Estimate Brick, Cement and Sand for Brickwork (brickwork) Estimate Gravel, Cement and Sand for Plain Cement Concrete work (ccwork) Estimate Cement and Sand for Plaster work (plaster) Irregular Land Area, Coordinates Known (irg_land) Irregular Land Area by Triangulation (irg_land2) Irregular Land Area from Image (irg_landimg) Rectangular Land Area (rectland)