Press Esc to close

Flawed road-building process creates potholes, say experts

DH News Service, Bengaluru, Oct 4 2017, 1:15 IST
Vehicle of Couple killed and their minor kid injured when bus belong to Tamil Nadu State Road Transport hit their motorcycle on City Market flyover on Tuesday wee hours, after BBMP put cement concrete on Pot hole, in Bengaluru.

Vehicle of Couple killed and their minor kid injured when bus belong to Tamil Nadu State Road Transport hit their motorcycle on City Market flyover on Tuesday wee hours, after BBMP put cement concrete on Pot hole, in Bengaluru.

Why do roads in Bengaluru develop potholes after just one spell of heavy rainfall? That’s because the Bruhath Bengaluru Mahanagara Palike (BBMP) uses unscientific methods to build roads, say urban transport experts.

M N Sreehari, an urban traffic expert, says: “Flash floods, cyclones or snowfalls are common across the globe, but they do not create potholes because roads there are built scientifically. When there are no potholes, there are few accidents. Developed countries also follow a proper mechanism to repair a damaged road.”

Sreehari says the BBMP must have proper guidelines for road construction. “Building asphalt roads requires heating a mixture of sand, gravel and bitumen to 140şC. Bitumen should be 5.5% of the mixture. But most of the time, it’s just 3.3%. When the mixture is brought to the construction site, it should be heated to 120şC. This heating requirement is not met either. The third flaw is that road builders add soil, not sand, to the mixture because sand is not cheap. Because of this flawed process, the mixture does not hold to the ground, which leads to potholes when it rains,” Sreehari added.

Sanjeev Dyamannavar, an urban road expert, believes that not removing silt from stormwater drains is the main reason for the creation of potholes as that leaves no space for water from the road to flow. Had the BBMP taken up the SWD work before the onset of monsoon, the pothole menace could have been averted,” he added.

Lokesh Hebbani, a city planning expert, suggests white-topping or concretising of roads to make them durable and avert accidents. “The government spends thousands of crores on asphalting roads which get damaged within a year. It would be better if the government spends the same amount on white-topping roads,” he said.

A BBMP official, however, thinks the rising vehicular population is creating potholes on the roads. “The city has a high vehicular population which damages the roads,” a BBMP official said.

Go to Top

More from this section
Most trending stories
Photo Gallery
Narendra Modi, Benjamin Netanyahu and his wife Sara during their visit to Sabarmati Ashram...

Narendra Modi, Benjamin Netanyahu and his wife Sara during their visit to Sabarmati Ashram...

Narendra Modi, Benjamin Netanyahu and his wife Sara during their visit to Sabarmati Ashram...

Narendra Modi, Benjamin Netanyahu and his wife Sara during their visit to Sabarmati Ashram...

New recruits of Madras Engineer Group and Centre during a military training demonstration...

New recruits of Madras Engineer Group and Centre during a military training demonstration...

Defence Minister Nirmala Sitharaman waves from the cock-pit of IAF's Sukhoi-30 MKI plane...

Defence Minister Nirmala Sitharaman waves from the cock-pit of IAF's Sukhoi-30 MKI plane...

R Madhavan, Amit Sadh, Sapna Pabbi and Vijay Subramaniamduring the trailer launch...

R Madhavan, Amit Sadh, Sapna Pabbi and Vijay Subramaniamduring the trailer launch...

The newly-raised all women bikers contingent of Border Security Force (BSF) ‘Daredevils' practice...

The newly-raised all women bikers contingent of Border Security Force (BSF) ‘Daredevils' practice...

The newly-raised all women bikers contingent of BSF Daredevils...

The newly-raised all women bikers contingent of BSF Daredevils...

India and Japanese Coast Guard ships participate in a joint naval drill as part of the search...

India and Japanese Coast Guard ships participate in a joint naval drill as part of the search...

Homeless people sharing meal at a pavement in New Delhi...

Homeless people sharing meal at a pavement in New Delhi...

Camel-mounted BSF soldiers participate in a rehearsal for the Beating Retreat ceremony...

Camel-mounted BSF soldiers participate in a rehearsal for the Beating Retreat ceremony...

Like us on Facebook

Copyright 2017, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bengaluru - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523
Powered by Yodasoft Technologies Pvt. Ltd.