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All Journal Jurnal Ilmiah Teknik Sipil Jurnal Spektran

Gd. Astawa Diputra

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Author-ID : 235598

Civil Engineering, Building, Construction & Architecture

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APLIKASI LEAN CONSTRUCTION UNTUK MENGIDENTIFIKASI PEMBOROSAN PADA PROSES LOGISTIK PROYEK Sri Sugiantari; I G. A. Adnyana Putera; Gd. Astawa Diputra
JURNAL SPEKTRAN Vol. 3, No. 2, Juli 2015
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Construction logistics process hides some non value added activities which are difficult to avoid, those activities have extended leading time which are not only cause the delay of the project completion, but also spend more production expenses that effect to the profit itself. Data rising by questionnaire is conducted in 22 qualified contractors around Denpasar with 3 respondents in each contractor. Data raising by questionnaire is done in 2 stages, first stage is questionnaire which identify wastes. Second stage are questionnaire which determine waste causes. Field observation is aimed to create a value steam mapping of construction logistic process. It had been found 7 types of wasting which often occurs. They are the field inspection, the purchase of one type material in different suppliers, awaiting the instruction of the owner, the delay of the material transportation, the purpose of approval or additional signature, clarification needs, awaiting the instruction of the superior. Afterwards, the cause of each wasting, namely the workers inspected are less skilled, the bad quality of goods given by the suppliers, the owner procedures which require workers await the instruction before working, material loading-unloading and distribution process is too slow, a complicated bureaucratic system and unclear information. And from the observation, it is obtained that there are some non-added activities occurred throughout the value stream of the construction project logistics, among them awaiting the approval of the supervisors, transportation, awaiting the order process which is still done manually and product defects during the material selection. As a wasting reduction, it is necessary to simplify the process, create a standard operation procedure, provide enough training to the workers so they are more independent, use an information technology to ease the delivery of the report, hold a long-term contracts with the suppliers and the internal customers.

HUBUNGAN ANTARA KARAKTERISTIK BETON MENGGUNAKAN AGREGAT KASAR LIGHTWEIGHT EXPANDED CLAY AGGREGATE (LECA) I Ketut Sudarsana; I Gede Astawa Diputra; Ni Made Dwi Ari Astuti
JURNAL SPEKTRAN Vol 6 No 1 (2018): Vol. 6, No. 1, Januari 2018
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4378.591 KB)

Lightweight concrete is a concrete made of lightweight aggregates and has a volume weight ranging from 1140-1840 kg/m3. This research was conducted to find out the correlation between concrete characteristics using LECA coarse aggregate that proportioned for lightweight concrete mixture according to SNI 03-3449-2002 standard with target compressive strength of 20 MPa, 25 MPa, and 30 MPa. The studied characteristics of the LECA concrete include the value of slump, volume weight, compressive strength, tensile strength, and modulus of elasticity. Each mix proportion was made 8 cylinder specimens of ASTM standard, so there were 24 test specimens for the three studied mixtures. The proportion of concrete mixture obtained for the target strength of 20 MPa is 1: 1.16: 2.46 with the value of cement water ratio (w/c) of 0.6, for the concrete strength of 25 MPa is 1: 0.91: 1.99 with the w/c of 0.52, and for the quality of the strength of 30 MPa is 1: 0.65: 0.94 with the w/c of 0.4. The test results obtained the mixed slump value of 155 mm, 145 mm, and 120 mm for the target concrete strength of 20 MPa, 25 MPa, and 30 MPa, respectively. The volume-weight value of LECA concrete ranges from 1564-1692 kg/m3 so that it is categorized as a lightweight concrete. The concrete compressive strength is 22 to 42% of the target concrete strength, and is categorized as a non-structural concrete. The split test tensile strength is 12 - 18% of its compressive strength. Increasing the value of LECA concrete compressive strength can also increase in its tensile strength and modulus of elasticity. Keywords: lightweight concrete, LECA aggregate, concrete characteristics, compressive strength, tensile strength.

ANALISIS KUALITAS PELAYANAN PAS BANDARA INTERNASIONAL NGURAH RAI DENGAN MENGGUNAKAN MODEL SERVQUAL I Made Suska V; N. Budiartha R. M.; Gd. Astawa Diputra
JURNAL SPEKTRAN Vol 1, No 1, Januari 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Permit to a person to enter the restricted area at Ngurah Rai Airport which is called Airport Pas can be given in accordance with the duties and activities of a person at the airport. On permit service, there are disappointments and complaints of the Pas applicant that can still be found in the Pas service like duration of Pas completion and officer service at the time of application. The different perception and expectation of Pas applicant must remain in the regulation corridors and prioritize security at airports. The purpose of this research is assesing the quality of Pas service in the Airport Authority Region IV by using a SERVQUAL (Service Quality) model. The model is comparing the two main factors, namely real customer perception of the service that they received (Perceived Service) with the actual services expected/desirable (Expected Service) which consists of 5 (five) dimensions, those are Tangibles (physical), Reliability, Responsiveness, Assurance and Empathy (attention). By using these models, it is known that the quality of Pas service in the Airport Authority Region IV is still less than the expectations of the applicant and the most important dimension to enhance is Responsiveness. Gaps between perception and expectation as follows: Responsiveness (-0,2240), Assurance (-0,2171), Reliability (-0,2099), Tangibles (-0,1994), dan Empathy (-0,1373).

PENGENDALIAN WAKTU DAN BIAYA PELAKSANAAN PROYEK PEMBANGUNAN UNIT LAYANAN KANKER TERPADU RSUD BALI MANDARA Gusti Ayu Putu Candra Dharmayanti; Gede Astawa Diputra; Ni Putu Eka Rahayu Damayanthi
Jurnal Ilmiah Teknik Sipil Vol 25 No 2 (2021): Jurnal Ilmiah Teknik Sipil, Vol. 25 No. 2, Juli 2021
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2021.v25.i02.p07

The construction of the Integrated Cancer Service Unit of Mandara Regional Hospital experienced a delay in employment in the 10th week of 1,16%, the 11th week of 2,58%, and the 12th week of 3,77%, so the project control action required to overcome the problem. This study aimed to evaluate the project performance interm of cost and time. In this study used secondary data consisting of, budget plan, project drawings, project progress reports, and time schedule. The implementation budget plan value is calculated based on the unit price analysis and the contractor’s cost budget plan excluding tax and profit (implementation budget plan = Rp 45,917,529,226.76). Earned Value method includes indicators consisting of Actual Cost of Work Perfomanced (ACWP), Budgeted Cost of Work Perfomanced (BCWP), and Budgeted Cost of Work Scheduled (BCWS) are used to determine the parameters that show project performance such as schedule and cost variance, schedule and cost perfomanced index, and can provide the final condition information of the project. The results of the project performance evaluation in Week 12, based on the aspect of the cost, showed the estimated cost for the remaining work (ETC) of Rp 39.646.437.551,40 and estimated costs required until the end of the project (EAC) amounting to Rp 46.270.139.788,49, increasing the project costs of Rp 352.610.561,73. From the time aspect, the project is predicted to finish with time (EAS) 34,74 weeks, while the remaining time to complete the project (ETS) is 22,74 weeks. The time exceeded the planned time of 30 weeks (time schedule), so the predicted project had a delay of 4,74 weeks. Accordingly, rescheduling is conducted for the rest of the activities using Microsoft Project software involving 3 hours overtime per day on 66 work items that are on the critical track, therefore the project can be completed as the planned time.

PERBANDINGAN BILL OF QUANTITY (BOQ) ANTARA DOKUMEN KONTRAK DENGAN HASIL PERHITUNGAN TEKLA STRUCTURES (STUDI KASUS: PROYEK GEDUNG MALL DI PULAU JAWA) Gede Astawa Diputra; Anak Agung Wiranata; Ariel Kharisma
JURNAL SPEKTRAN Vol 11 No 1 (2023)
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRAN.2023.v11.i01.p07

Building Information Modelling (BIM) merupakan teknologi yang dapat menggambarkan gedung seakan-akan gedung tersebut telah dibangun. BIM memberikan dorongan agar pertukaran informasi menjadi lebih cepat dan berdampak pada pelaksanaan konstruksi. Konsep BIM menggabungkan hasil dari beberapa perangkat lunak konvensional pada saat yang bersamaan, ini menunjukkan peningkatan efisiensi perencanaan proyek dan mengurangi kesalahan yang dapat terjadi dalam perhitungan volume secara manual. Penelitian ini bertujuan untuk dapat melakukan permodelan, menghitung volume pekerjaan, dan membandingkan hasil estimasi biaya proyek Tekla Structure dengan metode konvensional yang tertera di dokumen kontrak. Pemodelan 3D dilakukan berdasarkan pada gambar kerja menggunakan software Tekla Structures. Model yang telah dikerjakan kemudian dikembangkan sehingga menghasilkan informasi proyek berupa denah, potongan dan detail. Model 3D tersebut juga dapat menghasilkan data volume pada tiap item pekerjaan. Selanjutnya data voleume tersebut dikalikan dengan harga satuan untuk beton campuan dan besi per kilogramnya. Analisa data dilakukan dengan cara membandingkan biaya RAB kontrak dengan hasil estimasi BIM pada tiap item pekerjaan. Biaya yang dihasilkan menggunakan perbandingan software Tekla Structure memiliki nilai yang lebih kecil dari pada biaya RAB kontrak yaitu diperoleh sebesar 5.49%.

Co-Authors Anak Agung Diah Parami Anak Agung Wiranata Ariel Kharisma Dharmayanti, Gusti Ayu Putu Candra Gde Sukaratha I Gede Putra Pradipta I Gede Trisna Sura Nata I Gusti Agung Adnyana Putera I Ketut Sudarsana I Made Sukada Wenten I Made Suska V I Putu Swihendra I Putu Widyarsana I W. Yansen I Wayan Yansen Ida Ayu Cri Vinantya Laksmi Ida Ayu Rai Widhiawati Mayun Nadiasa N. Martha Jaya Ni Made Dwi Ari Astuti Ni Putu Eka Rahayu Damayanthi Nyoman Budiartha R.M. Putu Tegar Manggala Sri Sugiantari Wayan Yansen

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