First thing in the morning we made sure the hole was dry and the pump was good for the welders to start welding. The welders arrived at 8 am, but did not start working until 10 am. We measured for the first I beam. The welders cut the I beam to fit. We set the I beam down in the hole. They welded it in a couple of spots. The cut three spacers to go in between the I beam and the sheet pylon. Started welding on them, did not finish. Measured for the second I beam, then the welders cut it. We set it down in the hole. They spot welded it to hold it in place. The worked 8 to 4; 8 hours. After they left we started digging out for the other two I beams. 