District / city roads are local roads in the system of primary road network which does not include national roads and provincial roads, which connects the capital of the district to the center of local activities, antarpusat local activities, as well as public roads in the network system of secondary roads in the district / city and street strategic district / city.
In doing road construction and widening there are several steps that must be done.
- Site clearance work
Digging on the shoulder of the road or roadside for the cleaning field, and excavation is done not to damage the short duration, which has been in test CBR ( California Bearing Ratio ),
CBR (California Bearing Ratio) is the ratio between load penetration of a layer of soil or pavement to the standard material with the depth and penetration of the same speed.
for excavation using heavy equipment excavator. - Heaps of material selection
stockpiled material with the selection of materials, so that the material can withstand loads that exist on the road
This material is transported using trucks. - Equalization of the road
for road compaction process using three machines that work at the same time dikarnakan greatly affected by the density in the road
- Motor Grader grader serves as a tool normally used for leveling and shaping the land surface. In addition, also used for mixing and spreading soil and asphalt mixture.
- Water tanker is heavy vehicles designed to carry water, dry bulk or dust on the road. heavy vehicles is similar to rail cars designed to carry liquefied loads. Many variants exist for a variety of liquids that can be transported. Tank trucks tend to be large, they can be insulated or non-insulated, pressurized or non-pressurized, and is designed to load one or more (often by means of internal divisions in their tank). when compared with the truck trailer sei them difficult untukberkendara due to weight and high center of gravity
Tridum roller, roller three-wheeled, one front and two wheels in the taillights follow. Three wheel roller is often also called macadam roller, because of this type are often used in efforts compaction coarse grained materials. To add to the weight of three wheel roller, then an empty wheel cylinder filled with liquid (oil or water) or sometimes also filled with sand. In general, the weight of the compactor is between 6-12 tonnes.
source path definition Street:
http://afrilangga.blogspot.com/2016/03/pengertian-jalan-nasionalprovinsidan.html?m=1
source CBR
http://lauwtjunnji.weebly.com/cbr-lapangan.html
source equipment tools
https://niganku.wordpress.com/2014/03/15/nama-nama-alat-berat-pembuat-jalan-raya-dan-prosesnya/
Source image
from me, the results of field work
to how the process of asphalting I'll post the next time.
Thanks you