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Estimation and quantity surveying

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Estimation and quantity surveying

  1. 1. Estimation And Quantity Surveying Presented ByAWANISH SHUKLA Roll No 271303 Branch- ACM Section- IV NATIONAL INSTITUTE OF CONSTRUCTION MANAGEMENT AND RESEARCH
  2. 2. CONTENTS DADO Brief Specification  Detailed Specification  Rate Analysis FLY OVER  Approximate Estimate
  3. 3. Brief Specification for Dado Provide dado on 12 mm thick rough cement plaster (1:3) base and jointed with alkali resisted cement as per IS: 4457 completed as per the direction of Engineer-In-Charge.
  4. 4. Detailed Specification for Dado 1. Materials 2. Preparation of surface & laying 3. Mortar and bedding 4. Fixing tiles for dado 5. Cleaning 6. Pointing and finishing 7. Mode of measurement
  5. 5. MATERIALS  White Glazed Tiles : The tiles shall be of approved and shall     generally conform to IS : 777. They shall be flat and true to shape and free from cracks, blisters, welts, crawling, crazing spots, chipped edges, corners or other imperfections detracting from their appearance. The tiles shall be of square or rectangular of nominal sizes such as 300x200mm, 150x150mm, 100x100mm. Samples of tiles shall be got approved by the Engineer-incharge before use on the work. Top surface of tile shall be glossy or matt as specified.
  6. 6. PREPARATION OF SURFACE & LAYING  Sub grade concrete or RCC slab or side brick wall/ or     plastered surfaces on which tiles are to be laid shall be cleaned, wetted and mopped. The bedding/backing for the tile shall be of C.M. 1.3 or as specified and shall be applied and allowed to harden. The mortar shall be roughened with wire brushes or by scratching diagonal lines 1.5mm. deep at 7.5mm. dado shall be truly horizontal and joints truly vertical. After the tiles have been laid, surplus cement grout shall be cleaned off.
  7. 7. MORTAR AND BEDDING  Cement mortar shall conform to the specification for materials, preparations etc. as specified under cement mortar.  The amount of water added while preparing mortar shall be the minimum necessary to give sufficient plasticity for laying.  Care shall be taken in preparation of the mortar to ensure that there are no hard lumps that would interfere with even bedding of the tiles.  The mortar of specified proportion and thickness shall then be even and smoothly spread over the base by use of screed battens to proper level or slope.
  8. 8. FIXING TILES FOR DADO  The dado work, shall be done only after fixing the tiles/slabs     on the floor. The approved white glazed tiles before laying shall be soaked in water for at least 2 hours. Tiles shall be fixed when the cushioning mortar is still plastic and before it gets very stiff. The back of the tile shall be covered with this layer of cement mortar 1:2 using fine sand (table III, zone IV, I.S. 383-1963) and the edge of the tile smeared with neat white cement slurry. The tile shall then be pressed in the mortar and gently tapped against the wall with a wooden mallet.
  9. 9.  The fixing shall be done from bottom of wall upwards without any       hollows in the bed of joints. Each tile shall be as close as possible to one adjoining. The tiles shall be jointed with white cement slurry. Any thickness difference in the thickness of the tiles shall be arranged out in cushioning mortar so that all tiles faces are in one vertical plane. The top of the dado shall be touched up neatly with the rest of the plaster above. After fixing the dado/skirting etc. they shall be kept continuously wet for 7 days. If doors, windows or other openings are located within the dado area, the corners, sills, jambs etc. shall be provided with true right angles without any specials.
  10. 10. CLEANING  After the tiles have been laid in a room or the days fixing     work is completed, the surplus cement grout that may have come out of the joints shall be cleaned off before it sets. After the complete curing, the dado or skirting over shall be washed thoroughly clean. In the case of flooring, once the floor has set, the floor shall be carefully washed clean and dried. When dry, the floor shall be covered with oil free dry saw dust. It shall be removed only after completion of the construction work and just before the floor is used.
  11. 11. MODE OF MEASUREMENT  Dado/flooring/skirting shall be measured in sqm. correct to two places of decimal.  Length and breadth shall be measured correct to 1 cm.  Between the exposed surfaces of skirting or dado. No deductions shall be made nor extra paid for any opening of area up to 0.1 sqm.  The rate shall include all the cost of labour and materials involved.
  12. 12. Rate Analysis for Dado Rate Analysis for 10 sq-m The quantity of white-glazed tile is worked out by assuming 1 mm on either side for thickness in joint & tolerance in size of tiles. Thus, no of white-gazed tiles = 10/(0.152X0.152) = ~ 432 tiles
  13. 13. Particulars Quantity Or Numbers Rate Per Amounts White Gazed Tiles 432 Nos Rs. 8.00 no Rs. 3456.00 Wastage o white gazed tiles @ 5% Rs. 172.00 C.M. (1:3) for rough plaster, bedding & wastage 0.18 cu m Rs. 2510.00 Cu m Rs. 451.80 White Cement Sundries 0.25 bags Rs. 950.00 bag Rs. 237.50 Rs. 6.90 Material Cost = Rs. 4325.00 Sq m Rs. 1000.00 Labour: Labour for fixing, making rough coat of plaster, filling joints etc 10.00 sq m Rs. 100.00
  14. 14. Labour Cost Add Material Cost = = Rs. 1000.00 Rs. 4325.00 ------------------Total = Rs 5325.00 10% Contractors’ Profit = Rs. 532.50 1.5% Water and electric consumption charges = Rate per 10 sq m Rate per sq m Say Rs. 79.88 -------------------= Rs. 5937.38 = Rs. 593.74 = Rs. 595.00
  15. 15. Approximate Estimate of FLY OVER Examples: National ProjectAt Mohan Nagar Junction in Ghaziabad, India. At Kampthee, Nagpur on NH-7, India At Sirmaur Chauraha Rewa, M.P., India International ProjectAt Junction of Che Kung Road and Hung Mui Road, Honkong.
  16. 16. At Mohan Nagar Junction in Ghaziabad, India  Name of Project  Detail of Client  Details of Contractor : : :  Scope of Work :     Cost of Work : Duration of Work : Details, Project Progress: Resources Used :  New Technology control  Per meter cost Construction of Fly Over National Capital Region Planning Board Asian Development Bank and Wilbur Smith Associates Fly Over with 2 lanes on existing road for 700 meters Rs. 539,160,413.00 2 Years (work started on July 2008) Completed on July 2010 Manpower, Equipments, Machineries : Paver Finisher Hydrostatic with sensor : Rs. 7,70,229
  17. 17. At Kampthee, Nagpur on NH-7, India  Name of Project  Detail of Client  Details of Contractor  Scope of Work       : : : : Cost of Work : Duration of Work : Details, Project Progress: Resources Used : New Technology : Per meter cost : Construction of Fly Over NHAI Oriental Construction Company Pvt. Ltd Backbone Enterprises Fly Over on 850 Meter 2 lane road Rs. 721,122,350.00 2 Years (work started on July 2010) Completed on July 2012 Manpower, Equipments, Machineries Fly Ash was used, Pile foundation was done Rs. 8,48,379.00
  18. 18. At Sirmaur Chauraha Rewa, M.P., India  Name of Project  Detail of Client        : : Details of Contractor : Scope of Work : lane Cost of Work : Duration of Work : Project Progress : Resources Used : Per meter cost Construction of Flyover Bridge at Sirmour Chouraha Rewa on VaranasiNagpur Road, Rewa, MP Public Works Department M.P. Abhay Mishra Comstruction company Fly Over with 750 meters long two Rs. 25 Crors 2 Years (Started on 2012) Under Process Manpower, Equipments, Machineries : Rs. 3,33,333
  19. 19. At Junction of Che Kung Road & Hung Mui Road, Honkong.  Name of Project  Detail of Client : :  Details of Contractor :  Scope of Work  Cost of Work     : : Duration of Work : Details, Project Progress: Resources Used : Per meter cost : Construction of Fly Over Government of the Hong Kong Special Administrative Region HKSAR Construction of approximate 600 metres long dual 2-lane Rs. 537,140,479.00 December 2007 Completion January 2013 Manpower, Equipments, Machineries RS. 8,98,600
  20. 20. Average cost per meter = Rs. 5,37,635
  21. 21. THANK YOU

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