MEMO DATE: March 22, 2016 PROJECT O: 4241-44 PROJECT: 1550 Alberni Street SUBJECT: Transportation Design Rationale for Rezoning Application (Update with Design Package) TO: Dave Leung, 1550 Alberni Limited Partnership FROM: Christephen Cheng, P.Eng., Bunt Associates An updated Design package is being submitted to the City of Vancouver concerning a proposed rezoning application for a mixed-use tower at 1550 Alberni Street in Vancouver, BC. The following provides a transportation design rationale that supports the updated Design package. 1. SITE LOCATIO AD EXISTIG USE For the purpose of this memorandum, the Project orth is assumed to be aligned with Cardero Street. The development site is bounded by Cardero Street to the west, Alberni Street to the north, an adjacent residential building (1500 Alberni Street) to the east, and a public laneway to the south. The development site currently accommodates an office building, with parking access located off Alberni Street, approximately 10m from the Cardero Street Alberni Street intersection. The existing office building generates approximately 40 vehicle trips per hour during the Weekday morning and afternoon peak-hour periods. East of the development site, the residential building at 1500 Alberni Street has 69 residential units, with peak-hour vehicle trips observed to be 12 and 16 vehicle trips for the Weekday morning and afternoon peak-hour periods, respectively. Accordingly the vehicle trip generation rates worked out to be 0.18 (0.24) vehicle trips per hour for the Weekday morning (afternoon) peak-hour periods. In terms of passenger pick-up/drop-off demand, there was no more than one vehicle at any given 5-minute interval. 2. PROPOSED DEVELOPMET The existing office building on the development is proposed to be demolished and be replaced with a 42- storey tower with approximately 181 units and 504 m 2 of ground floor retail use. 2.1 Vehicle Access Access to the underground parking and on-site loading for the development is proposed to be located off the public laneway along the southern edge of the site. Exhibit 1 shows the upper ground level plan indicating the access location to the underground parking and the on-site loading. The parallel alignment of the parking ramp at the lane access point will require vehicle access to/from the ramp be orientated to the west toward the Cardero Street lane opening. The proposed parking ramp design has been reviewed using the AutoTurn software. Exhibit 2 illustrates the vehicle turning paths entering and exiting the parking ramp. In addition, to ensure the proposed ramp transitions will provide sufficient ground clearance for passenger cars when navigating the parkade ramp, a 3D analysis has also been prepared to confirm that the proposed ramp transitions will not result in any operational issues with the design passenger cars. The 3D analysis is included in Exhibit 3. 2.2 Vehicle Parking Vehicle parking for the development is planned to meet or exceed the minimum requirements outlined in the City s Parking By-law. Table 1 presents the number of parking stalls required based on the City s Bylaw, along with the proposed supply. Table 1: Vehicle Parking Requirements and Proposed Supply o. of By-law Minimum Requirements Stalls Required (Min.) Stalls Provided Parking Supply Ratio Residential 26,538 m 2 181 1 per 140 m 2 GFA 190 273 1.41 per unit Commercial (Retail, Coffee Shop, Japanese Restaurant) 504 m 2-1 per 145 m 2 GFA 3 4 0.76 per 100 m 2 GFA Total 194 277 ote: Residential includes Lobbies, Elevator Lobbies, Cores, Corridors, Services and Suite Areas. A total of 277 vehicle parking stalls are planned for the development, exceeding the City s Parking By-law minimums (194 stalls). 1550 Alberni Street: Transportation Design Rationale March 22, 2016 2 110
111 S:\PROJECTS\CC\4241-44 1550 Alberni St Transportation Review\5.0 Deliverables\6.2 Final Report\Graphics\EXH 1.cdr March 2016 4241.44 Upper Level Plan Exhibit 1 Scale: TS
112 File ame 4241.44 March 22, 2016 Scale TS Parkade Entry Vehicle Path Exhibit 2 Site Plan Received from Merrick Architecture (March 22, 2016); Design Vehicle: Passenger Car; Red dash lines represent 0.5m clearance from vehicle body. bun t
S:\PROJECTS\CC\4241-44 1550 Alberni St Transportation Review\4.0 Analysis Design\4.1 ACAD\20160218_3d_ramp_analysis_v03 Exhibit 3 Parking Ramp 3D Analysis and Ground Clearance Check 4241.44 February 18, 2016 Scale TS b u n t 113
2.3 Loading Table 2 summarizes the off-street loading space requirements based on the City s By-law along with the proposed supply. Table 2: Off-street Loading Space Requirements and Proposed Supply By-law Requirements Required Loading Provided Loading Residential 26,538 m 2 181 1 Class B space for 100 to 299 units. 1 Class B Commercial (Coffee Shop, Japanese Restaurant, Retail) 504 m 2-1 Class B space for the first 465 m 2 GFA, plus 1 Class B for any portion of the next 1,860 m2. 2 Class B 2 Class B, 2 Class A Total 3 Class B 2 Class B, 2 Class A The development proposes to provide a total of 2 Class B loading spaces to be shared between the residential and commercial uses. In addition, 2 Class A loading spaces will be provided in the underground parkade to accommodate small vehicle deliveries and maintenance vehicles for the building. 2.4 Bicycle Parking Bicycle parking for the development is planned to be provided to meet the City s By-law minimum requirements. Table 3 summarizes the bicycle parking requirements based on the City s By-law. Table 3: Bicycle Parking Requirements By-law Requirements Required Bicycle Parking Class A Class B Residential 26,538 m 2 181 Class A: 1.25 spaces for every unit; Class B: 6 spaces for any development containing a minimum of 20 units. 226 6 Commercial (Coffee Shop, Japanese Restaurant, Retail) 504 m 2 - Class A: 1 space for each 500 sq m GFA. Class B: 6 spaces for any development containing a minimum of 1,000 sq m GFA. 1 6 Total - 227 12 A total of 227 Class A and 12 Class B bicycle parking spaces are required for the development. There needs to be 1 locker for each gender to be provided for the required commercial Class A bicycle space. However, no shower facility or washing closet would be required. 1550 Alberni Street: Transportation Design Rationale March 22, 2016 6 2.5 et Change in Vehicle Trips In terms of the net change in vehicle trips from the proposed development, using the observed vehicle trip rates form the adjacent residential building at 1500 Alberni Street, the residential units proposed for the development is expected to generate approximately 35 to 45 vehicle trips per hour during the Weekday AM and PM peak-hour periods. Vehicle trips associated with the proposed retail use are anticipated to occur mostly outside of the peak-hour periods. Comparing to the vehicle trip generation from the existing office building on-site (40 vehicle trips in the peak-hour periods), the proposed development is anticipated to generate a negligible increase in vehicle trips so it will have no material impact to the traffic operation of the street network. 3. SUMMARY The proposed vehicle access for the development is proposed to be located off the public laneway along the southern edge of the site. The proposed development provides vehicle and bicycle parking that meets or exceeds the City s Parking By-law minimum requirements. Loading supply for the development is 1 Class B space short from the By-law minimums. However, 2 additional Class A loading spaces are planned in the underground parkade to accommodate small vehicle deliveries and maintenance vehicles. In terms of vehicle impact, the development will result in negligible increase in vehicle trips comparing to the vehicle trips observed from the existing office building on-site and therefore will have no material impact to the traffic operation of the street network. 1550 Alberni Street: Transportation Design Rationale March 22, 2016 7 114