Our project includes a geothermal system. When calculating the total material cost I wonder in which division of the CSI masterformat should the cost of this system be accounted for. The installation of the thermal system consists of drilling the holes, filling them up with some special concrete type material and then putting in tubes. If I understand correctly the cost of the materials needed should not be counted in the calculation of the total material cost. Can anyone confirm in which CSI category these activities are to be placed and consequently if they count for the calculation of the total material cost?