Safer, faster, easier inspection
DTI save cost on inspectionSeveral independent studies have conclusively shown that DTIs can save far more than their up front cost in time spent on inspection.
A study conduced on the Mellon Bank building adjacent to the PPG building for inspection costs of bolts, proved that the inspecting agency, PSI charged the PPG owner much less for inspecting the DTIs than the DTIs cost in the first place. This was compared to inspecting with no DTIs on the adjacent Mellon bank structure.
An earlier study by Bethlehem Steel found a great savings on inspection an adjacent Power Plant with DTIs in Nebraska compared to the older one without DTIs.
Some DOTs explain they do not need continuous inspection on bridges. One person can return at any time after construction to easily see the bolts were properly installed.