Dr Menkiti has 37 years world-wide experience in geotechnical engineering. He has worked on all sides of the construction supply chain in the UK and abroad. He has expertise in tunnelling, slopes, earthworks, deep excavations, retaining walls, foundation systems, laboratory & field testing, characterisation of granular materials, instrumentation & monitoring, liquefaction risk, bulk cargo instability, seismic design and construction impact mitigation. He has undertaken forensic investigations, provided expert evidence at international hearings and served as Chairman of the British Geotechnical Association. He is a member of ISSMGE TC 206 (Observational Method) and TC 204 (Underground Excavation in Soft Ground).