Pgpm 31 Assignment Sheet

 

The project consists of construction of an industrial building with R.C. portal structureadmeasuring 50 M x 18.75 M x 21.25/ 15.5 M. The building should have asbestos-free, fiber reinforced cement sheet roofing with supporting pre-cast R.C. purlins.

III. IMPORTANT DETAILS OF CONTRACT, COST, TIME, TYPE, ETC.:

The Contract is of item-rate based and was awarded after processing throughcompetitive bidding in the Public Tender under CPWD works procedure. The estimated cost of the project was Rs.4.08 Crores and the completed cost of the project was Rs.4.75 Crores. The stipulatedduration of the project was 12 months but the final completion period of the project was 24 months.In this Contract, payment for work done is made on the basis of the quantities of work actually executed and measured, materials supplied and used by the contractor on the project, eachsuch quantity being multiplied by the Contractor’s corresponding unit rate given in his tender for thatitem. In this type of contract, reasonable variations in the tender quantities of the work do not make anysubstantial difference to the Contractor as he gets payment for the actual work at rates specified in thetender.For Contractor to submit this item-rate tender, he was provided with generalspecifications, designs and drawings together with estimates of quantities so has to enable him toassess the magnitude, character and difficulty of the work and the probable cost at which he canexecute it. The Contractor would be entitled to claim an adjustment in his compensation if the actualwork proves to be considerably different in specifications, quality and quantity from the data presentedto him at the time of invitation to tender. The main satisfaction is that he gets unit rates for thequantities actually executed.The only uncertainty to the employer in such contracts is that he will not be in a position to know the actual cost of the job till its completion. But he has an advantage of an earlier startof the work pending, complete detailing of entire work, along with the progress of construction. At thesame time both the Employer and the Contractor will have to keep the detailed accounts of materials,equipment and work for purpose of making interim payments, and for Employer to watch the progress

 

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NATIONAL

INSTITUTE

OF

CONSTRUCTIONMANAGKMENTAND

P_YSlLAnC1J

SCHOOLOFDISTANCEEDUCATION

EXAMINATIONS:DECEMBER2009

NCP26/CBCM4/IDM21:ConstructionProjectManagementTechniquesPGPM22·_:ProjectPlanning

&

Control

Duration:

2

hoursMax.Marks:100Note:Answer

any

E!2lJ1:.

questions

Q.1.a)Statewhetherfollowing

statementsaretrueorfalse.

In

caseof

a

false

(l0)·J.

statement,writethecorrectstatement.i)Criticalpathgivestheminimumtimerequiredforprojectcompletion.

ii)

Criticalpath,onceidentified,remainscriticalthroughouttheprojectimplementationtillitscompletioniii)Duringcompression,amongactivitiesalongacriticalpath,theactivitywithhighestcostslopeiscompressedfirst.

IV)

Theamountoftimebywhichanactivitycanbedelayedfromitsearlystartwithoutdelayingtheearlystartofthesucceedingactivityiscalledtotalfloat

."

J_~.

v}

EarnedvaJue

is

theactualcostofworkperformed...b)Answerthefollowing.

(Anythree)

(15)

i)

The-meanexpectedprojectcompletiontimeforaconstructionprojectis75weeks,withstandarddeviationof5.6weeks.Whatwillbetheexpectedprojectdurationfor50%confidenceofwithin-timecompletionoftheproject?

ii)

Foractivity

'P',

the

normal

durationandcrashdurationare

6

and

4

daysrespectively,andthecorrespondingdirectcostsareR

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