2005009756 Kim, Nam-Won

2008010243 Kim, Dong-Eon

2008010447 Park, Jun-Yong

2008010663 Hwang, Gun-Hee

2010002706 Cho, Da-Ae

INTRO

Conceptual Apt. Construction FlowIntro

Earthwork

Structural work

Summary

Site layout planning

Site

Layout

planning

EarthworkStructural

work

Detail

finish

+2month -2month

0month

Duration

G. L

Construction

nD modeling

INTRO

nD modeling

Activity

Intro

Earthwork

Structural work

Summary

Site layout planning

Construction

nD modeling

3

SITE LAYOUT PLANNING

Site layout planning

Site

Layout

planning

G. L

Intro

Earthwork

Structural work

Summary

Site layout planning

Overview

Elec / Water / Equip

Floor plan

WBS Code : GR-C7-

SITE LAYOUT PLANNING

Site overviewIntro

Site layout planning

Overview

Elec / Water / Equip

Floor plan

Earthwork

Structural work

Summary

5

SITE LAYOUT PLANNING

Site overview

LocationDogok-dong,

Gangnam-gu,, Seoul

Period 2010. 11 ~ 2013. 2

Lot Area 16,650㎡ (370mx45m)

Building

Area3,354㎡

Level

B2 ~ 17F (2building)

B2 ~ 18F (1building)

B2 ~ 19F (1building)

B2 ~ 20F (2building)

B2 ~ 21F (2building)

Needed

MaterialsConcrete, Steel

Intro

Site layout planning

Overview

Elec / Water / Equip

Floor plan

Earthwork

Structural work

Summary

6

SITE LAYOUT PLANNING

Electricity

Section and Installation ItemVoltage

/UnitEA

Total

voltage

T / C 200 4 800

L / C 22 8 176

Mechanic tool 30 5 150

Welding machine

30 4 120

Office 75 2 150

HVAC 50 2 100

Total - - 1586

Capacity(45%) - - 713

SelectedTransformer

- - 750

Intro

Site layout planning

Overview

Elec / Water / Equip

Floor plan

Earthwork

Structural work

Summary

7

SITE LAYOUT PLANNING

Water plan

Item Content

Source‘65tons per day’ is needed.

Constructor installed pump(70tons per day).

Pump 170 LPM * 108m * 3.7 ㎾ * 2(1Set)

Intro

Site layout planning

Overview

Elec / Water / Equip

Floor plan

Earthwork

Structural work

Summary

8

Dokok Rexle Apt.

Dokok street

SITE LAYOUT PLANNING

Equipment

Item EA ModelMaximum

Pulling

Maximum

LoadingPlanning

T/C 4DTL

260·1818 Ton

R=50m

4.2 Ton

4 Ruffing T/C → Inside the field

L/C 8KTL 1000/

40- -

Installing toward Dokok street

for soundproofing

TC#1 TC#2 TC#3

TC#4

Intro

Site layout planning

Overview

Elec / Water / Equip

Floor plan

Earthwork

Structural work

Summary

9

Dokok Rexle Apt.

Dokok street

SITE LAYOUT PLANNING

Floor plan

Problem Solution

Narrow and long shape(370m x 45m)

Hard to enter the site for construction vehicle

Not enough area for storage

Using existing road for construction

Closing #1, 3, 5 gate for effective flow

Moving main office to basement

Using public area for office and storage

Intro

Site layout planning

Overview

Elec / Water / Equip

Floor plan

Earthwork

Structural work

Summary

10

EARTHWORK

Conceptual Apt. Construction Flow

Site

Layout

planning

Earthwork

G. L

Intro

Site layout planning

Actual method

Problem

Alternative methods

Earthwork

Structural work

Summary

11

WBS Code : GR-C1-

EARTHWORK

Actual method

Ground anchor

Intro

Site layout planning

Earthwork

Structural work

Summary

Actual method

Problem

Alternative methods

12

EARTHWORK

Ground anchor

Actual project도곡렉슬 - 진달래 법정싸움 "공사장 도로균열 책임져라"

3.3㎡당 집값이 3000만원을 넘는 강남 부자 동네 주민들 싸움이 장기전으로 흐

르고 있다.

주인공은 도곡동 도곡렉슬 아파트와 도곡 진달래 아파트 주민들이다. 싸움의

발단은 도곡 진달래 아파트가 재건축 공사를 하면서부터다.

시공사로 선정된 삼성물산이 2010년 지하 터파기 공사 시 `어스앵커 공법`을

사용했는데 이 때문에 아파트 간 도로에 균열이 생겼다. 이 공법은 직각으로 말

뚝을 박고 이를 지지하기 위해 강철선을 넣는 공법인데 인근 주민들 동의를 받

아야 한다.

도곡렉슬 주민들이 "공사로 도곡렉슬 아파트 단지 도로에 균열이 발생했으니

진달래조합과 삼성물산이 도곡렉슬 용지에 설치한 238개 어스앵커를 철거하라

"는 소송을 냈고 법원이 작년 12월 이를 받아들여, 2달여간 공사가 중단되었다

가 재개된 상황이다.

도곡렉슬 주민들은 곧 어스앵커 피해로 인한 추가 손해배상 청구소송을 낼 계

획이라 소송전은 당분간 계속될 전망이다.

2012.05.28 / 매일경제신문 도재운 기자

Intro

Site layout planning

Earthwork

Structural work

Summary

Actual method

Problem

Alternative methods

13

EARTHWORK

What was the problem?

Road

Soil

σh = γ∙z∙Ka - 2c∙tan(45°-Ф/2)

Intro

Site layout planning

Earthwork

Structural work

Summary

Actual method

Problem

Alternative methods

14

EARTHWORK

Alternative methods

Soil

Ground anchor Strut Raker√

Intro

Site layout planning

Earthwork

Structural work

Summary

Actual method

Problem

Alternative methods

15

STRUCTURAL WORK

Conceptual Apt. Construction Flow

Site

Layout

planning

EarthworkStructural

work

G. L

Intro

Site layout planning

Project financing

Technical solution

Estimation

Earthwork

Structural work

Summary

16

WBS Code : GR-C2-A -303

STRUCTURAL WORK

Profit

Profit

60days

Duration of structural work

Opportunity cost

Opportunity cost > Cost of alternative method

= Total cost x Interest rate x 60/365

= Profit + Penalty + α

Intro

Site layout planning

Project financing

Technical solution

Estimation

Earthwork

Structural work

Summary

17

Technical solution

STRUCTURAL WORK

7days

4days

1. Form

2. Steel

3. Concrete

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

18

Case

STRUCTURAL WORK

Nation Structure system Main issueDuration

(1 floor)

USA(New York) Flat Plate

Wood form

High- strength concrete

Pre-Shoring

2days

USA(Chicago) Flat Plate

ACS Form(Core)

Table Form(Slab)

Early-strength concrete

VH seperated pouring

4days

Canada(Toronto) Wall structure

Gang form(Wall)

Table form(Slab)

Early-strength concrete

VH separated pouring

3days

Japan Ramen structure

Half PC(column, beam)

Deck Form(slab)

High- strength concrete

VH separated pouring

6days

Korea(Complex) Flat Plate

ACS Form(core)

Deck Form/Table form(slab)

High- strength concrete

VH separated pouring

4days

Korea(Apartment) Wall structure

Wood form, Al form(slab)

Euro form, Al form(wall)

Gang form(outer wall)

6~8days

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

19

<Evaluation of RC work, 최길홍, 한양대 산업경영디자인대학원>

Table form

STRUCTURAL WORK

Duration 4days

Cost ₩200,000

Problem

Duration 4days

Cost ₩200,000

Duration 4days

Alternative method → Al form

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

20

Performed steel arrangement

STRUCTURAL WORK

-2days

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

21From KCI(Korea concrete institute)

Early-strength concrete

STRUCTURAL WORK

25-24-21-1days

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

22From Australia cement company

MS project

STRUCTURAL WORK

7 Days

4 Days

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

23

Estimation(ODBC)

STRUCTURAL WORK

Steel Concrete Form

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

24

QTO

STRUCTURAL WORK

Material Building part Unit Quantity Cost

Steel

HD-13Wall ton 9.9t ₩10,791,000

Steel

HD-16Slab ton 4.2t ₩4,557,000

Concrete

25-24-21Wall, Slab ㎥ 237㎥ ₩18,232,840

Outline

workWall ㎡ 1033㎡ ₩413,200

AL Form Slab ㎡ 353㎡ ₩12,530,500

Gang Form Slab ㎡ 1033㎡ ₩36,671,500

T/C - EA 4EA ₩72,900,000

Total - - - ₩156,096,040

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

25

Input process

STRUCTURAL WORK

Cost of form

Cost of concrete

Cost of T/C

Cost of steel

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

26

Cost(4days)

STRUCTURAL WORK

BCWPIntro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

27

S-curve of 4-days

STRUCTURAL WORK

7

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

28

Cost(4days)

STRUCTURAL WORK

1.6billion won – 1.8billon won = -0.2billion won

ACWPIntro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

29

S-curve of 4-days

STRUCTURAL WORK

Reduced duration

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

30

Financial check

STRUCTURAL WORK

Rate of bank 1 Year

Reduced duration

The penalty of reduced duration

(from bank’s aspect)

Penalty, Legal fee

Over cost of new method

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation 1.068billion 0.97billion

31

STRUCTURAL WORK

Detail finish

Site

Layout

planning

EarthworkStructural

work

Detail

finish

G. L

Intro

Site layout planning

Earthwork

Structural work

Summary

Project financing

Technical solution

Estimation

WBS Code : GR-C2-A-O-319

SUMMARY

Intro

Earthwork

Structural work

Summary

Site layout planning

EV Report

Naviswork

• EV Report

0

20000000

40000000

60000000

80000000

1E+09

1.2E+09

1.4E+09

1.6E+09

1.8E+09

2E+09

2010 3Q

2010 4Q

2011 1Q

2011 2Q

2011 3Q

2011 4Q

2012 1Q

2012 2Q

2012 3Q

2012 4Q

2013 1Q

2013 2Q

Accumulated cost(4day)

Accumulated cost(7day)

33

SUMMARY

Intro

Earthwork

Structural work

Summary

Site layout planning

EV Report

Naviswork

Revit

MS project

Naviswork

3D model

QTO

Time

&

Cost

Time Cost

Time Cost

34

Thank you!

35