design vehicle, a stall width of 8'Y is calculated for short-term parking, and a stall width of 7'11" is calculated for long-term parking. Local Vehicle Mix The foregoing analysis assumes that the mix of vehicles in Fort Collins is consistent with the national mix of vehicles on the road. This assumption is not necessarily true. Therefore, Walker performed a field survey on June 25, 1998 of the vehicles in the existing parking lot at the site of the proposed parking structure to determine the mix of compact cars, Full size cars, and light trucks at this location. The results are as follows: Compact Vehicles Cars 66 38% LTVU's 14 8% >ubtotal 80 46% Full Size Vehicles Cars 29 17% LTVU's 64 37 % Subtotal 93 54% Nationally, there are approximately 28% LTVU's registered (see enclosed newspaper article), while in the state of Colorado there are approximately 35% LTVU's registered. Approximately 45% LTVU's were observed utilizing the existing parking lot. Therefore, the number of LTVU's in Fort Collins is well above the national average as well as above the average for the state of Colorado. The amount of compact vehicles is very close to the national average. Therefore, a slight increase in the width of the design vehicle should be made (to 6'6"), with a corresponding increase in the recommended stall width (to 8'6" for short-term parking). Field Test A full-scale field mock-up of the recommended parking geometrics was performed on June 12, 1998 in the parking lot at the City of Fort Collins streets department. Members of the design team and City of Fort Collins parking, transportation, and engineering staff observed the field test. The asphalt was painted with 75-degree c:lwindowsWesktoplpkg-dim2 (2).doc MEMORANDUM WALKER Page 3 of 5 PARKING CONSULTANTS November 16, 1998 Parking Stall/Aisle Dimensions parking stalls and 90-degree parking stalls, as proposed for the new parking structure. Stall widths were varied from 8'6" to 9'0". A bumper -to -bumper parking module width of 57'0" was used for the 75-degree parking and a parking module width of 60'0" was used for the 90-degree parking stalls (a parking module consists of two rows of parking with a drive aisle between). A full-size passenger car and an LTVU were parked on either side of a vacant stall, and a GMC Suburban then maneuvered into the vacant stall. Based upon that test, it was determined that an 8'6" stall was adequate for the 75-degree angle parking, while a 9'0" stall should be used for the 90-degree parking stalls. REQUESTED MODIFICATIONS TO FORT COLLINS LAND USE CODE The Fort Collins Land Use Code specifies parking stall and aisle dimensions for different angles of park (0, 30, 60 and 90-degrees). The stall and aisle dimensions also depend upon whether the parking will be utilized for short- term, high -turnover parking or long-term, employee parking. The parking industry defines short-term parking as duration of less than 3 hours. High turnover consists of 4-5 vehicles utilizing one parking space in a day (12 to 16-hour period). The Civic Center Parking Structure parking layout consists of 90-degree parking and two-way traffic on a 6% sloped ramp at the East side of the structure, with two flat parking modules on the West side consisting of 75- degree parking and one-way traffic (see attached drawings). The parking module provided for 90-degree parking is 60 feet. This dimension provides for a 24-foot drive aisle with an 18-foot stall length on each side of the drive aisle. The stall width for 90-degree parking is 8'10-1/2" minimum between shear walls at the West Side of the sloped ramp (16% of 90-degree stalls), although a stall width of 9'0" is provided for the 90-degree stalls in other areas. The parking module provided for 75-degree parking is 557' in the middle bay adjacent to the pedestrian walkway, and 57'0" in the Far West bay. These parking module dimensions provide for a 20-foot drive aisle in the west bay and an 18'3" drive aisle in the middle bay with respect to the stall projection of 18'8" on each side of the drive aisle. With respect to the actual vehicle projection (the design vehicle is smaller than the stall), a minimum aisle width of 20 feet is provided. The stall width for the 75-degree angle parking varies from 8'8" to 9'0". During the daytime, levels 2, 3, and 4 of the Civic Center parking structure will be designated for long-term, employee parking. Levels 1 will be designated for short-term parking while overflow short-term parking will be available on the roof (level 5). However, in the evening, all of the parking spaces in the structure will be available for short-term parking. 90-Degree Parking Layout The Fort Collins Land Use Code (LUC) specifies a 9-foot wide by 19-foot long stall for short-term parking with a 24-foot wide drive aisle for a 90-degree parking layout. The LUC-required parking module width is then 62 feet versus the 60-foot module provided in our design. Modification #1: We respectfully request a modification to the short-term parking requirements to allow an 18-foot stall length in lieu of a 19-foot stall length for 90-degree parking. The required parking module width would then be 60 feet. We believe this request is justifiable based upon the following: --a) Approximately 98% of the passenger cars, light trucks, vans and sport -utility vehicles on the road today are: under 18-feet long. b) The parking stall lines will be painted 2 feet shorter than the actual stall length to encourage patrons to pull farther into the stall. _ c) The industry standard indicates the parking dimensions should be based upon the size of the 85`n percentile vehicle in use in Fort Collins which is 6'6" wide by 16'6" long (requires 8'6" by 16'6" stall). c:WndowsWesktoplpkg-dim2 (2).doc MEMORANDUM Page 4 of 5 November 16, 1998 Parking Stall/Aisle Dimensions WALKER PARKING CONSULTANTS d) The stall width and door opening clearance are more important issues for short term parking than stall length. We are meeting the Land Use Code requirement for a 9-foot stall width for 84 percent of the 90-degree stalls. e) The parking industry standards for 90-degree, short-term parking consist of an 8'6" stall width by 17-feet long with a 24-foot drive aisle in a 58-foot parking module. We are providing a 9'0" by 18'0" stall with a 24-foot drive aisle (60-foot parking module) for 90-degree parking. Angle Parking Layout The Civic Center Parking Structure also includes 75-degree angle parking with one way traffic in the two west parking modules. One-way traffic is utilized in order to avoid internal traffic conflicts at the end crossover aisles, thereby minimizing the accident potential, and increasing the ease of use and safety of the facility for both pedestrians and vehicles. Also, because a narrower drive aisle of 18'3" is utilized with angle parking, we are able to create a pedestrian safe zone consisting of a 3-foot wide walkway at the front of the angled stalls, without exceeding typical spans required for precast concrete structural systems. For 75-degree angle, short-term parking, the Land Use Code specifies a 9'0" by 19'0" stall with a 24-foot drive aisle. When the footprint of the stall is rotated to the 75-degree angle, the stall projects into the drive aisle approximately 21'5". Therefore, the LUC requires a 66'10" parking module for 75-degree parking versus the 57- foot module provided. Modification #2: We respectfully request approval of a modification to the Land Use Code for a 17-foot stall length in lieu of the 19-foot stall length for short-term, angled parking. We feel this request is justifiable based upon the following: a) Approximately 90% of the vehicles on the road today are less than 17-feet long. b) The parking stall lines will be painted 2 feet shorter than the actual stall length to encourage patrons to pull farther into the stall. c) The industry standard indicates the parking dimensions should be based upon the size of the 85tn percentile vehicle, which is 6'6" wide by 16'6" long in Fort Collins. W. $T �+G.7i01�%• Modification #3: We respectfully request approval of a modification of the drive aisle width from 24 feet to 18' 3" feet for 75-degree parking with one-way traffic, and to 16-feet for 60-degree parking with one-way traffic. We feel this request is justifiable based upon the following: a) The traffic engineering standard for the width of a one-way traffic lane is 12 feet. We believe the Land Use Code requirement of 24-feet was intended for two-way traffic. There appears to be no provision in the Land Use Code for the width of a one-way traffic aisle. b) It is much easier to maneuver into an angled parking stall than a 90-degree stall. Therefore, the drive aisle width required for maneuvering into an angled parking stall can be much less than for 90-degree parking. c) The parking industry standard aisle width required for maneuverability into a 75-degree angle - parking stall is 18 feet, and 14 feet for 60-degree angle parking. By way of comparison, the drive aisle width for the 65-degree angle parking stalls in the Old Town parking structure in Fort Collins is 15'4". d) A Walker study for Schaumburg, Illinois (available on request) indicated that it is statistically highly improbable that two design vehicles or larger will be parked across the drive aisle from each other. Similarly, it is highly improbable that two, large vehicles will be parked on either side of a vacant stall, which would adversely affect the maneuverability into that stall. Because of the random distribution of vehicles smaller than the design vehicle, there is better than a 95% c:Wndows1desktopWkg-dim2 (2).doc MEMORANDUM Page 5 of 5 November 16, 1998 Parking Stall/Aisle Dimensions WALKER PARKING CONSULTANTS probability that the actual width available between parked vehicles will be larger than the design minimum drive aisle width. e) Since the: vehicle is narrower and shorter than the stall dimensions, the actual projection of the vehicle will be significantly shorter than the stall projection. Since it is the vehicle projection itself that impacts the available width of the drive aisle, not the stall projection, there is a margin of error provided by using the stall projection. The aisle width increases approximately two feet when compared to the actual projection of the 85th percentile design vehicle. f) The field test that was performed to evaluate the parking geometrics for this project indicated satisfactory maneuverability was achieved at these aisle widths for a GMC suburban. Modification #4: We respectfully request approval of a modification of the stall width for short-term, angled parking from 9'0" to 8'8". We feel this request is justified based upon the following: a) The industry standard width for short-term parking is 8'6". Approximately 44% of the stalls will be 9'0" wide. Another 17% will be 8'10" wide. About 2% of the stalls are oversized for handicap parking and the remaining 37% of the stalls will be at least 8'8" wide. Therefore, 63% of the stalls are 8'10" or wider. By way of comparison, the Old Town parking structure in Fort Collins has 8'4" wide stalls. b) Because it is easier to maneuver into an angled parking stall, field studies by Walker indicate that the vehicle will be positioned more closely to the center of the stall than for 90-degree parking. Therefore, angle -parking stalls can be narrower than 90-degree parking stalls. ��S c) Double line stripes will be used for the parking stall striping to assist p�erS w tY� aligning their vehicles in the center of the stall. d) The field test that was performed to evaluate the parking geometrics for this project indicated satisfactory maneuverability was achieved at an 8'6" stall width for a GMC suburban. With approval of an 8Y by 17'0" stall for 75-degree parking and an 18'3" drive aisle, the required parking module will then be 557'. The attached drawings illustrate that these dimensions are achieved in our design. REMARKS The granting of the requested modifications will not impair the public good nor impair the intent and purposes of the Land Use Code which is to provide parking facilities that are safe, functional, and easy to use. Walker has designed over 3000 parking structures across the United States that safely and functionally meets the needs of millions of people as attested by the owners and customers of those facilities. Since this project addresses an important community need for parking in the Civic Center complex, which is an important element of the city's Comprehensive Plan for this area of the city, we believe that it is in the public interest to grant the modil=ications requested herein. Therefore, we respectfully request your favorable approval of these modifications. We remain available to answer any further questions that you may have. c:WndowsWesktoplpkg-dim2 (.?).doc b: S:2Ar 1 r kUt 1 C 1 I YSCAPE 910 226 4196 P. 2 July 28, 1998 Steve Olt Project Planner Planning Department City of Fort Collins 281 N. College Fort Collins, CO 80524 RE: Civic Center Parking Structure Application Submittal Dear Steve: CkY5@@P* urban design, Inc. 3555 stanford road, suite 105 fort Collins, colorado 80525 (970) 226-4074 FAX t970) 226-4196 E-mail: cityscap@frii.com The purpose of this letter is to explain the present status of two items required with this application. These items — a traffic study and a list of owners and applicants — are either in progress or otherwise available within various City departments. The Transportation Impact Analysis is in progress for a larger study area including the subject site. Our understanding is that early drafts of this document have been circulated within certain department within the City. Expectations of Jack Gianola, the Project Manager, are to have this study in draft from shortly — copies should be forwarded to you upon receipt. The list of names of all general and limited partners and/or officers involved as either applicants or owners is available if necessary from Jack Gianola_ The sole owner/applicant of this project is the City of Fort: Collins. Please accept this letter in lieu of these items for this submittal. If you have any questions or concerns regarding this application, please do not hesitate to contact Jack Gianola (221-6611) or myself. Sincerely, Eldon Ward Cityscape Urban Design, Inc. ...... Mark McCallum - Re: Civic Center Par' . q Structure Page 1 From: Susanne Edminster To: Mark McCallum Date: 9/ 18/98 10:OOAM Subject: Re: Civic Center Parking Structure Mark, right now my best estimate is that the second and third floors will be reserved for permit parking Monday through Friday 8 AM to 6 PM. Hourly parking will be on 1 st, 4th, and the partial upper deck. After 6 PM and on weekends, parking is not restricted by floor. Does this help? I'd be happy to provide more info if needed. Susanne >>> Mark McCallum 09/18/98 09:16AM >>> This email is regarding the parking classifications for the Civic Center Parking Structure. I am interested in finding out how many parking spaces will be considered long-term and short-term? Will there be different floor designations or will there be a mix of both on one floor? This may be clarified when I receive the floor plan for each floor, but until than I would like to get an idea. Thank you, Mark McCallum Engineering Department 432 Link Lane Plaza lk Coli`ns Colorado 80524 �970] Z21-Z400 - - - Fl _ - ► CORO REMOVAL ■�MATCH EXISTING -41 BEGIN tREMOVAi - i ■ LOT 1 1.921 ACRES s �■nr 1 BLDG GRID LINE 15iLIGHT t• ■STRL • NOTE: BUILDING3 NTH NORTH PROPERTY r ■t, URTH • i 1 —r 1 1 4. 1 di iY �IL I r ESTRIAN 13LDG GRIDLINE N .� i ii M iYi iissi ■ f [�+�a O LEI fil is 173.1 r� ■ s� I ke, fk� Its C 4eerw% 3- to rs Aof Ael 4r AZS r ApoP esllix— p t44. n400-e-T 440w.. 1Xr otl,�r r �P. a*,:t /1)s.✓d'•�,j ft»y` FENTRESS BRADBURN ARCHITECTS, LTD. ARCHITECTURE, INTERIORS, PLANNING October 28, 1998 Mr. Steve Olt CITY OF FORT C'OLLINS PLANNING DEPARTMENT 281 North College P.O. Box 580 Fort Collins, CO 80522-0580 Re: Civic Center Parking Structure Land Use Code Modification Request for parking dimension revisions Project 9838.000 Dear Steve: Pursuant to our recent discussions please find enclosed the Modification Request for the Land Use Code provisions for parking stall layouts for application in the Civic Center Parking Structure. We have attached a narrative description identifying some parking standard background information, standard vehicle design criteria, stall width design criteria and the actual modifications and clarifications requested. We have also attached the stall layout plans which incorporate the dimensions we are proposing for modification. Steve, as we discussed on the telephone, we would like to meet with yourself and the other key staff members from the Engineering and Transportation departments to answer any questions you may have. We will be in contact with you shortly to confirm the actual time of the meeting. As always, should you have any comments or questions please feel free to contact us. Sincerely, FENTRESS BRADBURN ARCHITECTS, LTD. Brian Chaffee, AIA Associate Principal BC/dt cc: Jack Gianola, Fort Collins, Facilities Department Susanne Edminster, Fort Collins, Transportation Department Allan Bliesmer, Hensel Phelps Construction Company Don Monahan, Walker Parking Consultants, Inc. Alexa Taylor, Fentress Bradburn Architects, Ltd. Encl: Walker Memorandum, dated October 28, 1998 Striping plans G1.1, G1.2 and G1.3, dated October 28, 1998 421 BROADWAY DENVER, COLORADO 80203 303-722-5000 FAX: 303-722-5080 www.fentressbradburn.com MEMORANDUM Page 1 of 5 DATE: October 28, 1998 TO: Brian H. Chaffee COMPANY: Fentress Bradburn Architects ADDRESS: 421 Broadway CITY/STATE: Denver CO 80203 CC: Allan Bliesmer, Hensel Phelps FROM: Donald R. Monahan, PE PROJECT NAME: Civic Center Parking Structure, Fort Collins, CO PROJECT NUMBER: 23-6602.00 SUBJECT: Parking Stall/Aisle Dimensions WALKER PARKING CONSULTANTS WALKER PARKING CONSULTANTS 5350 S. Roslyn Street, Suite 220 Englewood, CO 80111 Voice: 303.694.6622 Fax: 303.694.6667 www.walkerparking.com The purpose of this memorandum is to discuss the rationale behind the design of the parking stall and aisle dimensions for the referenced parking structure, and note any deviations of that design rationale from the City of Fort Collins Land Use Code. We request that the City of Fort Collins grant a modification to the parking dimensional standards it the existing Land Use Code for this project based on the design rationale presented herein. BACKGROUND The parking space dimensions are based upon the following publications: 1. Recommended Guidelines for Parking Geometrics, by the Parking Consultants Council of the National Parking Association, Washington, DC, August 1989. 2. Guidelines for Parking Facility Location and Design, by the Institute of Transportation Engineers, Washington, DC, May 1990. 3. The Dimensions of Parking, Third Edition, by the Urban Land Institute and National Parking Association, Washington, DC, 1993. 4. Parking, by Robert A Weant and Herbert S. Levinson, Eno Foundation for Transportation, Westport, Connecticut, 1990. 5. Parking Structure: Planning, Design, Construction, Maintenance and Repair, Second Edition, by Anthony P. Chrest, Mary S. Smith, and Sam Bhuyan, Walker Parking Consultants/Engineers, Inc., 1996. The information contained in the above publications is collectively referred to herein as the parking industry standards. Design Vehicle The parking dimensions in the above publications are based on the design vehicle which is the size of the vehicle representing the 851h percentile largest passenger vehicle in use. Walker Parking Consultants (Walker) has been e:198381documents19838 pkg-dim2- 26oct98.doc MEMORANDUM WALKER Page 2 of 5 DARKING CONSULTANTS October 28, 1998 Parking Stall/Aisle Dimensions tracking automobile sales for each car model since 1976. The 85th percentile design vehicle based upon that data (through 1996) is 6'1" wide by 16'8" long, or about the size of a Mercury Sable. Walker has also tracked sales for light trucks, vans, and utility vehicles since 1987. LTVU's are generally wider than passenger cars. While trucks are a little longer, vans are approximately the same length as passenger cars, and sport utility vehicles (SUV) are shorter than the automobile design vehicle. The design vehicle for light trucks is 6'6" wide by 16'10" long, or about the size of a Ford F150 pickup truck. The design vehicle for vans is 6'Y by 16'8". The design vehicle for SUVs is 6'4" by 15'10" or about the size of the Toyota Land Cruiser. When the mix of automobiles and light trucks is considered, the design vehicle inches up in width but down in length to 6'Y wide by 167' long, or about the size of a Ford Windstar minivan. The GMC suburban is one of the largest passenger vehicles at 6'8" wide by 18'Y long. However, compact vehicles (less than 15-feet long) represent approximately 45% of vehicle sales since 1980. Stall Width The stall width is determined by adding half of the required door opening clearance to each side of the design vehicle (Note: Half of the door opening clearance is "borrowed" from the adjacent stall, except when the stall is adjacent to a wall). Parking industry standards indicate that a door opening clearance of approximately 24" is adequate for short-term, high -turnover parking, and a door opening clearance of 20" is adequate for long term, employee parking. Based upon the size of the current composite design vehicle, a stall width of 87' is recommended for short term parking, and a stall width of 8'Y is recommended for long term parking. Local Vehicle Mix The foregoing analysis assumes that the mix of vehicles in Fort Collins is consistent with the national mix of vehicles on the road. This assumption is not necessarily true. Therefore, Walker performed a field survey on June 25, 1998 of the vehicles in the existing parking lot at the site of the proposed parking structure to determine the mix of compact cars, full size cars, and light trucks at this location. The results are as follows: Compact Vehicles. Cars 66 38% LTVU's 14 8% Subtotal 80 46% Full Size Vehicles Cars 29 17% LTVU's 64 37% Subtotal 93 54% Nationally, there are approximately 28% LTVU's registered (see enclosed newspaper article), while in the state of Colorado there are approximately 35% LTVU's registered. Approximately 45% LTVU's were observed utilizing the existing parking lot. Therefore, the number of LTVU's in Fort Collins is well above the national average as well as above the average for the state of Colorado. The amount of compact vehicles is very close to the national average. Therefore, a slight increase in the width of the design vehicle should be made, with a corresponding increase in the recommended stall width. Field Test e:08381documentsO838 pkg-dim2- 26oct98.doc