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Inersia : Jurnal Teknik Sipil dan Arsitektur

inersia
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Published by Universitas Negeri Yogyakarta

ISSN : 0216762X EISSN : 2528388X DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

INERSIA is stand for INformasi dan Ekspose hasil Riset Teknik SIpil dan Arsitektur. This scientific journal is managed by the Department of Civil Engineering and Planning Education, Faculty of Engineering, Yogyakarta State University, in cooperation with the Persatuan Insinyur Indonesia (PII). It publishes and disseminates research results from lecturers and post graduate students from various universities in Indonesia, which has contributed to the development of science and technology, especially in the field of Civil Engineering and Architecture. INERSIA is published twice a year, in May and December.

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Articles 312 Documents

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PENGARUH GENANGAN AIR TERHADAP PENGECORAN BETON IN-SITU Aminullah Aminullah
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 14, No 2 (2018): Desember
Publisher : Universitas Negeri Yogyakarta

ABSTRACTHigh rainfall intensity maybe occur during the dry season. This can certainly disturb the erection of a building project, especially in a case of construction works requiring dry condition, such in concrete item. Various attempts have been made to reduce the height of the puddle, when mixing the fresh concrete in a frame work of sub-structure elements, e.g. the foot-plate foundation. The puddles in the foundry area potentially affect the composition of the mortar especially in water-cement ratio (wcr). This caused a decrease of compressive strength (f’c) of the concrete then causing the quality decreaseof the concrete. This research used two types of mixed concreteconditions: dry and waterlogged condition. The water cement ratioshould be changed when mixing concrete had been performed in waterlogged condition. One determinedcontrol sample was based on a normal concrete mixture with characteristic strength (f'c) = 25 MPa. The standard of concrete mixing used is SNI-2834-2000 on the mixingprocedure of a normal concrete mixed design. The concrete sampleswere tested using a concrete compressor universal test machine (UTM) than comparedto hammer and Ultra Pulse Velocity (UPV) test.Based on the results of the study, the quality of mixed concrete in waterlogged conditions was much lower than the compressive strength design. The percentage reduction in compressed strength of mixed concrete under water submerged conditions ranged from 30.82% to 32.63% to normal concrete compressive strength. The higher level of puddlecaused the lower compressive strength of the concrete.There was a match between the measurements of concrete compressive strength using UTM comparedto hammer and UPV tests.The percentage differences in measurement of hammer test to UTM test results were 10.73% and 9.26% to 21.79% by the UPV test. Keywords: concrete, foot plate, mix design, puddle, wcr Intesitas hujan yang cukup tinggi juga dapat terjadi pada musim kemarau. Hal ini tentu dapat mengganggu pelaksanaan suatu pekerjaan bangunan, khususnya pekerjaan konstruksi yang telah disyaratkan untuk dikerjakan dalam kondisi kering. Berbagai macam upaya telah dilakukan untuk mengurangi tinggi genangan air pada saat pengecoran elemen sub-structure, seperti halnya pondasi telapak (foot-plate). Genangan air yang terdapat pada daerah pengecoran berpotensi mempengaruhi komposisi adukan khususnya pada faktor air semen (fas). Hal tersebut dapat mengakibatkan kuat tekan beton (f’c) berkurang sehingga mengakibatkan mutu beton menjadi berkurang. Kajian ini menggunakan dua jenis kondisi pengecoran, yaitu: kondisi kering dan kondisi pada genangan air. Faktor air semen berubah seiring dengan kegiatan pengecoran beton dalam kondisi basah (tergenang air). Satu buah sampel kontrol telah ditentukan berdasarkan adukan beton normal dengan kekuatan karakteristik (f’c) = 25 MPa. Standar pencampuran beton yang digunakan adalah SNI-2834-2000 tentang tata cara pembuatan rencana campuran beton normal. Sampel beton akan diuji dengan alat kuat tekan beton yang dilengkapi dengan dial ekstensometer sehingga dapat diperoleh kurva tegangan-regangan beton berdasarkan variasi fas yang diberikan. Berdasarkan hasil penelitianmaka kualitas beton yang dicor dalam kondisi tergenang air jauh lebih rendah dari nilai kuat tekan beton desain, Persentase penurunan kuat tekan beton yang dicor dalam kondisi terendam air berkisar antara 30,82% sampai dengan 32,63% terhadap kuat tekan beton normal, Semakin tinggi genangan air maka semakin rendah kuat tekan beton, Terdapat kesesuaian antara pengukuran kuat tekan beton menggunakan UTM dengan uji hammer dan UPV, Persentase perbedaan pengukuran uji hammer terhadap hasil uji UTM adalah 10,73% dan 9,26% sampai dengan Kualitas beton yang dicor dalam kondisi tergenang air jauh lebih rendah dari nilai kuat tekan beton desain, Persentase penurunan kuat tekan beton yang dicor dalam kondisi terendam air berkisar antara 30,82% sampai dengan 32,63% terhadap kuat tekan beton normal, Semakin tinggi genangan air maka semakin rendah kuat tekan beton, Terdapat kesesuaian antara pengukuran kuat tekan beton menggunakan UTM dengan uji hammer dan UPV, Persentase perbedaan pengukuran uji hammer terhadap hasil uji UTM adalah 10,73% dan 9,26% sampai dengan21,79% untuk uji UPV.Kata kunci: beton, foot plate, genangan, campuran

KOMPARASI KUALITAS FLOWING CONCRETE DITINJAU DARI TINGGI JATUH PENGECORAN DAN JENIS SEMEN Eko Raharjo, Nuryadin
INformasi dan Ekspose hasil Riset Teknik SIpil dan Arsitektur Vol 2, No 1 (2006): Maret
Publisher : Universitas Negeri Yogyakarta

ABSTRACTPumping method is the most frequently used to transport concrete verticallyin multistory building construction. However, such pumping method is still upagainst many problems: (1) the high performance of concrete requires a highquality of flowing concrete; (2) close-meshed framing causes difficulties indistributing the concrete. This research aims to clarify the influence of foundryfall height and cement type toward compressive strength and water absorptiondifference of flowing concrete.Two type of cements, Portland Cement (PC) and Portland PozzolandCement (PPC), were tested in this experimental research. Variation of foundryfall height is categorized into Oem, 35cm, 70cm, and 100cm. Compressivestrength and water absorption of each variant of flowing concrete was measuredafter reaches age of 90 days; three of test objects represent by one data.The research concludes that: (1) there is a compressive strength differenceof flowing concrete using both PC and PPC as the result of foundry fall height.Maximal compressive strength difference is reached at fall height of 100cm; forPC is 15.36% and PPC is 6.690/0. (2) there is a water absorption difference offlowing concrete as the result of foundry fall height using both PC and PPC.Maximal water absorption difference is reached at fall height of 100cm; for PCis 12.05% and PPC is 32.50%.Keywords: fall height, flowing concrete, compressive strength, water absorption,cement type

PENGARUH BIAYA PRASARANA, SARANA, UTILITAS DAN OVERHEAD TERHADAP BIAYA PRODUKSI UNIT BANGUNAN PADA PERUMAHAN MEWAH DI YOGYAKARTA Vivid Lucha Deanggi; Arief Setiawan Budi Nugroho; Fauzie Siswanto
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 15, No 2 (2019): Desember
Publisher : Universitas Negeri Yogyakarta

ABSTRACTMany factors influence developers to determine proce of a house unit of housing. There are some additional costs must be considered for accomplishing projects which not directly related to the cost of a house units. These costs are needed to provide basic and supporting facilities, utilities and some other project overheads are then borne to prospective customers. This study observed the influence of those costs to the cost of building units of luxury housing in Yogyakarta. The survey was conducted to find the cost components from two luxury housing projects. The data was obtained through interviewing field supervisors and heads of engineering which consisted of the costs for developing public and residental facilities, expensing projects overhead, land acquition and house construction. The results showsed that in average, cost of facilities, infrastructure, utilities and project overhead of both housing affect about 29,9% of the total, it also shows that land acquittion for road construction became the highest influenced cost. Keywords: basic facilities, effect,overhead, supporting facilities, utilities ABSTRAK Banyak faktor mempengaruhi pengembang perumahan dalam menentukan harga tiap unit rumah. Selain biaya dasar unit rumah, terdapat beberapa biaya tambahan yang tidak langsung berhubungan dengan biaya pembangunan unit rumah seperti, biaya bahan, alat dan tenaga kerja namun harus dipersiapkan untuk mendukung pelaksanaannya. Biaya-biaya tersebut seperti biaya untuk pemenuhan keberadaan prasarana, sarana, utilitas dan overhead yang pada umumnya kemudian dibebankan kepada pelanggan yang membeli setiap unit rumah. Studi ini membahas pengaruh keberadaan biaya-biaya tambahan tersebut terhadap biaya produksi unit bangunan pada perumahan mewah di Yogyakarta. Survei dilakukan pada dua perumahan mewah di Yogyakarta. data diperoleh melalui wawancara dengan supervisor lapangan dan kepala teknik yang berupa biaya pengembangan fasilitas umum dan fasilitas sosial perumahan, overhead, pengadaan lahan dan biaya bangunan. Hasil penelitian menunjukkan bahwa secara rata-rata pembiayaan fasilitas, infrastruktur, utilitas dan overhead terhadap biaya unit bangunan pada kedua perumahan berpengaruh sebesar 29,9% dari total biaya yang diperlukan, dimana biaya pengadaan tanah untuk prasarana jalan menyumbangkan kontribusi terbesar dalam pembiaayaan tersebut. Kata kunci: biaya, pengaruh, perumahan, overhead

PAVING STONE BERBAHAN ABU SAMPAH TANAMAN Yusuf Wahyudi
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 3, No 1 (2007): Maret
Publisher : Universitas Negeri Yogyakarta

AbstractThis paper discusses about the advantage of organic disposal ashas an additive on paving stone mixture. The organic disposals such asleaves, wood stick, etc. were taken from garbage tank at the market,living area, and temporary tank. Then they were burnt in to an artificialfurnace at temperature of 28-500°C for about 195 minutes. The mixdesign were 1 portland cement: 3 sand: 3 stone ash: organic ash of0%, 10%, 11%, 12%, 13%, 14% and 15% of cement weight: 0,6 water.The result showed that organic disposal ash ratio was 0.05, and thegradation was observed in zone III. The weight of paving stonecontaining organic disposal ash was smaller than normally paving stone.The more organic disposal ash the lighter weight of paving stone. Thecompressive strength of paving stone containing 12% of plant ash wasthe strongest, it was 119% of the control.Key word: compressive strength, paving stone, organic disposal ash

KAJIAN PENCAHAYAAN CAMPURAN DI RUANG BENGKEL KAYU Isda Wdyani, Sumardjito
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 11, No 1 (2015): Mei
Publisher : Universitas Negeri Yogyakarta

ABSTRACTThis study is aimed to discover the strong lighting at carpentry of Engineering Faculty UNYmainly at between 08.00 A.M.-02.00 P.M. Light is an absolute requirement for men to see theirworld. Natural lighting is the light which uses the direct sunlight. Artificial lighting is all forms oflight that comes from a tool created by humans. Mixed lighting is the fusion between naturallight and artificial lighting. The study was begun by studying the basic theory and standardmixed lighting in the carpentry, then do observation, measurement, drawing, determining thepoint of measurement and data collection Data collection was conducted by measurement usingLuxmeter's between at 08:00, 10:00, 12:00 , 02.00 P.M. The data collected in the measurementof as much as 3 times in the same hour. The findings indicate that the average yield stronglighting in the carpentry meet the standard (200 luv) in the amount of 427.13 lux (sunshine),357.00 lux (rainy weather), and 363.12 lux (cloudy weather). It is known from the study that thestrongest lighting in the carpentry when the weather is bright and the weakest lighting is 427.13lux and in wet weather it is 357.00 lux.Keywords: Carpentry, Illumination. Mixed Lighting

UPAYA MENINGKATKAN KUAT GESER TANAH LEMPUNG DENGAN MEMANFAATKAN LIMBAH PLASTIK Endaryanta, Dian Eksana Wibowo
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 12, No 1 (2016): Mei
Publisher : Universitas Negeri Yogyakarta

ABSTRACTThe objectives of this study was to determine: (1) the effect of the addition of plastic waste ofmineral watercontainers (in some variations and percentages) to qu (the value of unconfined compressive strength) of clay, (2)the effect of the addition of the plastic waste to φ (the shear strength) of clay, (3) the effect of the addition of theplastic waste to c (the adhesiveness) of clay. This study applied anexperiment method. The plastics were cut intothe sizes of 1x1 cm and 1x0,5 cm, then they were mixed in the clay, compacted, and then tested. Theclaysamples were taken from Wates (Jl. Wates km 7) Kulonprogro and Kasongan Bantul at a depth of -0.20 m. Theplastic waste used was the mineral water container (PET plastic). The results showed that the addition of plasticwaste ofmineral water containers: (1) raises the value of qu (unconfined compressive strength) of the clay fromWates with 1% - 2% of plastics and the clay from Kasongan with 1% of plastics (2) raisesthe shear strength φ, ifthe level of plastics was 1% - 3% in the clay from Wates and Kasongan but if only the plastics were cut into smallpieces (c) decreases the adhesion, unless the plastic were in small sizes at the level of 3% (clay from Wates) andif the plastics were in large size (clay from Kasongan).Keywords: clay, plastic waste, unconfined compressive strengthABSTRAKPenelitian ini bertujuan untuk: (1) mengetahui pengaruh penambahan potongan limbah plastik wadah air mineral(pada beberapa variasi dan persentase) terhadap qu (nilai kuat-tekan-bebas) tanah lempung, (2) mengetahuipengaruh penambahan potongan limbah plastik terhadap φ (sudut kuat geser) tanah lempung, (3) mengetahuipengaruh penambahan potongan limbah plastik terhadap c (lekatan) tanah lempung.Penelitian ini menggunakanmetode Eksperimen. Limbah plastik dipotongukuran 1x1 (cm) dan 1x 0,5 (cm) kemudian dicampurkan pada tanahlempung, dipadatkan, lalu diuji kuat tekan bebasnya. Sampel lempung diambil dari Wates (Jl. Wates km 7)Kulonprogo dan Kasongan Bantul pada elevasi -0,20 m. Limbah Plastik menggunakan bekas wadah air mineral(plastik jenis PET).Hasil penelitian menunjukkan bahwa penambahan potongan limbah plastik ukuran tersebutpada lempung dapat: (1) menaikkan nilai qu (kuat tekan bebas) tanah pada kadar plastik 1%-2% lempung Watesdan kadar plastik 1% pada lempung Kasongan(2) menaikkan sudut-kuat-geser φ jika kadar plastik 1%-3%lempung Wates dan Lempung Kasongan tetapi hanya jika plastiknya dipotong kecil (c) menurunkan lekatan,kecuali jika potongan plastik ukurannya kecil pada kadar plastik 3% (lempung Wates) dan jika potongan plastikukurannya besar (lempung Kasongan).Kata kunci: lempung, limbah plastik, tekan bebas

PENGARUH TEBAL SELIMUT BETON NORMAL PADA LAJU KOROSI BAJA TULANGAN Pramudiyanto Pramudiyanto; A. Triwiyono A. Triwiyono; HRC Priyosulistyo
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 7, No 2 (2011): Desember
Publisher : Universitas Negeri Yogyakarta

Corrosion of steel reinforcement is the main cause of deterioration andpreliminary failure of reinforced concrete construction. The effect is the large amountof funding to repair, restore and replace the broken part. The aim of this research isto figure out the corrosion process on the reinforcement of concrete construction withlocal aggregate in the salt water environment. The specific aim is to find out thecorrosion rate of steel reinforcement having concrete compression strength between25 MPa to 30 MPa.The DC Electrochemical Test Method with impressed current technique was used inthis research. The test is using cylinder with various diameter. The reinforcementsteel is placed in the center of cylinder cross section to make a condition of differentcover thickness. The test was conducted 45 days non-stop, observing specimen’spotential change and crack pattern. The corrosion rate and corrosion current density(Icorr) were compute using weight loss of steel. The carbonation test using bufferphenolphthalein was also conducted in this research.The result shows that there’re a downstream trend of corrosion rate and corrosioncurrent density to the concrete cover’s thickness. The corrosion rate of ∅1.25”, ∅3”,∅5” and ∅6” specimens as follow: 4.440981 mm/yr, 1.63395 mm/yr, 0.026253mm/yr and 0.00 mm/yr. The corrosion current density (Icorr) of ∅1.25”, ∅3”, ∅5” and∅6” specimens as follow: 0.000382446 mA/cm2, 0.000141 mA/cm2, 2.2x10-6 mA/cm2and 0.00 mA/cm2.The potential change’s profile will goes down according to the timeof test. The graph of potential change to the time forming a curved line until a timewhen the line becomes straight. The crack pattern started from the region betweenthe submerge and the dry region, then move to the entire part of specimen. Thecarbonation was dominated by corroded specimen.Keyword: corrosion of concrete reinforcement, concrete cover thickness,carbonation, impressed current technique

Konfigurasi Batang Pada Perancangan Rangka Atap Bambu Wisnu Rachmad Prihadi; Galeh Nur Indriatno Putra Pratama
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 12, No 2 (2016): Desember
Publisher : Universitas Negeri Yogyakarta

ABSTRACT This study discusses the system design roof truss on a wide span which spans 15 m using bamboo materials, it is deemed necessary because of the material bamboo is a material that is readily available and can be used as themporary shelter as a temporary shelter disaster victims, therefore it needs to be done a review of some particular configuration rod placement diagonal rods. The purpose of the configuration of the rod is to obtain an optimal and efficient structure and implement connection system Moriscos on bamboo construction. On the pedestal roof frame is at the point of the column, so that in this condition is considered the foundation of the joints with horizontal movement of the pedestal reason restrained by anchor bolts and added restrained also by friction contact area of the pedestal. In this modeling study using bamboo material strap (Gigantochloa lear kurz) diameter of 6 cm, as a truss, and use the program SAP 2000 version 14 as a tool in calculating the truss. from reviewing several models from the rafters with bamboo material shows that the stiffness criterion for diagonal rod configuration on the model B which show the predicted vertical deflection z direction is small. As for the efficiency criteria in terms of style rod rod press (compression) due to the effect of buckling (buckling), various models have the smallest is the model A. Keywords: bamboo, design, roof truss. ABSTRAK Kajian ini membahas perancangan sistem rangka atap pada bentang yang lebar yaitu bentang 15 m dengan menggunakan material bambu, hal ini dirasa perlu karena material bambu merupakan material yang mudah didapat dan dapat digunakan sebagai themporary shelter sebagai tempat tinggal sementara korban bencana, oleh karena itu perlu dilakukan peninjauan terhadap beberapa konfigurasi penempatan batang khususnya batang diagonal. Tujuan dari konfigurasi batang tersebut adalah untuk mendapatkan struktur yang optimal dan efisien serta menerapkan sistem sambungan morisco pada konstruksi bambu. Pada tumpuan rangka atap berada pada titik kolom, sehingga dalam kondisi ini tumpuan dianggap sendi-sendi dengan alasan pergerakan horizontal tumpuan tertahan oleh angkur baut serta ditambahkan tertahan juga oleh gesekan bidang kontak tumpuan. Kajian permodelan ini menggunakan material bambu tali (gigantochloa apus kurz) berdiameter 6 cm, sebagai bahan rangka batang, dan menggunakan program SAP 2000 versi 14 sebagai alat bantu dalam menghitung struktur rangka batang dari peninjauan beberapa model dari rangka atap dengan material bambu menunjukkan bahwa untuk kriteria kekakuan maka konfigurasi batang diagonal pada model B yang menunjukkan prediksi defleksi vertikal arah z yang kecil. Sedangkan untuk kriteria efisiensi batang ditinjau dari gaya batang tekan (compression) karena pengaruh tekuk (buckling), dari berbagai model dipilih yang terkecil adalah model A. Kata Kunci: bambu, perancangan, rangka atap.

EULER BUCKLING PATTERN Of AXIAL LOAD CHS MEMBER MODELLED IN FRAME ELEMENT AND SHELL ELEMENT SAP2000 VERSION 11,00 UTILIZED Miftahul Iman
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 7, No 1 (2011): Mei
Publisher : Universitas Negeri Yogyakarta

Stabilitas adalah salah satu pertimbangan utama dalam perencanaan struktur gedung. Begitu banyak kegagalan struktur yang diakibatkan oleh persoalan stabilitas, terutama pada komponen struktur yang menerima beban aksial. Berdasarkan teori dan praktek, jenis tumpuan yang berbeda akan memberikan pola tekuk yang berbeda juga. Perbedaan ini akan berakibat kesalahan dalam analisa beban kritis yang dengan sendirinya menjadi tidak akurat lagi. Pertimbangan keakuratan dan ketepatan dalamprediksi beban kritis ini maka telah banyak perangkat lunak dari analisa struktur yang telah dikembangkan, khususnya analisa tekuk dan SAP2000 adalah salah satunya. Penelitian ini berfokus pada kajian numerik yang berdasarkan pada metode elemen hingga dari sebuah batang aksial tekan yang mempertimbangkan kelangsingan untuk mendeskripsikan kegagalan tekuk. Model pengujian diperoleh dari salah satu sampel penelitian oleh Miftah (2010) yang menggunakan galvanized pipesebagai batang tekan yang dimodelkan sebagai circular hollow section , CHS. Selanjutnya dengan bantuan SAP2000 versi 11,00 akan dibuat pendekatan batang tersebut dengan model frame 3D dan model shell 3D dengan menambahkan spherical dome shell pada ujung-ujung model tersebut untuk kemudan dilakukan analisis dengan analisa statik untuk tekuk linear. Akhirnya kedua model tersebut dibandingkan dan kemudian dari keduanya akan dilakukan verifikasi terhadap nilai eksak (Euler analisis) dan hasil uji eksperimen. Hasil penelitian menunjukkan bahwa dengan melakukan penambahan spherical dome pada ujung-ujung cylindrical shell model akan membuat beba n aksial terkosentrasi pada tumpuan dalam hal ini meggunakan tumpuan sederhana sehingga akan memberikan pola tekuk yang serupa dengan model Euler satu dimensi. SAP2000 versi 11 memberikan ketelitian yang sangat tinggi terhadap hasil analitik yaitu 0,028%. Selain itu, dari kombinasi spherical dome-cylindrical shell pada SAP2000 versi 11,00 juga memberikan ketelitian yang cukup baik yaitu -5,47% dan menunjukkan bahwa dengan model ini beban kritis yang dicapai jauh lebih konservatif dibandingkan dengan menggunakan model frame 3D. Penelitian ini juga menjelaskan bahwa modulus elastisitas meberikan pengaruh yang sangat signifikan terhadap kesesuaian nilai numeric dan eksperimental yang secara berturut-turut diberikan sebagai berikut 27,76%;35,37%;72,06%

ANALISIS TEGANGAN DAN MODIFIKASI METODE PENGUJIAN KUAT GESER ANTARA LAPIS BETON LAMA DENGAN BETON BARU Slamet Widodo
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 13, No 2 (2017): Desember
Publisher : Universitas Negeri Yogyakarta

ABSTRACTThis paper presents the results of the stress distribution analysis on various methods of shear strength test to assess the interface strength between the old and new concrete layers. The shear strength test methods that studied were SHRP dual L-shape test, bi-surface shear test, modified guillotine test, modified FIP direct shear test, and push-out test. The stress distribution results were then used as the basis for the evaluation and modification of the test method of shear strength which is expected to be carried out more easily and gives accurate results. The proposed method is hereinafter referred to as a modified bi-surface shear test with 200x200x200 mm test dimension, 50 mm overlay thickness, using 3 (three) steel plate supports with 50 mm, 100 mm, and 50 mm supported, mounted symmetrical with reference to the position of the shear plane. This method was then applied for the test of 15 shear test variants with a total of 45 samples. Experimental test results show that the proposed method gives an acceptable result with coefficient of variations ranging from 1.322% to 3.054%.Keywords: stress distribution, old and new concrete interface, shear strength.ABSTRAKMakalah ini menyajikan hasil analisis distribusi tegangan pada berbagai metode pengujian kuat geser interface antara lapis beton lama dengan beton baru. Metode uji kuat geser yang dikaji adalah SHRP dual L-shape test, bi-surface shear test, modified guillotine test, modified FIP direct shear test, dan push-out test. Distribusi tegangan yang diperoleh selanjutnya digunakan sebagai dasar evaluasi dan modifikasi metode pengujian uji geser yang diharapkan dapat dilaksanakan dengan lebih mudah dan memberikan hasil yang akurat. Usulan metode yang dihasilkan selanjutnya disebut sebagai modified bi-surface shear test dengan dimensi benda uji 200x200x200 mm, tebal lapis overlay 50 mm, menggunakan 3 (tiga) tumpuan plat baja dengan lebar tumpuan 50 mm, 100 mm, dan 50 mm, yang dipasang simetris dengan acuan posisi bidang geser. Metode ini diterapkan pada pengujian 15 varian uji geser dengan total benda uji sebanyak 45 sampel. Hasil uji eksperimen menunjukkan bahwa metode yang diusulkan memberikan hasil yang cukup baik dengan nilai coefficient of variations berkisar antara 1,322% hingga 3,054%.Kata Kunci: distribusi tegangan, interface beton lama dan beton baru, kuat geser.

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