May 2010

Unless tree felling is restricted, our green cover may disappear through greed and ignorance. The GoK enacted the KPTA, 1976, which made permission from the Forest Dept mandatory for felling trees.

According to the Trees Act, trees may only be felled with prior permission of the Forest Dept which has the duty and liability to preserve and protect trees. Anyone (including officials of govt/civic bodies) is subject to criminal prosecution for felling a tree without the required permission.

This requirement of official permission has prevented large scale felling of trees, and has also restrained people and officials from unnecessarily felling trees owing to fear of criminal prosecution. Thus the KPTA thus put a brake on tree felling and helped protect our green cover.

Almost all the 30 species (many major fruit trees) now included for exemption in addition to the earlier 11 constitute the major tree wealth of both rural and urban Karnataka. It'll/It'd devastate bird life and spread pests.

 To expedite the process and make it more cost effective, Delhi Metro Rail Corporation (DMRC) is making use of gigantic 25 metre-long girders to join spans on elevated stretch of the section.

‘‘The cost of construction with the existing 3-meter spans works out to Rs 24 crore per km, while the 25-meter ones cost Rs 19 crore per km. So using the bigger spans will result in a saving of nearly Rs 5 crore per km,’’ said a DMRC official.

It  looks like this..

The bigger spans work out to be more economical and also speed up pace of the construction. Officials said it takes about a week to join the space between two pillars using segmental construction while the bigger spans can be put in place in just one day.