What are the advantages and disadvantages of post and lintel construction and where can it be seen in architecture today

Post and lintel construction is simple and sturdy.

I see it in the doorways of my house.

http://www.google.com/search?q=post+and+lintel+construction&hl=en&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=kSSrT4T5O4ae2gW95ZSmAg&sqi=2&ved=0CGkQsAQ&biw=711&bih=453

ok for disadvantages i said it lacks tensile strength for stone, and because of the small distances required between the posts. Is that right?

http://www.ehow.com/list_6925727_pros-cons-post-lintel-construction.html

kk ty!

and do you know where the arch and vault construction can be seen in architecture today?

I don't know of any modern construction using the arch and vault, but you may find something here.

http://www.google.com/search?q=arch+and+vault+construction&hl=en&prmd=imvns&source=lnms&tbm=isch&ei=ey-rT_iYEIqQ9QTF8rEa&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CAwQ_AUoAQ&biw=711&bih=453

i saw somewhere, it said its used as the entrance and exit of stadiums..

is that true?

Yes, you're probably right.