The approximate depth of a vertical open excavation without bracing and spalling in soft clays is about -
(a) 1 to 1.5 m
(b) 1.5 to 3.0 m
(c) 3.0 to 5 m
(d) 5 to 7 m.
The correct Answer Is
(b) 1.5 to 3.0 m
(a) 1 to 1.5 m
(b) 1.5 to 3.0 m
(c) 3.0 to 5 m
(d) 5 to 7 m.
The correct Answer Is
(b) 1.5 to 3.0 m