The Prestressed concrete compression members should have a minimum average effective prestress of not less than:

The Prestressed concrete compression members should have a minimum ave

1.	The Prestressed concrete compression members should have a minimum average effective prestress of not less than:
A.	1.55n/mm<sup>2</sup>
B.	1.0n/mm<sup>2</sup>
C.	1.15n/mm<sup>2</sup>
D.	1.25n/mm<sup>2</sup>
Answer» B. 1.0n/mm<sup>2</sup>