Refurbishment and alteration of existing office building constructed in the 1970s in London WC2. Original floor slabs constructed in ribbed concrete construction using wood wool permanent shuttering causing serious structural defects to in-situ floor slabs. Drawing, Detailing, Specification and Supervision of removal of wood wool slabs and structural repairs to floors. Specifying load testing of strengthened floors and interpreting results. Surveying external steel stairs identifying defects and scheduling and specifying remedial repairs. Minor alterations to structural layout in core areas.