MINIMUM ACCEPTABLE CROSS SLOPES OF ASPHALT ROADS FOR DRAINAGE CONSIDERATION

Document Type : Original Article

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Abstract:
In paved roads, storm water drainage is vital. Poor drainage allows water to remain on
road surface for longer time periods, which in turn will negative influences traffic
safety and flow efficiency. Furthermore, it can increase the water in gress to pavement
layers leading to a significantly rapid deterioration of pavement structure.
In straight segments paved roads, pavement cross -slope is essential to drain surface
water away from carriageway surface. International and local experiences pro vide
typical values for road cross slope to be used for drainage consideration without
considering the characteristics of pavement surface or carriageway width. This paper
focuses on establishing practical design criteria and CAD simulation that can help in
selecting the minimum accepted pavement cross -slope for drainage taking into
consideration the effect of pavement surface conditions, road surface characteristics,
and carriageway width.

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