The discrepancy between the 75 and the 81 and 87 percent may be variability, some partial tee beam
action affecting the moment of inertia, or some damping from load sharing with adjacent joists.
And, in June 2016 NHI piloted two additional virtual bridges--a steel truss bridge over a railroad and a concrete tee beam
bridge--in its in-service bridge inspection course.
Legacy Precast's initial production phase centers on parking structures: three beds for double or inverted tee beam
, column and spandrel, ramp and shear wall and stair fabrication.
The column haunches support precast Tee beams
on 9-ft centers forming a two-dimensional frame running east to west.