District schedule rates (DSR), specification of items of work as per PWD
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District schedule rates (DSR), specification of items of work as per PWD, Specification of PCC work, Measurement of work as per IS 1200
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District schedule rates (DSR), specification of items of work as per PWD
- 1. • Presented by: Ms. Ashwini A. Chaudhari • Lecturer, Department of Civil Engineering, R. C. Patel Polytechnic, Shirpur
- 2. Printed Booklet having rates of different works. List of different items of work. Serves as a guide in deciding rates of various items of work. If rates of contractor differs much from DSR rates, his tender may be rejected.
- 3. Lengths shall be measured to the nearest 0.01m. Areas shall be measured to the nearest 0.01m2. Volumes shall be measured to the nearest 0.01m3.
- 4. (A) PCC 1:4:8 for Foundation Concrete: 1. Cement: a) OPC b) Fresh Stock c) If stored for more than 60 days, test before using
- 5. (A) PCC 1:4:8 for Foundation Concrete: 2. Coarse Aggregate: a) Of hard broken stones (about 40mm) b) Free from dust, organic materials c) Well graded d) Lesser voids
- 6. (A) PCC 1:4:8 for Foundation Concrete: 3. Fine Aggregate: a) Of coarse sand (about 4.75 mm) b) Free from dust, organic materials c) Hard, sharp, angular d) In dry condition
- 7. (A) PCC 1:4:8 for Foundation Concrete: 4. Water: a) Clean & Potable b) Free from acidic and alkaline matters c) Free from other impurities
- 8. (A) PCC 1:4:8 for Foundation Concrete: 5. Proportion: a) Must be measured using a Box b) Volume of Box must be equal to volume of 1 bag of cement c) Take 1 bag cement; 4 boxes Fine Aggregate and 8 boxes of Coarse Aggregate
- 9. (A) PCC 1:4:8 for Foundation Concrete: 6. a. Machine Mixing: a) First put Coarse agg. fine agg cement in hopper. b) Let this dry mixture be mixed for at least 4 turns of hopper c) Then add water slowly d) Mix this mixture for at least 2 minutes e) Get a uniform colored and consistent mixture
- 10. (A) PCC 1:4:8 for Foundation Concrete: 6. b. Hand Mixing: a) First dry mix Coarse agg., fine agg., and cement on a smooth platform. b) Slowly add water and mix again. c) Mix shall be turned 3 times in dry condition and 3 times in wet condition. d) It gives you a consistent and workable mixture.
- 11. (A) PCC 1:4:8 for Foundation Concrete: 7. Laying and Compacting: a) Before laying concrete in trench, sprinkle some water b) Concrete is laid slowly in layers not more than 20 cm and compacted before putting another layer c) Before 2nd layer is laid, make top surface of 1st layer rough d) All this process should be free from dust, leaves, earth etc.
- 12. (A) PCC 1:4:8 for Foundation Concrete: 8. Curing: a) Concrete must be kept wet for at least 7 days b) Curing using Gunny Bags or sprinkling water at regular intervals
- 13. (A) PCC 1:4:8 for Foundation Concrete: 9. Measurements: a) Measurement shall be taken in cu.m for finished concrete b) Measurements (Length, Breadth and Depth) shall be accurate up to 0.01m.