tender for patient shade at baragram suswasthya kendra, 1 earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding laterite or sandstone) within a lead of 75 as directed. 2 earth work in filling in foundation trenches or plinth with good earth, in layers not exceeding 150 mm. including watering and ramming etc. layer by layer complete. 3 filling in foundation or plinth by fine sand in layers not exceeding 150 mm as directed and cconsolid-ating the same by thorough saturation with water, ramming complete 4 cement concrete (1:3:6) with graded stone ballast (40 mm size excluding shuttering) in ground floor. 5 ordinary cement concrete (mix 1:1.5:3) with graded stone chips (20 mm nominal size) excluding shutte-ring and reinforcement if any, in ground floor as per relevant is codes.