#1. Pre-demolition structural survey
A real expert reverse-engineers the structure — column grid, slab spans, post-tensioning, lateral system — and produces a sequence drawing approved by a structural engineer before mobilisation.
#2. Top-down methodology
For G+5 and above, top-down removes floor-by-floor with the roof slab cut into segments, lowered, and broken on grade. Long-reach (28–35 m) excavators handle from the perimeter without working on the deck.
#3. High-reach demolition envelope
Long-reach machines have a published stability envelope. Structural experts plan exclusion zones, wind cut-offs, and machine setup levels to stay inside it — and stop work when conditions move outside.
#4. Temporary propping & load transfer
When a column or slab is removed below an existing structure, temporary propping carries the loads. Structural demolition experts engineer the propping with the same rigour as new construction temporary works.
#5. Vibration & monitoring
Adjacent structures dictate the cutting method. Diamond cutting and wire sawing replace breakers where vibration limits are tight. Real-time monitoring with thresholds tied to the structural engineer's letter is standard.
#6. USF structural credentials
28-building foundation works, multiple G+8 to G+12 top-down projects, in-house engineering check on every sequence. Method statements available on request.