scholarly journals Desain Embung Berbantu Komputer Di Kali Sabi Kota Tangerang Banten

2021 ◽  
Vol 5 (3) ◽  
pp. 125-136
Author(s):  
Moch Ridwan Widiansyah ◽  
Budi Indra Setiawan
Keyword(s):  
Reinforced Concrete ◽  
Water Resources ◽  
Return Period ◽  
Water Retention ◽  
Storage Capacity ◽  
Construction Materials ◽  
Rainfall Data ◽  
Effective Rainfall ◽  
Flood Discharge ◽  
The City

The problem of flooding in the city of Tangerang is a problem that requires further treatment. Improper management of water resources is one of the factors that cause flooding which results in losses for the community.The activity carried out as an effort to prevent floods is the creation of water retention. The purpose of this research is to know the flood discharge in Kali Sabi, know volume that must be accommodate, determine the capacity for water retention, produce an effective technical water retention design, and obtain an estimated cost of making the water retention. This research was conducted in April-July 2020 in Uwung Jaya Village, Tangerang City using topographic and rainfall data for 12 years. Rain distribution using the Log Pearson III . The results of the analysis revealed that the effective rainfall of the 5-year return period was 66.314 mm with a maximum flood discharge of 83.69 m³. Volume runoff that had to be overcome was 1084.64 m³. The effective storage capacity of the water retention is ± 1975 m³ with an area of ± 525 m², with construction materials, reinforced concrete with K-225 quality and 10 mm diameter reinforcement. Water retention has two steel sliding gates at the inlet and outlet. Construction of the water retention is estimated to cost Rp. 813,839,000.00.

scholarly journals Analisis Pengendalian Puncak Banjir Menggunakan Kolam Retensi di DAS Batang Air Dingin Kota Padang

2020 ◽  
Vol 16 (1) ◽  
pp. 1
Author(s):  
Fajri Ramadhan ◽  
Yola Amelia ◽  
Revalin Herdianto ◽  
Elvi Roza Syofyan
Keyword(s):  
Return Period ◽  
Surface Runoff ◽  
River Discharge ◽  
River Flow ◽  
Storage Capacity ◽  
Large River ◽  
Hydraulic Modelling ◽  
Retention Pond ◽  
Flood Discharge ◽  
Local Residents

Batang Air Dingin Watershed is one of the watersheds in Padang City which is located at 00050’12,5” to 00050’22,5” South Latitude and 100023’35,85” to 100022’42,84” East Longitude has changed its function. Land in the area around the river flow results in greater surface runoff, which has the potential to cause erosion. Runoff that occurs in Batang Air Dingin Watershed area causes the river to shrink during the dry season causing the local residents’ wells to be drought, while in the rainy season the river discharge value used is obtained. Through the calculation of the hydrograps discharge using the HSS Nakayasu and HEC-HMS methods whose values are validated by the field flood discharge. Hydraulic modelling using HEC-RAS software with discharge from HSS Nakayasu method. The retention pond plan is based on the amount of runoff that cannot be accommodated by the original storage capacity of Batang Air Dingin Watershed during 100 year return period was 1212, 94 m3/second with large river storage capacity is 1205,317 m3/second. The debit that can be deducted by making a retention pond is 30,5%.

scholarly journals Increasing Effectiveness of The Urban Artificial Reservoir Trough Cross Section Improvement

2021 ◽  
Vol 945 (1) ◽  
pp. 012046
Author(s):  
Rizka Arbaningrum ◽  
Marelianda Al Dianty ◽  
Frederik Josef Putuhena ◽  
Rifki Priyambodo ◽  
Budianto Ontowirjo
Keyword(s):  
Land Use ◽  
Surface Area ◽  
Cross Section ◽  
Return Period ◽  
Rainfall Data ◽  
Flood Mitigation ◽  
Maximum Rainfall ◽  
Artificial Reservoir ◽  
Flood Discharge ◽  
Main Factor

Abstract Situ Ciledug is an artificial reservoir located at Tangerang Selatan, Indonesia. In 1950 known as one of the largest lakes with total area of 32.806 hectares. As time goes by, due to the construction of housing and land use around the area, the catcahment area was reduced about 19.3 hectares in 2013 and by the end of 2020 the surface area was become 16.2 hectares. Urbanization is the main factor that makes the area of Situ Ciledug’s narrower. The second impact was flooding, as a result, the flood inundates the cities around the reservoir. This study aims to increase the storage capacities by normalizing the reservoir using SWMM 5.1 software. Hydrological analysis was carried out in the first stage to find the maximum rainfall using a 100-year return period. Then result intensity of rainfall used to analyze the hyetograph as input for rainfall data in SWMM 5.1. The modeling uses a maximum of rainfall about 107 mm with a reservoir depth of 1.3 meters. The large inflow that enters the reservoir is 87.504 m3/second aand the volume is 30.145 m3/second. Therefore, it is necessary to normalize the reservoir by increasing the depth of the reservoir by 0.7 meters. Normalization is carried out to accommodate flood discharge as a solution to flood mitigation due to the overflow.

scholarly journals Perbandingan Perkiraan Debit Banjir Rancangan Menggunakan Data Hujan dan Debit di DAS Kaliwadas Kab. Pekalongan, Jawa Tengah

2020 ◽  
pp. 1-8
Author(s):  
S. Samatan
Keyword(s):  
Water Resources ◽  
Damage Control ◽  
Rainfall Data ◽  
Design Flood ◽  
Chi Square ◽  
Average Deviation ◽  
Hydro Power ◽  
Discharge Data ◽  
Central Java ◽  
Flood Discharge

Design flood discharge is one of the important parameters in the management of water resources, especially water resources utilization structures and water damage control structures. This parameter serves to determine the dimensions and capacity of the planned water structures. As an important reference, this design flood discharge must be carefully determined so that the planned building is effective and financially functional and economically efficient. This study aims to determine the design flood discharge using rainfall data which will be recommended as a reference for the design of a micro-hydro power plant building in Kaliwadas River, Pekalongan Regency, Central Java Province. The results of the analysis based on rainfall data are compared with estimates using discharge data to determine deviations resulting from the use of rainfall data. Frequency analysis is applied to both types of rainfall and maximum daily discharge data. Chi-Square and Kolmogorov-Smirnov tests were performed to test four distribution methods: Normal, Normal Log, Pearson Log III and Gumbel. Transformation of design rainfall into design discharge is done using the Snyder Synthetic Unit Hydrograph Method, by first optimizing the hydrograph parameter. The analysis shows that the design flood discharge using rainfall data is relatively lower than using discharge data with an average deviation of more than 15%. This deviation is expected to occur when the transformation of rainfall into discharge is influenced by various very complex parameters, especially changes in land cover and rainfall distribution that have not been fully accommodated. However, for watersheds with very limited discharge data, the use of rain data can be an option for establishing a design flood discharge.

scholarly journals Analysis Of Surface Runoff Potential At Medan Industrial Estate Use SCS Method

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Yudha Hanova
Keyword(s):  
Return Period ◽  
Surface Runoff ◽  
Catchment Area ◽  
Flood Mitigation ◽  
Effective Rainfall ◽  
Flood Discharge ◽  
Industrial Estate ◽  
Runoff Potential ◽  
Alternative Solutions ◽  
Scs Cn

<p><em>Flood disaster at the region Medan Industrial Estate resulted the losses in infrastructure, farming, and residence. </em><em></em></p><p><em>Flood discharge at Medan Industrial Estate are influenced by surface runoff from several catchment area in Medan Industrial Estate. Analysis of potential for surface runoff is expected to provide input and information to find alternative solutions appropriate flood mitigation.</em> <em>Discharge of surface runoff were analyzed using SCS method with the return period of 1, 2 and 5 Years. Rainfall data are obtained BMKG Stations of Maritim Belawan</em>. <em>Effective rainfall calculated using SCS-CN method on condition AMC III (wet conditions). The results of the analysis of the potential for surface runoff maximum for 1 year return period on DAS I, II, III, IV, V, and VI was 17.631 m<sup>3</sup>/s</em><em>, 22.183 m<sup>3</sup>/s, 12.621 m<sup>3</sup>/s, 11.338 m<sup>3</sup>/s, 18.224 m<sup>3</sup>/st, dan 15.839 m<sup>3</sup>/s.</em> <em>To return period of 2 years was 31.234 m<sup>3</sup>/sec,</em> <em>39.235 m<sup>3</sup>/s, 22.351 m<sup>3</sup>/det, 20.044 m<sup>3</sup>/det, 32.300 m<sup>3</sup>/det, dan 28.097 m<sup>3</sup>/det. F</em><em>or the return period of 5 years is 45.346 m<sup>3</sup>/s,</em> <em>56.926 m<sup>3</sup>/s, 32.446 m<sup>3</sup>/s, 29.076 m<sup>3</sup>/s, 46.903 m<sup>3</sup>/s, dan 40.816 m<sup>3</sup>/s.</em></p>

scholarly journals Analisis Sistem Drainase Di Kawasan Permukiman Pada Ruas Jalan Getah Tunggal Kelurahan Cempaka Kota Banjarbaru

2019 ◽  
Vol 7 (2) ◽  
pp. 99-105
Author(s):  
Fathurrahman Fathurrahman ◽  
Akhmad Gazali
Keyword(s):  
Storage Capacity ◽  
Rainfall Data ◽  
Residential Areas ◽  
Rain Intensity ◽  
Chi Square ◽  
Comparison Results ◽  
Drainage Channels ◽  
Calculation Results ◽  
The Government ◽  
The City

Floods that occurred in the city of Banjarbaru especially those that occurred in residential areas caused problems for the community as well as challenges for the government to evaluate the drainage channel in the settlement. The existing rainwater drainage channels need to be reviewed and developed so that they can accommodate the water flowing in the area. One of the settlements that had occurred in the city of Banjarbaru was a residential area in Cempaka Subdistrict, Cempaka Village, precisely on Jalan Getah Tunggal. The data needed in this study are rainfall data, land use data, topographic data and existing data on channel conditions at the study site. Rainfall data were analyzed by Log Pearson III, Gumbel and Iwai Kadoya methods, then tested by Chi Square to choose the distribution of statistics received. The rainfall data was analyzed into the intensity of hourly rain using the mononobe method. Rain intensity is analyzed using a rational method to get a plan debit (Qchannel). Furthermore (the plan) is compared with (Qchannel), and (Qexisting). Based on the calculation results obtained (Qplanning) of 0.76 m3/sec, (Qchannel) of 0.78 m3/sec, (Qexisting) of 0.0645 m3/sec, the comparison results are obtained (Qchannel)>(Qplanning), (Qexisting) <(Qplanning). So that it can be concluded that the causes of flooding and inundation are sediments as high as 70 cm which reduce the storage capacity of the initial dimensions of the channel

scholarly journals Analisis Hidrologi untuk Perencanaan Sistem Polder di DKI Jakarta

2022 ◽  
Vol 10 (1) ◽  
pp. 29-38
Author(s):  
Segel Ginting
Keyword(s):  
Return Period ◽  
Flood Control ◽  
Storage Capacity ◽  
Reduction Factor ◽  
Effective Rainfall ◽  
Unit Hydrograph ◽  
Frequency Curve ◽  
Area Reduction ◽  
Resources Conservation ◽  
Sea Dikes

The application of the polder system for flood control in DKI Jakarta has become a must for coastal areas, especially with the construction of sea dikes along the coast of Jakarta as a solution to anticipate tidal flooding. One thing to consider when using a polder system in flood control is how much pump capacity and reservoir are needed. To answer this quetions, a hydrological analysis has been carried out with several method approaches, starting from determining the rainfall design in the form of a depth duration frequency curve in 1 hour to 48 hours, and then applied area reduction factor (ARF) to corrected rainfall design. Natural Resources Conservation Service (NRCS) method are uses to calculated runoff or effective rainfall and then with the unit hydrograph by time area method to produce a runoff hydrograph. Based on this approach, the Sentiong Polder plan has been carried out with the result that the required pump capacity for a 25-year return period is 32 m3/s and 50 m3/s for a 100-year return period with a storage capacity used of 1,507,500 m3. If you want to reduce the pump capacity, it is necessary to increase the storage capacity.

An innovative prefabricated building system for the seismic regions

2020 ◽  
pp. 127-129
Author(s):  
Ž. P. Cuckič
Keyword(s):  
Reinforced Concrete ◽  
Return Period ◽  
Research Work ◽  
Construction Behaviour ◽  
Building System ◽  
Seismic Regions ◽  
Earthquake Effects ◽  
Precast Elements ◽  
Prefabricated Building

At the end of a decade-long research work at the Moravamont plant in Gnjilane, a new completely prefabricated building system was created from reinforced concrete and prestressed precast elements on the track, which was called Moravamont 2000. Presented in paper final results demonstrates that the construction is well and rationally designed, that the construction behaviour for the maximum expected earthquake effects with a return period of 500 years, according to the criterion of regulation, is resistant and resistant to an earthquake without major damage.

scholarly journals Trends and dynamics of material and energy flows in an urban context: a case study of a city with an emerging economy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Clara Inés Pardo Martínez ◽  
William Alfonso Piña ◽  
Angelo Facchini ◽  
Alexander Cotte Poveda
Keyword(s):  
Latin America ◽  
Population Growth ◽  
Construction Materials ◽  
The Other ◽  
Material Flows ◽  
Urban Context ◽  
Rapid Urbanization ◽  
Urban Agglomerations ◽  
Energy Flows ◽  
The City

Abstract Background Currently, most of the world’s population lives in cities, and the rapid urbanization of the population is driving increases in the demand for products, goods and services. To effectively design policies for urban sustainability, it is important to understand the trends of flows in energy and materials as they enter and leave a city. This knowledge is essential for determining the key elements characterizing future urban growth and addressing future supply challenges. Methods This paper presents an analysis of the energy and material flows in the city of Bogotá over the time span from 2001 to 2017. Urban flows are also characterized in terms of their temporal evolution with respect to population growth to compare and identify the changes in the main input flows, wealth production, emissions and waste in the city. Results The results of the analysis are then compared with those for other selected large urban agglomerations in Latin America and worldwide to highlight similarities and make inferences. The results show that in Bogotá, there was a decrease in some of the material flows, such as the consumption of water and the generation of discharge, in recent years, while there was an increase in the consumption of energy and cement and in the production of CO2 emissions and construction materials. Solid waste production remained relatively stable. With respect to the other large cities considered, we observe that the 10-year growth rates of the flows with respect to population growth are lower in Bogotá, particularly when compared with the other urban agglomerations in Latin America. Conclusions The findings of this study are important for advancing characterizations of the trends of material and energy flows in cities, and they contribute to the establishment of a benchmark that allows for the definition and evaluation of the different impacts of public policy while promoting the sustainability of Bogotá in the coming decades.

scholarly journals Structural damages of L'Aquila (Italy) earthquake

2010 ◽  
Vol 10 (3) ◽  
pp. 499-507 ◽  
Author(s):  
H. Kaplan ◽  
H. Bilgin ◽  
S. Yilmaz ◽  
H. Binici ◽  
A. Öztas
Keyword(s):  
Reinforced Concrete ◽  
13Th Century ◽  
City Center ◽  
Concrete Frame ◽  
Wood Flooring ◽  
Frame Buildings ◽  
Historic Structures ◽  
The City ◽  
Masonry Units

Abstract. On 6 April 2009 an earthquake of magnitude 6.3 occurred in L'Aquila city, Italy. In the city center and surrounding villages many masonry and reinforced concrete (RC) buildings were heavily damaged or collapsed. After the earthquake, the inspection carried out in the region provided relevant results concerning the quality of the materials, method of construction and the performance of the structures. The region was initially inhabited in the 13th century and has many historic structures. The main structural materials are unreinforced masonry (URM) composed of rubble stone, brick, and hollow clay tile. Masonry units suffered the worst damage. Wood flooring systems and corrugated steel roofs are common in URM buildings. Moreover, unconfined gable walls, excessive wall thicknesses without connection with each other are among the most common deficiencies of poorly constructed masonry structures. These walls caused an increase in earthquake loads. The quality of the materials and the construction were not in accordance with the standards. On the other hand, several modern, non-ductile concrete frame buildings have collapsed. Poor concrete quality and poor reinforcement detailing caused damage in reinforced concrete structures. Furthermore, many structural deficiencies such as non-ductile detailing, strong beams-weak columns and were commonly observed. In this paper, reasons why the buildings were damaged in the 6 April 2009 earthquake in L'Aquila, Italy are given. Some suggestions are made to prevent such disasters in the future.

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