Work Methods and Engineering Documentation

A demolition is a construction run backwards. We write the sequence, determine what must be supported before each removal, and verify stability in the intermediate states — the ones nobody calculated in the original design.

Erection procedures, temporary supports required at each stage, bridge girder placement plans and stripping methods. Edge-girder rotation analysis addresses the torsion that appears when the deck is poured asymmetrically.

Flexible or rigid lifelines, single-point anchors, travel restraint. Fall-distance analysis brings it together: sub-system length, energy-absorber elongation, lifeline sag and the clearance actually available below the worker.