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Mardiaman , Daud Surbakti . (2022). Study Of Progress Difference

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Eduvest – Journal of Universal Studies

Volume 2 Number 10, October, 2022

p- ISSN 2775-3735 - e-ISSN 2775-3727

STUDY OF PROGRESS DIFFERENCE ON BUILDING

CONSTRUCTION WORKS

Mardiaman

, Daud Surbakti

Universitas Tama Jagakarsa

Universitas Mpu Tantular, Indonesia

Email: [email protected], surbakti[email protected]

ABSTRACT

The progress of construction work has different deviations at a

certain point in time. Various factors cause inequality. A

positive progress deviation indicates that construction work is

completed faster where the progress of the plan is lower than

the actual one, otherwise it is said to be late if it is negative.

The uncertain nature of construction work causes there are 3

(three) scenarios of possible progress deviation values, so that

these three values form one expected progress deviation value.

A deviation of value greater than negative 10% for a duration

from 0 to 70% is categorized as a critical contract. The purpose

of this study was to determine the deviation of the progress of

29 construction works. Data collection was carried out on 29

construction works that had been carried out. The data is taken

directly from the contractor. The results of data analysis

showed that at 10% D, 11 construction works with poor

performance were obtained. Information was also obtained

that the construction work No. 12 have critical contracts (-

11,773). Furthermore for the current construction work 30%D.

50% D and 70% D number of poorly performing construction

works 12; 10; and 9. The value of the largest positive progress

deviation is 15,362 at the 70% time point D. The expected value

of the largest positive progress deviation is positive 1,763. By

knowing the expected negative progress value, the contractor

must exercise control as soon as possible before the contract

expires. Acceleration can be done on activities that are on the

critical path.

KEYWORDS

Construction Work, Deviation Of Progress, Yield Value,

Expected Value, Uncertainty

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Mardiaman , Daud Surbakti

Study of Progress Difference on Building Construction Works.

1977

INTRODUCTION

Work construction often experience delays that cause losses to contractors ,

consultants and owners good that time and money (Hassan et al., 2016) . Type

profession construction miscellaneous . one _ delivered is profession building

storied . High -rise buildings in general shared Becomes two , building graded low

and building graded high .

From the side contractor , lost time cause source power no could quick

drawn from location project . This cause happening swelling cost . Lateness be

measured with no the fulfillment of the work progress that has been planned in

schedule parent . Many factors cause _ why lateness occur (Mardiaman &

Indriasari, 2021) ; (Hassan et al., 2016) ; ( Shahsavand et al., 2018) . Lateness often

caused by contractor no capable provide appropriate funds with the progress of the

plan that has been compiled . Often an advance payment has been found given

diverted to project another . This occur because contractor work more from one

profession construction in time simultaneously . For prevent lateness contractor

must To do analysis the cause (Shahsavand et al., 2018) . Besides that must

identified factonrya (Asmi & Pratama, 2016) Stability finance must available for

finance profession construction . According to (Mardiaman, 2020) that criteria

stability finance Becomes most important criteria for choose contractor so that

profession construction can success . one _ success profession construction seen

from side suitability time plan .

Work progress construction could seen every period time . generally

evaluated every week at the time meeting weekly . Meeting weekly generally

attended element owners , consultants and contractors . On every meeting all

problem about achievement of progress and weekly targets discussed by together

according to ability . Target time customized with availability source power and

condition field. However resources that should provided no fulfill good from side

amount and quality.

In practice , progress can be experience deviation , fine positive and negative

. The deviation of progress is difference between plan and actual progress . The size

deviation is score results profession construction , Yield value Becomes criteria in

evaluation value performance _ vary . This value must traced (Amruta B. Vyas &

BV Birajdar, 2016) . Yield value is one _ technique control profession construction

(Suharto, 2007) ; ( Bhosekar & Vyas, 2012) . Time and costs incurred is reflection

achievement progress (Huda et al., 2018) .

Because of the nature profession construction that is not certain then

progress will be character probability , can fulfilled and not fulfilled . more and

more information obtained so level probability the more high , worth zero until with

one . There is progress pessimistic , most likely and optimistic , so that from all

three will shape one score hope for progress (Mardiaman & Kusuma, 2021) .

The purpose of this study was to determine the deviation of the progress of

29 construction works.

Eduvest – Journal of Universal Studies

Volume 2, Number 9 , September, 2022

1978

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Weight Work

Work item weight obtained dengsn compare between ` cost start of work

item certain with total cost (Mardiaman, 2022)

 















(1)

= Cost activity type i











= Total project cost

Curve weight cumulative basically _ shape S curve . At first achievements

percentage project rather small increase , then will the more increase fast because

condition work and resources power many deployed to location . Achievement of

progress in the end slow down because start occur withdrawal source power and

work almost done worked on . At the end project the total progress achieved is 100

percent (Figure 1).

Figure 1. The formed S curve of weekly progress

Deviation of Progress

The deviation of progress is difference Among progress plan and actual .

Deviation value could positive and negative (Figure 2).

Figure 2. Deviation plan and actual .

Mardiaman , Daud Surbakti

Study of Progress Difference on Building Construction Works.

1979

Draft Probability in Work Construction

Project progress results no sure , where is the value will different between

job construction . In general shaped asymmetrical and is called beta curve (Figure

3).

frekuensi

5 D

4 C

3 B

2 A H

1 J

a b c d e f g h i j k

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Figure 3. curve distribution of work progress construction

After determine estimation the numbers a, b and m then next formulated

connection third number the Becomes one a number called “ pe ” or period expected

time . _ Pe number is the average if activity the done by repeated in large amount .

_ the progress that expected formulated :

= (a + 4m + b)/6 ( 2)

a = pessimistic progress taken the smallest .

m = progress most likely taken as average

b = optimistic progress take the biggest

density

probabilitas

a m te b

Figure 4. curve distribution asymmetric (beta) with a, m and b

Approach score hope consider that score hope for score results depend on

estimate three number estimation .

Eduvest – Journal of Universal Studies

Volume 2, Number 9 , September, 2022

1980

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Contract Critical

Part five chapter 36 of candy PUPR No. 14 of 2020 regarding standards and

guidelines provision service construction mention that down payment given by a

maximum of 30% of score contract for effort small , maximum 20% for

qualification effort medium and large . While for contract year the biggest plural

given 15% ( Regulation of the Minister of Public Works and Public Housing of the

Republic of Indonesia Number 07/PRT/M/2019 concerning Standards and

Guidelines for Procurement of Construction Services Through Providers, 2020) .

With advance payment _ expected profession construction no experience contract

critical . In accordance with PU Ministerial Decree No. 07/PRT/M/2011 PK book

06A-Chapter VII B6 Number 39.2, contract declared critical when :

1. Period I ( plan physique implementation 0% - 70% of contract ), realization

physique implementation late more big 10% of plan .

2. Period II ( plan physique execution 70% - 100% of contract ), realization

physique implementation late more big 5% of plan . Study determine big

deviation of work progress construction in the period of 10%, 30%, 50%, 70%

of duration profession construction and big deviation of progress in the period

of 10%, 30%, 50%, 70% of duration profession construction .

On some profession construction occur contract critical so that need

conducted show case meeting (SCM). Implementation of SCM with inviting office

maker commitment (PPK), contractor , consultant supervisor . At the PPK meeting

, they asked explain reason lateness work and ways speed up profession in

accordance with ability them and still received the reason .

Contractor make plan work with a certain progress target so that less

progress _ from 10% for period 1 ( plan physique implementation 0% - 70% of

contract ).

RESEARCH METHOD

Research data collected _ in the form of primary and secondary data .

Secondary data in the form of timetable time plan and actual . There are as many as

29 jobs collected construction _ start 2016 to 2021. Duration _ profession

construction start from 18 months up to 64 months . Schedule data collected from

selected contractors and consultants _ with purposive sampling method . Due to

duration profession construction different , then conducted equation time based on

percentage times total duration time for every profession construction . The average

deviation of progress uses formula 5.

 













(5)

Yield value hope deviation of work progress construction calculated with

step following :

• Big deviation of progress every week all profession construction ,

• deviation , average, maximum from all profession construction

• Count score hope the deviation of the progress of hope profession

construction

• Big score results deviation progress hope using formula 2:

  󰇛    󰇜󰇛󰇜

Mardiaman , Daud Surbakti

Study of Progress Difference on Building Construction Works.

1981

• Count deviation of progress at time activity in progress for 10% of

duration plan .

• Count deviation progress at the moment activity in progress for 30% of

duration plan .

• Count deviation progress at the moment activity in progress for 50% of

duration plan .

• Count deviation progress at the moment activity in progress for 50% of

duration plan .

RESULTS AND DISCUSSION

From result processing of collected data obtained that the progress of each

profession construction different different at the point time certain . Progress value

there are positive and negative . Deviation worth positive signify that profession

construction perform good , on the other hand if deviation worth negative state that

profession construction perform bad . `

In table 1 it is explained that there are 4 periods rated time _ quantity

deviation progress that is, at the point time profession construction 10%, 30%, 50%

and 70% of plan physique implementation contract . At the time of 10%D obtained

11 projects perform bad be marked with the deviation of progress is worth negative

, Next for profession 30% constructionD . 50%D and 70%D perform bad in a row

12; 10; and 9. On the contrary amount profession performance construction _ good

with score positive progress deviation at 10%D , 30%D. 50%D and 70%D

respectively as many as 8, 17, 19 and 20.

Table 1. Big Deviation of Progress at 29 Jobs Construction

pack.

Construction

S10%D

S30%D

S50%D

S70%D

0.375

1.029

-3.418

0.458

0.375

1.029

-3.418

0.458

0.200

-1,800

-0.100

4,600

0.090

0.240

0.420

0.370

0.200

-1,800

-0.100

4,600

-0.209

-2.088

2,725

1.865

-0.110

0.540

-0.080

0.100

-2.419

6.104

2.133

2,283

-0.110

-0.460

-0.380

0.400

-2.419

6.104

2.133

2,283

0.090

-0.960

-1.010

-1,600

-0.278

-11,773

-9.010

4.506

-0.920

-0.640

0.040

-8.380

-0.940

0.180

0.300

-7,580

0.400

1,200

0.000

-0.300

0.150

-0.300

0.050

-7,500

-0.574

-0.533

-5.045

-4.151

0.090

-0.530

0.650

-0.200

-0.899

-1.087

2.447

0.581

1,670

2.93

1.4

-1,500

Eduvest – Journal of Universal Studies

Volume 2, Number 9 , September, 2022

1982

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0.462

6.686

3.297

6.897

5.710

9,811

7.231

0.403

4.152

6,529

3.072

2.201

2.184

7.482

1,099

2,942

0.100

9.754

9.006

15,362

1.016

1.073

1.216

2,915

-0.765

1971

-8,870

-7,430

0.287

-8,807

7.628

2.851

Source data processing

For hopeful progress when 10 %D is obtained 0.73, Next for profession 30%

constructionD . 50%D and 70%D perform bad consecutively 0.362; 0.285 and

1564. Work the best construction performance is profession construction 25th with

_ score positive progress deviation biggest 15,362 at S70%D.

Table 2. Job Expectation Progress Construction

S% D

SPe

S10% D

-2.419

0.273

5.710

0.730

S30% D

-11,773

1.034

9,811

0.362

S50% D

-9.010

0.429

9.006

0.285

S70%D

-8.380

0.601

15,362

1.564

Source data processing

Table 1. explains that of 29 jobs construction there is 1 job great

construction _ deviation progress more from negative 10% i.e. negative 11.773%

so that enter category contract critical . Contract critical this need controlled . Big

small deviation is known after monitoring and reporting .

Based on reporting , project 12th need _ conducted acceleration with stage

deployment resource optimally . At the moment S30%D looks occur there is

progress progress. Be marked with happening subtraction deviation to (-9.01) and

at S50%D to (4.506).

At S70%D value deviation already Becomes positive 4,506. This thing state

that profession construction this in the end perform good . Work this experienced 1

time contract critical because progress worth more small of (-10%).

Discussion

Big deviation of progress between one profession construction with others

_ of course just fickle big , because of course various factor influence success

profession construction . Influencing factors _ can from inside and outside . Factor

outside difficult intervened temporary for internal factors can intervened .

Acceleration easy conducted if the problem from in in other words acceleration can

done . one _ the method with increase working hours (Frederika, 2010) . Various

factor as reason delay in progress. This thing already proven from study before

(Milah et al., 2019) ; ( Gerawork Jembere et al., 2020) .

On project 12th happened _ contract critical because deviation of progress

is worth (- 11.773) so that Required performed SCM. S how cause meeting (SCM)

was held because big more progress deviation of (-10%). For reduce big deviation

Mardiaman , Daud Surbakti

Study of Progress Difference on Building Construction Works.

1983

worth negative need conducted efforts maximum . Priority solution profession

certain that can done by together must noticed . It is also necessary to pay attention

dependent work one each other on the track critical. Speed up work on track critical

is a good strategy.

Of course just in speed up work on track critical need conducted with add

power work , add tool . no in accordance achievements profession construction

often occur because not enough consistency contractor carrying out job. There are

various the cause that is happening planning that doesn't in accordance with

condition field . Of course just this cause happening addition time for correct repeat

planning . Contractor no put source power in accordance with needs join donate

happening delay . Understanding to method work also suspected as contributor

lateness implementation construction .

Method work actually already proposed by the contractor at the time submit

offer project at the moment auction. However, many only limited theory because

no truly visit field. At the moment meeting preparation the field (pre construction

meeting) has also been discussed. Election contractor by right on time auction

determine in success project.

CONCLUSION

Based on discussion previously so concluded namely : Work construction

character no certain with existence difference deviation of progress in the case

studied . Various factor the uncertainty that affects good external and internal to

existence uncertainty There are 3 (three) scenarios possibility occur the deviation

of progress is pessimistic, most likely and optimistic that make up one score hope.

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