Tinjauan Momen Lentur Pelat Lantai Precast Beton Ringan Menggunakan Bahan Campur Limbah Plastik Dan Pecahan Genteng Diperkuat Tulangan Wiremesh

Floor plates are one of the structural components of construction both in buildings and bridges and are usually constructed with reinforced concrete construction. In general, the manufacture of reinforced concrete slabs is done by casting in place, so it will require more power and time in the process. The precast floor plate itself is the unity of several blocks of concrete plates that can be arranged in such a way that it can make a better quality floor plate. The precast floor plate is also one of the precast concrete results. Materials used in the manufacture of precast floor plates are water, cement, tile shards, HDPE plastic waste (High density polyethyleneI), sand and reinforced with wiremesh reinforcement. The purpose of this study is to create new innovations from precast floor plates in order to be more efficient and practical, both in terms of economy and time of workmanship. Planning of this precast floor plate uses mortar with a fine aggregate ratio and 1: 5 cement, and f.a.s 0.5. Test specimens made in this study as many as 12 pieces of concrete cylinders with a diameter of 15 cm and a height of 30 cm. With details of 3 pieces of concrete cylinders test object without mixed waste material plastic and 9 pieces of concrete cylindrical test object with a mixture of plastic waste material. The precast floor plate is made with the size of 110 cm x 50 cm as many as 12 pieces. With details of 3 pieces of specimens without waste plastic mixtures and 9 pieces of specimens with a mixture of waste plastic materials. This precast floor plate study tests the compressive strength and flexural strength. The result of concrete strength test of concrete cylinder with mixture material of plastic waste 0%, 4%, 6%, 8% obtained result respectively 16,135 MPa, 4,133 MPa, 3,831MPa, 3,416 MPa. The precast floor plates with flexible strength testing with plastic waste mixed materials of 0%, 4%, 6%, 8% obtained respectively 1492604,17 N.mm, 1369375,00 N.mm, 1191979,17 N.mm, 1018125,00 N.mm

Perancangan Generator Induksi 1 Fase 12 Kutub Kecepatan Rendah

Electrical energy is the energy that is essential to life in the country of Indonesia. The number of users resulting power deficit, because it is not offset by the addition of generating capacity. Moreover, Indonesia is a big country, with widely scattered islands. Then the energy distribution of electricity were still not sufficient hinterland. Small-scale power plants to be one alternative. Generator used is an induction generator among other types of multiple generators. Induction generator makes the mechanical energy is converted into electrical energy. Induction generator has a robust design, requiring no carbon brushes, easy maintenance, easy and operator of electricity may emit at different rotational speed. These characteristics make the induction generator to be one alternative small power plants in remote areas. This study about the induction generator 1 phase 12 pole low speed which dikopelkan with an induction motor as the driving and mounted switch controller capacitor bank, then testing the induction generator without load with the excitation capacitor 8 μF and 16 μF with a rotational speed between 525 rpm up to 850 rpm and with excitation 8μF capacitors and 16 μF at 525 putarantara speeds up to 850 rpm. After the test continued penggukuran output voltage, frequency and current, then the fetched data analyzed. Results of the research phase induction generator 1 low speed with capacitor banks 8 μF and 16 μF with a resistive load of 5.10 and 15 Watt. Characteristics of the rotational speed of the V and F when the load increases, namely V and f is decreasing because the generator rotation slowed. Without load capacitor 8 μF speed of 605 rpm is 122 V, 57.5 Hz, with a load of 117 V, 57.5 Hz. Without load 16 μF speed of 605 rpm is 119V, 56.7 Hz, with a load of 117 V, 57.5 Hz, the voltage is reduced to 4.2%. causes the voltage and frequency on the wane as a result of the rotary keceptan increasingly slowing down and also the effect of the increased load makes the generator rotating heavy. To overcome the voltage drop by adding a rotational speed of the generator so that the load can be met

Pemanfaatan Limbah Bongkaran Dinding Pasangan Batu Bata dalam Pembuatan Paving Blok sebagai Pengganti Pasir

Concrete is a mixture of water, coarse aggregate, cement, and fine aggregate. Concrete can also be mixed with other materials according to the behavior to be given. Paving block is one of structural concrete product which has usability as ground cover or floor. With the advance of technology and knowledge, new innovations are done to get paving with good quality and have economic value. In this study the use of sand in the manufacture of paving blocks is replaced by using waste brick wall pairs with a percentage of 0%, 25%, 50%, 75%, 100% of the weight of fine aggregate, which aims to determine whether the impact of the addition of waste discharge wall pair of bricks, and provide an alternative use of such waste. In this study using paving with size 20 x 10 x 6 cm, with the number of test objects 40 pieces. The test was performed after 14 days of paving at the Laboratory of Civil Engineering, Muhammadiyah University of Surakarta. After the tests it can be concluded that the best mixture is obtained in paving without the addition of waste brick wall or normal paving wall because it has the highest average compressive strength following the requirements of SNI 03-0691-1996 which is 12.22 MPa in paving D and has an average water absorption value of 4.10%. In the addition of waste as much as 25% obtained an average compressive strength of 10.83 MPa and the average water absorption of 3.37%, 50% additional pause obtained an average compressive strength of 8.89 MPa and water absorption of 5.78% , then the addition of waste as much as 75% compressive strength of the average maximum of 8.61 MPa with an average water absorption rate of 3.22%, and the last on 100% added waste obtained an average compressive strength of 8.33 MPa and the average water absorption rate of 4.11%

Evaluasi Perbandingan Biaya Dan Metode Pelaksanaan Kontruksi Pada Pekerjaan Peningkatan Jalan Perkerasan Kaku Dengan Perkerasan Lentur Studi Kasus : Overlay Jalan Bade Batangan Tahap III Kecamatan Klego Kabupaten Boyolali

Tugas akhir ini dilakukan untuk penelitian evaluasi antara penggunaan jalan perkerasan kaku yang akan diganti dengan perkerasan lentur pada pembangunan jalan proyek Peningkatan Jalan Bade – Batangan Tahap III, Kecamatan Klego, Kabupaten Boyolali. Penelitian ini akan membandingkan ke dua kontruksi perkerasan dari segi biaya, dan metode pelaksanaan. Aspek biaya merupakan salah satu hal yang mempengaruhi pelaksanaan proyek kontruksi jalan. Oleh sebab itu perlu adanya perencanaan biaya yang baik agar tidak terjadi pemborosan. Perbandingan biaya kontruksi difokuskan pada biaya lapis permukaan dan leveling sepanjang 650 m antara perkerasan kaku dengan perkerasan lentur. Metode penelitian dibagi dalan 3 (tiga) tahap yaitu tahap pertama adalah studi pustaka dan survey awal, tahap kedua adalah pengumpulan data sekunder, dan tahap ketiga adalah analisa hasil dan kesimpulan saran. Hasil analisis biaya masing – masing kontruksi diatas untuk lapis perkerasan kaku sebesar Rp. 908.846.000,00 dan untuk lapis perkerasan lentur sebesar Rp. 920,642,000.00 sudah termasuk PPN 10 %. Dengan kelebihan biaya sebesar Rp. 11.796.000,00 dari biaya perkerasan lentur dengan nilai Rp. 920,642,000.00 hanya dapat menghampar lapis permukaan perkerasan lentur sepanjang 628,08 m. Perbedaan dari segi metode pelaksanaan antara metode perkerasan kaku dan metode perkerasan lentur terdapat perbedaan yang mendasar untuk perkerasan kaku tanpa memerlukan pemadatan sedangkan perkerasan lentur membutuhkan proses pemadatan dengan 3 tahap yaitu pemadatan awal, pemadatan antara, pemadatan akhir. Untuk perkerasan kaku harus melakukan pemasangan bekesting untuk penghamparan material sedangkan perkarsaan lentur tanpa pemasangan bekesting untuk penghamparan material

Prototype Sistem Pemantauan Keamanan Melalui Jaringan Internet Menggunakan Android

Theft crime makes citizens very nervous, especially in urban areas. There are many ways you can do to avoid the crime of theft in the home or office, such as security pertugas hire private security guards to keep watch. Of course this will add to expenses per month. Often we see the incidence of theft of home or office entrance through doors and windows, to track the window can be treated using iron trailis, while for the door track a bit difficult because of the width of the door is too big and is the main access entrance and exit of people. It required an automatic door system and can be monitored remotely using the Android app. In pengaplikasianya the system uses Finggerprint as the door lock which will give access to people who are already registered fingerprints. The system is run by using arduino based applications that will work to open the door with the reading of the fingerprint data has been registered, as well as Android devices that will receive notifications if the door has been opened. Given such a security system homeowners will feel safe as any people can get into the house. With the implementation of these security systems do not require a key user manual or electric locking bermedia remote to conduct open the door. Penerepan fingerprint only limited to the Windows XP operating system

Q-Minder Queue Management Hospital’s Patient with SMS System

Q-Minder is a device that provides queue management in hospital. This device uses SMS (Short Message Service) to remind a turn of a patient in a queue in hospital. The development of this device is based on the sequencial numbers that is input of phone numbers on the device. To input a phone number, we use digital Keypad. After the phone number stored to the device, the user will get the information of queue number. The phone number will be stored into EEPROM (Electrically Erasable Programmable Read-Only Memory) of Arduino Mega 2560. As the brain, Arduino Mega 2560 also decide the queue number of the phone number. In the process, the operator of the device is able to send a SMS reminder of a next person’s turn. To send an SMS to a phone number, we use GSM (Global System For Mobile) module that is attached to Arduino Mega 2560. Overall, we have three main processes in this device. First process is inputting phone number, second process is getting the queue number, and the third process is sending a reminder to phone number

Arsenic Incorporation into Garden Vegetables Irrigated with Contaminated Water

Daily vegetable requirement are mostly fulfilled in Bangladesh through homestead garden production which are usually irrigated with arsenic-rich underground water. Garden vegetables grown in arsenic-tainted soil may uptake and accumulate significant amount of arsenic in their tissue. Mean, minimum and maximum arsenic content in some common garden vegetables, e.g. bean, bitter gourd, bottle gourd, brinjal, chilli, green papaya, mint, okra, palwal, potato, red amaranth, string bean and sweet gourd, from an arsenicprone locality of Bangladesh have been assessed. The contribution of vegetable-arsenic in the daily diet was estimated. Correlation with the groundwater arsenic status and statistical significance of variations has been discussed

Performance Comparison of Various Textile Composition and Structure Through Full-Wave Electromagnetic Simulation and Measurement

This paper presents the performance of microstrip patch antenna integrated with textile as a substrate, designed for wearable application. Comparative study between cotton fabric as a substrate with copper tape as radiating element and FR-4 as a substrate with E-textile as a radiating element is performed to evaluate the performance of antennas. The antennas integrated in the proposed structures operate at resonant frequency of 5 GHz. Parameters such as fabric thickness and dielectric permittivity are determined through laboratory measurement prior to simulation to ensure accurate analysis and to take into account non-ideal conditions. Preliminary analysis is performed to observe and investigate the characteristics and electromagnetic performance of the antennas when different types of textile are used as the substrate. Antenna prototypes with two different compositions has been fabricated and tested for validation. The fabricated prototypes give good return loss performance which is -27dB at 4.3 GHz resonant frequency for prototype 1 and -22 dB at 4.7 GHz for prototype 2 (e-textile). However, the frequency for Prototype 2 (E-textile) is slightly shifted about 30% to the left due to non-ideal conditions of the textile materials. The ability of both antennas to radiate good signal is also measured. Based on the measurement data, Prototype 2 (E-textile) shows better performance with higher received power compare to Prototype 1 (copper tape) which is -43 dBm within 1 meter range, while - 58 dBm for Prototype 1