168 & 170 BRADFORD STREET

Transcription

1 168 & 170 BRADFORD STREET City of Barrie prepared by: C.C. Tatham & Associates Ltd. 41 King Street, Unit 4 Barrie, Ontario L4N 6B5 Tel: (705) Fax: (705) info@cctatham.com prepared for: Touchstone Overlay Systems Inc. CCTA File

2 TABLE OF CONTENTS 1 Introduction Site Description & Surrounding Land Use Proposed Development 3 2 Water Supply & Distribution Water System Fire Protection 4 3 Sanitary Sewer Collection Sanitary System Allocation 5 4 Drainage & Stormwater Management Storm Drainage System Stormwater Management 6 5 Transportation 7 6 Grading & Landscaping 8 7 Utilities 9 8 Conclusions Water Supply & Distribution Sanitary Sewage Collection Drainage & Stormwater Management 10

3 8.4 Transportation Grading & Landscaping Utilities 11 LIST OF FIGURES Figure 1: Site Location 2 APPENDICES Appendix A: Municipal Record Documents Appendix B: Sanitary Sewage Design Calculations

4 1 Introduction C.C. Tatham & Associates Ltd. (CCTA) has been retained by Touchstone Overlay Systems Inc. to provide engineering services for a proposed mixed use development of two adjoining properties located at 168 and 170 Bradford Street in the City of Barrie (City). The purpose of this report is to present an overall servicing strategy to show that the proposed development of a mixed use development can be implemented in accordance with relevant design standards in support of the site plan. This report presents a municipal servicing strategy, covering: water supply and distribution; sanitary sewage collection; drainage and stormwater management (SWM); transportation; grading and landscaping; and utility servicing. 1.1 Site Description & Surrounding Land Use The subject property is located along the west side of Bradford Street within the City of Barrie. The site consists of two properties, municipally addressed as 168 and 170 Bradford Street. The site is bordered to the south by an existing commercial use (car lot), to the west by residential lots (Sanford Street), and to the north by an existing commercial use (office). The location of the property is illustrated on the Site Location Plan (Figure 1) provided overleaf. The site consists of approximately 0.13 ha of land with a residence and accessory sheds. The site topography is generally lower than the lands to the west and north, and falls in a south-easterly direction. Page 1

5 Figure 1: Site Location Page 2

6 1.2 Proposed Development The proposed development consists of two adjacent properties which are to be merged. The combined development will include the existing building to be a mixed-use, including two commercial units and eight residential units, with a full basement. The proposed development will be serviced with municipal water and sanitary sewage collection. New driveways and a parking lot will be constructed. In addition, landscaping and fences will be improved. Page 3

7 2 Water Supply & Distribution 2.1 Water System The site is located in an area of the City which is fully serviced by the municipal water system. As such, the subject property is within the planned service area for the City s existing water system, and there is satisfactory pressure and capacity. The City Water Operations staff have been pre-consulted for this proposed development and confirmed that water supply is considered to be satisfactory. There is an existing 300 mm watermain on Bradford Street with one 19 mm existing service connection to each existing property (refer to the municipal record documents in Appendix A). These existing water service connections will be decommissioned. The proposed development will receive its water supply from a new 50 mm water service connection which will be reduced on private property to be a 38 mm water service and one water meter. City Water Operations staff have advised that a static watermain pressure in this area of Bradford Street is typically in the range of psi, which is satisfactory to support the proposed development. 2.2 Fire Protection As noted above, there is an existing watermain in Bradford Street which provides water supply and fire protection for the area including the subject development. There is an existing fire hydrant located near the northeast frontage of the site (refer to Drawing SS-1: Site Servicing Plan). The water system and fire protection elements will be confirmed by the architect and the building mechanical engineer as part of the detailed design in support of the site plan approval process. Page 4

8 3 Sanitary Sewer Collection 3.1 Sanitary System The City of Barrie is serviced with a sanitary sewer collection system that flows to the Barrie Wastewater Treatment Plant (WWTP) located just east of the development. There is an existing 250 mm sanitary sewer in Bradford Street with a 100 mm service connection to each of the existing properties (refer to the municipal record documents in Appendix A). These existing sanitary service connections will be decommissioned. The proposed development will direct its sanitary sewage to a new 150 mm service connection. A sanitary cleanout will be provided at the property frontage on private property (refer to Drawing SS-1: Site Servicing Plan). The full flow capacity of the 150 mm sanitary sewer service lateral is L/s which can accommodate the design peak flow of 3.40 L/s from the proposed development as per the table below (refer to the sanitary sewer design sheet in Appendix B). Residential Development 1 Per Unit Units Population Retirement Residence Average Day Design Criteria/Flow L/cap/day 0.09 L/s Peak Hour Factor/Flow (with infiltration) L/s 1 City of Barrie Engineering Design Criteria 2 Average day design flow includes flow from two commercial units at 28 m3/ha/day. There is satisfactory available capacity in both the existing service connection and the sanitary sewer to accommodate the proposed development. 3.2 Allocation The City will assign allocation for the proposed development subject to it being approved. Page 5

9 4 Drainage & Stormwater Management 4.1 Storm Drainage System The City has a storm drainage system that includes local storm sewers which collect drainage in the subwatershed of Dyment s Creek. The Creek is aligned parallel to the south property line of the development, and it is contained within existing culverts. Along the frontage of the subject development, existing storm drainage is collected in Bradford Street in an existing 375 mm storm sewer. There is no existing storm service connection to the properties. Refer to the municipal record documents in Appendix A. The proposed development will direct its uncontrolled storm drainage to the existing storm sewer in Bradford Street. Refer to Drawing SS-1: Site Servicing Plan. 4.2 Stormwater Management A separate SWM design brief has been completed by CCTA (dated May 2017) to address the stormwater requirements of the proposed development. The proposed development will have its parking area and driveways uncontrolled and the released flow will be discharged to the above noted storm sewer in the Town s drainage system. Refer to Drawing SG-1: Site Grading Plan. Page 6

10 5 Transportation Transportation access to the property is available from Bradford Street. The proposed development will have one vehicle access (inbound) from the street aligned coincident with the existing driveway on 170 Bradford Street. This will be a one-way driveway that will be minimum 3.6 m wide. In addition, one new pedestrian linkage to the existing sidewalk will be constructed as a 1.2 m wide sidewalk parallel to this vehicle access. The proposed development will have one vehicle egress (outbound) to the street aligned with the existing driveway on 168 Bradford Street; this will be a one-way driveway that will be minimum 2.8 m wide. There are two existing pedestrian linkages via concrete walkways and steps from the existing building to the boulevard sidewalk. The existing concrete sidewalk and entrances along the site frontage will be either maintained or removed and reconstructed to suit the requirements of the proposed development. A transit route (Barrie Transit Route 8) is available on Bradford Street. Page 7

11 6 Grading & Landscaping The grading of the proposed development will match to the existing grades along the limits of the development. The existing site grading will be generally maintained, and consequently existing drainage patterns will be maintained. The proposed development will involve the demolition of the existing garage, shed, and addition at the rear of the existing building. The site driveways will be reconstructed, regraded, and widened as required by the City (refer to Drawing SG-1: Site Grading Plan). The proposed development will protect and maintain existing perimeter trees and vegetation on the adjacent properties. A low height concrete retaining curb will be constructed along the parallel parking stalls and the internal sidewalk along the south limit of the site. This retaining curb will be poured and cast-in-place; structural details for it are provided on Drawing SG-1. Landscape design has been completed by the architect to address the landscape considerations of the proposed development. Landscaping will be provided to suit both internal site uses and the external presentation of the proposed development. Given the City standards for the proposed development, typical hardscape grading on the site will be in a range of 1% - 3.5% typical. Accessibility considerations will be provided with ramps, depressed curbs, and gentle approach slopes. Entrance grading will be governed by the existing boulevard sidewalk and the existing steps and walkways into the site. Page 8

12 7 Utilities All utilities (electrical, gas, telecommunications) are available from Bradford Street, and utility services will be provided to the proposed development. Individual utility companies, including Alectra (formerly Powerstream), Enbridge, Bell, and Rogers Cable, have been contacted and have confirmed that their respective services are readily available to accommodate the proposed development. Alectra has required that a new transformer shall be installed on private property at the southeast corner of the site. Page 9

13 8 Conclusions 8.1 Water Supply & Distribution There is an existing 300 mm watermain in Bradford Street with a 19 mm service connection to each of the existing properties. The proposed development will receive its water supply from a new 50 mm water service connection, reduced to be a 38 mm water service and meter on the private property. There is an existing fire hydrant located adjacent to the northeast corner frontage of the site which will provide fire protection for the proposed development. 8.2 Sanitary Sewage Collection There is an existing 250 mm sanitary sewer in Bradford Street with a 100 mm service connection to each of the existing properties. The proposed development will be constructed with a new 150 mm service connection to the property. The proposed development will direct its sanitary sewage to the new service connection. There is satisfactory available capacity in both the new service connection and the existing sanitary sewer to accommodate the proposed development. 8.3 Drainage & Stormwater Management The existing site drains generally from north to south, and overall area drainage is from west to east to Dyment s Creek and ultimately to Lake Simcoe. There is an existing 375 mm storm sewer in Bradford Street with no service connection to the property. The proposed development will direct its uncontrolled storm drainage to the existing storm sewer system via overland flow. A SWM design brief has been completed by CCTA (dated May 2017) to address the stormwater requirements of the proposed development. 8.4 Transportation Transportation access to the property is available from Bradford Street. The proposed development will have one vehicle access to the road and one vehicle egress, both one way driveways. In addition, the site will have one pedestrian linkage to the existing sidewalk. A transit route is available on Bradford Street. 8.5 Grading & Landscaping The grading of the proposed development will match to the existing grades along the limits of the development. The proposed development will protect and maintain perimeter trees and vegetation. A low height concrete retaining curb will be constructed along the parallel parking stalls and internal sidewalk along the south limit of the site. Landscape design has been done by the architect. Page 10

14 8.6 Utilities All utilities (electrical, gas, telecommunications) are available from Bradford Street, and utility services will be provided to the proposed development. Alectra has required that a new transformer shall be installed at the southeast corner of the site. The servicing strategy presented herein demonstrates that the combined properties at 168 and 170 Bradford Street in Barrie can be developed for the proposed mixed use market rental development in a manner that respects all relevant design standards and guidelines and mitigates impacts to the surrounding area. It is concluded that the proposed development of a mixed use building with commercial and residential units can be done in a satisfactory manner. Authored by: Gregory K. Cook, B.A.Sc., P.Eng. Senior Engineer, Project Manager Reviewed by: Bryan F. Stanton, B.A.Sc., P.Eng. Director, Manager - Barrie Office C.C. Tatham & Associates Ltd. The information contained in this document is solely for the use of the Client identified on the cover sheet for the purpose for which it has been prepared and C.C. Tatham & Associates Ltd. undertakes no duty to or accepts any responsibility to any third party who may rely upon this document. This document may not be used for any purpose other than that provided in the contract between the Owner/Client and the Engineer nor may any section or element of this document be removed, reproduced, electronically stored or transmitted in any form without the express written consent of C.C. Tatham & Associates Ltd. Page 11

15 APPENDIX A: MUNICIPAL RECORD DOCUMENTS

16 SITE

17 APPENDIX B: SANITARY SEWAGE DESIGN CALCULATIONS

18 LOCATION OF SECTION AREA LABEL FROM UPSTREAM TO DOWNSTREAM NUMBER OF UNITS POPULATION CUMULATIVE POP. PEAKING FACTOR AREA CUMULATIVE AREA RESIDENTIAL INFILTRATION TOTAL RESIDENTIAL INFILTRATION TOTAL LENGTH DIAMETER GRADE FULL FLOW CAP. FULL FLOW VELOCITY PEAK FLOW VELOCITY SANITARY SEWER DESIGN SHEET Subdivision and 170 Bradford Street Municipality - Barrie FLOW CRITERIA Project No LAND USE AVERAGE FLOW PEAKING FACTOR PEAK FLOW Designed By - DJR RESIDENTIAL 225 L/cap/d HARMON VARIES Date - May 9, 2017 PEOPLE/LOT (MEDIUM DENSITY) 2.34 cap/lot Revised By - INFILTRATION 0.10 L/ha/s L/ha/s Date - Checked - GKC AVERAGE FLOW PEAK FLOW PROPOSED SEWER MH # MH # Ea. CAP. CAP. ha ha l/s l/s l/s l/s l/s l/s m mm % l/s m/s m/s Bradford Street A1 N/A SA % Note: Flow from 168/170 Bradford Street includes flow from 2 commercial units at 28m 3 /day/ha