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HomeMy WebLinkAboutFIRST COMMUNITY BANK PLAZA - PDP - 49-05 - SUBMITTAL DOCUMENTS - ROUND 2 - VARIANCE REQUESTO R-, k) Wd'.#Ut� ow AAA) M ArluovV6-F-k Occu fc., (0- OoS �(` to c4fvbw c� /C (0_0083�Co.s-9oz> = 0.004g 6 9Y 20 WeAit ouJ> = O . 5 i=- 'PM ( 0 - oZ5-0)(0.38¢� = O.004(D = a 46 6 'IIA46 tti i>m Co.vo �'3�0. 2 q4-S� _ ©• oo Z 4 =O.Z¢� (0. 0024-�((ZD • a'r T* r 41%rc S �rLL %uT62 iti TAG_ AM 55- 6:0r6K Sou--rg- II-ccc-rs (•Pla P4F = d. 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S PACGS C.velf t z D 'wweew� �fZ.o$A-P�. �lNq't- Ttfr � Piai2Kr�vG 'SP�dGG E.�rT UVdUC.t7 0,cue l eJ A N y 6;;W�,o 6j ti t�,0,J 7M r 00 &-x, -i S (ge-r* A-2CGr`'SV 6 o ' 'PACGI!!3 0.1057�' too = 0.6 Z S Pi26806- OP o-vE c3pAc9 11AVI" A ,0v �KcTrUG VE-hr�eGG Q- t IAAi>ACTE17 �PAC&--S (o•�s�q� i = o.rol� � c Z. S 3 V%Hlcd,ES ¢ '0PAC.G� 0.00%3 3 �-Uer� _ ©. DZSC� �f�gAg _ Tif,�Y TcftS ��tf�KtAtxx SP 1C� �x rr wovc.D 0ccv IZ APPENDIX B A& N SCALE 111=100' SITE PLAN PMJ$1 OECORAI CALLER vALIAMWCw wt.N r «ti TOYS R US Figure 4 IN APPENDIX A impacted unless five or more vehicles enter at the same time, which is the same as if the standard was met. Therefore, these four parking spaces were not considered in this calculation. Therefore, a total of four parking spaces are impacted. Appendix B contains the calculation sheets for the following analyses. There are 120 - 30 second windows (unparking maneuver time) in each hour. Given the number of available parking spaces and the number of exits from the site (both driveways), the probability of any of the eight subject spaces having a parked vehicle that will execute an unparking maneuver is 0.0083 in the morning peak hour in any given window and 0.0250 in the afternoon peak hour in any given window. There will be 55 and 50 entering vehicles in the respective peak hours. Since it is not likely that the entering vehicles will enter the access driveway evenly spaced over the entire peak hour, a peak hour factor of 0.50 was used in this analysis. This has the effect of doubling the number of entering vehicles in the peak hour. The probability that four vehicles will enter within any 30 second window is 0.6682 in the morning peak hour and 0.3845 in the afternoon peak hour. The probability that four vehicles will enter in the same 30 second window that an unparking maneuver would occur is 0.0055 in the morning peak hour and 0.0096 in the afternoon peak hour. The potential conflict would occur 1 percent of the time in the either peak hour using the conservative input values described above. Therefore, it is expected that this conflict may occur in 0.67 = 1 of the available 120 windows in the morning peak hour and 1.15 = 1 of the available 120 windows in the afternoon peak hour. If the standard is met, the number of on -site parking spaces will be reduced, which has the effect of increasing the probability that an unparking maneuver will occur from any given parking space. By meeting the standard, the fifth entering vehicle in the same window will spill into JFK Parkway. The probability of the one subject parking space having a parked vehicle that will execute an unparking maneuver is 0.0083 in either peak hour. The number of entering vehicles remains constant. The probability that five vehicles will enter within any 30 second window is 0.5902 in the morning peak hour and 0.2948 in the afternoon peak hour. The probability that five vehicles will enter in the same 30 second window that an unparking maneuver would occur is 0.0049 in the morning peak hour and 0.0024 in the afternoon peak hour. Under this circumstance, it is expected that a conflict would occur one time in the morning peak hour and 0-1 times in the afternoon peak hour. This is only not significantly different than that which would occur with the requested variance. From this analysis, it is concluded that the parking setback of 70 feet, shown on the site plan, is not detrimental to the public health, welfare and safety. It is respectfully requested that this variance be granted. Please contact me with questions or if you require additional information regarding this variance request. Thank you. sincerely, Matthew J. Delich, P.E. December 30, 2005 File: 0592LT02 00 c*) o Dan DeLaughter 00 CO Fort Collins Engineering Department W o LO 0 0ED 6 Eric Bracke, P.E., PTOE CZ <0 Fort Collins Traffic Engineer 0 O U 0 rn Ted Shepard, Chief Planner X Fort Collins Planning Department o li P.O. Box 580 c Fort Collins, CO 80522-0580 J W JDear Dan/Eric/Ted: Wp This letter is a variance request with regard to the minimum off- E N street parking setback distance at the south access driveway for the p co First Community Bank Plaza west of JFK Parkway in Fort Collins. The w T site plan and subject area is shown in Appendix A. JFK Parkway is a Op classified as a four -lane arterial street. The south access driveway 2 will likely have a daily traffic volume in excess of 750. Therefore, w w according to Figure 19-6 in the "Larimer County Urban Area Street 0 Standards," the minimum setback to the first parking space should be N D_ 100 feet. According to the site plan, the first parking space along N N the access driveway is 50 feet from the flowline of JFK Parkway. N Compliance with the standard would eliminate six parking spaces along the south side of the access driveway. In addition to this, the first parking spaces in the parking lot to the north are 80 feet, as measured along the centerline, from the flowline of JFK Parkway. Compliance with the standard would eliminate four parking spaces (two on each side of the drive aisle) in this parking lot. Therefore, a total of ten parking spaces would be eliminated by meeting the standard. The primary reason for this parking setback distance is to not have a condition that would cause entering vehicles to back into the arterial street, thus creating a potentially hazardous condition. Uj This variance request analyzes the probability that this situation Q. would occur during the peak hours. The analysis was conducted for z both the morning and afternoon peak hours. The parking maneuver is w accomplished in a relatively short time period, requiring not more z than a few seconds. It is the unparking maneuvers, requiring V Z backing, which takes time to accomplish. For analysis purposes, it JW was assumed that an unparking maneuver takes 30 seconds to W Z accomplish, although experience would indicate that most take less Q 0 time. Therefore, the following is considered to conservative. From the site plan, there is 50 feet between the first parking space and 0 the flowline of JFK Parkway. Given Fort Collins Engineering zDepartment staff comments regarding a previous variance letter (dated ` a 12/22/05), the site plan will be changed to eliminate two of the 5 F- parking spaces along the south side of the access driveway. This UJ 06 would result in a parking setback of 70 feet from the flowline of JFK 0 Parkway. This is enough space to store three ingressing vehicles LL without spilling into JFK Parkway. The analysis assumed that the F. ¢ fourth vehicle would spill out into the right southbound lane of JFK Q H Parkway. This only impacts the parked vehicles along the access C driveway. The parked vehicles in the lot to the north are not