Society wants to construct in front of my flat

Did you discuss / give in writing the issue with the society / association ?

If yes and society /association is adamant you should seek permanent and mandatory injunction from jurisdictional civil court through a local prudent lawyer.

You can proceed as suggested by senior expert Dr Vashista Sir. 

The society cannot construct any such structure even if it has the approval of the general body, they have to obain approval from the local civic body.

You can very well raise your objection on the grounds of your easment rights being obstructed. 

You can obtain a stay order by filing a suit for mandatory injunction and permanent injunction against the society on the same gorounds.

I have discussed this multiple times with the secretary they being also "friends".

Have sent a mail day before yesterday formally to the committee explaining my concern and requesting them to remove the point from the general body meeting points as the plan Is illegal and inconveniencing to us. They met me  yesterday but have not given any positive response to resolve the issue . They said the point cannot be removed as per the bye laws now that it is in the notice and has to be discussed since it is already included . Is it so ?

They are discussing the point in the committee and then will revert back . In the mail I asked for written response which i doubt I will receive . Waiting for their decision will update once received.