During staged underpinning adjacent to inhabited buildings keyed to alternating pit sequencing, what field control is universally paired with deformation monitoring?
Choices
- (A) Full-depth shear without surveying
- (B) Engineered shoring braces with dial monitoring and Holds if neighbour cracks widen
- (C) Stop surveying once excavation bottoms out arbitrarily
- (D) Stack pallets atop the underpin needle same day arbitrarily
Correct answer: (B)
Engineered shoring braces with dial monitoring and Holds if neighbour cracks widen
Explanation
Monitoring + staged shoring arrests progressive tilt.