Prepare preliminary estimate of a building project with a total plinth are of all building of 1400 Sq. M. Given- i) Plinth area rate = Rs. 3800/- per Sq. M. Special architectural treatment = 1.5% of the building cost. Water supply and sanitary installations = 5% of the building cost. Internal installations = 14% of building cost. Other services = 6% of the building cost. Contingencies = 3% (iii) (iv) (v) (vi) (vii) Supervision charges = 8%