Which of the below structure doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t require PSC?$

Which of the below structure doesn‚Äö√Ñ√∂‚àö√ë‚à�

1.	Which of the below structure doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t require PSC?$
A.	Bridge
B.	Arch
C.	Dam
D.	Silos
Answer» C. Dam