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시공 파이널 Ver. 1.5

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시공 파이널 Ver. 1.5

  1. 1. 2005009756 Kim, Nam-Won 2008010243 Kim, Dong-Eon 2008010447 Park, Jun-Yong 2008010663 Hwang, Gun-Hee 2010002706 Cho, Da-Ae
  2. 2. INTRO Intro Conceptual Apt. Construction Flow Construction Site layout planning nD modeling Earthwork Structural work G. L Summary Site Layout planning Earthwork Structural work +2month -2month Duration 0month Detail finish
  3. 3. INTRO Intro Construction nD modeling Activity nD modeling Site layout planning Earthwork Structural work Summary 3
  4. 4. SITE LAYOUT PLANNING Intro Site layout planning Site layout planning Overview Earthwork Elec / Water / Equip Structural work G. L Floor plan Summary Site Layout planning WBS Code : GR-C7-
  5. 5. SITE LAYOUT PLANNING Intro Site overview Site layout planning Overview Elec / Water / Equip Floor plan Earthwork Structural work Summary 5
  6. 6. SITE LAYOUT PLANNING Intro Site layout planning Site overview Location Dogok-dong, Gangnam-gu,, Seoul Overview Elec / Water / Equip Floor plan Period 2010. 11 ~ 2013. 2 Lot Area 16,650㎡ (370mx45m) Building Earthwork Area B2 ~ 17F (2building) Structural work Summary 3,354㎡ B2 ~ 18F (1building) Level B2 ~ 19F (1building) B2 ~ 20F (2building) B2 ~ 21F (2building) Needed Materials Concrete, Steel 6
  7. 7. SITE LAYOUT PLANNING Intro Electricity Item Voltage /Unit EA Total voltage T/C 200 4 800 L/C 22 8 176 Mechanic tool 30 5 150 Welding machine 30 4 120 Structural work Office 75 2 150 Summary HVAC 50 2 100 Total - - 1586 Capacity(45%) - - 713 Selected Transformer - - 750 Site layout planning Overview Section and Installation Elec / Water / Equip Floor plan Earthwork 7
  8. 8. SITE LAYOUT PLANNING Intro Site layout planning Water plan Item Content Overview Source ‘65tons per day’ is needed. Constructor installed pump(70tons per day). Pump Elec / Water / Equip 170 LPM * 108m * 3.7 ㎾ * 2(1Set) Floor plan Earthwork Structural work Summary 8
  9. 9. SITE LAYOUT PLANNING Intro Site layout planning Overview Equipment Item EA T/C 4 L/C 8 Elec / Water / Equip Floor plan Model DTL 260·18 KTL 1000/ 40 Earthwork Maximum Pulling Maximum Loading R=50m 18 Ton Planning 4 Ruffing T/C → Inside the field 4.2 Ton - - Installing toward Dokok street for soundproofing Dokok street Structural work Summary TC#1 TC#2 TC#3 Dokok Rexle Apt. TC#4 9
  10. 10. SITE LAYOUT PLANNING Intro Site layout planning Overview Elec / Water / Equip Floor plan Earthwork 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 Dokok street Structural work Summary Dokok Rexle Apt. 10
  11. 11. EARTHWORK Intro Conceptual Apt. Construction Flow Site layout planning Earthwork Actual method Structural work G. L Problem Summary Alternative methods Site Layout planning Earthwork WBS Code : GR-C111
  12. 12. EARTHWORK Intro Site layout planning Actual method Ground anchor Earthwork Actual method Problem Alternative methods Structural work Summary 12
  13. 13. EARTHWORK Intro Site layout planning Earthwork Actual method Problem Alternative methods Structural work Summary Ground anchor Actual project 도곡렉슬 - 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 13
  14. 14. EARTHWORK Intro What was the problem? Site layout planning Earthwork σh = γ∙z∙Ka - 2c∙tan(45°-Ф/2) Actual method Problem Road Alternative methods Structural work Summary Soil 14
  15. 15. EARTHWORK Intro Alternative methods Site layout planning Ground anchor Strut √Raker Earthwork Actual method Problem Alternative methods Structural work Summary Soil 15
  16. 16. STRUCTURAL WORK Intro Conceptual Apt. Construction Flow Site layout planning Earthwork Structural work G. L Project Summary financing Technical solution Estimation Site Layout planning Earthwork Structural work WBS Code : GR-C2-A -303 16
  17. 17. STRUCTURAL WORK Intro 60days Site layout planning Earthwork Duration of structural work Profit Structural work Project financing Profit = Total cost x Interest rate x 60/365 Technical solution Estimation Opportunity cost = Profit + Penalty + α Summary Opportunity cost > Cost of alternative method 17
  18. 18. STRUCTURAL WORK Intro Technical solution Site layout planning Earthwork 7days Structural work 1. Form Project financing 2. Steel Technical solution Estimation 3. Concrete Summary 4days 18
  19. 19. STRUCTURAL WORK Intro Site layout planning Earthwork Structural work Case <Evaluation of RC work, 최길홍, 한양대 산업경영디자인대학원> Nation USA(New York) USA(Chicago) Structure system Canada(Toronto) Flat Plate 2days Flat Plate ACS Form(Core) Table Form(Slab) Early-strength concrete VH seperated pouring 4days Wall structure Gang form(Wall) Table form(Slab) Early-strength concrete VH separated pouring 3days Ramen structure Half PC(column, beam) Deck Form(slab) High- strength concrete VH separated pouring 6days ACS Form(core) Deck Form/Table form(slab) High- strength concrete VH separated pouring 4days Estimation Summary Japan Duration (1 floor) Wood form High- strength concrete Pre-Shoring Project financing Technical solution Main issue Korea(Complex) Flat Plate Korea(Apartment) Wall structure Wood form, Al form(slab) Euro form, Al form(wall) Gang form(outer wall) 6~8days 19
  20. 20. STRUCTURAL WORK Intro Site layout planning Earthwork Table form Duration Cost 4days 4days ₩200,000 ₩200,000 Structural work Project financing Problem Technical solution Estimation Summary Alternative method → Al form 20
  21. 21. STRUCTURAL WORK Intro Performed steel arrangement Site layout planning Earthwork Structural work Project financing Technical solution Estimation Summary -2days 21 From KCI(Korea concrete institute)
  22. 22. STRUCTURAL WORK Intro Early-strength concrete Site layout planning Earthwork Structural work 25-24-21 -1days Project financing Technical solution Estimation Summary 22 From Australia cement company
  23. 23. STRUCTURAL WORK Intro MS project Site layout planning Earthwork 4 Days Structural work Project financing Technical solution 7 Days Estimation Summary 23
  24. 24. STRUCTURAL WORK Intro Estimation(ODBC) Site layout planning Earthwork Structural work Project financing Technical solution Estimation Steel Concrete Form Summary 24
  25. 25. STRUCTURAL WORK Intro Site layout planning QTO Material Building part Unit Quantity Cost Earthwork Steel HD-13 Wall ton 9.9t ₩10,791,000 Structural work Steel HD-16 Slab ton 4.2t ₩4,557,000 Concrete 25-24-21 Wall, Slab ㎥ 237㎥ ₩18,232,840 Outline work Wall ㎡ 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 Project financing Technical solution Estimation Summary 25
  26. 26. STRUCTURAL WORK Intro Site layout planning Input process Cost of T/C Earthwork Structural work Project financing Technical solution Estimation Cost of form Summary Cost of concrete Cost of steel 26
  27. 27. STRUCTURAL WORK Intro Cost(4days) BCWP Site layout planning Earthwork Structural work Project financing Technical solution Estimation Summary 27
  28. 28. STRUCTURAL WORK Intro Site layout planning S-curve of 4-days 7 Earthwork Structural work Project financing Technical solution Estimation Summary 28
  29. 29. STRUCTURAL WORK Intro Cost(4days) ACWP Site layout planning Earthwork Structural work Project financing Technical solution Estimation Summary 1.6billion won – 1.8billon won = -0.2billion won 29
  30. 30. STRUCTURAL WORK Intro S-curve of 4-days Site layout planning Earthwork Structural work Project financing Technical solution Estimation Reduced duration Summary 30
  31. 31. STRUCTURAL WORK Intro Financial check Site layout planning Earthwork Reduced duration Penalty, Legal fee Structural work Project financing Technical solution Estimation 1.068billion 0.97billion Summary Rate of bank 1 Year Over cost of new method The penalty of reduced duration (from bank’s aspect) 31
  32. 32. STRUCTURAL WORK Intro Detail finish Site layout planning Earthwork Structural work Project financing G. L Technical solution Estimation Summary Site Layout planning Earthwork Structural work WBS Code : GR-C2-A-O-319 Detail finish
  33. 33. SUMMARY Intro • EV Report Site layout planning 2E+09 Earthwork Structural work Accumulated cost(4day) 1.8E+09 1.6E+09 Accumulated cost(7day) 1.4E+09 Summary 1.2E+09 EV Report 1E+09 Naviswork 80000000 60000000 40000000 20000000 0 2010 3Q 2010 4Q 2011 1Q 2011 2Q 2011 3Q 2011 4Q 2012 1Q 2012 2Q 2012 3Q 2012 4Q 2013 1Q 2013 2Q 33
  34. 34. SUMMARY Intro Time Cost Site layout planning MS project Earthwork QTO Structural work Summary Revit EV Report Time & Cost Naviswork Time 3D model Cost Naviswork 34
  35. 35. Thank you! 35

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