Need a house plan

[raasug]

... I got site of 50x60 west facing . If any one have good Duplex  plan plz share . If u know any website where I can get good plans plz suggest ...

Just search for "House plans" in google. You can get plenty.

You can also see the following and get some idea:
https://in.pinterest.com/pin/587579082603783503/

However, before starting the construction, you should consult a qualified and experienced "Civil Engineer". He is a professional and let him make a plan for you. Each site and individuals requirement is different. The professional may charge a small fee. It is worth paying for designing and to supervise the construction.