Ramadhan, Surya (2018) Perencanaan Sistem Drainase Perumahan Grand Peninsula Surabaya. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perumahan Grand Peninsula berada di kelurahan Mulyorejo, Kecamatan Mulyorejo, Surabaya. Perumahan ini akan dibangun diatas lahan seluas ± 10 ha. Kondisi saat ini lahan yang dibangun masih sekitar 30% dan sisanya masih dalam tahap pengerjaan. Untuk sistem drainasenya masih belum dibuat sehingga perlu dilakukan perencanaan salurannya. Saluran drainase di beberapa lokasi tepi jalan sudah dibangun untuk mengalirkan sementara air limpasan hujan. Kawasan perumahan harus memiliki perencanaan sistem drainase yang tepat agar air yang melimpas dapat mengalir ke saluran dan tidak menyebabkan genangan.
Analisa pada tugas akhir ini dimulai dengan melakukan survey genangan dan dimensi saluran eksisting di sekitar lokasi, kemudian merencanakan skema jaringan dan diteruskan dengan menghitung analisa hidrologi dan analisa hidrolika serta kebutuhan kolam tampung, pintu air, dan pompanya. Untuk analisa hidrologi distribusi yang digunakan yaitu distribusi Log Pearson Type III dan data hujan dari Stasiun Hujan Keputih, periode ulang yang direncanakan adalah dua, lima, dan sepuluh tahun. Untuk menghitung debit banjir rencana menggunakan metode rasional. Analisa hidrolika dilakukan untuk mengetahui kapasitas saluran, dimensi saluran rencana, dimensi kolam tampungan, dan kapasitas pompa.
Berdasarkan hasil analisa didapatkan rencana saluran dengan ukuran yang bervariasi. Saluran direncanakan menggunakan tipe U-ditch. Untuk kolam tampung direncanakan dimensi 82m x 53m x 2m yang mampu mengatasi hujan selama 3 jam dengan mengombinasikan pompa air yang mengeluarkan debit sebesar 0,90 m3/dt untuk di limpahkan ke saluran pembuang. Pintu air dengan dimensi 1,4m x 0,9m dan bukaan konstan sebesar 24 cm juga diharapkan mampu mengalirkan air dengan debit maksimal sebesar 0,90 m3/dt pada saat tidak terjadi hujan. Dari hasil analisa profil muka air didapatkan elevasi muka air hulu saluran pembuang section 1-2 yang juga merupakan hilir dari sistem drainase kawasan perumahan Grand Peninsula adalah sebesar +3,801. Meskipun ada pengaruh backwater, saluran masih bisa menampung aliran air tersebut sehingga tidak terjadi banjir untuk periode ulang 5 tahun.
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Grand Peninsula housing is located in Mulyorejo village, Mulyorejo subdistrict, Surabaya. This housing will be built on an area of ± 10 ha. The current condition of the land that is built is still about 30% and the rest is still in the working phase. For drainage system is still not made yet so the duct planning needs to be done. The drainage at some roadside locations have been built to temporary due to rainwater runoff. The residence area should have proper drainage system planning to allow the water flow into the duct and not causing inundation.
The analysis of this final project begins by surveying the inundation and dimension of the existing duct around the site, then planning the network scheme and proceeding by calculating hydrological analysis and hydraulics analysis as well as the needs of the storage pond, water gate, and pump. For hydrological analysis the distribution used is the Pearson Type III Log distribution and the rain data is from Keputih Rain Station, the planned repetition period is two, five, and ten years. To calculate the flood discharge plan is using the rational method. Hydraulic analysis was conducted to determine duct capacity, duct dimension plan, dimension of storage pool, and pump capacity.
Based on the analysis results we can obtain the duct plan with varying sizes. The ducts are planned to use U-ditch type. The storage ponds is planned using dimension of 82m x 53m x 2m that can overcome rain for 3 hours by combining water pump which discharge 0,90 m3 / dt to be applied to the drainage ditch. Water gates with dimensions of 1.4m x 0.9m and a constant opening of 26 cm are also expected to flow water with a maximum discharge of 0.90 m3/s in the absence of rain. From the analysis of the profile of water level we can obtain the elevation of upstream water level at section 1-2 disposal duct which is also a downstream of the Grand Peninsula residence drainage system, is amount of +3,801. Although there is a backwater effect,, the duct is still can accommodate the water flow so there is no flooding in 5 year re-period.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSS 627.54 Ram p-1 3100018074897 |
| Uncontrolled Keywords: | drainase, hidrologi, hidrolika, saluran, pompa air, kolam tampung, long storage, pintu air, backwater. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TC Hydraulic engineering. Ocean engineering |
| Divisions: | Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis |
| Depositing User: | Surya ramadhan |
| Date Deposited: | 03 Apr 2018 02:03 |
| Last Modified: | 03 Sep 2020 07:31 |
| URI: | http://repository.its.ac.id/id/eprint/50344 |
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