JSpTS : Jurnal Spesialis Teknik Sipil

ANALISIS PERBANDINGAN EFISIENSI BIAYA DAN EFEKTIFITAS WAKTU PELAKSANAAN LAPIS PONDASI BAWAH ANTARA AGREGAT KELAS B DAN BETON KURUS

Rina Astuti — 2019-10-01

Debate both technically and economically in the use of road construction used often occurs.
One of them is the lower foundation layer as a working floor and transfer of load from the top
cover layer to the subgrade. The purpose of this study was to obtain the level of technical
effectiveness and the level of cost and time efficiency in the use of thin concrete and aggregate
grade foundation layers from the Mangkurawang-Rapak Lambur road improvement project
in Tenggarong District. Rigid hardening is determined as the closing pavement. Technically
the pavement plan design uses the 1993 AASHTO method while the 2017 binary analysis
method is used to compare costs and time. The results show that for a road improvement
project of 1,151 km with a subgrade CBR of 5%, the lower grade aggregate foundation B is
15 cm thick with a planned budget of Rp. 5,153,245,000.00 while the time required is 49 days.
Meanwhile for thin concrete 10 cm thick. With a budget plan of Rp. 6,147,623,000.00 within
43 days. Means the bottom foundation layer aggregate class B 16.18% more efficient with a
time of 12.24% more efficiency compared to thin concrete.
Keywords: lower foundation layer, thin concrete, AASHTO, binamarga analysis

ANALISIS PERBANDINGAN WAKTU PELAKSANAAN PEMBANGUNAN HARGA DAN ANTARA RUMAH SEDERHANA RUPAK DENGAN RUMAH SEDERHANA KONVENSIONAL TIPE 36

Aulia Sari — 2019-10-09

One of the value engineering innovations in supporting a million housing program from the
Government which is supervised by the Ministry of Public Works and Public Housing on
housing or residential assistance for low-income people, PT Duta Cipta Pakarperkasa which
is engaged in the Steel Industry has issued a simple house product Rupak using the concept of
growing houses with knockable walls made from Expandable Polystrane (foam foam) coated
with steel plates. The purpose of this study was to obtain a comparison of the cost and time of
implementation in building a simple Rupak and conventional type 36 house, namely by using
a descriptive analysis method that was processed to determine the RAB and standards used in
Rupak houses and conventional houses. It turned out to be the result that for a modest house
it needed Rp. 80,898,797.52 while for conventional simple houses Rp. 92,471,372.31. And in
terms of time a simple house needs 16 days whereas a conventional simple house needs 29
days.
Keywords: shapely houses, conventional simple houses, styrofoam, knock down walls

ANALISIS CRASHING TIME MENGGUNAKAN MS-PROJECT DALAM PELAKSANAAN PEKERJAAN PADA PROYEK PENINGKATAN JALAN

Rina Mariani — 2019-10-03

The Sangkulirang-Bontang road improvement project is in the form of delays on the seventh
week of December amounting to 6.21%. The cause of the delay in the execution of work was
the problem of asphalt work and thermoplast road marking equipment. This research is
intended to obtain optimal solutions in order to catch up on project delays. There are two
alternatives that can be assessed, namely the first addition to the time of work
implementation using the amount of equipment available, and the second by increasing the
amount of equipment used. It turned out that the first alternative cost was Rp. 18,349,500.24
with a period of 17 days. The second alternative is the implementation cost of Rp.
36,699,234.86 but with a processing time of 9 days. Because the first alternative is cheaper
with time still permissible, the first alternative is chosen. In order to catch up on work delays,
planning and scheduling are obtained and the acceleration of the duration of the project
completion is 1 day from the initial project planning of 59.0%. And in terms of costs there is
a difference in the contract value of Rp.5,565,986,000.00 with a total cost of work of Rp.
4,647,256,026.19 or Rp. 505,998,154.81 amounting to 0.165%
Keywords: planning and scheduling project, delays, crashing time, road improvement

FAKTOR-FAKTOR YANG BERPENGARUH TERHADAP PERUBAHAN KONTRAK LUMP SUM PRICE MENJADI UNIT RICE

Abdulloh Abdulloh

The work contract for the Surabaya-Gempol toll road relocation project Porong-Gempol
package 2 Porong-Kejapanan has been signed, namely in the form of a lump sum contract.
Due to a request from BPJT to change the design from 2 x 4 lanes to 2 x 6 lanes on the
Surabaya-Gempol toll road relocation project, Porong-Gempol 2 Porong-Kejapanan, the
contractor intends to propose a contract change from a lump sum to a unit price contract.
This study aims to determine and determine the factors that influence changes in the contract.
It turns out that by distributing questionnaires, it can be found that there are five main
variables, namely service users (X1), service providers (X2), third parties (X3), contracts (X4)
and environment (X5) that affect the final outcome of contract change (Y). By using factor
analysis and stepwise regression analysis aided by the SPSS program, it was found that only
the service user variable (X1) and the service provider variable (X2), which significantly
affected the contract change dependent variable (Y). And that influence is expressed by the
relationship Y = -1,171 + 0,268 X1 + 0,529 X2.
Keywords: lump sum contract, unit price contract,Â factor analysis, multiple regression
analysis

NALISIS MANEJEMEN RISIKO PEMBANGUNAN PROYEK JALAN LINTAS BAWAH TANAH BUNDERAN MAYJEN SUNGKONO SURABAYA

Triase Triase — 2019-10-07

The underground road construction project in the satellite roundabout area is a project with
a risk level that is difficult to predict, so an in-depth risk management analysis is needed.
With the approach of the quality, cost and time specs, the dominant risk factors and changes
in costs and time will be sought due to the influence of these risk factors. By using 35
respondents, it turns out that the final results of the analysis show that from the aspect of
quality, the factor of planning changes, material lacking in quality, low productivity of work
tools becomes the dominant risk factor. While from the aspect of time, it turns out that the
failure factor of the team / project management, planning changes, and planning errors are
the dominant risk factors. Meanwhile, in terms of cost aspects of project management factors
and traffic safety, structural excavation, geotextile work, rigid pavement are the dominant
risk factors and from the natural aspect and planning aspects become the dominant source of
risk in terms of time and scope of structure work, general scope of work of in terms of cost. As
a result of these risk factors, it results in changes in costs for structural works of 75 million or
53%, while in public works amounting to 63 million or 11% with changes in time> 30 days.
Keywords: Risk analysis, underpass, risk factors, sources of risk

ANALISIS PERCEPATAN WAKTU PENYELESAIAN PROYEK DENGAN METODE CRASHING DAN FAST TRACKING PADA PELEBARAN JALAN DAN JEMBATAN

Bambang Wijanarko — 2019-10-09

To obtain a better profit without ignoring work safety and quality of work, the acceleration of
the implementation of the work of a construction project can be done using the Crashing and
Fast Track method. The research objective is to determine the amount of cost and time
incurred by the acceleration of implementation and determine the magnitude of the difference
in budget and time spent with the Crashing and Fast Track methods. The Crashing method
uses 2 types of variables, namely the addition of 1 hour, 2 hours and 3 hours overtime, and
the addition of heavy equipment and labor, while the Fast Track method uses 3 times the
overlapping application of work items. It turns out that the most optimal result is the addition
of 2 hours of overtime work for 163 days so there is a reduction in costs of Rp. 156,358,936,
while the Fast Track Method obtained the most efficient results are the results of operations
with a total duration of 130 calendar days, and with a total cost of Rp. 16,812,941,734,38,
while the difference between the total plan and the cost after Fast Track is: Rp.
340,933,265.63. The Fast Track method is cheaper than the Crashing method which uses
overtime hours for 2 hours.

Keywords: acceleration of project time and cost, Crashing method, Fast Track method.