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ANALISIS DEBIT BANJIR RENCANA BENDUNG TRITIS KABUPATEN SRAGEN Sari, Lidya Ayu Setya Kumala; Wijayanti, Paska; Priyanto, Kusdiman Joko
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5131

Water availability is an aspect that should be given high priority by the government to meet community needs, both in urban and rural areas. Generally, the current water sources come from rivers, canals, or shallow groundwater wells. The water availability in irrigated land obtained from weirs is crucial for the agricultural sector. Dams have a role to hold water and distribute it through irrigation channels to agricultural land, in order to ensure consistent water availability, especially in the dry season. Tritis Dam functions to raise the elevation of the river water level so that it can be used to irrigate into irrigation channels. Tritis weir is a permanent dam with a stone masonry structure located in Sambirejo Village, Sambirejo District, Sragen Regency, which is located in the Tritis Watershed with an area of ??31.15 km2. The purpose of this study is to determine planned flood discharge value. The method used in this study is the Synthetic Unit Hydrograph (HSS) ITB-I, but previously it must process GPM (Global Precipitation Measurement) satellite rainfall data and calculate the planned rainfall using the Log Pearson III frequency distribution method. The planned flood discharge in the Tritis Watershed, Sragen Regency using the HSS ITB I method was obtained at 258.41 m3/second for a 50-year return period and 318.09 m3/second for a 100-year return period.

KARAKTERISASI KUAT TEKAN BETON AGREGAT LOKAL DENGAN VARIASI SUPERPLASTICIZER PADA UMUR AWAL: KARAKTERISASI KUAT TEKAN BETON AGREGAT LOKAL DENGAN VARIASI SUPERPLASTICIZER PADA UMUR AWAL Kukuh Kurniawan Dwi Sungkono; Wijayanti, Paska; Prasetyo, Erwin aji; Kurniawan, Rizal; Khoirudin, Wahyu; Izzudin, Daffa Zaidan Alam
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5191

This study aims to characterize the effect of superplasticizer addition on local aggregate concrete workability and early-age compressive strength. The methodology involved the use of Portland Composite Cement, local fine and coarse aggregates, and Fosroc Auracast SP310 superplasticizer at dosages of 1%, 1.6%, and 2%. Four concrete mix designs were prepared: normal concrete (BN) and concrete with superplasticizer additions (BN-1%, BN-1.6%, BN-2%). Slump and compressive strength tests were conducted according to Indonesian standards to assess workability and strength at 7 and 14 days. Results indicate that superplasticizer addition significantly improves concrete workability with slump values ranging from 560 to 630 mm compared to 115 mm for the control. Compressive strength also increased markedly, with BN-2% showing the highest strength at 38.56 MPa at 7 days and 51.94 MPa at 14 days. The study concludes that superplasticizer effectively enhances both workability and compressive strength without increasing water demand, resulting in denser and stronger concrete at early curing ages.

PERANCANGAN DESAIN PUBLIC SPACE DESA PERENG KABUPATEN KARANGANYAR Kukuh Kurniawan Dwi Sungkono; Prabowo, Wahyu; Handoyo, Suryo; Mulyandari, Erni; Wijayanti, Paska; Sumina, Sumina; Gien Fridel C P, Dendi; Oktava, Rendi Ari; Hamdany, Syarif; Ervan , Wibowo Rachmad P; Widyanto, Muh Aqill Fadia; Pratama, Chandra; Daffa , Zaidan Alam I
GANESHA: Jurnal Pengabdian Masyarakat Vol 5 No 2 (2025): Juli 2025
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Tunas Pembangunan Surakarta (UTP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/ganesha.v5i2.5167

Perancangan desain ruang publik di Desa Pereng, Kabupaten Karanganyar, dilakukan sebagai respons terhadap kebutuhan masyarakat akan ruang terbuka yang multifungsi, nyaman, dan aman. Pemilihan topik ini penting mengingat minimnya fasilitas publik yang mampu mendukung interaksi sosial, rekreasi, serta pengembangan ekonomi lokal. Metode pengabdian masyarakat yang digunakan adalah perancangan arsitektural yang melibatkan survei kebutuhan masyarakat, analisis lokasi, dan penyusunan konsep desain yang inklusif serta berkelanjutan. Hasil pengabdian menunjukkan terciptanya ruang publik yang mengintegrasikan fasilitas olahraga, taman bermain anak, serta kios UMKM yang dapat meningkatkan kualitas hidup dan daya tarik ekonomi desa. Ruang publik ini diharapkan menjadi pusat aktivitas sosial dan ekonomi yang berkontribusi pada pemberdayaan masyarakat. Kesimpulannya, perancangan ini memberikan solusi konkret dalam pemanfaatan ruang terbuka yang adaptif terhadap kebutuhan masyarakat Desa Pereng, sekaligus menjadi model pengembangan public space yang dapat direplikasi pada wilayah lain.

ANALISIS DEBIT BANJIR RENCANA BENDUNG TRITIS KABUPATEN SRAGEN Sari, Lidya Ayu Setya Kumala; Wijayanti, Paska; Priyanto, Kusdiman Joko
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5131

Water availability is an aspect that should be given high priority by the government to meet community needs, both in urban and rural areas. Generally, the current water sources come from rivers, canals, or shallow groundwater wells. The water availability in irrigated land obtained from weirs is crucial for the agricultural sector. Dams have a role to hold water and distribute it through irrigation channels to agricultural land, in order to ensure consistent water availability, especially in the dry season. Tritis Dam functions to raise the elevation of the river water level so that it can be used to irrigate into irrigation channels. Tritis weir is a permanent dam with a stone masonry structure located in Sambirejo Village, Sambirejo District, Sragen Regency, which is located in the Tritis Watershed with an area of ??31.15 km2. The purpose of this study is to determine planned flood discharge value. The method used in this study is the Synthetic Unit Hydrograph (HSS) ITB-I, but previously it must process GPM (Global Precipitation Measurement) satellite rainfall data and calculate the planned rainfall using the Log Pearson III frequency distribution method. The planned flood discharge in the Tritis Watershed, Sragen Regency using the HSS ITB I method was obtained at 258.41 m3/second for a 50-year return period and 318.09 m3/second for a 100-year return period.

KARAKTERISASI KUAT TEKAN BETON AGREGAT LOKAL DENGAN VARIASI SUPERPLASTICIZER PADA UMUR AWAL: KARAKTERISASI KUAT TEKAN BETON AGREGAT LOKAL DENGAN VARIASI SUPERPLASTICIZER PADA UMUR AWAL Kukuh Kurniawan Dwi Sungkono; Wijayanti, Paska; Prasetyo, Erwin aji; Kurniawan, Rizal; Khoirudin, Wahyu; Izzudin, Daffa Zaidan Alam
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5191

This study aims to characterize the effect of superplasticizer addition on local aggregate concrete workability and early-age compressive strength. The methodology involved the use of Portland Composite Cement, local fine and coarse aggregates, and Fosroc Auracast SP310 superplasticizer at dosages of 1%, 1.6%, and 2%. Four concrete mix designs were prepared: normal concrete (BN) and concrete with superplasticizer additions (BN-1%, BN-1.6%, BN-2%). Slump and compressive strength tests were conducted according to Indonesian standards to assess workability and strength at 7 and 14 days. Results indicate that superplasticizer addition significantly improves concrete workability with slump values ranging from 560 to 630 mm compared to 115 mm for the control. Compressive strength also increased markedly, with BN-2% showing the highest strength at 38.56 MPa at 7 days and 51.94 MPa at 14 days. The study concludes that superplasticizer effectively enhances both workability and compressive strength without increasing water demand, resulting in denser and stronger concrete at early curing ages.

SISTEM OPERASIONAL BENDUNG BARAN DITINJAU DARI KETERSEDIAAN AIR Wijayanti, Paska; Arbianto, Reki; Kareri Laki, Sintia
Jurnal Teknik Sipil dan Arsitektur Vol 29 No 2 (2024): JURNAL TEKNIK SIPIL DAN ARSITEKTUR
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v29i2.3485

Sebagian besar penduduk Indonesia bergantung pada pertanian sebagai sumber pangan, ketersediaan air irigasi dari suatu bendung dapat mempengaruhi tingkat keberhasilan sektor pertanian serta menentukan tingkat ekonomi nasional. Bendung Baran mengairi daerah irigasi (D.I) dengan luas area 179 ha. Penelitian ini bertujuan untuk mengetahui sistem operasi Bendung Baran terhadap ketersediaan air dan kebutuhan air irigasi. Metode yang digunakan yaitu metode FJ.Mock untuk menghitung ketersediaan air, metode KP-01 untuk menghitung kebutuhan air irigasi, dan metode imbangan air untuk menghitung simulasi operasi. Data hujan yang digunakan adalah Stasiun Waduk Cengklik selama 10 tahun (2013-2022), data klimatologi, data teknis Bendung Baran, dan skema/layout jaringan irigasi. Hasil perhitungan ketersediaan air mampu melayani kebutuhan air irigasi dengan debit bulanan rerata sebesar 2,73 m3/detik, dimana debit terbesar dibulan Januari sebesar 5,495 m3/detik dan debit terendah dibulan Agustus sebesar 0,93 m3/detik. Hasil perhitungan kebutuhan air irigasi menunjukkan debit rerata bulanan sebesar 0,44 m3/detik, dimana debit terbesar diperoleh sebesar 0,60 m3/detik pada periode kedua bulan Juni dan debit terendah diperoleh sebesar 0,21 m3/detik yaitu pada periode pertama bulan Maret. Hasil perhitungan simulasi operasi Bendung Baran menunjukkan ketersedian air dan kebutuhan air irigasi pada masa tanam padi tidak memenuhi pada bulan Juli dan Agustus. Hal ini dikarenakan minimnya curah hujan, terdapat beberapa jaringan irigasi yang rusak, dan adanya penimbunan sampah, sehingga hasil perhitungan perubahan volume tampungan ditambah dengan volume tampungan awal Bendung Baran berada dibawah tampungan minimum Bendung Baran.

Flood Analysis of Pepe Baru River Sub-Watershed Using HEC-RAS 4.1 Aplikasi Wijayanti, Paska; Sungkono, Kukuh Kurniawan Dwi; Arbianto, Reki; Utomo, Dhody Budi
Journal of Civil Engineering and Planning (JCEP) Vol. 6 No. 2 (2025)
Publisher : Program Studi Sarjana Teknik Sipil Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/jcep.v6i2.11398

The conversion of catchment areas into built-up land has increased surface runoff and reduced natural river storage capacity, thereby elevating flood risk, particularly during high rainfall events. One area that frequently experiences flooding is Sekip Kadipiro, located within the Pepe Baru Sub-watershed of the Pepe Watershed system in Surakarta City. The hydrological connection of this area to the Pepe Watershed makes it highly vulnerable to flooding. In January 2023, heavy rainfall caused inundation affecting approximately six residential houses in Sekip Kadipiro. This study aimed to determine the 20-year return period design flood discharge and to simulate flooding in the Sekip Kadipiro area using the HEC-RAS 4.1 application. The analysis utilized 17 years of rainfall data, physical characteristics of the Pepe Baru Sub-watershed, and river geometry data processed using QGIS 3.10. The 20-year design rainfall was calculated using the Log Pearson Type III method, resulting in a value of 359.422 mm. Hourly rainfall distribution was analyzed using the ABM method for a duration of four hours, while effective rainfall was determined using the SCS-CN method. The design flood discharge for the 20-year return period was estimated using the Nakayasu Synthetic Unit Hydrograph method, yielding a peak discharge of 1745.42 m³/s. Hydraulic simulation results from HEC-RAS 4.1 indicate that floodwater levels reach an average of 1.75 m above the embankment crest. This demonstrates that the existing river channel capacity is insufficient to convey the design flood discharge, resulting in overflow and a high potential for flooding in surrounding residential areas.

ANALISIS IMBANGAN AIR PADA DAERAH IRIGASI BRAJAN KABUPATEN KARANGANYAR Putra, Angga Andreansah; Wijayanti, Paska; Nursetyo, Gatot
Journal of Civil Engineering and Infrastructure Technology Vol 4 No 2 (2025): JCEIT
Publisher : Civil Engineering, Faculty of Engineering, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jceit.v4i2.5861

Brajan Dam is one of the dams in Karanganyar Regency. Brajan Dam has an irrigation area of 137 ha which is managed by the Gandul area. As time goes by, it is necessary to refresh appropriate planting patterns so that water needs can be met. This research aims to determine the water balance in the Brajan Irrigation Area. The method used is a quantitative descriptive method and direct observation. The analysis stage begins with exploring the irrigation network and then collecting secondary data at the research location. The secondary data was obtained from the Bengawan Solo Water Resources Development Center (BPSDA). The analysis stage is by comparing the need and availability of irrigation water. Based on the results of the analysis in the Brajan irrigation area, it was found that the annual average availability of irrigation water was 0.32 m3/second. For the maximum water requirement for Brajan irrigation, the results were 0.37 m3/second in the first month of July during the second rice planting period. For the Brajan irrigation balance, results were obtained with a water shortage value of 17% and adequate water requirements of 83%. Thus, the availability of water in the Brajan irrigation area is still sufficient to meet agricultural irrigation needs.

Pola Operasi Waduk Wonogiri Setelah Pembangunan Pintu Pelimpah Baru Untuk Pengendalian Banjir Wijayanti, Paska; Istiarto, Istiarto; Jayadi, Rachmad
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 27, Nomor 2 (2021)
Publisher : Department of Civil Engineering, Diponegoro University

Wonogiri reservoir in upstream Bengawan Solo experienced sedimentation problems that endanger its operation. Much of sediments come from Keduang watershed. To overcome this problem, closure dike was constructed to localize the sediment from Keduang watershed. The dike divides the reservoir into main and sediment storage reservoirs, each has its spillway. This paper presents results of the study on Wonogiri Reservoir operation during flood period after dike construction. The study followed a two-step calculation. It updated the design flood by employing rainfall data frequency analysis and Collins unit hydrograph. Flood routing was subsequently done by applying level pool method. Two conditions were considered, namely existing condition whose initial water level was +135.3 meters and new condition whose initial water level was +136.3 meters. The study reveals an increase of the flood discharge to Wonogiri reservoir by 7.7% and 3.6% for the 60 year and 500 year floods, respectively, as compared to the previous study of Pradipta (2014). The study shows that Wonogiri reservoir is prone to overtopping under 500 year flood. It is recommended to lower the control water level of the new spillway.

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