• Like
Construction Simulation
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

Construction Simulation

  • 350 views
Published

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
350
On SlideShare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
4
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Purdue University Professor Julio MartinezCE 527-Analytical Methods in Construction Engineering Term Project SrinivasaNookala December 9, 2009 S
  • 2.  Project Overview and Objective Data Collection and Analysis Weather Assumptions Model Proposed Model Results Questions
  • 3. We would like to thank Turner DavisConstruction for allowing us full access to thesite to observe activities. We would also like toadd a special thank you to JR Hudson for hisconsistent timely help and guidance during thecourse of the project.
  • 4. Project Overview and Objective Data Collection and Analysis Improve the fan experience as well as the environment for Weather the student athletes Assumptions Model Proposed Model Results Questions
  • 5. Project Overview and Objective Data Collection and Analysis Expansion requires that subsequent piles be placed for the new addition’s foundation Weather Piles are scheduled for placement between Assumptions November 15, 2009 and January 1, 2010 Model The piles placed are 24” and 16” in diameter, with pile caps consisting of two Proposed Model or more piles Results Questions
  • 6. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 7. Project Overview and Objective Data Collection and Analysis Model the piling activity and explore Weather possible methods to improve the overall efficiency. Assumptions A critical activity preceding the piling Model activity was the excavation  Allows for adequate space for equipment Proposed Model storage and movement  Assures that piling can remain relatively Results constant Questions
  • 8. Project Overview and Objective Data Collection Prior to taking observations, the entire and Analysis group visited the site to watch the Weather excavation and piling activities Activities were identified and defined Assumptions set a standard for the beginning and end of each Model activity assured consistency among different group Proposed Model members Results Questions
  • 9. Project Overview and Objective Data CollectionExcavation Activities and Analysis Truck arrival time: defined at the time when the truck’s rear Weather is completely within the site Backing up: defined as the time it takes for the truck to back Assumptions up to the loading zone for loading. Due to the space constraints, the path for backing up to the loader or exiting the site from the loader can accommodate one truck at a time Model Loading: defined as the time taken to load the truck. This time is stopped and the exiting site activity begins when the Proposed Model double horn indicates the truck is at capacity. Exiting: defined as when the truck clears the path to the Results loader, allowing for another truck to begin backing up Questions
  • 10. Project Overview and Objective Data CollectionPiling Activities and Analysis Positioning: defined as the time it takes for the crane to re- Weather adjust for the pile. Drilling: defined to start when the auger drill begins Assumptions rotating. This activity ends as soon as the drill stops at the desired depth. Drill Extraction: defined to begin as soon as the grout pump Model is turned on. When the auger drill is completely extracted and the grout pump is turned off, the activity is assumed to Proposed Model be over. Cleaning and Placing Metal Collar: defined by the Results excavator and crew. The excavator and crew then clear away soil and excess grout around the pile before and after placing Questions the collar.
  • 11. Project Overview and Objective Data CollectionPiling Activities and Analysis Metal Rod Placement: defined as the time it takes for the Weather crane to place one, reinforcement bar down the center of the pile. Assumptions Steel Cage Placement: defined as the time taken to place the rebar cage into the pile.  Following this, the Positioning activity begins again. Model Grout/Concrete Truck Arrival: defined as the time taken since the last grout truck arrival. A grout truck is considered Proposed Model to have “arrived” when in position next to the grout pump. Grout Truck Admixture Add in: this activity had a 5 minute Results duration. Questions
  • 12. Project Overview and ObjectiveOther Times Data Collection and Analysis Mobilization: Mobilization occurs for one hour at the beginning of the shift, from 8 a.m. until 9 a.m. Weather Changing Auger Sizes (from 16 inches to 24 inches or vice versa): this activity takes 90 Assumptions minutes. Although this was only viewed once while on site, in the model, the 90 minute duration Model is assumed a defined duration. Proposed Model Results Questions
  • 13. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 14. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 15. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 16. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 17. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 18. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 19. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 20. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 21. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 22. Project Overview and Objective Data Collection and Analysis 10 years of data for October and November months (1999-2009) Weather  Data from the National Weather Service Archives for Lafayette, Indiana/Purdue University Assumptions Used the historical data to determine the probabilities Model Proposed Model Results Questions
  • 23. Project Overview and Objective Data Collection Critical precipitation of 0.1 inches is and Analysis chosen Weather Probabilities were calculated upon the occurrence of rain each day Assumptions based on the previous day Model  Probability if it rained yesterday for it to rain today is 0.304 and for it not to Proposed Model rain is 0.696. Results  Probability if it did not rain yesterday for it to rain today is 0.164 and 0.836 Questions for it not to rain otherwise
  • 24. Project Overview and Objective Today Rain Today Norain Data Collection and Analysis Yesterday Rain 0.304 0.696Yesterday Norain 0.164 0.836 WeatherCritical Precip Lvl 0.10 Assumptions Model Proposed Model Results Questions
  • 25. Project Overview and Objective Data Collection 42,000 cubic yards of soil being excavated and Analysis 1/3 of that soil has be excavated prior to Weather beginning the piling activity Placing the lagging is independent of Assumptions excavation  The site is next to a relatively busy road Model (Northwestern, near the Stadium intersection) Both piling and excavation stop for 24 hours Proposed Model when it is raining Results Questions
  • 26. Project Overview and Objective Data Collection Functions on a 24-hour clock and Analysis  The piling crew is assumed to work the time it Weather takes to place ten piles with each day beginning at 8 a.m. Assumptions  The excavation crew works eight-hour days Model  If there is rain on any given day, production for both piling and excavation ceases and the Proposed Model weather is reevaluated after 24 hours has passed. Results Questions
  • 27. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 28. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 29. Project Overview TimeCheck >0 , 0 Soil 42000 >0 , 20 ExcvtrRdy 1 and Objective TrkArrival.Duration 1 ==0 , 0 <QuitTime , 0 >0 , 1 TrkArrival BackUp LoadTrk Data Collection 1 RdyToLd >0 , 1 1 TrkUndrExcvtr >0 , 0 TrkIntArrvl BackUpDur LoadDur >0 , 1 1 >0 , 1 >0 , 1 1 and Analysis 10 ExcavPass Hauls Permit 1 TrkExit >0 , 1 RdyToHaul 1 1 ExitDur 1 Weather SchdConcrTrk >0 , 1 Reposition >0 , 1 RdyToRepos Piles24in ReposDur 1 AugerSize.CurCount==1?1:0 1 SchdConcrTrk.CurCount>1?1:0 PP StartPiling Assumptions 0 Switch ==0 , 0 >0 , 1 PilingRig 1 SteelCage 1 TotalPiles 1 1 SCageDur >0 , 1 >0 , 1 >0 , 1 1 >0 , 0 1 AugerSize.CurCount==0?1:0 Setup PlQty PileQty Drill 1 RdyToExtr >0 , 1 Extract 1 CleanAndCol 1 MetalRod Piles16in Model 60 DrillDur ExtractDur CandCDur MRodDur<ExcavQuad , 0 >=0 , 1 >0 , 1 >0 , 1 PileQuad SchdConcrTrk 1 OrdrConcTrk 1 CTrkArvl 1 MixAdmix 1 ConcrTrk Proposed Model 1 0 CTrkIntArrvl 5 10 1 SwtchAuger16in >0 , 1 Piles24in AugSwtchCntr ==TwentyfourIN , 0 90 1 Results Pass 1 >0 , 1 1 >0 , 1 >0 , 1 ==TwentyfourIN , Piles24in.CurCount Piles24in 10 1 Soil AugSwtchCntr RdyToRepos AugerSize PileQuadCntr 1 1 Questions 42000 0 1 Piles16in ==28000 , 0 ==SixteenIN , Piles16in.CurCount >0 , 1 >0 , 1 >=0 , 1 ==SixteenIN , 0 10 1 PP 1 PilingPermit >0 , 1 QueName1 Piles16in PileQuad SwtchAuger24in 1 1 90 1 0
  • 30. Project Overview and Objective Data Collection and Analysis TotalPiles EvaluateCond TodayRain >0 , 1 RainControl2 Weather 1 >=0 , 1<153 , 0 P:Rain.CurCount==0?0.164:0.304 >0 , 1 1 Assumptions Day RainYorN 1 TimeCheck Rain 24*60 1 0 Model >=0 , TimeCheck.CurCount 1 P:Rain.CurCount==0?0.836:0.696 >=0 , 1 Proposed Model NumOfDays Count TodayNorain >0 , 1 RainControl1 1 0 >0 , 1 Results 1 >=0 , 1 StartPiling 1 Questions
  • 31. Project Overview and Objective Data Collection Critical Issues and Analysis  Initial rate of piling > rate of excavation, Weather due to: Lagging ( prevent caving in of soil Assumptions adjacent to highway) Completion of entrance gates before Model basketball season Proposed Model  Lack of Ramp space Phase I and Phase II process of excavating Results  Number of piles/day Based on value judgment Questions
  • 32. Project Overview and Objective Data Collection Rain distribution and weather and Analysis assumptions Weather Time of construction ( 8hr day) Assumptions Phases of construction in line with the actual progress on the site Model All assumptions validated Proposed Model Results Questions
  • 33. Project Overview and Objective Data Collection Multiplied the grout/concrete truck and Analysis arrival by 0.75 Weather Varied the Soil Quantities Soil Quantity Total Duration Piling Duration Assumptions 28000 33.30 23.19 25000 33.30 21.13 Model 23000 34.45 20.94 21000 35.95 20.92 19000 37.35 21.01 Proposed Model 18660 37.54 20.90 18000 38.01 20.76 17000 38.89 20.97 Results 16000 39.49 20.96 14000 41.00 21.18 12000 42.36 21.22 Questions 10000 43.85 20.93 8000 45.33 21.18
  • 34. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 35. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 36. Project Overview and Objective Original Proposed Duration Difference Data CollectionRun Duration Run Duration Duration StDev C.I. (95%) Range Min Mean Range Max By Duration and Analysis 1 31 1 23 7.8 - - - - - Proposed 2 21 2 20 1.1 4.7 6.6 -2.1 4.4 11.0 Proposed 3 29 3 25 4.2 3.4 3.8 0.5 4.3 8.1 Proposed 4 25 4 19 5.8 2.8 2.8 1.9 4.7 7.5 Proposed Weather 5 20 5 18 2.2 2.7 2.4 1.8 4.2 6.6 Proposed 6 20 6 22 -2.2 3.5 2.8 0.3 3.1 6.0 Original 7 22 7 20 2.4 3.3 2.4 0.6 3.0 5.4 Proposed 8 22 8 19 3.1 3.0 2.1 1.0 3.0 5.1 Proposed Assumptions 9 20 9 18 2.1 2.8 1.9 1.1 2.9 4.8 Proposed 10 23 10 22 0.8 2.8 1.7 1.0 2.7 4.4 Proposed 11 21 11 20 1.2 2.7 1.6 1.0 2.6 4.2 Proposed 12 31 12 20 11.1 3.5 2.0 1.3 3.3 5.3 Proposed Model 13 23 13 21 2.1 3.4 1.8 1.4 3.2 5.1 Proposed 14 22 14 20 1.9 3.3 1.7 1.4 3.1 4.8 Proposed 15 20 15 19 1.2 3.2 1.6 1.4 3.0 4.6 Proposed 16 25 16 17 7.9 3.3 1.6 1.7 3.3 4.9 Proposed Proposed Model 17 23 17 20 2.8 3.2 1.5 1.7 3.3 4.8 Proposed 18 18 18 20 -1.8 3.4 1.5 1.4 3.0 4.5 Original 19 23 19 23 0.3 3.3 1.5 1.4 2.8 4.3 Proposed 20 20 20 20 0.4 3.3 1.4 1.3 2.7 4.2 Proposed Results Questions
  • 37. Project Overview and ObjectiveData Collection and Analysis Weather Assumptions ModelProposed Model Results Questions
  • 38. Project Overview and Objective Data Collection and Analysis Truck Cleaning & Runs Truck Exit Runs Drilling Extracting Metal Rod Backingup Collar WeatherMean %Change 0.0085% 0.0023% Mean %Change 0.0026% -0.0091% -0.0084% -0.0003%StDev %Change 0.0467% 0.0141% StDev %Change 0.0027% 0.0028% 0.0052% 0.0011% Assumptions Model Proposed Model Results Questions
  • 39. IntroductionCritical Success Factors Infrastructure Finance CharacteristicsRisk Management Case Studies Global ViewFurther Research Conclusions