What is cross section in road design?
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A roadway cross section is a vertical section of the ground and roadway at right angles to the centerline of the roadway, including all elements of a highway or street from the right-of-way line (lanes, shoulders, retaining walls, curbs, medians, pavement structure, roadside slopes, ditches, bike lanes and sidewalks).
What is the thickness of concrete road?
The minimum thickness of reinforced concrete pavements should be 6 inches, except that the minimum thickness for driveways will be 5 inches and the minimum thickness for reinforced overlays over rigid pavements will be 4 inches.
What is the minimum thickness of concrete road?
280 millimeters
To address the early deterioration of roads due to damaging effects of overloading, the Department of Public Works and Highways (DPWH) prescribed the use of concrete pavement with minimum thickness of 280 millimeters and with steel dowels in all transverse joints.
What are the components of road cross section?
The major cross section elements considered in the design of streets and highways include the pavement surface type, cross slope, lane widths, shoulders, roadside or border, curbs, sidewalks, driveways, and medians. Due consideration should be given to the motoring and non-motoring users in designing the cross section.
What is typical cross section?
Typical cross sections are a graphical representation of existing conditions or work to be preformed within the station limits of a roadway. A typical cross section represents the predominant section of roadway and shows the major elements.
How thick is a freeway?
This analysis is based on a 42,500-mile (73,000-km) Interstate Highway System with four 12-foot (3.7-m) wide lanes. Sixty per- cent of the system is paved with concrete that is 11 inches (28 cen- timeters) thick.
What is a concrete road?
The roads having their wearing surface consisting of cement concrete (plane or reinforced) are known as cement concrete roads or concrete roads. These roads are types of rigid pavements and remain in serviceable condition under all weather conditions. Thus concrete roads are also considered as all weather roads.
How do you prepare a road estimate for CC?
Roughly 6-7 crore Rupees per Km are required for the construction of cement concrete road. Although the bituminous road requires very little amount somewhat around 30-40 lacs the life of cement concrete road is more.
What is JCP pavement?
JCP is a pavement type that localises crack formation by installing transverse joints at regular intervals and ensures load transfer between slabs through dowel bars. Compared to CRCP, JCP is relatively inexpensive to construct and relatively easy to repair.
How is cross section of road calculated?
= Bh i + Sh i 2 @BULLET i = number of section varies from (i = 1……..n) along the road. @BULLET S: 1 = Horizontal: Vertical @BULLET B = Design Width of Road @BULLET h = Height between exiting ground level and design level at a road section. @BULLET V i = Volume of earthwork for Cut/Fill at section i.