A new method is developed for collapsing the buildings in such a way that nothing will fly out and everything will get inside only. Similarly, now factory-made precast walls are available. Just bring them and made to stand them in the place you want. Give them the measurement they will precast the wall, bring it and erect it. Similarly, ready-made concrete mixes are available. Your slab can be done in 4 to 5 hours. Like this by doing new inventions the said problems by the author are bing solved to a great extent. Over a period of time, these problems will get solved but some new problems may crop up.