repair periodical maintenance of winter appliances and allied connected items under aor ge samba-1. old u / s steel tank of any capacity obtained from item no- 2, 3 & 4. 2. old u / s siphon assembly of any size obtained from item no- 5, 6 & 7. 3. old u / s thermostat any type ( geyser ) obtained from item no- 8. 4. old u / s heating element of any capacity obtained from item no- 9, 10, 30 & 31. 5. old u / s outer body of any capacity obtained from item no- 11, 12 & 13. 6. old u / s pvc wire of any capacity obtained from item no- 16 & 36. 7. old u / s sheet metal enclosure box of any capacity obtained from item no- 17. 8. old u / s pvc connection of any capacity obtained from item no- 19 & 20. 9. old u / s pressure release valve of any capacity obtained from item no- 21. 10. old u / s non return valve of any capacity obtained from item no- 22. 11. old u / s bib tap & gate valve of any capacity obtained from item no- 23, 24 & 32. 12. old u / s anchor bolt of any capacity obtained from item no- 25. 13. old u / s plug top of any capacity obtained from item no- 26. 14. old u / s bottom cover plate of any capacity obtained from item no- 27. 15. old u / s pvc float valve of any capacity obtained from item no- 35, 38 & 39. 16. old u / s gi pipe of 15 mm capacity obtained from item no- 33. 17. old u / s mcb of any capacity obtained from item no- 37. 18. old u / s earthing of any capacity obtained from item no- 40. 19. old u / s tube collector of any capacity obtained from item no- 29. 20. old u / s pvc water tank 300 ltr capacity obtained from item no- 38. 21. old u / s pvc water tank 500 ltr capacity obtained from item no- 391 bricks 2. coarse aggregate 3. fine aggregate5. structural concrete ( m- 15 grade ) and above 6. ( a ) pcc block for walling ( hollow ) ( b ) pcc solid 7. cement flooring glazed / terrazzo tiles 8. burnt clay roofing tiles ( is: 2690 part-ii ) length 150 mm to 250 mm width 100mm to 200mm thickness 35mm to 50mm 9. mangalore pattern roofing tiles 10. timber 11. water construction purpose 12 welding of steel work 13. timber / panelled door / window shutters ( incl ) factory made shutters ) 14. plywood ( is:303-1989 15. wood particle board ( medium density ) ( is : 3087 -1985 ) 16 reinforceme nt steel ( is- 1786 )