Answer Assignment # 3. ENGR 301 Lecture 12. Examples. Examples

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Ginger Lloyd
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1 NGR Lecture Midterm Revision Answer Assignment #. Table # represent a project on its th month. Calculate the V for each activity and for the total project. Calculate also the following. Cost and schedule variances (CV, SV) Total variance CI & SI stimate at completion (AC) Is this project doing well or not? Subtask Status BCWS Total ACW BCW CV SV TV CI in % Total SI AC Cumulative Cost in thousands Variance $ Week BCWS BCW ACW Schedule Cost AC N = $, Find i = % = $(/F,%,) =$, i = % =(/F,%,)+(/F,%,) +(/F,%,)+(/F,%,) -(/F,%,) = $.

2 Cash flow xample C C Find C i = % C C C = C(/G,%, ) = $(F/A,%,) + (-(/G,%,))(F/,%,) C = $. Cash flow Find i = % = $(/G,%,) - $(/A,%,) = $. i = % Cash flow Find C i = % $ $ $ $ $ $ $ $ $ F = (/G, %, ) = *. =. F =. (F/, %, ) =. *. =. C =. (A/, %, ) =. *. =. $ (/F, %,) = $. $ (/F, %,) = $. $ (/F, %,) = $. $ (/F, %,) = $. $ (/F, %,) = $. $ (/F, %,) = $. $ (/F, %,) = $. $ (/F, %,) = $. $ (/F, %,) = $. = $. $ $ $ $ $ $ $ $ $ $(/F,%,) =$. $(/A,%,)(/F,%,)=$. $(/A,%,)(/F,%,)=$. $(/F,%,) =$. = $. (F/A,%,) F= $(F/,%,) +$(F/A,%,)(.) =$,

3 = +(/A,%,) + (/G, %, ) - [(F/A,%,)+(F/A,%,)+](/F,%,) =$. Cost Control xample roject scope: install LF of underground drainage pipes. Total working hours: WH Current progress: lanned quantities to be completed: LF with WH Actual quantities completed: LF and actual working hours of WH Cost Control xample BCW = % complete * total scope in WH % complete = / = % BCW = % * =. WH to complete LF CV = ACW BCW =. =. WH SV = BCW BCWS =. = -. WH TV = ACW BCWS = = - WH CI = BCW / ACW =. / =. SI = BCW / BCWS =. / =. AC = BAC / CI = /. = WH to complete LF stimated cost overrun at the end of the project = = WH Cost $ Reporting period ACW Cost Control BCWS BCW = V Time variance Total (Accounting) variance Schedule variance Budget at Completion (BAC) Time Cost variance Relationships (NOT ART OF XAM) CM DM Relationship Finish-to-start lead Latest finish of predecessor arliest start of successor Finish-to-start lag Latest finish of predecessor arliest start of successor Start-to-start lead arliest start of predecessor arliest start of successor Start-to-start lag arliest start of predecessor arliest start of successor xplanation + lead time + lead time

4 Relationships (NOT ART OF XAM) Relationship xplanation Finish-to-finish lead Latest finish of predecessor arliest finish of successor + lead time Finish-to-finish lag Latest finish of predecessor arliest finish of successor Start-to-finish lead arliest start of predecessor arliest finish of successor + lead time Start-to-finish lag arliest start of predecessor arliest finish of successor Histogram (NOT ART OF XAM) Activity Time in Days No. of Workers A B C D F G H I CM & DM Calculations. arly start time of first event = (forward pass) () =. Continue the following events as follows (j) = maximum [ (i) + Dij ] from all routes leading to event (j) Dij = duration of activity ij J =,,, n n = last event. After reaching last event start backward pass L (n) = (n) L (j) minimum [L (i) Dij ]. After finishing the backward pass, calculate float The float is the time the activity can be delayed without delaying the project duration. Total float TF (i,j) = L (j) (i) Dij L i Backward Forward L CM S LS F LF Activity i Description j Duration S arly Start LS Late Start F arly Finish LF Late Finish L i j DM Representation CM xample Float. S LS F F D LF Duration Activity Description Remove trees. Site cleaning xcavation Formwork & Rft xca. trenches Sewer lines ouring conc. Grading Other utilities

5 start Drill well ower line xcavate Deliver mat. ump house Install pipe Foundation Assem. Tank Install pump Tower & tank Forward ass (max) Finish Backward ass (min) Legend: S TF F N Description LS D LF ngineering Management roject and roject Management Definitions roject Management Knowledge areas roject hases. Inception - lanning & definition Design rocurement & execution Start-up & commissioning roject Delivery or Methods Traditional hased Fast track roject Stakeholders Organization Structure Functional rojectized - Matrix Types of Contracts Types of Contracts Contract Type Owner Contractor Lump sum Guaranteed Max rice Unit price Cost + fixed fee + sliding Cost + fixed fee Cost + fixed fee + profit Risk Bars sharing Cost + percentage fee ngineering Management roject Delivery Systems Traditional Turnkey Owner Builder rofessional Construction Manager lanning & Scheduling WBS Work Breakdown Structure CM & DM Bar Chart Cost Control Types of costs Measuring inputs and outputs Methods of measuring outputs arned value analysis BCW, BCWS, ACW, BAC, CV, SV, CI, SI, AC Questions Good Luck

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