Jorge, many of the certified NDT methods are used as part of weld inspection for building beams and columns, or for inspecting pipes in building HVAC systems. Steel beams, columns, pipes, and conduits are building materials. So it is important for someone more knowledgeable than I to create an application section for inspections of those (both as part of new construction and as part of maintenance and repair), which is why I created two separate "Building Materials" pages. Agree? Barry
Barry, I totally agree, thanks for your collaboration.