Reinforced and prestressed concrete truss generally used for spans ranging from ___________
A. 18 to 36m
B. 14 to 30m
C. 20 to 30m
D. 11 to 19m
Answer:A
Reinforced and prestressed concrete truss generally used for spans ranging from ___________
A. 18 to 36m B. 14 to 30m C. 20 to 30m D. 11 to 19m