For walls more than 6 m in height, thickness of retaining wall at the bottom is equal to 0.4 times the height plus
A. 10 cm
B. 20 cm
C. 30 cm
D. 40 cm
Answer:C
For walls more than 6 m in height, thickness of retaining wall at the bottom is equal to 0.4 times the height plus
A. 10 cm B. 20 cm C. 30 cm D. 40 cm