Construction process management  Welcome to the new challenge

**** ********* ********************** ** **** ******* ********* *** ********** ** Prentice ************ *** deliver ****************** *************** *********** ************* medical ************** ****** *** ******* *********** 21Select ************** ********* selection and ************ ******* **************** ***** ************ plansBring ********* ** siteInterview ********** ********** *** ******* staffOrganizing *** **** PreparationPhysical ********** *** ******************* ****** 0Level ********************************************************** ******** *** ******* *** ****** ** ******* the ************ between ************* ** using ******** ***************** ******** ******* teams ** ********* *** ********* **** ** control ****************** between ***************** qualify *** *********** of completion *********** ********** *** *************** *** **** ********** can be ************* associations ****** *** sequence for *********** ****************** ***** must be ********* ***** ********** information *********** ******** ******** ****** ** informed estimatesIn *** **************** ******** ***** ********* ******* *** **** ******** *** relationships between activities               The ********* information ** known ***** * project            Draw the network ******* *** **** *********************** **** *************** **************************** ******************************************************** ****** ********** ***** **************************** ***** ************ ****** time021214A12               The ********** ******** ***** ** ***** *** ****** ***** *** **** activityManagers *** use *** earliest start and *** times *** ****** ****** and ****** ******* ** ******* ** ******* these *********** ******** ***** time **** for *** ******** ** *** ****** ******** ****** **** ** *** prior eventsThe earliest ****** period **** is *** ******** ******** time *** above its ******** durationEF * ** * * *** ****** ****** time **** *** an event ** the ****** ***** **** of *** ***** ********* latest ***** period **** is *** ****** ****** ********* ******* *** assessed ********** = ** – tSAMPLE * ********* *** ** ** ** and ** ***** *** ***** ***** ** the hospital **************** ******** **** Kramer ***** ************ ****** ** ******** *** ******** ************* ********* *** ***** ***** *** ***** finish ***** ** ***** ** *** ****** node ** **** **** Since ********** * *** B **** ** ************ the earliest start ***** for these ********** *** **** **** The ******** ****** times *** ***** ****** areEFA = * ** * ** *** EFB * * * * ****** *** ******** ***** time *** activities * F *** * ** the earliest finish **** ** ******** **** * ** *** * ** *** *** = ************* = * *** *** * ***** placed ***** ** standards ** *** ******* diagram we define the EF times *** accomplishments * * * * *** ** *** * * * ** = ** *** *** * * + ** = ***** * ** * ** * ** **** ******** *** = 12 + ** = ******* ******** start **** for ******** * * *** latest EF **** of *** *********** preceding ********** ******* = *** * 22 *** * EFD * ********************************************** ** 339 **** **** 5712 2259 6312 **** 2263 *** ***** = ESG * t * ** + ** * 57 EFH * * * 19 * ** * **************************************** ********* *** ****** finish starting ****** start ***** we ***** ** ******** *** latest finish ******** ******** of ******** * ** week ** **** is *** ******** ****** **** ** ********* ** ****** ** ** the latest start time *** ******** * ** *** * *** *** * * 69 – * * 63If ***** * ** ** begin no far ***** **** **** ** *** *** ************ ****** ******** ** ***** **** **** **** *********** *** * ** *** = ** *** *** * ******* latest ***** times *** ***** ****** *** presented ** ****** as *** = ** *** 15 * ** *** * ** *** ** = ** ** **** ** *** = ** – * = ******* ********* *** we *** compute the ****** ***** ***** *** *** immediate *********** ** ******* ***** * ** *** ** = ** LSG * ** – ** = ** and LSE * ** *** ** * **** the **** *** we *** now ******* the latest ***** ***** *** ****** * as **** ** ***** = ** *** ** = * and *** * 24 *** 10 * ********** * *** **** **** *** straightway ** *** *** activities C * *** F The ******** of *** ****** start ***** ** ** *** ******** * ********* LSA = ** *** ** * *** *** **** *** activity B *** *** ****** followers: D and E ** *** ******** of *** ****** ***** ***** of these activities are 9 K6C10G35J4H40B9D10E24I15FinishStartA12F100 ** 339 1919 **** **** **** **** **** **** 690 **** **** 6359 6324 **** 5935 **** 249 *** *** *** *** * *** = ** * 41S = 2S * *** * ** = 0S * ** * ** * ** = 0LSB * * *** 9 = ***************************************** ****** ** the ******* measurement ** **** ** ******** *** ** ******** ***** postponing the **** ***************** ** *** ******** **** have **** ******** **** *** be ******** ** two methods S= ** *** ES ** * * ** *** *********** *** four times *** **** event ** ********* *** critical **** *** project durationActivity Duration ******** ***** **** ****** ***** (LS) ******** ****** (EF) ****** ****** **** Slack ******* ** the Critical ***************************** Start ********** Start (LS)Earliest ****** ********** ****** ********* ********* the ******** Path?A700770-0=0YesB2C4D4E4F3G5The ******* track is ***************** **** * ******* ****** days **** ** 24 daysActivityDurationEarliest ***** ********** Start ************ ****** ********** ****** (LF)Slack ********* *** ******** ******************************************************************************************************************************************** Duration ******** Start **** ****** Start **** ******** ****** **** Latest ****** (LF) Slack (LS-ES) On the Critical ****** * 7 * 0-0=0 **** * * * * ** ***** NoC * * 7 ** ** ***** YesD 4 ** ** ** ** ******* **** 4 ** 15 ** 19 15-15=0 YesF * 21 ** ** ** ******* NoG 5 19 ** 24 ** 19-19=0 Yes   Total ******* costs *** *** ***** ** ******** ***** *** ****** costsActivities *** ** crashed ** ******* *** ********** ********** to ****** Average **** (NT) * ***** time ***** Average price (NC) * ***** **** (CC)Cost ** ***** per *** ********* cost ************** ******* ******* ******* ******* ******* **** —Direct **** ********* | | | * * | 5 * * * 9 ** ****** ************ **** (CC)Normal **** (NC)(Crash ************ time)Estimated ***** for a ****** ********* **** ** ***** ** * ***** ****** *** ***** – NC                     TABLE 21 * DIRECT **** *** TIME **** *** THE ** ******** ******** *************** ****** **** **** (weeks) ****** **** ******* ***** Time (CT)(weeks) Crash **** (CC)($) ******* **** Reduction ****** **** of Crashing *** Week **** ** ****** ** ****** * ***** * ***** * 64000 * 7000C 10 **** 5 **** * **** ** 16000 8 ***** 2 ***** 24 ****** 14 ****** ** ***** ** ***** 6 16000 4 1500G ** 500000 ** 530000 ** ***** ** ******* ** ******* 5 12000I 15 ***** ** ***** * ***** * ***** * ***** * ***** * ***** 5 34000 * **** Totals ******** ************* ************* the ************ ******** *** the ******** ****************** ******** ********** **** of *** ******* ** ** ***** *** ******* ***** *** **** ******* *** ******** ******** ***** ********* * ******* ** indirect ***** & *** *** ************ ****** ** ******* ***** *** total ******* ***** ** ******** The **** ***** ** *** ******* **** *** following ****** *************** 33 weeksA–F–K ** weeksA–C–G–J–K ** ********************** ** ****************** ** ********** ***** * *** ******** path is ********************* * *** ********** ******** to crash *** week ** * at $1000 ***** ** much less **** *** ******** ** a ********** *** *********** ***** ** $28000 *** ******** * Crash ******** * ** *** limit ** three weeks ** *** important **** ****** ********* *** new likely **** ***** are ****************** ** ***** *** ****************** ** ******** net preservations are ********* – 3($1000) = ****** *** total ******* costs *** *** ******** * ****** = $2543000TABLE ** * DIRECT **** *** **** **** *** *** ** JOHN’S HOSPITAL PROJECTActivityNormal **** **** ************* **** ************ Time (CT)(weeks)Crash **** ************** **** ********* ********** ** ******** per **** **** 12 ****** ** ****** 1 ***** 9 50000 * ***** * 7000C ** **** * 7000 * **** 10 16000 8 ***** 2 ***** 24 120000 ** ****** ** ***** ** 10000 6 ***** 4 1500G ** 500000 ** 530000 10 ***** 40 ******* ** ******* * 12000I ** 40000 10 ***** * ***** 4 ***** * 13000 * ***** 6 ***** * 34000 * ********** ******** ******************* ***** * *** critical path ** ***** B–D–H–J–KStep * *** ****** project ** crash *** **** ** *** D ** $2000Step * ***** D ** two weeks The ********* **** ** decline ** project * ***** ****** ******* it ******** * week ** ********** costs ** **** ** ********* costs Crashing * ** *** ****** **** saves **** ***** ** secondary ***** ******* after week ** ** **** ********** costs are ******** ***** ******* still **** the cost ** ******** * ** two weeks ********** **** ***** *** B–D–H–J–K: 64 ******** ****************** ** ******** ******* are ****** $28000– ******** = $32000 Total ******* ***** *** *** ****** – ******** = $2511000 STAGE ***** * ***** ******** * ** *** have *** ***** ***** **** ******** ****** must *** ** ********* to ******* *** ******* ** ******** ******* costsStep 2 ******* *** ** ***** one ** *** ********* ********* ** ****** — ** *** ** B); (G ***** B); ** *** (C *** ** ******* only ***** ******* **** *** costs ** ******** *** **** **** the potential ******* ** ***** *** week The only ****** ******* *** (C ** at *** ******* of ***** *** **** and * ** $4000 *** week ** ****** ******** * to ********** stageStep * *** *** ***** ******** * ** the ******** ****** ************ ********* ** *** ********* it ** on both ******** ***** ******* **** ***** *** B–D–H–J–K: 63weeks *** ****************** ** ********** ******* are $8000 * ***** * $4000 ***** ******* ***** *** ******** *** ***** = $2507000 Step ****** * The ***** routes are still ***************** *** ********************* * *** **** ****** *********** ** **** ***** is ** ***** ********** * *** * simultaneously ** the **** ** ***** *** **** *** ****** ** ***** less than the ******* ** $8000 *** ********* * Crash ********** * *** C ** *** weeks *** ***** *** activity B ******** **** times areB–D–H–J–K: 61 weeks *** ****************** ** ******** *** ******* are 2 ** ***** – ******** * **** ***** ******* costs *** now $2507000 *** **** * ********************* ******* ***** * **** per *** *** ******* **** * $100 *** *** *** **** *** *** ******* ***** ****** *** 14Project Activity and **** *********** Activity *** Cost ****************** **** (days)Normal **** ($)Crash **** *********** **** ($)Immediate **************** ***** 1200—B5 8003 ********* **** **** *** ***** 2000BE5 **** ***** *** ***** 1400EG3 9003 ****** **** ********** **** and direct **** of *** ****************** ******** *** Cost *********** Activity and **** ***************** *************** ***** **** ******* ***** 6002C ***** 5001E 1502F ***** *** 2002 Solution:Original costs: ****** ***** ***** * ***** Total ******** ***** * $250 *** *** *** 21 **** * $5250 ******* **** * $100 *** *** *** 7 **** * **** ***** ******* Costs = ********** ** *** ******** **** is B–D–E–G–H *** *** ******* ******** **** ******** ** ******* E ** *** ***** path *** *** inexpensive **** of crashing **** ** **** per *** ******** **** ******** * ***** ** *********** 3: Reduce the time ***** will ** crashing *** **** **** reduce the ******* ******** to ** **** *** ********** *********** **** Trial = ********** **** Added = ****  2 days = ********* ******** ***** = **** *** day *** 19 days * ************ Cost * **** per *** *** * **** * $500Total ******* **** * ********** **** the **** ** ***** ***** is $250 *** *** ** **** **** the ******* ******** ******** **** *** *** penalty cost *** *** ******* ******************************* * **** ********** of ******************** ************ *** ******** ******* & ******** MediaAhuja ** ***** SP and Abourizk ** 1994 ******* *********** ********** in ******** *** *********** construction ******** John ***** ***** SonsRyavec ** **** and MacCrimmon ** An ********** ***** ** *** **** *********** ********** ******** 12(1) *********

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