2. SUB-BALLAST DAN BALLASTLapisan i

2. SUB-BALLAST DAN BALLAST
Lapisan ini disebut pula sebagai Tack Bed, karena fungsinya sebagai tempat pembaringan trek rel KA. Lapisan Ballast merupakan suatu lapisan berupa batu-batu berukuran kecil yang ditaburkan di bawah trek rel, tepatnya di bawah, samping, dan sekitar bantalan rel (sleepers). Bahkan terkadang dijumpai bantalan rel yang “tenggelam” tertutup lapisan ballast, sehingga hanya terlihat batang relnya saja.
Fungsi lapisan ballast adalah:
1. untuk meredam getaran trek rel saat rangkaian KA melintas,
2. menyebarkan axle load dari trek rel ke lapisan landasan di bawahnya, sehingga trek rel tidak ambles,
3. menjaga trek rel agar tetap berada di tempatnya,
4. sebagai lapisan yang mudah direlokasi untuk menyesuaikan dan meratakan ketinggian trek rel (Levelling),
5. memperlancar proses drainase air hujan,
6. mencegah tumbuhnya rumput yang dapat mengganggu drainase air hujan.
7. Komponen Penyusun Rel Kereta Api
8. Setelah lapisan landasan sebagai pondasi jalan rel KA selesai dibangun, tahap berikutnya adalah membangun trek rel KA. Perlu diketahui bahwa pada setiap komponen mempengaruhi kualitas rel KA itu sendiri. Gambar di bawah ini adalah skema konstruksi jalan rel KA beserta komponen-komponennya.

Hasil (Inggris) 1:

2. SUB-BALLASTS and BALLASTSThis layer is referred to as Tack Bed, because it functions as a place to lie down the track railroads. Ballast layer is a layer of small stones sprinkled under the railway tracks, on the bottom, side, and about the bearing rail (sleepers). Even sometimes found bearing rail that "sink" covered a layer of ballast, so that the only visible stem tracks only.Ballast layer functions are:1. to dampen the vibration of rail tracks as a TRAIN passed, arrangements2. spread axle load from the track Rails to the cornerstone layer underneath it, railway tracks so that no banned,3. keep the rail tracks to remain in place,4. as the layers are easily relocated to adjust the height of the rail tracks and leveling (Levelling),5. streamline the drainage of rainwater,6. to prevent the growth of grasses that can interfere with the drainage of rainwater.7. the components Of the railway8. After lining the runway as the Foundation of the railroads were completed, the next stage is to build railroads tracks. Please note that on every component affects the quality of the railroads themselves. The image below is a schematic rail KA road construction and its components.

Hasil (Inggris) 2:

2. SUB-BALLAST AND BALLAST
This layer is also referred to as a Tack beds, because of its function as a bedside railway tracks. Ballast layer is a layer of small stones are sprinkled down the track rail, right under, next to, and around sleepers (sleepers). Even sleepers are sometimes found "drowned" covered in a layer of ballast, so just look trunks rails only.
The function of the ballast layer is:
1. rail tracks to dampen vibration while series of trains passing,
2. spread axle load of the rail tracks to the foundation layer below it, so that no rail track ambles,
3. keep track rail to remain in place,
4. as layers easily relocated to adjust the height of the track rail and leveling (leveling),
5. expedite the drainage of rainwater,
6. prevent the growth of grasses that can interfere with the drainage of rainwater.
7. Composer Components Railway
8. After the foundation layer of foundation as railway lines completed, the next stage is to build the railway tracks. Please note that on each component affects the quality of the railway itself. The image below is a schematic of the construction of railway lines and their components.