(Solved): 11. An excavation is to be made on an historic masonry structure as shown in the figure. Which ...

11. An excavation is to be made on an historic masonry structure as shown in the figure. Which method is least likely to have cause damage to the historic structure? a. Hammer-driven steel sheet piles driven deep into the low permeability soil layer. b. Soldier piles, beams, and lagging with dewatering wells. c. Braced sheeting with dewatering well. d. Slurry walls installed deep into the low-permeability soil layer.