MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202621094855 A) filed by Indian Institute Of Technology Bombay; and Geostruct Engineering Solutions on August 05, 2026, for Pressure-Relieving Drain Structures On Roadways For Protecting From Deterioration And Method Of Constructing Thereof.
Inventors include Devendra Narain Singh; and Mohammed Aarif Shaikh.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: According to the present disclosure, a method of constructing a pressure-relieving drain structure on roadways having pavements at the underpass is disclosed. The method comprises the steps of drilling a plurality of holes (11) on a sub-grade layer (2) of a roadway (10) pavement at the underpass, inserting a plurality of perforated casing pipes (12) into the plurality of holes (11), placing a perforated PVC pipe (14) centrally into each of the plurality of perforated casing pipes (12), thereby forming an annular space (15), filling the annular space with coarse aggregates (15), covering the top of plurality of holes (11) with at least two layers of geotextile thereby forming a plurality of pressure relieving drains, and forming a granular sub-base layer (18) on the sub-grade layer (2) of the pavement. The pressure relieving drain structure forms a channel on the pavement for draining seepage water from waterlogged pavements during rainfalls. Reference Figure:
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