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Civil - Highway Planning and Alignment - Highway Engineering

Highway Planning: Right of way

   Posted On :  23.07.2016 09:20 pm
Highway Planning: Right of way

Right of way (ROW) or land width is the width of land acquired for the road, along its alignment.

Right of way.

 

Right of way (ROW) or land width is the width of land acquired for the road, along its alignment. It should be adequate to accommodate all the cross-sectional elements of the highway and may reasonably provide for future development. To prevent ribbon development along highways, control lines and building lines may be provided. Control line is a line which represents the nearest limits of future uncontrolled building activity in relation to a road. Building line represents a line on either side of the road, between which and the road no building activity is permitted at all. The right of way width is governed by:

 

Width of formation: It depends on the category of the highway and width of roadway and road margins.

 

Height of embankment or depth of cutting: It is governed by the topography and the vertical alignment.

 

Side slopes of embankment or cutting: It depends on the height of the slope, soil type etc. Drainage system and their size which depends on rainfall, topography etc.

 

Sight distance considerations : On curves etc. there is restriction to the visibility on the inner side of the curve due to the presence of some obstructions like building structures etc.

Reserve land for future widening: Some land has to be acquired in advance anticipating future developments like widening of the road.

The importance of reserved land is emphasized by the following. Extra width of land is available for the construction of roadside facilities. Land acquisition is not possible later, because the land may be occupied for various other purposes (buildings, business etc.)

 

The normal ROW requirements for built up and open areas as specified by IRC is given in Table 12:4 A typical cross section of a ROW is given in Figure 12:4.


Tags : Civil - Highway Planning and Alignment - Highway Engineering
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