Preliminary Functional Grading and Servicing Report...of Erb Street and is connected to a 300mm diameter municipal watermain on Westhaven Street. Test results indicate an extrapolated

Preliminary Functional Grading and Servicing Report

635 Erb Street West and 12 Westhill Drive, Waterloo

Prepared for BEL Communities Limited Partnership by IBI Group October 24, 2018

IBI GROUP PRELIMINARY FUNCTIONAL GRADING AND SERVICING REPORT Prepared for BEL Communities Limited Partnership

Table of Contents

i

1 Introduction ......................................................................................................................... 1

2 Existing Municipal Servicing ............................................................................................. 4

2.1 Sanitary .................................................................................................................... 4

2.2 Water Supply and Fire Flow..................................................................................... 4

2.3 Storm Sewer ............................................................................................................ 4

3 Proposed Site Conditions .................................................................................................. 4

3.1 Proposed Site Access .............................................................................................. 4

3.2 Proposed Site Grading ............................................................................................. 5

3.3 Proposed Servicing .................................................................................................. 5

3.3.1 Sanitary Servicing ....................................................................................... 5

3.3.2 Water Supply and Fire Flow ........................................................................ 5 3.3.3 Stormwater Management ............................................................................ 6

4 Erosion & Sediment Control .............................................................................................. 6

5 Utilities ................................................................................................................................. 6

6 Summary.............................................................................................................................. 7

Appendix A – Site Plans and Elevation Drawings ..................................................................... 1

Appendix B – Mechanical Loading Calculations ....................................................................... 2

Appendix C – Hydrant Test Results ............................................................................................ 3


1

1 Introduction IBI Group was retained to prepare a Preliminary Functional Grading, Servicing and Stormwater Management design report for the proposed re-development at 635 Erb Street West and 12 Westhill Drive in the City of Waterloo, Ontario. The purpose of this functional design report is to support a Zoning By-law Amendment application to permit the redevelopment of the noted lands with residential apartment buildings.

Photo #1: Site Aerial Photo (Photo Source: MGM Renderings)

The total development area is approximately 1.8 ha and is located on the south side of Erb Street, bordered by Westhill Drive to the west and Westhaven Street to the east (refer to Photo 1 for an aerial photo of the site, and Photos 2 and 3 for pictures of the existing street frontages).

The existing properties are undeveloped and vacant of any buildings and/or structures. Two thirteen-storey apartment buildings and three stacked townhouse blocks are proposed for the subject site.

Access to the development will consist of two vehicular driveways: one from Westhill Drive and the other from Westhaven Street. Both entrances will lead to a central parking areas which will be located underground and on the surface.

Refer to Appendix A for Site plans and building elevation drawings.

This report will describe the proposed functional grading, servicing and stormwater management controls for the site in order to demonstrate the feasibility of the proposed redevelopment from a site civil engineering perspective.


2

Photo #2: Site location looking south (Photo Source: MGM Renderings)

Photo #3: Site location, looking north (Photo Source: MGM Renderings)


3

Photo #4: From Westhaven Street looking west

Photo #5: From Westhill Drive looking northeast


4

2 Existing Municipal Servicing 2.1 Sanitary There is an existing 200mm diameter sanitary sewer on Westcroft Drive that extends to Westhaven Street. A second sanitary sewer is located on Westhill Drive which flows west toward Ira Needles Boulevard. Refer to Appendix A.

2.2 Water Supply and Fire Flow The existing property currently has a 200mm diameter watermain stub from Westhaven Street that connects to the existing 300mm diameter main line on Westhaven Street. There is an existing 400mm diameter watermain located on Westhill Drive that connects to the watermain on the north side of Erb Street.

On review of the site environs, three fire hydrants were located as follows:

An existing fire hydrant is located at the corner of Erbsville Court and Erb Street.

An existing fire hydrant is located on Westhaven Street approximately 40m from the centre of Erb Street and is connected to a 300mm diameter municipal watermain on Westhaven Street. Test results indicate an extrapolated fire flow of 399.0 lps is available.

An existing hydrant is located on Westhill Drive approximately 7m north of the proposed property on the east side of the street and is connected to a 400mm diameter municipal watermain on Westhill Drive. Test results indicate an extrapolated fire flow of 413.0 lps is available.

2.3 Storm Sewer There are no existing storm sewers present on site.

The closest existing storm manhole to the site is located on Westhaven Street and is approximately 2.5m deep. The storm sewer is 525mm in diameter and flows south towards the street dead end into a temporary 525mm diameter storm sewer.

3 Proposed Site Conditions The subject development is proposed for one 12-storey apartment building, one 13-storey apartment building, and six (6) stacked townhouse buildings. One subsurface parking level and one surface level parking lot are proposed. The site will have large areas of landscape and amenity space (30% of the site) including rooftop amenity areas on both apartment buildings. Refer to Appendix A for Site plans and elevation drawings.

3.1 Proposed Site Access The proposed site will consist of two entrances: one from Westhill Drive on the west side of the site, and the second from Westhaven Street on the east side of the site. Both entrances will lead to the centre of the property where surface and underground parking will be accessible. A maximum 10% slope to the driveway ramps has been maintained for the accesses.

Access to each apartment building will be accessible internally from the underground parking lot in addition to the entrances on the ground surface.


5

Pedestrian access will be provided via sidewalk to proposed Building ‘A’ from Erb Street, Westhill Drive, and the parking lot. Pedestrian access will be provided via sidewalk to proposed Building ‘B’ from Erb Street and the parking lot. Pedestrian access to the townhouses will be provided via sidewalk from the parking lot on the north side of Buildings ‘C’, ‘D’, ‘E’, ‘and ‘F’, and on the west side of Buildings ‘H’ and ‘G’. A maximum sidewalk slope of 5% will be used.

3.2 Proposed Site Grading The proposed site will consist of approximately 30% landscaped areas and amenity spaces, the remaining area will consist of the proposed buildings and parking. The building’s drainage will be contained and discharged via storm sewers. Overland flow routes will be designed to convey large storm events or in emergencies should catchbasins become blocked.

Grading of the site and building access will ensure barrier free walkways to main entrance doors utilizing minimum slopes of 0.5% and maximum of 5%. Vehicular access routes will have a minimum slope of 0.5% and an ideal maximum of 5%, with an absolute maximum on ramps of 10%. Landscape areas will have minimum slopes of 2% and maximum of 33% (3:1).

3.3 Proposed Servicing

3.3.1 Sanitary Servicing Based on estimated sanitary loads for the proposed building, the proposed developments anticipated maximum drainage rate and MOE standards, the peak flow rates are:

Building ‘A’: 0.877 lps; Building ‘B’: 1.241 lps; Townhouses: 0.336 lps.

Building ‘A’ will be serviced from Westhill Drive via a 200mm sanitary sewer (min slope = 0.5%), while Building ‘B’ and the townhouses will be serviced from Westhaven Street via a 200mm sanitary sewer (min slope = 0.5%), and 100mm diameter laterals (min slope = 2.0%).

Sewage on Westhaven Street flows eastward from the subject site towards Westcroft Drive in a 200mm diameter sewer. Sewage on Westhill Drive flows westward from the subject site towards Ira Needles Boulevard in a 200mm diameter sewer. Given the sites’ relatively low peak flow compared to the municipal sewer capacity, we anticipate that capacity will not be an issue, however, the City will need to confirm this assumption as they are familiar with their sanitary collection system.

3.3.2 Water Supply and Fire Flow The proposed site will be serviced via the municipal water supply system on both Westhaven Street and Westhill Drive as follows:

Building ‘A’: A 150mm diameter service pipe that connects to the existing 400mm diameter municipal watermain on Westhill Drive will be provided.

Building ‘B’: A 150mm diameter service pipe will be provided. This pipe will connect to the existing 200mm diameter stub off Westhaven Street.

Townhouses: The existing 200mm diameter stub off Westhaven Street will be extended into the private road fronting the townhouse buildings. Individual 100mm service pipe will be provided to each townhouse building from this new watermain.

Based on the results of the hydrant flow testing conducted on existing municipal hydrants surrounding the development site, we believe the existing municipal water system has adequate capacity to provide the domestic and fire protection requirements for the proposed development.


6

3.3.3 Stormwater Management The stormwater management criterion for this development is based on the requirements of the City of Waterloo and Region of Waterloo. The requirements include stormwater quantity control, stormwater quality control, and infiltration to ground.

On-site runoff will be conveyed via surface grading and swales, and collected in catchbasins located throughout the site. These catchbasins will be connected to storm sewers which will be routed to the existing sewer on Westhaven Street via a 525mm diameter storm sewer. The Westhaven Street storm sewer then routes runoff to an existing stormwater management pond to the southeast of the property. This existing SWM pond is part of the Gies-Westale Subdivision and was sized to receive flows from 1.26 ha of the proposed development, based on a runoff coefficient C of 0.70.

On-site infiltration of rooftop runoff will be explored at the detailed design stage and if site soils and groundwater conditions permit, infiltration will be incorporated into the design. No existing external areas drain onto the site. Refer to Site Grading and Servicing Plan in Appendix A.

Refer to the Preliminary Stormwater Management Design Brief revised October 17, 2018 for further details on stormwater management and control.

4 Erosion & Sediment Control During construction, erosion and sediment control measures will be required. Details of this control will be provided in detail during the detailed engineering design, and will include (as a minimum) the following:

Silt fence erected around site perimeter before any work begins on the site to protect adjacent areas from migration of sediment in overland flow.

A “mud mat” installed at the construction entrance(s) to the site to minimize the amount of sediment transported off site via construction vehicles;

All disturbed areas should be stabilized as quickly as possible to minimize the opportunity for erosion.

5 Utilities The various utilities (i.e., Hydro, Gas, and Communications) all have existing facilities on the surrounding municipal streets. Servicing of the development by the various utilities will be provided by the extension of these facilities. It is anticipated that each of these utilities will, as required, identify their specific requirements through the standard application circulation, review and design process.


7

6 Summary This Report demonstrates that the proposed development at 635 Erb Street West and 12 Westhill Drive in the City of Waterloo, Ontario can be designed and constructed from a grading and municipal servicing perspective in accordance with typical municipal standards.

We trust the foregoing is satisfactory to support the rezoning application. Should there be any questions or if further information is required, please do not hesitate to contact the undersigned.

All of which is respectfully submitted.

Yours truly

IBI GROUP

John Perks, MBA, P.Eng. Julianna Arcese, P. Eng. Associate Director Project Engineer


Appendix A – Site Plans and Elevation Drawings

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Front Yard (m)Rear Yard (m)Ext. Side Yard (m)Int. Side Yard (m)

5.07.53.03.0

GROSS LOT AREA (m²)

BUILDING AREA (m²)

BUILDING COVERAGE(%)

BUILDING HEIGHT (m)

DENSITY (Unit/ha) NUMBER OF UNITS

NUMBER OF STOREYS GARBAGE ENCLOSURE

LANDSCAPE AREA (m²)

PARKING 1.25 SPACE / UNIT

BIKE RACKS 2/UNITTOTAL BEDROOMSMIN. FRONTAGE (m)

MIN. FLANKAGE YARD (m)

B.F. PARKING SPACES

LANDSCAPE AREA (%)

NET LOT AREA (m²)

AREA OF ROW & DLT (m²)

ZONING

PROVISION REQUIRED PROVIDED

DEN

SITY

Combination SY (m) 10.0Low rise residential (m)

MR-12

5.0

5.05.05.0

17998.865

4550

25.3635 ERB STREET WATERLOO ON

N/A5.0 5.0

200

36 4012 12

359 335n/a 559(TBC)

419 413

11 11

680 TBC

INDOOR & OUTDOOR

540030 TBC

TBC

17998.865

N/A187

10.0

5.07.5 & 1/2H

is a member of the IBI Group of companies

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ibigroup.com

Any reproduction or distribution for any purpose other than authorized by IBI Group is forbidden. Written dimensions shall have precedence over scaled

dimensions. Contractors shall verify and be responsible for all dimensions and conditions on the job and IBI Group shall be informed of any variations from the

dimensions and conditions shown on the drawing. Shop drawings shall be submitted to IBI Group for general conformance before proceeding with

fabrication.

IBI Group Architects (Canada) Inc.

APR.25, 2018

As indicated

SITE PLAN

102225

LY

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BEL COMMUNITIESPARTNERSHIP LIMITED

JD

635 ERB STREET W., WATERLOO ON

BEL COMMUNITIESPARTNERSHIP LTD.

101-410 ALBERT STREETWATERLOO ONtel (519) 585-2255 fax (519) 585-2269

IBI GROUP

SCALE: 1 : 300A0.1SITE PLAN1

SUBJECT SITE

NO. ISSUANCE BY DATE2 Issued for Preconsultation LY APR 25, 20181 Issued for ZBA&OPA LY OCT 20, 2017

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fabrication.


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IBI GROUP

SCALE: 1 : 300A0.2GROUND FLOOR PLAN1


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APR.25, 2018

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BASEMENT PLAN

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A0.3


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SCALE: 1 : 300A0.3BASEMENT PLAN1


DATE:

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101 - 410 Albert StreetWaterloo ON N2L 3V3 Canadatel 519 585 2255 fax 519 585 2269ibigroup.com

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KEY PLAN

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THIS DRAWING, AS AN INSTRUMENT OF SERVICE, IS THE PROPERTY OF THE ARCHITECT/ENGINEER AND MAY NOT BE REPRODUCED WITHOUT THEIR PERMISSION AND UNLESS THE REPRODUCTION CARRIES THEIR NAME. ALL DESIGN AND OTHER INFORMATION SHOWN ON THIS DRAWING ARE FOR THE USE ON THE SPECIFIED PROJECT ONLY AND SHALL NOT BE USED OTHERWISE WITHOUT WRITTEN PERMISSION OF THE ARCHITECT/ENGINEER.

WRITTEN DIMENSIONS SHALL HAVE PRECEDENCE OVER SCALED DIMENSIONS. CONTRACTORS SHALL VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND OF ANY VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THE DRAWING AND REPORT ANY DISCREPANCIES TO THE ARCHITECT/ENGINEER PRIOR TO PROCEEDING WITH THE WORK.

SHOP DRAWINGS SHALL BE SUBMITTED TO THE ARCHITECT/ENGINEER FOR APPROVAL BEFORE PROCEEDING WITH FABRICATION.

THESE DRAWINGS SHALL NOT BE SCALED.

ALL DRAWINGS SHALL BE READ IN CONJUNCTION WITH ALL OTHER RELATED DOCUMENTS AND SPECIFICATIONS.

1 : 300

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Y.L


FLOOR PLANS

1 OCT 20, 2017 LY ISSUED FOR ZBA & OPA - 1st

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101 - 410 Albert StreetWaterloo ON N2L 3V3 Canadatel 519 585 2255 fax 519 585 2269ibigroup.com

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KEY PLAN

SHEET TITLE

# DATE BY REVISIONS

THIS DRAWING, AS AN INSTRUMENT OF SERVICE, IS THE PROPERTY OF THE ARCHITECT/ENGINEER AND MAY NOT BE REPRODUCED WITHOUT THEIR PERMISSION AND UNLESS THE REPRODUCTION CARRIES THEIR NAME. ALL DESIGN AND OTHER INFORMATION SHOWN ON THIS DRAWING ARE FOR THE USE ON THE SPECIFIED PROJECT ONLY AND SHALL NOT BE USED OTHERWISE WITHOUT WRITTEN PERMISSION OF THE ARCHITECT/ENGINEER.

WRITTEN DIMENSIONS SHALL HAVE PRECEDENCE OVER SCALED DIMENSIONS. CONTRACTORS SHALL VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AND OF ANY VARIATIONS FROM THE DIMENSIONS AND CONDITIONS SHOWN ON THE DRAWING AND REPORT ANY DISCREPANCIES TO THE ARCHITECT/ENGINEER PRIOR TO PROCEEDING WITH THE WORK.

SHOP DRAWINGS SHALL BE SUBMITTED TO THE ARCHITECT/ENGINEER FOR APPROVAL BEFORE PROCEEDING WITH FABRICATION.

THESE DRAWINGS SHALL NOT BE SCALED.

ALL DRAWINGS SHALL BE READ IN CONJUNCTION WITH ALL OTHER RELATED DOCUMENTS AND SPECIFICATIONS.

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M.M

12/07/16

A0.42102225


Y.L


FLOOR PLANS- BUILDING A

1 OCT 20, 2017 LY ISSUED FOR ZBA & OPA - 1st

SCALE: 1 : 300A0.42TOP FLOOR PLANS1 BUILDING A - 11-13th FLOOR, BUILDING B - 10-12th FLOOR


DATE:

ISSUE

SHEET TITLE

PROJECT

SCALE:

CHKD' BY:

DRAWN BY:

PROJECT NO:

SHEET NUMBER

PRIME CONSULTANT

SUB CONSULTANT

SEAL

CLIENT

COPYRIGHT:

ISSUES

ibigroup.com




fabrication.


APR.25, 2018

BUILDING MASSINGSTUDY

102225

Author

04/24/18

A0.55


Checker




IBI GROUP

SCALE:A0.55VIEW FROM SOUTHEAST1

SCALE:A0.55VIEW FROM NORTHEAST2

SCALE:A0.55VIEW FROM SOUTHWEST3

SCALE:A0.55VIEW FROM NORTHWEST4

NO. ISSUANCE BY DATE1 Issued for Preconsultation LY APR 25, 2018


Appendix B – Mechanical Loading Calculations

Project:

Location:

Date:

123

10" @ 1% slope

10" @ 1% slope

4"

Fire Flow: 392 USGPM

1861.5

1558

Sept 14'17

124Kitchen Sink

11226187Washroom Group

Total Fixture Units

(FU)

Fixture Units Each

(FU)

Number of Fixture

TypeFixture Type

2502125

Sanitary Drain:

TOTAL (FU):

SITE SERVICE CALCULATIONS

Number of Suites:

Sanitary Load Calculation

Building Information

Washing Machines

635 Erb St - Building A

Waterloo

Storm Drain:

Storm Load

Water Load Calculation

Fixture TypeNumber of Fixture

Type

Total Fixture Units

(FU)

Washroom Group 187 6 1122

*For roof drains of Building A only, this does

not include any site or terrace drains.

1620

290

Domestic Water Service Line:

Fire Flow Calculation

TOTAL (GPM):

TOTAL (FU):

Kitchen Sink 124 2 248

Washing Machines 125 2 250

Fixture Units Each

(FU)

Site Services Calculations 635 Erb St - Building A 1 of 1

Project:

Location:

Date:

174

10" @ 1% slope

10" @ 1% Slope

6"


2280

355



TOTAL (GPM):

TOTAL (FU):



Fixture Units Each

(FU)

Total Fixture Units

(FU)


Storm Drain:

Storm Load



Type

2176

Sanitary Drain:

TOTAL (FU):


Number of Suites:



Washing Machines

635 Erb St - Building B

Waterloo

*For roof drains of Building B only, this does

not include any site or terrace drains.

262.51.5

2192.5

Sept 14'17

175Kitchen Sink

15786263Washroom Group

Total Fixture Units

(FU)

Fixture Units Each

(FU)

Number of Fixture

TypeFixture Type

352

Site Services Calculations 635 Erb St - Building B 1 of 1

Project:

Location:

Date:

38

8" @ 1% slope

8" @ 1.5% slope

4"


*For roof drains of Townhouses only, this

does not include any site or terrace drains.

384

692

172



TOTAL (GPM):

TOTAL (FU):



Fixture Units Each

(FU)

Total Fixture Units

(FU)

Powder Room 26 6 156


Storm Drain:

Storm Load



Type

38

Sanitary Drain:

TOTAL (FU):


Number of Suites:



Washing Machines

635 Erb St - Town houses

Waterloo

Washroom Group 64 6

571.5

660

Sept 14'17

38Kitchen Sink

1435.526Powder Room

Total Fixture Units

(FU)

Fixture Units Each

(FU)

Number of Fixture

TypeFixture Type

762

Site Services Calculations 635 Erb St - Town houses 1 of 1


Appendix C – Hydrant Test Results

Hydrant Flow Test - WO# 21294Westhaven Street & Westcroft DriveWaterloo

Static Hydrant at **End of Westhaven St.**Flowing Hydrant at**Corner of Westhaven St. & Westcroft Drive**Static Pressure (Psi) Pitot Reading 1 52 # of Outlets Flowed 1 1

70 Outlet Size 1 2.5 # of Outlets Flowed 2 2Residual Pressure 1 (Psi) Pitot Reading 2 38+34 # of Outlets Flowed 3 0

68 Outlet Size 2 2.5 Graph Data:Residual Pressure 2 (Psi) Pitot Reading 3 Pressure Values (y-axis) Flow Values (x-axis)

64 Outlet Size 3 70 0Residual Pressure 3 (Psi) Flow 1 Calculated 68 1210

1210.38 64 2013Flow 2 Calculated

2012.75 Time of Test :Co efficient value Flow 3 Calculated 27-Oct-17

0.9 0.00 Performed by: L.M

10:00am

636465666768697071

0 500 1000 1500 2000 2500

Pres

sure

(Psi

)

Flow (USGPM)

Water Graph

70 psi

64psi @ 2013 USGPM

68psi @ 1210USGPM

Hydrant Flow Test - WO# 21294Westhill DriveWaterloo

Static Hydrant at **7 Westhill Drive**Flowing Hydrant at**51 Westhill Drive**Static Pressure (Psi) Pitot Reading 1 47 # of Outlets Flowed 1 1

62 Outlet Size 1 2.5 # of Outlets Flowed 2 2Residual Pressure 1 (Psi) Pitot Reading 2 30+30 # of Outlets Flowed 3 0

60 Outlet Size 2 2.5 Graph Data:Residual Pressure 2 (Psi) Pitot Reading 3 Pressure Values (y-axis) Flow Values (x-axis)

58 Outlet Size 3 62 0Residual Pressure 3 (Psi) Flow 1 Calculated 60 1151

1150.72 58 1838Flow 2 Calculated

1838.09 Time of Test :Co efficient value Flow 3 Calculated 27-Oct-17

0.9 0.00 Performed by: L.M

10:30am

57.558

58.559

59.560

60.561

61.562

62.5

0 200 400 600 800 1000 1200 1400 1600 1800 2000

Pres

sure

(Psi

)

Flow (USGPM)

Water Graph

62 psi

58psi @ 1838 USGPM

60psi @ 1151USGPM

Documents

Preliminary Functional Grading and Servicing Report...of Erb Street and is connected to a 300mm diameter municipal watermain on Westhaven Street. Test results indicate an extrapolated