to cn-/e.2oo.ooo Project 102: Retaining Wall Est con The initial contract was signed on October 17, 2010 in the amount of $100,000. The contract called for 1000 linear feet of 8 foot high retaining wall to be erected in a residential subdivision. Excavating and backfill was let to another contractor under separate contract. The estimator determined that the wall would cost $40.00 per linear foot for concrete, $10.00 per linear foot for reinforcing, and $50.00 per linear foot for labor. Average labor cost was $20.00 per hour. The hourly rate included insurances and fringes tied to labor. Overhead and profit markup were included in these unit rates. At the end of 2010 the project was not complete. The schedule indicates that backfilling of the wall would not occur until all wall installation work was complete. The project manager determined 780 linear feet of wall had been installed and 2,150 labor hours were used. It was estimated it would take $30,000 to complete the project requiring an additional 450 labor hours Accounting records as of December 31, 2010 indicated that total expenditures to date were $80,000 of which $70,000 were paid. Progress billings to date were $85,000 and cash collected was $76,500