Barn: columns and beams!

Barn: columns and beams!  The builders are hard at work today, erecting the steel columns and glulam beams that will hold the weight of the second floor.  For each of the columns they drilled four holes into the concrete floor and set concrete anchors in.  Then they positioned the columns and finger-tightened the nuts on the anchors.  Now they're starting to install the glulam beam sections.  Each time they install one section, they align the column to be perfectly vertical.  For an end section of the beam, they also have to align it perfectly to the frame.  Then it's on to the next section.