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  • BRAMALEA SECONDARY SCHOOL ADULT EDUCATION - CLASSROOM &

    OFFICE RENOVATIONS

    510 Balmoral Drive, Brampton, Ontario L6T 1W4

    TENDER NO. L18-4165

    SUPPLEMENTARY INFORMATIONProject Manual Volume 3

    MOFFET & DUNCAN ARCHITECTS INC. PRIME CONSULTANT

    Ravens Engineering Inc.STRUCTURAL ENGINEERS

    Ellard-Willson Engineering Ltd.MECHANICAL & ELECTRICAL ENGINEERS

    Fleisher Ridout Partnership Inc.LANDSCAPE ARCHITECT

    Candevcon LimitedSITE SERVICES AND GRADING ENGINEER

  • FORWARD ENGINEERING & ASSOCIATES INC.

    Geotechnical, Environmental, Inspection & Material Testing Services

    244 Brockport Drive, Unit 15, Toronto, Ontario, M9W 6X9, Tel: (416)798-3500, Fax:(416)798-8481

    REPORT

    GEOTECHNICAL INVESTIGATION

    PROPOSED NEW PARKING LOT/PAVEMENT ADDITION

    BRAMALEA SECONDARY SCHOOL

    510 BALMORAL DRIVE

    BRAMPTON ONTARIO, ONTARIO

    PREPARED FOR:

    PEEL DISTRICT SCHOOL BOARD

    c/o

    MOFFET AND DUNCAN ARCHITECTS

    5052 Dundas Street West

    Etobicoke, Ontario

    M9A 1B9

    November 20, 2017

    Ref. No. G6167

    Distribution: 4 Copies MOFFET AND DUNCAN ARCHITECTS

    1 Copy FORWARD ENGINEERING & ASSOCIATES INC.

  • TABLE OF CONTENTS

    PAGE NUMBER

    INTRODUCTION 1

    PURPOSE AND SCOPE 1

    PROPOSED DEVELOPMENT 2

    FIELD AND LABORATORY TESTING

    Field Works 2

    Laboratory Testing 3

    SITE CONDITIONS

    Surface Conditions 3

    Sub-Surface Conditions 4

    GEOTECHNICAL DISCUSSION AND RECOMMENDATIONS PROPOSED NEW PARKING EXPANSION

    Asphaltic Pavement Design 6

    Concrete Paving and Side Walks 7

    Excavation and Backfill 8

    Underground Utilities 8

    General Comments 9

    LIST OF ENCLOSURES:

    BOREHOLE LOCATION PLAN - DRAWING NO. 1

    LOG OF BOREHOLE SHEETS (BH-1 to BH-6) - APPENDIX A

  • 1 Forward Ref. No. G6167 Proposed Pavement Addition, Bramalea S. S., 510 Balmoral Dr., Brampton ON.

    INTRODUCTION

    This report presents the results of the geotechnical investigation carried out

    by Forward Engineering & Associates Inc. for the proposed parking lot

    pavement at Bramalea Secondary School located at 510 Balmoral Drive, in

    the City of Brampton, Ontario.

    The location of the proposed parking lot in relation to the existing school

    building and surrounding roads is shown on Drawing No. 1. The locations of

    the boreholes carried out during this investigation are also presented on

    Drawing No. 1.

    This investigation was authorized by Mr. Kevin Lilliman, of Moffet and

    Duncan Architects on behalf of Peel District School Board.

    PURPOSE AND SCOPE

    The objectives (purpose) of this investigation were to determine the

    following:

    The extent, depth and properties of the predominant fill/soil strata, as they affect the design and construction of the proposed pavement.

    The short term groundwater levels, if encountered

    The required design criteria for utilities and pavement design at the proposed new parking lot.

    To achieve the above noted objectives, the field program consisted of drilling

    six [6] boreholes sampled to a maximum depth of 3.15 m below ground

    surface level.

    On completion of the field and laboratory work, an engineering analysis was

    carried out and this summary geotechnical report was prepared.

  • 2 Forward Ref. No. G6167 Proposed Pavement Addition, Bramalea S. S., 510 Balmoral Dr., Brampton ON.

    PROPOSED DEVELOPMENT

    We understand that the proposed work will consist of a new asphalt and

    concrete pavement in the north east corner of the existing school building

    where landscaping currently exists. Concrete walkways and landscaping are

    proposed at the remaining areas of the site.

    FIELD AND LABORATORY TESTING

    Field Works:

    The field work for the borehole investigation consisted of six [6] boreholes

    (BH-1 to BH-6) drilled on November 03, 2017, under the full supervision of

    a member of our staff.

    The drilled boreholes were located at the approximate locations shown on

    Drawing No. 1, and extended to a maximum depth of about 3.15 m below

    Existing Ground Surface Level (EGSL). Some of the boreholes were

    relocated in the field from originally intended/planned location due to

    existing underground utility services and existing landscape features.

    Soils were sampled in the boreholes following the Standard Penetration Test

    (SPT) method. The samples were logged in the field and appropriately stored

    in plastic bags and re-examined in more detail in the laboratory.

    The samples will be stored for a period of three months and then discarded,

    unless we are instructed differently.

    Groundwater observations were made in the open boreholes, during and upon

    completion of the drilling operation. The results are recorded on the Log of

    Borehole sheets.

    Elevations referred to in this report are metric and geodetic. The ground

    level elevations at the borehole locations were interpolated from the Plan of

    Topography dated November 11, 2010, conducted by Tarasick McMillan

    Kubicku Ltd., and provided to us by the client.

  • 3 Forward Ref. No. G6167 Proposed Pavement Addition, Bramalea S. S., 510 Balmoral Dr., Brampton ON.

    Laboratory Testing:

    Laboratory testing consisted of determination of the in-situ moisture content

    of the retrieved and representative soil samples.

    SITE CONDITIONS

    Surface Conditions

    Bramalea Secondary School is located at 510 Balmoral Drive, in the city of

    Brampton, Ontario. Currently the school is operational. For the purpose of

    this investigation it will be assumed that the north bearing is parallel with

    Balmoral Drive.

    The subject site (the area of the proposed parking lot), where the borehole

    investigation took place, is located at the north east corner of the existing

    school building.

    The subject site conditions, as observed during our site visit on November

    03, 2017, is presented in the following Table;

    East Boundaries: Bramalea Road, followed by institutional

    building (Church of God offices).

    North Boundaries: Soccer Field/running track followed by

    residential dwellings.

    West Boundaries: Balmoral Drive, followed by multi-storey

    residential building.

    South Boundaries: School building, followed by residential

    dwellings.

    Surface Coverage: Surface of the subject site is predominantly grass

    landscaping with mature trees and with areas of

    asphalt pavement and concrete walkways.

    Ground Level: Generally flat, with a minor overall slope grading

    down in the north and east directions.

    Ditches: N/A

    Berms: N/A

    Stockpiles: N/A

    Existing Structures: 1 and 2 storey brick structure with no basement.

  • 4 Forward Ref. No. G6167 Proposed Pavement Addition, Bramalea S. S., 510 Balmoral Dr., Brampton ON.

    Sub-Surface Conditions

    The sub-surface conditions encountered at the borehole locations are

    shown on the Logs of Boreholes, presented in Appendix A, and can be

    summarized as follows:

    Topsoil/Organic Soil A layer of topsoil (organic soil), with a

    thickness ranging between 100 and 200 mm, was encountered at the

    surface of all the boreholes.

    Reworked/Disturbed Soil Reworked/disturbed soil was encountered below the toposoil/organic soil layer in all the

    boreholes, and extended to a depth ranging from about 0.30 to 1.60

    m below ground surface level (EGSL). This brown layer consisted

    of sandy and clayey silt with traces of rootlets, stains to traces of

    organics and occasional traces of gravel. This disturbed soil layer

    was found in compact state of packing and in moist condition.

    Silty Clay Till/Clayey Silt Till Very stiff to hard silty clay till/clayey silt till was encountered below the reworked/disturbed soil

    layer and extended to a depth of about 2.3 m below EGSL in

    boreholes BH-2 and BH-3, or to the maximum depth of this

    investigation. This olive brown and moist till contained occasional

    shale fragments.

    Highly Weathered Shale Hard, grey and moist highly weathered shale was encountered below the silty clay till/clayey silt

    till in boreholes BH-2 and BH-3, and extended to the maximum

    depth of this investigation. For estimate purpose, in areas where the

    boreholes did not extend into the shale, shallow bedrock should be

    expected to start from the bottom of the boreholes.

    Groundwater All the boreholes remained open and dry upon the completion of the drilling operation, except for borehole BH-1,

    which remained open and the water level was measured at a depth of

    3.0 m (i.e. about 70 mm of water at the bottom of borehole).

    The water level at borehole BH-1 was most likely the result of soaked

    topsoil layer, with surface water slowly seeping into the borehole.

  • 5 Forward Ref. No. G6167 Proposed Pavement Addition, Bramalea S. S., 510 Balmoral Dr., Brampton ON.

    It should be noted, however, that the groundwater levels are subject

    to seasonal fluctuations. Consequently, definitive information on the

    long term groundwater levels could not be obtained at the present

    time.

  • 6 Forward Ref. No. G6167 P

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