Setting out This is carried out following the dimensions specified in layout drawings. A commonly used setting out procedure is the profile board method. A series of boards that show the exact level 1 metre above the completed construction level are placed at intervals along the proposed line of the road..
What are the steps in construction of a road?
1. It is made of 5 structural elements: (1) the surface course (pavement), (2) the road base, (3) the sub- base, (4) the subgrade, and (5) the shoulders, landscaping, embankments. The conventional road construction technology is primarily dependent on naturally occurring aggregates..
What are the steps in construction of a road?
Setting out This is carried out following the dimensions specified in layout drawings. A commonly used setting out procedure is the profile board method. A series of boards that show the exact level 1 metre above the completed construction level are placed at intervals along the proposed line of the road..
Base Aggregate
The aggregate foundation course is laid after additional grading of the surface. Crushed gravel or stone aggregate base is equally distributed over the road surface. The pavement curb and gutter will be built immediately after the gravel is spread on the surface if the road is in a city or town. For example, if a road is being constructed through K.
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Excavation and Clearing
The area where the road will be built must be swept of all vegetation, which means shrubs, trees and bushes must be removed. Excavation machines will also remove stones and rocks from the path of the future road. Control measures such as ditches, fences, and basins are used to keep the cleared area from eroding.
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Fine Grading
Fine grading necessitates construction workers leveling the surface following structural engineers’ standards. It requires both manual labor and digging, as well as graders, or grading plant machinery. The grading is stabilized using limestone or concrete to make it last.
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Initial Planning
The first stage is to plan out what work needs to be done and how it will be carried out. This involves identifying any hazardous areas where work needs extra precautions and setting up appropriate traffic control measures. This may also involve liaising with utility companies so that they can relocate their services or install temporary ones while.
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Mounting
As diggers, excavation plant machines, and bulldozers spread dirt and soil over the region where the future pathway would run, the road begins to take shape. Road graders are then used to level and smooth the surface. Drains and culverts, which are massive concrete pipes, are used to keep the road from flooding by diverting groundwater, sewage, and.
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Paving Asphalt
The asphaltcan be placed when the gravel has been equally spreading. Asphalt is made up of petroleum waste, aggregate base material, and bitumen, a glue-like, sticky substance. Up to four levels of asphalt can be layered on top of each other, depending on the estimated traffic on the route. Asphalt is often manufactured and mixed at huge plants und.
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Preliminary Design
Once the inventory is complete, preliminary designs are prepared for each stage in the construction process. These designs include general layouts for proposed roadway alignments, retaining walls, and other structures needed for the project. They also show locations for temporary traffic control devices such as cones, barricades, or signs to direct.
Road construction procedure pdf
Roads in Bosnia and Herzegovina are the most important traffic branch in Bosnia and Herzegovina and an important part of the European road network. Roads are built, maintained and supervised by companies run by the Federation of Bosnia and Herzegovina and the Republika Srpska. The total length of roads in the country as of 2020 is 9,110 km (5,660 mi), and they are categorized as motorways, main and regional.
