Helipads

Wandering around Sharjah, I have noticed that almost all the highrise blocks (luxury or otherwise) have helipads on the rooves. But I have yet to see a single helicopter land on one, and given how close some of the different sized blocks are to eachother, one wonders whether all the helipads are actually accessible.
When I quizzed a work colleague, he pointed out they were for rescue situations should a block catch fire..........the only problem being is there is no rescue helicopter service in Sharjah.....mmh........