Question
Download Solution PDFExtra widening of pavements provided because of off tracking is known as:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The extra width of carriageway that is required on a curved section of a road over and above that is required on a straight alignment is known as Extra Widening.
Mechanical widening: The widening required to account for the off-tracking due to rigidity of wheelbase is known as Mechanical widening. It can be calculated as:
\({W_m} = \frac{{n{l^2}}}{{2R}}\)
n = Number of lanes
l = length of wheelbase = 6.1 m
R = Radius of circular curve
Psychological Widening: Extra width of pavement provided for psychological reasons such as overhangs of vehicles, greater clearance for crossing, etc is known as Psychological Widening.
\({W_{ps}} = \frac{V}{{9.5\sqrt R }}\)
V = Design speed (kmph)Last updated on May 28, 2025
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