geotechnical field school 2005 complete

8/10/2019 Geotechnical Field School 2005 Complete

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Geotechnical

Field School-2005

CVG 4974

Saturday Oct 1 2005

7:30 am 5:00 pm

Robinson Field Ottawa


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Instructor: Dr. Garga

A112 ext. 6143

Coordinator: Kenton C. PowerD114-A 6158

TAs: M. Cevat Catana

D114-A ext. 6158Igor Iskra

D108-B ext. 6163

Behnam ShadravanD114-C ext. 6157

Technician: Kulan Ambalavanar

D116 ext. 6150


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Field School Location


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From Colonel By loading docks

Turn Right onto King Edward Ave 0.2 mi

Turn Right onto Robinson Ave 0.2 mi

Turn Left onto Hurdman Rd. 0.1mi

End at 3 Hurdman Rd. (parking lot)

Directions to Field School


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Robinson FieldParking Lot

Intersection of

Robinson Avenueand Hurdman Road


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Robinson Field Entrance


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Robinson Football

Field

RobinsonCommunity Garden


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Robinson Field Community Pathways


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Testing Area 1 and

Washrooms

Testing Areaand Parking Lot


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Think Safety First!

Gloves and hard hats will be provided

Wear safety boots

Wear hard hats for SPT test

WHIMIS guidelines

Dress for the weather

Rain gear

Warm clothes


11/56Overhead Dangers

Think Safety First!


12/56Different Tools and Testing Equipment

ThinkSafety First!


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Geotechnical Investigations

InvestigationMethods


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Soil Sampling (Soil Profile)

Hand Auger, Split-Spoon Sampling, Ground Water Level

Laboratory Tests (Soil Type Determination)

Grain Size Distribution, In-Situ water content

In-situ Soil Density Sand Cone (Direct)

Water Balloon (Direct)

Nuclear Densometer (Indirect)

Strength Relationships Standard Penetration, Vane Shear, Nilcon Vane (Indirect

methods)

Plate Load Test

Bearing Capacity (Direct method)

GeotechnicalInvestigations


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Soil SamplingSoil Identification and Classification

Augering Bore Holes for Soil Sampling


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Bore hole

Start

Soil line at a

1 to 1 scale

showing soilprofile with

depth

Different soil

types

Soil line is

placed 2 m

from bore

hole

Hand Auger Soil Profile with Depth



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Auger to a

measured depth

Carefully remove

soil from augerLay soil on ground

(1:1 Scale)



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Laboratory Tests (Soil Type Determination)

Soil samples are to be taken for the following tests

Sand cone & water balloon tests (each depth)

Hand auger Standard Penetration Test (SPT)

Determine the in-situ water content of each sample

Oven dry the remaining samples

Perform a grain size analysis for each sample

Nameand classifyeach sample using the Unified Soil

Classification System (USCS)

Laboratory TestSoil Identification and Classification


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Sand

Cone TestField Density

Sand Cone Equipment Field Application


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Calibrating Sand Cone Equipment

Sand



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Sand


S C


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Sand


S d C T t


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CalibratingSand Cone Equipment

Sand


W t B ll T t


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Water BalloonTestField Density

Water Balloon Equipment Field Application

W t B ll T t


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CalibratingWater Balloon Equipment

Water BalloonTestField Density


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Setup for Density Tests

Digging Test Pit

Ensuring Bottom is Level

Leveling Soil Surface


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Digging Test Hole

Sand Cone Test in

Progress

Reading Water Level

Performing Density Tests

Standard Penetration (SPT)


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Standard Penetration (SPT)Penetration Number, N: Used in the estimation of

and Design of Foundations (CVG 3106)

Soil Sample Recovered

within SPT Sampler

SPT Sampler Schematic

Assembled SPT Sampler



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Our SPT Testing Apparatus

Standard Penetration (SPT)Penetration Number, N: Used in the estimation of f

and Design of Foundations



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Truck Mounted SPT Apparatus.

One Man Crew

Augering Bore Hole





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Raising 70 lb Weight

(Conventionally 140 lb

Weight is Used)

Proper Technique of Releasing the

Weight to Reduce Pulley Friction




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Field Bore Hole Log

StandardPenetration

Test (SPT)

Penetration Number,N

Used in the estimationof and Design ofFoundations


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Std. Penetration Number N) with Depth

V Sh T t


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Vane Shear TestIn-situ shear strength of soft clays

Field Vane Showing Failure Surface

Vane Shear Test


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Inserting Field Vane to Desired Depth


Vane Shear Test


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Sometimes the soil has a high shear strength


Vane Shear Test


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Bore Hole

SpringBalance

Vane

Drill Rod

15 cm

Proper Method to Apply Torque

to Field Vane

Field Vane Schematic


Nilcon Vane Test


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Nilcon Vane Schematic Nilcon Vane Recorder

Nilcon Vane TestIn-situ shear strength of soft clays

Nilcon Vane Test


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Installing Anchors Installing Anchor Extensions



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Nilcon Vane Test


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Shearing the SoilLowering Field Vane into Soil


Plate Load Test


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Plate Load TestIn-situ Bearing Capacity

Plate Load Test Schematic

Plate Load Test


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Plate Load Anchor Anchor Schematic


Plate Load Test


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Placing Anchors Torque

Wrench

Placing Anchors Torque

Wrench and Moment Arm

Extensions


Plate Load Test


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Placing Anchors

Ensuring Anchors are Level and Properly Orientated


Plate Load Test


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Digging Plate Load Test Pit


Plate Load Test


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Plate Stack at Beginning

of Test

Plate Stack at Failure.

Failure Depth = 25 mm


Plate Load Test


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Graph of Time vs. Settlement.

3 kg/cm2 Load Increment

2

Graph of Applied Load vs.

Total Settlement


Plate Load Test


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Plate Load Test Using Dead Load


Plate Load Test


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Bearing Capacity Failure Envelop

Plate Load Test Schematic Foundation Failure


G Li t


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Group List

GroupsA B C D E F G

Alkhatib Charette Ferreira Lacasse Luk Mustaard Toure

Auckland Charlebois Francoeur Latimer MacDonald Nault Wilke-Alemany

Burtt Dowie Guignion Lehoux Michaluk Rowat Wood

Caron Duthie Hay Lesage Morcos Tahelali Yu

Cheung Deku Belletete Ferrari Lane Lauzon Andoseh

Regimbald Ostrowski Tchernychov Tudor Bahia Bruneau Chan

P j t Li t


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Project List

Testing Schedule

Time A B C D E F G7.30-8.00 Site Instructions, Tools Setup, Preparation

8.00-10.00 SPT SPT SPT SW SW HA HA

10.00-12.00 FV FV FV HA HA SW SW12.00-1.00 Lunch

1.00-3.00 SW SW HA SPT SPT SPT SPT

3.00-5.00 HA HA SW FV FV FV FV

SW - Sand Cone / Water Balloon

SPT- Standard Penetration Test

FV - Field Vane Shear

HA- Hand Auger / Split Spoon Soil Sampling

G Fi ld S h l R t


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Geo-Field School Report

Treat The Report as if you are writing a Technical

Report as a Consulting Engineer on The Carp

Airport

Typed, double spaced, bounded with a cover page

Include name and student number of each member and

indicate the contribution of each student towards the report

Laboratory Tests of Soil Samples

Determine the in-situ water content of each sample

Oven dry the remaining samples

Perform a grain size analysis for each sample

Nameand classifyeach sample using the Unified Soil

Classification System

G Fi ld S h l R t


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Sand Cone and Water Balloon Name and classify the soil at each depth

Determine the soils in-situ density for each depth and foreach test

Compare the soil densities for each depth and give reasonsfor any differences

Compare the soil densities determined by each method andgive reasons for any differences

Standard Penetration Test Name and classify the soil at each depth from the samples

collected

Determine the field standard penetration number profile withdepth

Calculate the corrected standard penetration number

G Fi ld S h l R t


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Hand Auger Name and classify the soil at each depth

If possible, determine the depth of the

Ground Water Table (GWT)

Field Vane

Determine the soils peak and remolded

shear strength Values using both Two

Gauges Method and Torque Wrench

Compare Peak and Remolded Shear

Strength of the two methods

Any Questions


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Any Questions

geotechnical field school 2005 complete

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