CC BY
17
DOI 10.18551/rjoas.2019-01.52
IMPLEMENTATION OF VALUE ENGINEERING IN MARKET DEVELOPMENT ON YOS SUDARSO STREET IN ANGGANA DISTRICT, KUTAI KARTANEGARA REGENCY
OF EAST KALIMANTAN, INDONESIA
Purwanto Ary*, Researcher Kustamar, Wedyantadji Bambang, Lecturers National Institute of Technology, Malang, East Java, Indonesia *E-mail: ar141to@yahoo.co.id ORCID 0000-0003-2743-5592
ABSTRACT
The objectives of this present research are to: 1) know the elements potentially saved or made it efficient by using value engineering method; 2) know how far this efficiency can be implemented in the market development project. This research uses observation method. Moreover, the secondary data of this present research are in form of supporing data which are made as input and references in doing VE Analysis. The result of this research, after doing calculation of footing structure redesign, shows that the dimension result is greater than the initial planning, but the footing of Pile Cap (P1 & P2) is able to work by itself to have a load on it without combining with pile. Roof structure does not have significant structure redesign; it is only on the working of WF steel column, WF truss leg, and WF Dimension Hemishphere can be minimized so that the cost or the budget for the project can be saved. The work of footing structure is in line with the initial calculation and after doing value engineering, it obtains the initial design budget is of IDR 1.424.428.066,51 and the cost of value engineering analysis result is of IDR 351.280.587,88. It means that by implementing value engineering, it can save IDR 1.073.147.478,63 with saving percentage is of 75,339%. The work of roof structure is in accordance with the initial calculation result and after doing value engineering, it is obtained that the initia design cost is of IDR 885.493.900,20 and the cost of value engineering analysis result is of IDR 751.756.078,50. It shows that by implementing the value engineering, it can save IDR 133.737.821,70 with saving percentage is of 15,133%.
KEY WORDS
Value engineering, market, streets, reconstruction, budget.
Value Engineering (VE) is an organized creative approach which its function is to optimize the cost and/or the performance of a facility or a system (Dell'Isola, 1997). The approach used is directed to function analysis. If it does not have beneficial characteristics to the needs, the cost is spent without decreasing the quality and it still protects the environment as wel as prioritizes safety (Paraoulaki, 2000; Azis, 2016).
VE is used to search alternatives or ideas which aim to gain better/lower cost from the planned price previously with functional limitation and work quality (Ibusuki & Kaminski, 2007). Besides, VE can also be used to improve performance, quality, and life cycle cost. In VE planning, it usually involves the project owner, planner, the experts, and VE consultants (Kelly & Male, 2003).
It is expected that by implementing this value engineering, it will save cost of 25%. It extremely provides saving benefits for the project owner and also for the project implementers. Based on the data obtained from PT. Setia Jaya Utama, the research conducts a review in form of a research regarding to value engineering in the project of Market Development in Yos Sudarso Street in Anggana District, Kutai Kartanegara Regency, East Kalimantan, so that in this research, the researcher provides a title with "Implementation of Value Engineering in Market Development in Yos Sudarso Street in Anggana District, Kutai Kartanegara Regency, East Kalimantan". However, for this present research, the research only focuses on footing work and roof truss. With the presence of reinforced
concrete footing with the combination of pile and pile cap as well as WF steel truss 200x100x5.5x8, it is expected that the project can save budget much.
Research Questions:
• What are the costs components potentially saved or made it efficient by using value engineering method in Market Development project in Yos Sudarso in Anggana District, Kutai Kartanegara Regency, East Kalimantan?
• How far this efficiency can be implemented in the project of Market Development in Anggana District, Kutai Kartanegara Regency, East Kalimantan?
Research Objectives:
• To know the cost components potentially saved or made it efficient by using value engineering method in Market Development project in Yos Sudarso in Anggana District, Kutai Kartanegara Regency, East Kalimantan;
• To know How far this efficiency can be implemented in the project of Market Development in Anggana District, Kutai Kartanegara Regency, East Kalimantan.
METHODS OF RESEARCH
In this research, a strategy recommended by Brinkkemper (1996) is used with the aim to be able to answer the questions in the research. There are three factors affecting the type of research strategy, which are (Afandi, 2010):
• The type of questions asked;
• The width of control had by the researcher on the event that will be studied;
• The focus on the contemporary event as the reverse of historical event.
The research method used here explains about what method that will be used in this research. The strategy in determing the research method can be seen in the table below:
Table 1 - Strategy of Choosing Research Method
Strategies Questions forms of the researcher Control from the researcher with an action from actua research Level of focus from previous research similarity
Analysis Who, what, where, how many No No
Historical How, why No No
Case Study How, why No Yes
Data Collection Method. Data collection method is the techniques or ways used by the researcher to collect data. In collecting data, it also needs data collection instrument which is the selected helping tool and used by the researcher in the activity of collecting data in order that the activity becomes systematic. The data used in the research consist of two types namely: Primary Data is the data taken directly from the research object. The primary data is the main data used for value engineering analysis. Primary data in this research can be in form of project technical data, like project figure, Budget Cost Plan (RAB), Working Plans and Conditions (RKS). Secondary Data is the data obtained indirectly from the research object. In this research, secondary data can be in form of supporting data which are taken as input and reference in doing VE analysis (Younker, 2003). Secondary data comprise of list of unit price or working analysis, material data, material, and building tools used, workers data, rules than can be made as a reference in doing VE analysis (Miles, 2015).
Observation is a direct observation to the research object to see the project done closer. Observation is done in the phase of information collection. Primary data colletion method is done by direct survey to consultans and implementers who handle the project and doing observation directly to the field. While, for secondary data collection method, direct survey to institutions or companies considered involving is done. The companies can cover building material companies, contractor, and other companies that can be taken as a reference.
The decision taken is based on the condition of the environment or the existing condition, like certain condition, risky condition, uncertain condition, and conflicting condition. In decision making, there are some models like:
• Quantitative model (in this case, mathematical model) is a series of right assumption stated in the series of certain mathematical relation. It can be in form of equation or other analysis, or is an instruction for computer, in form of programs for computer;
• Qualitative model is based on the assumptions in which its accuracy is less if compared to quantitative model and its characteristics are portrayed through combination from the assumption deductions and with more subjective consideration related to process or problem in which its solution is made in model. Gullet and Hicks provide some model classifications of decision making which is frequently used to solve such problems (in which its result is less known accurately);
• Probability model; in general, its decision models are probability concepts and the concepts expected provide certain results.
Data Analysis. The analysis used to answer both research questions in this research is VE analysis.
RESULTS OF STUDY
Project Description. General Data of the project of Market Development in Anggana District, Kutai Kartanegara Regency, East Kalimantan is as follows:
• Project Name: Market Development in Yos Sudarso; Street, Anggana District, Kutai Kartanegara Regency, East Kalimantan;
• Project Site: Anggana District, Kutai Kartanegara; Regency, East Kalimantan;
• Project Owner: Office of Human Settlements and Spatial; Planning of Kutai Kartanegara Regency;
• Management Consultant: PT. Bennatin Surya Cipta;
• Implementer Consultant: Gemilang Surya Inti;
• Implementer Contractor: PT. Setia Jaya Utama;
• Building Width: ± 1.190 m2;
• Cost: IDR 25.331.101.000, -.
Information Phase. This phase is the process of search and information collection aiming to obtain clear comprehension from study items which will be reviewed or studied by collecting supporting data as many as possible. Information result or the data can be seen in the table below.
Table 2 - Data Information
Project Data: MARKET DEVELOPMENT ON YOS SUDARSO STREET
Item: Work of Concrete and Steel Structure (Beam, Column, and Steel Roof)
No Information Source Obtained Data
1 PT. SETIA JAYA UTAMA > Plan Description
> Detail Figure
> Cost Budget Plan (RAB)
> Asbuilt Drawing Figure
Source: PT. Setia Jaya Utama.
Table 3 - Data of Technical Project
Project Data: DEVELOPMENT OF PERSADA HOSPITAL BUILDING
Item: Work of Concrete Structure (Beam, Flat, and Column)
No Description Obtained Data
1 Criteria of Concrete and Steel Design Desain Beton > Concrete quality used K-225
Design > Steel quality used fu 320 Mpa
> Steel quality used fy 240 Mpa
Source: PT. Setia Jaya Utama.
Type of portal constructionReinforced concrete:
• Quality of concrete: K-225;
• Quality of plain steel bars: U. 24;
• Quality of threaded steel bars: U. 32. Type of roof: WF Steel:
• Strong melting (fy): 240 Mpa;
• Strong breaking (fu): 320 Mpa.
The regulations used in this research are as follows:
• Regulation of Indonesia Loading for Building, 1983;
• Operational Standard of Concrete Calculation for Building SNI- 2847-2002;
• Ir. Gideon H Kusuma M. Eng, Basics of Reinforced Concrete Planning, Erlangga Jakarta.
Initial Condition of Project. The real condition or the condition in the field for base structure or footing in the project of Market Development in Anggana District, Kutai Kartanegara Regency, East Kalimantan uses combination between pile cap and pile. For more detail footing structure, it can be seen in the table below.
Table 4 - Footing Condition
No Description Material Dimension Quality
1 P1 Pile Cap Reinforced Concrete 65x65x30 K-225
2 P2 Pile Cap Reinforced Concrete 155x80x30 K-225
3 Pile Reinforced Concrete 25x25 -
Source: PT. Setia Jaya Utama.
The Work of Column Structure. The real condition or the condition in the field column structure in the project of Market Development in Anggana District, Kutai Kartanegara Regency, East Kalimantan uses reinforced concrete material in which it can be seen in the table below for more details.
Table 5 - Initial Condition of Column Structure
No Description Material Dimension Quality
1 KP Column Reinforced Concrete 15x15 K-225
2 K1 Coumn Reinforced Concrete 20x20 K-225
3 K2 Column Reinforced Concrete 25x25 K-225
Source: PT. Setia Jaya Utama.
The real condition or the condition in the field for roof structure in the project of Market Development in Anggana District, Kutai Kartanegara Regency, East Kalimantan employs WF Steel material in which the more detail can be seen in the table below.
Table 6 - Initial Condition of Roof Structure
No Description Material Dimension
1 Main Structure WF Steel 200x100x5.5x8
2 Gording C Steel 100.50.20.2,3
3 Roof Cover Spandek
Source: PT. Setia Jaya Utama.
Identification of High Cost. From the analysis of the project cost budget plan of Market Development in Anggana District, Kutai Kartanegara Regency, East Kalimantan, the complete cost budget recapitulation can be seen from the table 7.
It can be seen that the biggest weight work is in the market stall for concrete work (16,489%), roof construction work (9,732%), and footing (6,186%). For market ward work, the highest weight percentage is in concrete work item (6,927%).
Table 7 - Cost Budget Recapitulation
NO ITEM PEKERJAAN BIAYA Weight (%)
A. MARKET WARD
A1 PREPARATORY WORK IDR 11.287.360,00 0,049
A2 LAND WORK IDR 133.625.951,80 0,580
A3 FOOTING IDR 730.899.024,85 3,174
A4 CONCRETE WORK IDR 1.595.109.923,61 6,927
A5 ROOF CONSTRUCTION WORK IDR 768.272.937,87 3,336
A6 INSTALLATION WORK IDR 1.221.680.506,40 5,305
A7 PAINTING WORK IDR 112.767.149,01 0,490
A8 FLOORING WORK IDR 485.351.086,15 2,108
A9 DOOR & WINDOW WORK IDR 9.153.189,43 0,040
A10 SANITY WORK IDR 6.551.760,00 0,028
A11 DIRTY WATER CHANNEL WORK IDR 39.777.306,80 0,173
A12 CKEAN WATER CHANNEL WORK IDR 56.080.738,00 0,244
A13 ELECTRICITY WORK IDR 132.708.806,00 0,576
A14 CIRCUMFERENCE CHANNEL WORK IDR 1.030.272.096,21 4,474
A15 LEFT & RIGHT FENCING WORK IDR 511.609.741,56 2,222
A16 REAR FANCE WORK IDR 224.045.795,13 0,973
A17 CONCRETE ROAD WORK IDR 2.666.991.665,48 11,581
B. MARKET STALL
B1 FOOTING IDR 1.424.428.066,51 6,186
B2 CONCRETE WORK IDR 3.796.245.065,18 16,485
B3 ROOF CONSTRUCTION WORK IDR 2.241.117.376,37 9,732
B4 INSTALLATION WORK IDR 2.059.554.583,83 8,944
B5 FLOORING WORK IDR 459.881.050,40 1,997
B6 DOOR & WINDOW WORK IDR 476.657.791,05 2,070
B7 CEILING WORK IDR 223.082.123,27 0,969
B8 PAINTING WORK IDR 198.859.474,70 0,864
B9 OTHER WORKS IDR 210.103.193,50 0,912
B10 SANITY WORK IDR 7.419.840,00 0,032
B11 DIRTY WATER CHANNEL WORK IDR 23.422.209,60 0,102
B12 CKEAN WATER CHANNEL WORK IDR 26.499.346,00 0,115
B13 ELECTRICITY WORK IDR 143.146.260,00 0,622
B14 CIRCUMFERENCE CHANNEL WORK IDR 382.019.067,04 1,659
B15 CONCRETE ROAD WORK IDR 967.437.309,21 4,201
B16 WASTEWATER TREATMENT PLAN WORK IDR 362.933.821,45 1,576
B17 SCREEN GRIT & BALANCE TANK WORK IDR 70.173.282,00 0,305
B18 CHLORINE & MONITORING CONTACT IDR 8.571.122,45 0,037
B19 RAIN WATER TANK 3x5x2.25 m3 IDR 210.537.982,38 0,914
GRAND TOTAL OF STANDARD WORKS IDR 23.028.274.003,22 100,000
BKF IDR 23.028.274.003,22
VAT 10% IDR 2.302.827.400,32
Grand Total of Works IDR 25.331.101.403,54
Rounded to IDR 25.331.101.000,00
Source: PT. Setia Jaya Utama.
To determine the work type which has high cost or expence, calculation as shown in the table below is used, but for work item selction, it only uses Market Stall work because there is a work for Market Stall having a high weight relatively.
From table 8 above, it can be known that the comparison of working item cost tota towards the entire working items like concrete work, footing, and roof construction work. Then, from the table above, it also can be known that the concrete work has the highest weight of 50,88%, then the second highest weight is on the roof construction work of 30,03%, and the third highest weight or the last is on the footing of 19,09%.
After obtaining three working items above, the working item weight on concrete work is not that effective to have value engineering because there are several sub-works with a relatively small work in the concrete work. Therefore, for value engineering, it is more optimized on footing and roofing and value engineering done by conducting structure redesign by not changing both the form and the function of the structure. Thus, alternative of footing and roofing structure will be done as expected which is strong, efficient, and safe.
Table 8 - Break Down Analysis
NO. WORKING ITEMS TOTAL PRICE TOTAL WEIGHT OF PRICE (%) CUMMULATIVE CUMMULATIVE WEIGHT (%)
B1 FOOTING
1, Procurement of pile 25x25 IDR 801.870.960,00 19,09 IDR 1.424.428.066,51 19,09
2, Piling of pie 25x25 IDR 351.738.432,00
3, Rebated Concrete t=5 cm IDR 9.842.957,14
4, P1 Pile Cap (65x65x30 cm, K-225) IDR 71.250.216,29
5, P2 Pile Cap (155x65x30 cm, K-225) IDR 189.725.501,08
Total IDR1.424.428.066,51 --
B2 CONCRETE WORK
1, Rebated Concrete t=5 cm, K-100 IDR 147.287.644,87 50,88 IDR 5.220.673.131,69 69,97
2, Basement t=12 cm wiremesh reinforce M-8, K-225 IDR 986.987.681,51
3, Sloof 20/30, K-225 IDR 633.369.458,09
4, KP Column (15/15) (K-225) IDR 87.465.016,77
5, K1 Column (20/20) (K-225) IDR 335.698.133,46
6, K2 Column (25/25) (K-225) IDR 213.522.384,60
7, B1 Beam (15/15) (K-225) IDR 128.801.977,25
8, B2 Beam (20/30) (K-225) IDR 6.782.344,43
9, B3 Bam (20/30) (K-225) IDR 417.994.334,04
10, B4 Beam (15/25) (K-225) IDR 102.158.547,20
11, K2 Column (25/25) (K-225) IDR 18.477.898,67
12, Roof base flat t=12 cm (K-225) (K-225) IDR 554.983.429,89
13, Water proofing of roof base IDR 162.716.214,40
Total IDR3.796.245.065,18 -
B3 ROOF CONSTRUCTION WORK
1, WF Column 200x100x5.5x8 IDR 65.897.220,48 30,03 IDR 7.461.790.508,07 100,00
2, WF Truss Leg 200x100x5.5x8 IDR 770.173.764,36
3, WF Hemisphere 200x100x5.5x8 IDR 49.422.915,36
4, Gording C100.50.20.2,3 IDR 438.539.511,48
5, Treckstank iron with diameter 10 mm IDR 33.089.968,79
6, Thick Stiffener Rib t=8 mm IDR 21.836.954,16
7, Plendes flat, flat for bolt coupling t=10 mm IDR 49.284.792,38
8, Steel Square with width 70.70.7 as gording holder IDR 28.513.220,40
9, Tensile member with diameter 19 mm IDR 68.793.378,14
10, Strong needle with diamter 19 mm IDR 2.145.290,00
11, Colourbond spandek roof cover IDR 310.953.362,54
12, Colourbond spandek ridge IDR 18.467.621,90
13, Alluminium foil 1 side+ glass wool with thickness 10 cm + harmonica wire IDR 203.942.661,19
14, Flashing alluminium IDR 29.090.668,80
15, Listplank spandek IDR 69.692.594,40
16, HTB Bolt with diameter 12 mm IDR 11.657.100,00
17, Anchor bolt with diameter 16 mm, Width =40 cm IDR 22.062.320,00
18, Zinc Chromate Paint IDR 47.554.032,00
Total IDR2.241.117.376,37 -
Function Analysis. For function analysis for footing, total or combined footing structure calculation will be done from pile cap footing and pile. It is because in the structure planning, it only conducts interrelated planning between pile cap footing and pile.
Table 9 - Unit Price Analysis of Applying Profile Iron (per 1 kg)
Coef Unit Material Unit Price Total
1,15 Kg WF Steel IDR 36.000,00 IDR 41.400,00
Total (1) IDR 41.400,00
0,060 Person Workers IDR 88.000,00 IDR 5.280,00
0,060 Person Welder IDR 121.000,00 IDR 7.260,00
0,006 Person Head of Handyman IDR 132.000,00 IDR 792,00
0,003 Person Foreman IDR 154.000,00 IDR 462,00
Total (2) IDR 13.794,00
Total (1) + (2) IDR 55.194,00
For planning alternative, planning minimizing piling will be done because the procurement of pile has a relatively high cost in piling. With the structure of one floor and the area of this building which does not have the possibility of earthquake, it is expected that this value engineering calculation obtains footing volume decreasing which is quite big so that it can reduce the cost for footing.
WF Truss Leg 200x100x5.5x8 Volume = Length x WF Steel 200x100x5.5x8 = 13.953,94 Kg
The analysis of the unit price is then timed with the volume of Truss Leg WF200x100x5.5x8 (13.953,94 Kg) so that its unit price analysis is changed to be like the table below and the values in the material column can be used as Cost Value of the work:
Table 10 - Unit Price Analysis of WF200x100x5.5x8 (13.953,94 Kg)
Coef Unit Material Unit Price Total
16047,03 Kg WF Steel IDR 36.000,00 IDR 577.693.116,00
Total (1) IDR 577.693.116,00
837,236 Person Workers IDR 88.000,00 IDR 73.676.803,20
837,236 Person Welder IDR 121.000,00 IDR 101.305.604,40
83,72364 Person Head of Handyman IDR 132.000,00 IDR 11.051.520,48
41,86182 Person Foreman IDR 154.000,00 IDR 6.446.720,28
Total (2) IDR 192.480.648,36
Total (1) + (2) IDR 770.173.764,36
On the other hand, to obtain Worth Value from the work, it only should be assumed by using, material unit price analysis which can substitute it which is steel WF 175x90x5x8 with the same calculation as in the table below:
Volume = Length x Steel WF 175x90x5x8 = 11.846,45 Kg
Tabel 11 - Unit Price Analysis of WF 175x90x5x8 (per 1 kg)
Coef Unit Material Unit Price Total
13623,42 Kg WF Steel IDR 36.000,00 IDR 490.443.030,00
Total (1) IDR 490.443.030,00
710,787 Person Workers IDR 88.000,00 IDR 62.549.256,00
710,787 Person Welder IDR 121.000,00 IDR 86.005.227,00
71,0787 Person Head of Handyman IDR 132.000,00 IDR 9.382.388,40
35,53935 Person Foreman IDR 154.000,00 IDR 5.473.059,90
Total (2) IDR 163.409.931,30
Total (1) + (2) IDR 653.852.961,30
From the table above, comparion of Cost Value and Worth Value are obtained for concrete work which can be seen in tabe 12.
Table 12 - Function Analysis of WF Steel Work (Basic Function: Hold Loading)
No Component Verb Noun (P/S) Cost Worth
a b c D e f G
1 WF Steel Holding Load P IDR 577.693.116,00 IDR 490.443.030,00
n/n IDR 577.693.116,00 IDR 490.443.030,00
1,178
Detail: P = Primary, S = Secondary.
Comparison of Cost / Worth ratio = 1,178 > 1, then there is a cost that is not needed. Speculation /Creative Phase. After determining the working items that will have value engineering (roofing and footing working item), the next phase is speculative / creative phase. In this phase, structure re-planning is done especially for footing and roofing of steel WF. For structure planning, engineering mechanical calculation is done by the help of civil
engineering working tool (StaadPro); afrer doing it, footing planning is done. For steel WF roofing planning, civil engineering helping tool (StaadPro) is done. For loading and structure planning calculation itself, it can be seen on appendices; the loading in this planning ignores earthquake loading because the development site in Kalimantan Island does not have earthquake, so that this value engineering is able to obtain an efficient and a safe planning. Below is the footing and the roofing structure planning.
Table 13 - Footing Design Alternative
No Working Items Dimension
Initial VE
1 Pile Procurement 25 x 25 Removed
2 Piling 25 x 25 Removed
3 Rebated Concrete 0,05 0,05
4 P1 Pile Cap 65x65x30 80x80x30
5 P2 Pile Cap 155x65x30 155x80x30
From the table above, it can be knoen that the footing design alternative of value engineering, for pile cap working item (P1 & P2) and piling for Pile cap (P1 & P2), it has pile cap dimension change in which the initial dimension of P1 is 65x65x30, but after doing value engineering, the dimension value of P1 becomes 80x80x30. Then, the initial dimension of P2 Pile cap is 155x65x30 becomes bigger which is 155x80x30 after value engineering. Although it obtains a bigger resut from P1 and P2 pile cap dimension, but the work of pile procurement and piling are removed. It is because on the value engineering structure calculation, Pile cap (P1 & P2) is able to hold construction on it without being supported by pile, but Pile cap dimension (P1 & P2) is maximized. After getting the footing structure value engineering calculation, then roofing steel WF calculation is done. For steel WF planning calculation itself is done by the help of Civil Engineering working program (StaadPro) in which its result can be seen in the table below.
Table 14 - Roof Design Alternative of WF Steel
No Working Items Dimension
Initial VE
1 WF Column 200x100x5.5x8 175x90x5x8
2 WF Truss Leg 200x100x5.5x8 175x90x5x8
3 WF Hemisphere 200x100x5.5x8 175x90x5x8
From the table above, it can be seen that for the initial roofing structure dimension of WF Steel is 200x100x5.5x8, the after value engineering, the stee WF dimension becomes 175x90x5x8. From the data, it can be concluded that there is a cost or a budget saving for steel WF roofing.
Analysis Phase. In this analysis phase, structure cost budget will have value engineering in which it will be analyzed further. The design cost of footing and roofing is discussed further. In this case, material unit price and workers attempt are determined based on or according to the analysis of material unit price list and workers' minimum wages in Human Settlements Office of Kutai Kartanegara Regency. For more details, it can be seen in the table below.
Table 15 - Analysis of Footing Cost
No Working Items Dimension After VE Total Volume Unit Price Total
1 Pile Procurement 0 0 0 IDR 346.830,00 IDR -
2 Piling 0 0 0 IDR 152.136,00 IDR -
3 P1 Pile cap 80x80x30 81,00 15,552 IDR 939.899,80 IDR 107.929.321,71
4 P2 Pile cap 155x80x30 104,00 38,688 IDR 6.035.677,96 IDR 233.508.309,03
Cost Grand Total IDR 341.437.630,74
From the table shown above, it can be seen the budget needs of footing especially for Pile Cap (P1 & P2) with Pile cap dimension (P1 & P2) is maximized and the budgets for pile procurement and piling are removed which finally obtains the budget of IDR 341.437.630,74. After getting cost budget for footing after value engineering, then the similar calculation is done for roofing in which its result can be seen in the table below.
Table 16 - Cost Analysis of Roofing
No Working Items Dimension After VE Length Volume Unit Price Total
1 WF Column 175x90x5x8 56,00 1013,60 IDR 55.194,00 IDR 55.944.638,40
2 WF Truss Leg 175x90x5x8 654,50 11846,45 IDR 55.194,00 IDR 653.852.961,30
3 WF Hemisphere 175x90x5x8 42,00 760,20 IDR 55.194,00 IDR 41.958.478,80
TOTAL COST IDR 751.756.078,50
From the table above, it can be known that the cost budget for roofing especially for the work of WF Column, WF truss leg, and WF Hemisphere is IDR 751.756.078,50.
Development Phase. In this phase, the alternatives selected from analysis phase, cost calculation, and comparison of alternative design cost and project initial design.
Implementation Phase. The final phase of Value Engineering method is implementation phase which means making a recommendation as listed in the table below.
Table 17 - Comparison of Footing Structure Cost
No Working items Dimension Volume Unit Price Total
Initial VE Initial VE Initial VE
1 Pile Procurement 25x25 - 2312,00 0,00 IDR 346.830,00 IDR 801.870.960,00 IDR -
2 Piling 25x25 - 2312,00 0,00 IDR 152.136,00 IDR 351.738.432,00 IDR -
3 Rebated Concrete 0,05 0,05 6,95 6,95 IDR 1.416.227,35 IDR 9.842.957,14 IDR 9.842.957,14
4 P1 Pile Cap 65x65x30 80x80x30 10,27 15,55 IDR 6.939.899,80 IDR 71.250.216,29 IDR 107.929.321,71
5 P2 Pile Cap 155x65x30 155x80x30 31,43 38,69 IDR 6.035.677,96 IDR 189.725.501,08 IDR 233.508.309,03
Total IDR 1.424.428.066,51 IDR 351.280.587,88
Saving IDR 1.073.147.478,63
Percentage (%) 75,339
Table 18 - Cost Comparison of Roofing Structure
No Working Items Dimension Volume Unit Price Total
Initial VE Initial VE Initial VE
1 WF Column 200x100x5.5x8 175x90x5x8 1193,92 1013,60 IDR 55.194,00 IDR 65.897.220,48 IDR 55.944.638,40
2 WF Truss Leg 200x100x5 200x100x5.5x8 175x90x5x8 13953,94 11846,45 IDR 55.194,00 IDR 770.173.764,36 IDR 653.852.961,30
3 WF Hemisphere 200x100x5.5x8 200x100x5.5x8 175x90x5x8 895,44 760,20 IDR 55.194,00 IDR 49.422.915,36 IDR 41.958.478,80
Total IDR 885.493.900,20 IDR 751.756.078,50
Saving IDR 133.737.821,70
Percentage (%) 15,103
Table 18 - Recommendation Form of Footing
Project: Market Development on Yos Sudarso Street
Site: Yos Sudarso Street in Anggana District, Kutai Kartanegara Regency, East Kalimantan.
Working Item: Footing Structure_
Initial Planning: P1 Pile Cap Dimension 65x65x30 ; P2 155x65x30, with combination of pile dimension 25 x 25 Recommendation: Dimension of P1 Pile Cap 80x80x30 P2 155x80x30, with piling is removed because by maximizing dimension of Pile Cap (P1 & P2), the supporting force fulfills without the combination of pile. Reasons:
- There is cost and time saving
- Quality / strength to hold same loading Initial Cost: IDR 1.424.428.066,51 Recommendation Cost: IDR 351.280.587,88 Saving: IDR 1.073.147.478,63
Saving percentage occurring is 75,339%_
Source: Calculation Results.
Table 19 - Recommendation Form of Roofing
Project: Market Development on Yos Sudarso Street
Site: Yos Sudarso Street in Anggana District, Kutai Kartanegara Regency, East Kalimantan.
Working Item: Roof Structure_
Initial Planning: WF Steel 200x100x5.5x8 Recommendation: WF Steel 175x90x5x8 Reasons:
- There is cost and time saving
- Quality / strength to hold same loading Initial Cost: IDR 885.493.900,20 Recommendation Cost: IDR 751.756.078,50 Saving: Rp 133.737.821,70
Saving percentage occurring is 15,133%_
Source: Calculation Result.
From table 17 and 18 above, it is known that the value engineering cost saving for footing is of IDR 1.073.147.478,63 or of 75,339% from the cost of footing working item before value engineering which is of IDR 1.424.428.066,51. Then, the cost saving for roofing is IDR 133.737.821,70 or of 15,103% from roofing working item before value engineering which is of IDR 885.493.900,20. After knowing the working items that can get value engineering which at the end can save cost for every working item, then the researcher makes a recommendation for all parties who involve in the project of Market Deveopment on Yos Sudarso Street in Anggana District, Kutai Kartanegara Regency, East Kalimantan.
CONCLUSION
Based on the result of initial calculation and after value engineering, the comparison of initial design cost which is IDR 1.424.428.066,51 and the cost of value engineering analysis result which is IDR 351.280.587,88 is obtained. It means that by implementing the value engineering, it can save IDR 1.073.147.478,63 with saving percentage of 75,339%.
Based on the result of initial calculation and after value engineering, the comparison of initial design cost which is IDR 885.493.900,20 and the cost of value engineering analysis result which is IDR 751.756.078,50 is obtained. It means that by implementing the value engineering, it can save IDR 133.737.821,70 with saving percentage of 15,133%.
REFERENCES
1. Afandi, A. A. (2010). Optimasi Pemanfaatan Jalan Margonda Raya Depok dengan Metode Value Engineering. Fakultas Teknik Universitas Indonesia. Application Of Value Engineering Building Project (A Case Study Of Hotel Grand Banjarmasin).
2. Azis, S. 2016. Application of Value Engineering on the Construction of Tertiary Irrigation Channel, Research Journal of Applied Sciences, 1(1), 1328-1333.
3. Brinkkemper, S. (1996). Method engineering: engineering of information systems development methods and tools. Information and software technology, 38(4), 275-280.
4. Dell'Isola, A. (1997). Value engineering. Practical Applications... for Design, Construction, Maintenance & Operations. RS Means Company Inc. Kingston MA.
5. Ibusuki, U., & Kaminski, P. C. (2007). Product development process with focus on value engineering and target-costing: A case study in an automotive company. International Journal of Production Economics, 105(2), 459-474.
6. Kelly, J., & Male, S. (2003). Value management in design and construction. Routledge.
7. Miles, L. D. (2015). Techniques of value analysis and engineering. Miles Value Foundation.
8. Paraoulaki, P. E. (2000). Value engineering and its application to the construction industry (Doctoral dissertation, Massachusetts Institute of Technology).
9. Younker, D. (2003). Value engineering: analysis and methodology (Vol. 30). CRC Press.
