The Swamp Irrigation Area (DIR) of Dadahup District is a former Peat Land Development (PLG) with an area of around 21,226 Ha. The water management system at DIR Dadahup utilizes changes in sea tides as a source of water to the land and drainage to drain water out of the land. However, in its implementation, DIR Dadahup experienced several problems such as flooding during the rainy season and experiencing drought during the dry season. These conditions indicate the need for land management and water management systems to overcome existing problems. The purpose of this study was to optimize the water management system for irrigation by optimizing the functions and benefits of swamp land in Dadahup, Kapuas Regency, Central Kalimantan Province. Optimization of the water system is carried out by modeling using the HEC-RAS program. Flow modeling with HEC-RAS in irrigation canals can be simulated into two scenarios, namely scenarios using gates and scenarios with doors and pumps for the rainy and dry seasons. Based on the results of the modeling analysis that has been carried out, the surface elevation during the dry season is in the range of +0.06 ms/d + 0.77 m, which is below the average land elevation (+0.8 m MSL). experience drought because the water in the canals cannot irrigate the land. The water level during the rainy season is in the range of +0.82 ms/d +1.53 m, which is above the average land elevation. It can be concluded that irrigation canals cannot accommodate the overflow of water that occurs at the planned discharge so that the land is flooded. The scenario model is suitable for the Dadahup DIR land use, namely with the door and pump scenario, the water level elevation for the dry season and the rainy season can reach the target of +1.0 m, then the water level elevation for the rainy season can also reach the target of +0, 7m.

One reinforced beam element that experiences a shear failure is a high beam; a beam that follows a requirement based on SNI-2847-2013 standard that have the proportion of sliding span (l) and the effective height (d) not more than three. The type of collapse in high beams generally is shear failure in which the crack appears from the area around the placement, propagates and reaching the maximum value at the point of loading. Observation of crack patterns and ultimate loads can be done by several methods based on both non-linearity and linearity of materials. Two specimens consisted of one high beam conventional reinforced concrete and one high beam concrete fiber with a dimension of 170 mm x 420 mm x 850 mm were prepared. Fiber from machine turning waste was used as coarse aggregate substitution with 100% composition in fiber concrete. Both specimens were tested in the laboratory and observed for crack patterns analysis and ultimate load achievement. The experimental test results were then compared with the numerical test results for the non-linearity properties of the material and the Strut and Tie method for the linearity properties of the material. The ultimate high beam of conventional reinforced concrete when experiencing shear failure in the experimental method, numeric method, and strut and tie method were 310 KN, 290 KN, and 236.917 KN respectively,  whereas in the high beam fiber concrete, the ultimate load in the experimental method, numeric method, and in the strut and tie method were 280 KN, 260 KN, and 263,917 KN respectively. The biggest ratio of test results were obtained from the comparison between the numerical and the experimental methods in conventional concrete which was equal to 0.94. This showed the similarity of non-linearity properties of the material to produce adjacent test results.

ABSTRAKSeiring dengan bertambahnya usia bangunan maka ada penurunan dari kapasitas struktur sehingga dimungkinkan lendutan dan retak pada komponen struktur bertambah besar. Begitu pula permasalahan lendutan pelat lantai yang terjadi pada gedung Rektorat Universitas Islam "45" Bekasi menyebabkan pengguna bangunan menjadi tidak nyaman. Agar besar lendutan yang terjadi tidak bertambah parah maka perlu adanya solusi perbaikan. Pemecahan permasalahan yang terjadi dilakukan melalui survei lapangan untuk mengetahui besarnya lendutan yang terjadi, melakukan analisis kekuatan pelat dalam menahan beban dengan program SAP2000 berdasarkan peraturan SNI 03-2847-2002 dan menghitung perkuatan struktur lentur yang diperlukan oleh pelat dan balok berdasarkan metode LRFD yang berpedoman pada peraturan SNI 03-1729-2002. Hasil perhitungan terdapat 5 lokasi pelat yang mengalami penurunan dengan besar masingmasing pelat yaitu 5,3 cm; 6,8 cm; 8 cm; 6,9 cm dan 10,9 cm. Kemudian besar beban maksimal yang masih dapat bekerja untuk pelat II yaitu 350 kg, untuk pelat IV yaitu 300 kg, untuk pelat V yaitu < 240 kg. Jenis dan dimensi perkuatan yang digunakan pada pelat adalah profil baja WF 125 x 60 BJ 37, sedangkan pada balok yaitu profil baja WF 150 x 150 BJ 37. University "45" Bekasi causes discomfort to the building users. In order for the deflection does not get worse the need for repair solutions is a must. Problem solving is done through a field survey to determine the size of the deflection, analyze the strength of the plate in holding the load by using SAP2000 program based on the SNI 03-2847-2002 regulation and calculate the reinforcement of the bending structure required by the plate and beam based on the LRFD method based on the regulations SNI 03-1729-2002. Based on calculation results, there are 5 plate location that decreasing its structural capacity with each size of the plate are 5.3 cm; 6.8 cm; 8 cm; 6.9 cm and 10.9 cm. The maximum load that can still work for plate II is 350 kg, for plate IV is 300 kg, for plate V is <240 kg. Type and dimensions of a reinforcement used on the plate is a WF 125 x 60 BJ 37 steel profile, while on the beam is WF 150 x 150 BJ 37 steel profile. ABSTRACT Along with the age of a building increased then there is a decrease in the structure capacity so that deflection and crack on a structural components became larger. So does the floor plates deflection problem that occured in the Rectorate building of Islamic

Concrete Beams can experience a sudden collapse when overload because of its brittle characteristic. The use of Carbon Fiber Reinforced Polymer (CFRP) on concrete beams externally as external confinement is predicted to improve concrete mechanics properties, increase the ductility and capacity of concrete, and the flexural strength of concrete beams. An experimental study on the reinforcement of concrete beams with Carbon Fiber Reinforced Polymer (CFRP) was carried out to estimate the effectiveness of CFRP on concrete structures as a concrete beam flexural reinforcement material. Two types of concrete beams are provided in this study to test the flexural strengthening effect of the externally bound CFRP composite. First type of concrete beam used for testing is a normal concrete beams, whereas the second tested beam, the CFRP was laminated by coating the beams with Fiber. The dimensions of both types are 15cm x15cm with a length of 55cm footing range. Testing result obtained the compressive strength was 23,29 MPa, flexural strength of normal and CRFP concretes were 33,41 Kg/cm2 and 48,07 Kg/cm2 respectively. It was concluded that the use of CRFP at the concrete beam increases flexural strength up to 44% with the ratio of 143 %.

Ketersediaan petak parkir di Universitas Islam 45 Bekasi pada saat ini tidaksebanding dengan bertambahnya jumlah mahasiswa yang membawa motor karenaketerbatasan luas lahan parkir yang tersedia, salah satu alternatif pemecahannya adalahdengan membangun gedung parkir.Perencanaan gedung parkir ini dianalisis dengan metode analisa statik ekuivalen.Hasil dari analisis berupa aksial, momen, geser. Analisis beban dorong statik pada strukturgedung, dengan menggunakan cara analisis statik 2 dimensi, linier dan non linier, dimanapengaruh gempa rencana terhadap struktur gedung dianggap sebagai beban-beban statikyang menangkap pada pusat massa masing-masing lantai, yang nilainya ditingkatkan secaraberangsur angsur sampai melampaui pembebanan yang menyebabkan terjadinya pelelehan(sendi plastis) pertama di dalam struktur gedung, kemudian dengan peningkatan bebanlebih lanjut mengalami perubahan bentuk elastis plastis yang besar sampai mencapaikondisi di ambang keruntuhan. Kemudian menentukan pemilihan dimensi balok portalutama pada portal dan balok anak terhadap momen pada balok portal akibat gaya-gayayang bekerja pada struktur gedung parkir tersebut.Berdasarkan hasil penelitian tersebut dapat disimpulkan: (1) Lantai 1, 2 dan 3dibutuhkan balok anak sebanyak 60 x 3 batang menggunakan profil WF 250 x 125 x 6 x 9,elemen portal balok WF 300 x 300 x 10 x 15 sebanyak 56 x 3 batang, WF 500 x 200 x 10 x 16sebanyak 30 x 3 batang dan WF 200 x 200 x 8 x 12 sebanyak 8 x 3 batang, dan kolom WF400 x 400 x 13 x 21 sebanyak 55 x 3 batang. (2) Lantai 4 (empat) dibutuhkan kolom WF 350x 350 x 12 x19 sebanyak 22 batang. Profil aman terhadap momen, geser, dan defleksi.