Media Ilmiah Teknik Sipil

Analisis Perkuatan Kolom Lingkaran Pada Bangunan Soft-Story Menggunakan Steel Jacketing Dengan Pendekatan 2D

2024-07-12T03:51:41+00:00

Collapse due to soft-story is often encountered in Indonesia. The collapse mechanism caused by soft stories is very dangerous, causing severe damage even collapse to the building structure. Steel jacketing is one of the means to strengthen the column which is considered effective in increasing the strength and stiffness of the reinforced elements hence soft story collapse in buildings can be prevented. The aim of this research is to evaluate the behavior of the existing building structure before strengthening the columns using limit analysis and pushover analysis and to determine the effect of strengthening columns with steel jacketing on the behavior and the performance of the structure. In this research, the existing structure is simulated to experience design errors and is modeled as a 2D portal with the function of a 4-story school building. From the results of the limit analysis, the existing structural model has the potential to experience a local collapse mechanism, followed by the potential for soft story collapse on the 1st floor. From the results of the pushover analysis, the existing structural model experiences the soft story mechanism and does not show performance points as required by FEMA 440. After carrying out this strengthening the column with steel jacketing, the structural model shows a better failure mechanism and the element performance obtained after strengthening is in the Immediate Occupancy (IO) range

Analisis Kelayakan Tanah Dasar Sebagai Subgrade Jalan Ditinjau Dari Kualitas Daya Dukung Tanah (Studi Kasus Ruas Jalan Anggrek Kota Kupang)

2024-07-04T03:42:25+00:00

An area's function changes as a result of development, which is followed by an increase in vehicle traffic but not enough road capacity. This causes the road to break down quickly because the carrying capacity of the soil isn't strong enough to handle the volume of vehicles crossing it. The road construction will quickly suffer damage if the subgrade has a low carrying capacity. The current damage to the Anggrek road makes driving uncomfortable from a visual perspective. The road section was damaged, according to field observations, with crocodile skin cracks, longitudinal cracks, subsidence, furrows, and potholes. Based on laboratory tests, the purpose of this study was to examine the damage to the Anggrek road caused by the quality of the soil's carrying capacity. The quantitative analysis and interpretation of the soil test result data is the research method. The analysis reveals that the subgrade soil on the Anggrek road in Kupang City is of the fine-grained organic clay type and has moderate to high plasticity. It is also easily influenced by water and the season or weather, so the water content can easily rise or fall. It is also easy to change the volume of soil content depending on the water content. The CBR value of the soil is low, and it does not meet the requirements outlined in the BM Specifications 2018 Rev 2 of 2020. The assessment

Pengaruh Penggunaan Limbah Beton Sebagai (Agregat Halus) Terhadap Uji Kuat Tekan Paving Block

2024-07-04T05:32:35+00:00

In Indonesia, the use of construction waste is usually not utilized properly most are simply dumped in open fields, and some are used as backfill material. The availability of such materials is vast. The purpose of this research is to determine the compressive strength value of paving blocks that utilize concrete waste with variations in the use of concrete waste, namely: 0%, 10%, 20, 30%, and the value of water absorption in paving blocks that utilize concrete waste with variations in the use of concrete waste, namely: 0%, 10%, 20, 30%. The test results showed that at 28 days of soaking, the compressive strength of normal paving blocks was 16.15 MPa, at 10% substitution of concrete waste for stone ash was 29.17 MPa, at 20% substitution of concrete waste to stone ash amounted to 39.32 MPa, and at 30% substitution of concrete waste to stone ash amounted to 22.66 MPa. From the results of the absorption test, it was found that the absorption value of normal paving blocks was 3.88%, at 10% substitution of concrete waste was 2.30%, at 20% substitution of concrete waste for stone ash was 1.89%, and at 30% substitution of concrete waste for stone ash was 2.80%.

Analisis Perbandingan Arus Jenuh Pada Pendekat Terlindung Simpang Diponegoro-Pilau-Nenas Dengan Metode MKJI Dan Time Slice

2024-07-25T02:22:18+00:00

Over time the number of vehicles has increased due to improved urban conditions. This affects the emergence of problems in the Palangka Raya urban transportation system, which has an impact on the performance of the road network, especially the performance of signalized intersections. The purpose of this research is to calculate the value of saturation current (S) using the IHCM 1997. In order to analyze the saturation flow and road performance on the Diponegoro - Pilau - Nenas approach, Primary data and Secondary data are required, Primary data includes intersection geometric data and traffic volume in green hours. While secondary data includes location maps and population. In analyzing the comparison of saturated flow refers to the IHCM 1997 and the Time Slice method. The results of the comparison analysis of saturated flow with IHCM 1997 and Time Slice method on each approach A, B, C, and D respectively are 12.64%, 27.52%, 14.94%, and 36.94%. Also obtained the highest DS value using the saturated flow value of IHCM 1997 and Time Slice method is on St. Pilau which is respectively 1.09 included in the level of service F, and 0.93 included in the level of service E, then from the results of this analysis can be known by using the results of the calculation of saturated flow of Time Slice method there is an increase in the value of Level of Service (LOS).

Analisis Respon Hidrologi Dengan Simulasi Hujan Terhadap Perubahan Fungsi Lahan: Studi Kasus Di Situ Cibuntu

2024-07-25T02:20:17+00:00

Changes in land use in Indonesia are often not accompanied by land conservation measures, which causes land to become increasingly degraded, which is characterized by high erosion hazards and low levels of rainwater infiltration. To determine the impact of changes in land function, it is necessary to carry out a hydrological response analysis to determine the land's response to falling rainfall, one of which is using the rain simulator. This research was carried out by providing rain simulations on two land functions, namely on artificial forest land and open land. This research uses several hydrological parameters such as rainfall, infiltration, soil moisture, runoff and sediment yield as a comparison of the response on the two fields. The results of this research show that the change in land function from forest to open land causes changes in the hydrological response, which causes the potential for flooding due to reduced permeable land, resulting in a lot of rain running off

Analisis Dinding Penahan Tanah Tebing Sei Seruyan Desa Pembuang Hulu Kecamatan Hanau

2024-05-14T03:14:39+00:00

River buffers are an important part of a road network system because they have a significant effect if the river collapses or if it does not function properly. Because riverbanks are structures that cross roads and other traffic, the collapse of riverbanks will reduce or withstand traffic and also cause buildings that stand alongside eroded rivers and landslides, which in turn will disrupt the comfort of community traffic and live and disturb economic relations. So it is very important to calculate the structure of the cliff building in Pembuang Hulu Village, Hanau District, so that it does not endanger the road users and community comfort activities. This study uses secondary data collection methods, then calculated in three models of variations in the condition of the retaining wall to obtain stability and structural analysis which can then calculate the value of bolster safety and sliding safety in buildings. Based on the calculation results obtained as follows, the capacity value of the soil behind the building of the retaining wall is qa = qu / 3 = 17.933 t/m^2 where the safety factor = 3.00 is normal qae = qu / 2 = 26,900 t/m^2 where the safety factor = 2.00 earthquake conditions. The value of stability and analysis of the structure of the retaining wall against rolling is Fg = 3.027>1.5, the shear is Fs = 1.587> 25.25 and foundation reinforcement 221.5 and the minimum stress value of qmin = 3.8006 tons/m² and the maximum stress value of qmax = 9.6454 tons/m² . The reinforcement design of the walls and the foundation of the soil retaining building to be safe against landslides is to reinforce 1925 the walls using 2225. guide

Karakteristik dan Kebutuhan Parkir Pada Taman Kopassus Banten

2024-05-14T03:39:10+00:00

The research was conducted at Kopassus Park with the aim of determining Parking Characteristics, including Parking Accumulation, Vehicle Parking Volume, Parking Index, Turn Over, Parking Headway, and Parking Space Requirements. The survey was conducted for a duration of seven days. The data obtained consisted of vehicle entry and exit data for both cars and motorcycles. The research results showed that the maximum parking index for cars on June 18, 2023, was 56%, indicating that the demand for car parking space did not exceed the available parking capacity. Similarly, for motorcycles, the maximum parking index on June 23, 2023, was 28.3%, indicating that the demand for motorcycle parking space did not exceed the available capacity. The minimum headway for cars occurred on June 18, 2023, between 2:00 PM and 3:00 PM, with a value of 3 minutes per vehicle, while the minimum headway for motorcycles occurred on June 18, 2023, between 12:00 PM and 1:00 PM, with a value of 3.75 minutes per vehicle. The largest parking space requirement for cars on June 18, 2023, was 161 square meters, with the parking area for cars at Kopassus Park totaling 569.49 square meters, still able to accommodate vehicles during peak hours. The maximum parking space requirement for motorcycles on June 19, 2023, was 34.5 square meters, with the parking area for motorcycles at Kopassus Park totaling 121.20 square meters.

Analisa Pengaruh Manajemen Material Terhadap Produktivitas Kerja Pada Proyek Konstruksi Gedung Bertingkat Di Kota Palangka Raya

2024-08-14T22:22:59+00:00

Material management plays an important role in the process of implementing construction projects because materials are the largest cost component in the process. Material management is carried out to support timeliness, quantity accuracy, and cost accuracy. One way to achieve timeliness, quality, and cost is by implementing good work productivity. Productivity becomes a measure in considering whether a project is carried out effectively or not. This study aims to determine what factors in material management affect the productivity of construction project work. The method used in this research is quantitative. Data analysis using multiple linear regression tests with the help of the SPSS 23.0 application. The results of this study obtained a multiple linear regression equation Y = (3.684) + 0.025X1 + 0.043X2 - 0.039X3 - 0.013X5 + 0.031X7. Where the material management factors that affect project work productivity in this study are material procurement planning and scheduling, project organization and personnel, purchasing materials according to planning, storage and warehouse, and control and supervision.

Penggunaan Limbah Abu Batu Sebagai Campuran Pada Agregat Halus Terhadap Kuat Tekan Beton

2024-08-15T03:25:55+00:00

Stone ash is a fine aggregate that passes through sieve no. 4 (diameter 4.75mm) but is retained on sieve no. 200 (0.075mm), thus making stone ash a waste that is useful as a mixture of construction building materials because stone ash can function as a fine aggregate as a substitute for sand in concrete mixtures. The purpose of this research is to find out whether stone ash can be a suitable and good material as a substitute for some of the fine aggregate (sand) in a normal concrete mixture or not, to find out the results of the compressive strength test of concrete by stone ash in a normal concrete mixture, and what percentage composition stone ash which produces optimal concrete compressive strength tests or according to plan. The test object used was a 150 × 300mm cylinder with a total of 36 samples. Stone ash waste with composition ratios of 15%, 25% and 35% has a fairly good bond as an added material to normal concrete mixtures as a substitute for fine aggregate and can even increase the compressive strength of concrete significantly. The composition of stone ash used as a mixture for fine aggregate is 15%, 25% and 35% with a planned concrete quality of 20 MPa and a concrete age of 7, 14 and 28 days. The compressive strength produced by normal concrete without a mixture of stone ash aged 7, 14, and 28 days produces concrete compressive strengths of 13.63 MPa, 19.57 MPa, and 20.53 MPa. Next, for concrete with a rock ash composition of 15% of fine aggregate with an age of 7, 14 and 28 days, the concrete compressive strength is 15.75 MPa, 18.02 MPa, 22.03 MPa. Concrete with a stone ash composition of 25% of fine aggregate with an age of 7.14 and 28 days produces a concrete compressive strength of 15.96 MPa, 19.02 MPa, 21.16 MPa. Concrete with a stone ash composition of 35% of fine aggregate with an age of 7, 14 and 28 days produces a concrete compressive strength of 23.49 MPa, 24.31 MPa, 24.95 MPa. From the research conducted, the 35% composition has the highest compressive strength value of concrete among the other compositions