Interaction (environment, landscape, architecture, eco-sustainability, energy, systems, structures, technologies, infrastructures, transports, planning) strongly characterize THP activities, which combine professional skills, specific expertise and organization, far beyond the usual engineering companies or any possible occasional pool. THP operates in ISO 9001:2000 quality control; it pools together more than 120 professional people; projects or works in progress by some 5 bill. ; volume of invoice in the last five years some 35 mill. ...
THP since 2003 has pooled together different experts who had been cooperating for over twenty years and faces large scale complex projects through design management procedures.