His main appointments are:
Management Board Member of T.R.E. (Technologies for Building Recovery) Research Authority. The T.R.E. Research Authority is a public/private authority composed by ENEA, University of Naples and private companies dealing with the research activity applied in the field of innovative technologies for structural recovery and seismic protection of real estates.
Vice-coordinator of the Regional Authority AMRA, the Centre for Analysis and Monitoring of Environmental Risks. AMRA is a Research Centre in which 11 subjects are involved among universities and research centres; it deals with the activity research in the field of environmental risks both of natural (seismical, volcanological, hydrogeological) and anthropical (water, air and ground pollution) kind.
Executive Board Member of the National Academic Authority ReLuis (Network of Seismic Engineering Experimental Laboratory). ReLuis is a research authority gathering the main national laboratory working in the field of seismic experimental tests on big structures under the shield of the National Civil Protection Department.
Management Board Member of IMAST – Engineering Precinct on polymer materials, composites and structures. IMAST is a research company working in the field of innovative composite materials applied to many areas, from aerospace to naval, from biomedical to civil, from transport to electronical. Private partners of this company are great high technology firms, such as Alenia, Fincantieri, ST Microelectronics, FIAT Elasis, Bracco-Esaote.
Executive Board Member of the “Structural Composites for Innovative Applications” Centre of Excellence of Naples University Federico II. This Centre of Excellence has been selected by The Ministry of Scientifical Research following a national contest and it deals with the basic research aiming to discover new materials able to reinforce buildings and infrastructures.
FIB (Federation Internationalle du Beton) member. As italian representative, he joined the drawing up of the Guidelines for composites utilization in reinforcement of concrete structures.
ISO International Standard Organization member. As italian representative, he joined the drawing up of the Test Conditions Regulations for composite materials in concrete structures.
Member of many international organizations, among which Earthquake Engineering Research Institute and American Concrete Institute.
ASCE (American Society of Civil Engineering) Journal of Composites for Costructions Editorial Board member and editorial reviser for several international scientifical journals, among which: Journal of Earthquake Engineering, Computer and Structures, Structural Engineering and Mechanics, Earthquake Spectra, Earthquake Engineering and Structural Dynamics, ACI Structural Journal.

His researches started, together with Edoardo Cosenza’s, in 1994 at University of Naples laboratory, one of the very first research centres worldwide, and are increased during the last years involving the most various applications (reinforced concrete buildings undergoing seismic actions, reinforced bridge decks, reinforced tuff masonry buildings, reinforced monuments, etc.) and cooperations with many centres in Europe, USA and Japan.
Between 1997 and 2002 Gaetano Manfredi contributed in writing the first European Regulation about the use of composites materials in civil engineering.
In 2002 he coordinated the first world seismic test on a three floors real scale building reinforced with carbon fibers, at the European Community Joint Research Cente. This purposely constructed building underwent a destructive earthquake equal to 1/5 the Irpinia earthquake and showed a very positive behaviour.
These days he is testing the latest generation materials for seismic reinforcement of concrete structures: hardwire steel fibers, which allow structures extraordinary performances.
In the meantime, researches about using of innovative materials in monuments protection are developing, in order to guarantee the reversibility and durability of interventions. In 2002 he successfully tested the application of titanium belts for temporary protection of some columns of Temple C in Selinunte archaeological site.