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Teaching Teaching AssistantAssistant: B. Berk : B. Berk AyraçmaAyraçma

RoomRoom No: 258 No: 258

�A Housing Estate in Arıköy, Istanbul is planned to be

constructed.

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TERM PROJECT

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TERM PROJECT

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The contractor is responsible for;

The geotechnical design and time&cost

analysis of the support and foundation system

including

� Retaining wall design where needed

� The design of the deep excavation support system

� The Foundation system design

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� The contract value is 2,000,000 TL

� The project duration is 30 days.

� The contractor should pay a penalty of 10,000 TL/day in

the case of a delay.

� The contractor will receive an early finish bonus of 5,000

TL /day if the project is completed before the promised

due date.

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TERM PROJECT

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TERM PROJECT

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Number of Storeys and recommended structural loads for the

buildings

Building Code

Dimensions of eachbuilding

Properties Load per storey (kPa)

B1

17.0m x 14.0mInteraction between

the adjacent buildings will be ignored!

2B+G+14F 13

B2 2B+G+13F 13

B3 1B+G+12F 14

B4 1B+G+12F 14

B5 1B+G+13F 13

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Production Rates and Unit Prices for the construction activities

Activity

IDDescription Unit

Production Rate

(per day)

Unit Price

(TL)

1 Bored Pile Φ65 cm m 100 190

2 Bored Pile Φ80 cm m 100 240

3 Bored Pile Φ100 cm m 100 310

4 Raft Foundation (H=2m) m2 150 500

5 Jet Grout III Φ65 cm m 150 70

6 Gravity type retaining wall m³ 30 150

7 RC retaining wall m³ 40 200

8 Sheet-Pile wall-cantilever type m2 80 210

9 Sheet-Pile wall-anchored type m2 60 250

10 Land acquisition m² 150 -

11 Excavation m³ 16 100

12 Earth fill m³ 14 100

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The most important step in geotechnical design is to conduct

an adequate subsurface investigation. The number, depth,

spacing and properties of borings, sampling and testing

involved in an exploration program are all dependent upon

site conditions and the properties of the structures. In fact,

there exists no rigid rules for the extent of a soil exploration

program.

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In the beginning

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In the beginning

• Request the borehole data for the

site from your instructor

• Ask the instructors for the values of the

soil parameters that you need to know

during your design.

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How to decide for the extent of a soil exploration

program?

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• Field testing : The number and location of borings

• Laboratory testing

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Borehole Location and number

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1. Introduction and the description of the problem

2. The number and location of borings

3. Evaluation of Borehole data:

Soil Profile, GWT location,

Evaluation and correction of SPT-N

4. Soil Parameters and Laboratory Data

5. Deciding on the values of design parameters

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1st Report

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1st REPORT

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Report Format Content

1. Introduction • Introduce your project. Write the description and content of the

problem.

2. Soil profile • Determination of the Soil profile: By taking 2 cross-sections draw the

layering of soil strata, ground water elevation, etc.

• Analyze in-situ test data, correct SPT-N values.

• Evaluate the laboratory test data

• Determine the index and engineering properties of each soil layer by

considering both SPT-N values and laboratory test results-Design

parameters.

• Report all of your findings, calculations, drawings and decisions (i.e. I

choose the design parameter values as.... because…).

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1st Report- Soil Profile

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1st Report- Soil Profile

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2nd REPORT

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Report Format Content

3. Geotechnical

Engineering

Design (a)

By also conducting time&cost analyses;

• Design an adequate retaining wall for the most critical section by evaluating alternative options.

• Design a support system for the foundation excavation by considering alternative support types.

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Retaining Wall Design

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�

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Retaining Wall Design

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Sheet Pile Wall Design

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THE FINAL REPORT

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Design of the Foundation System

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Start with Shallow Type Foundation.

In case you found out that shallow type is insufficient then proceed with the

Deep Foundation System

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1. Retaining Wall Design

2. Sheet Pile Wall Design for the support of the excavation

3. Design of the Foundation System

4. Time Planning and Cost Accounting

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Final Report

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FOUNDATION DESIGN

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Calculation of total and differential settlements

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For the design of a raft

foundation

1. Check for safe bearing

capacity requirement

2. Determine whether the

total and differential

settlements are within

tolerable limits

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Final Report

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Report Format Content

4. Geotechnical

Engineering Design (b)

• Decide for the foundation system:

1) Raft foundation: Calculate the bearing capacity and both total anddifferential settlements

2) In case shallow foundation is not adequate, design a deep foundationsystem by considering both pile and jet-grout construction alternatives.

5. Time Planning and

Cost

Accounting

• Determine the time required for each design.

• Determine the cost for each design.

• Discuss your solutions for alternative choices in terms of time and cost

criteria.

6. Conclusion • Summarize all evaluations and analyses you have done. Indicate the final

results of your analyses. Explain your choices for each process of the

project by discussing your decision in terms of time and cost criteria (i.e.

According to the two criteria given, the cost is higher for …or according to

1st criteria, solution 1 is better or has less cost without paying any penalty.

Therefore I choose…)

7. References • Indicate also all the guidelines, codes and standards used

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� Analyze each phase of the project for two different

engineering solutions.

� Discuss the alternatives according to the two criteria given;

cost and duration of construction.

� Choose the best alternative, explain the reasons for your

choice and write a short method of statement in the

discussion part of your report.

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TERM PROJECT

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�

Criteria

Assignment

CompletenessAccuracy

Demonstrated

Knowledge Requirements Neatness

Gra

din

g

1 Unsatisfactory

Less than 1/2 of all items

attempted.

Less than 1/2 of all items are correct.

Response shows a complete lack of

understanding for the problem.

Has done something

different or did not do

anything

Writing is not legible.

2 Developing

At least 1/2 of the items

attempted.

Between 1/2 and9/10 of items are

correct.

Response showssome

understanding of the problem.

Does not meet the

requirements of the problem.

Writing is not legible in

places.

3 Satisfactory9/10 of items

attempted.9/10 of items are

correct.

Shows substantialunderstanding of

the problem, ideas, and processes.

Meets the requirements of

the problem.

Marginally legible

handwriting, typing, or printing.

4 ExemplaryAll items

attemptedAll items are

correct.

Shows complete understanding of

the questions, mathematical ideas,

and processes.

Goes beyond the

requirements of the problem.

Legible handwriting,

typing, or printing.

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Evaluation of the Study

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This is a Team Work!

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PROJECT GROUPS

Group 1(B1)

Ömer Yasir Küçük

Burcu Bayraktar

Sait Ceylan

Mustafa Köseoğlu

Mert Zileli

Group 2(B2)

Erkan Çam

Kübra Tuğba Keskin

Anıl Yüksel

Emre Ozan Kaymak

Zeynep Esra Gürbüz

Group 3(B3)

Gülcan Çağla Emir

Sernaz Engin

Nurullah Bingölbali

Kaan Dişisağlam

Necmettin Tamgüney

Group 4(B4)

Ahmet Çötoğlu

Anıl Öztürk

Serhat Çağlar

Yılmaz Yılmaz

Yusuf Teski

Group 5(B5)

Hilmi Arısoy

Oğuzhan Akpınar

Mert Aksu

Melih Ayar

Serkan Ülger

Group 6(B1)

Burak Yelken

Güneş Çilingir

Furkan Tozluyurt

Yusuf Aksöz

Oğuz Durur

Group 7(B2)

Bekir Bakır

Mehmet Kömürcü

Mehmet Kaya

Ozan Çavuş

Seyfettin Kenan

Group 8(B3)

Serkan Fidan

Mete Alp Kızılçay

Onur Güney Güven

Serdar Nurduhan

Mehmet Fırat