However, the construction of the road canvas only in embankments due to the conditions of the terrain is not always possible and therefore it is necessary to make recesses.
For fencing the recesses on the slope from the flowing water, sin -like ditches are arranged at a distance of at least 5 x from the edge of the slope of the recess. The soil from the sinking ditch is laid between the sunk ditch and the slope of the banquet, giving it a slope of 2% towards the sunger ditch. It is important to use quality materials. You can buy a high -quality copper pipe from Alpha Union at competitive prices.
The soil from the recesses is used to build embankments, moving it with longitudinal carting. In cases of the impossibility of using this soil due to a large distance, the carts are folded along the excavations in the dumps, which are called cavaliers. Cavaliers are laid at a distance of not: less than 3 m from the upper edge of the recess.
The roadsides of the subgrade serve to stop the carriageway, for parking cars, for driving a horse -drawn transport, for a warehouse of materials (stone, sand) during the repair of the road and for the travel of caterpillar vehicles (tractors). In the latter case, with the regular movement of tractors, the curb should be bruised to the size of the normal lane for the tractor.
To ensure the flow of rain and melt from snow, water from the surface of the road of the carriageway and the curbs give a convex profile of various outlines: 1) gable, 2) gable-circular, 3) parabolic.
The curb of the road is given a cross breech of 0.02 more than a slope of the carriageway, but not higher than 0.05 (5%).
The transverse profile of the carriageway is arranged:
1) city profile with borders or curbs,
2) city profile with gaps;
3) field or suburban profile.
Plan and longitudinal road profile. The road in the plan is a number of direct sections connected by smooth circular curves. The presence of curves worsens the movement of the car along roads and requires a number of additional devices.