d ÀA À ÀÆä E ÁS É WATER RESOURCES DEPARTMENT CHAPTER- WRD: 3 SCHEDULE OF RATES CANAL AND ALLIED WORKS FOR THE YEAR : 2016-17 CONTENTS PAGES REFERENCE DATA 1 -- 3 NOTES ON BASIC RATES 4 -- 4 DATA FOR SCHEDULE OF RATES 5 -- 167 DATA FOR ENABLING WORKS 168--170 z Àg À ÀnÖ À«Äw ÄAz À Àjµ ÀÌj À ànöz É FINILISED BY SCHEDULE OF RATES COMMITTEE
CANAL AND ALLIED WORKS - REFERENCE DATA FOR THE YEAR: 2016-17 COST OF MATERIALS : 1 Air hose 25 mm dia per Rm `: 201.00 2 Air hose 50 mm dia per Rm `: 271.00 3 Asphalt 80 / 100 and 85 / 25 Gr per kg `: 54.00 4 Binding wire per kg `: 61.00 5 Cement per kg `: 7.20 6 Coarse aggregate 10-4.75 mm per cum ( at quarry ) `: 1400.00 7 Coarse aggregate 20-10 mm per cum ( at quarry ) `: 1145.00 8 Coarse aggregate 40-20 mm per cum ( at quarry ) `: 885.00 9 Curing Compound per ltr `: 142.00 10 D - cord per Rm `: 10.00 11 Detonating fuse coil per Rm `: 10.00 14 Detonator delay type per No. `: 22.00 15 Detonator electric per No. `: 13.00 16 Detonator ordinary per No. `: 7.00 17 Diesel oil per ltr `: 58.00 18 Empty cement bags per No. `: 3.00 19 Explosive ANFO high strength booster per kg `: 71.00 20 Explosive ANFO per kg `: 56.00 21 Explosive small dia.( Kelvex-220 ) per kg `: 63.00 22 Extension rod with coupling sleeve per Rm `: 4200.00 23 Filter fabric 200 gsm per sqm `: 242.50 24 Filter fabric 250 gsm per sqm `: 275.00 25 Fine aggregate / Sand per cum ( Un-screened at quarry ) `: 665.00 26 Fine aggregate per cum ( Screened at quarry ) `: 790.00 27 G I pipe 50 mm dia A class per Rm `: 308.00 28 Jack hammer Drill rod 1.5 m length per No. `: 4406.00 29 LDPE sheet 500 micron thick per sqm `: 119.00 30 LDPE sheet 750 micron thick per sqm `: 198.00 31 LDPE sheet 1000 micron thick per sqm `: 232.00 32 Murum per cum ( at quarry ) `: 155.00 33 Paving Cylinder per Each `: 27870.00 34 PVC sealing strip per Rm `: 49.00 35 Reinforcement steel per kg `: 40.55 36 Rough stone 200 x 200 x 750 mm per No. ( at quarry ) `: 22.00 37 Shahabad stone slab per sqm `: 303.00 38 Shutter oil per ltr `: 35.00 39 Size stone 150-200 mm height per No. ( at quarry ) `: 12.00 40 Size stone 200-250 mm height per No. ( at quarry ) `: 13.00 41 Size stone 250-300 mm height per No. ( at quarry ) `: 17.00 42 Stone chips per cum ( at dump yard ) `: 400.00 43 Stone chips per cum ( at quarry ) `: 520.00 44 Structural steel angle / beam / channel / bar per kg `: 41.55 45 Structural steel plate / flat per kg `: 42.05 45 Super Plasticiser per ltr `: 119.00 47 Tarfelt jointer filler board 12 mm thick per sqm `: 434.00 48 Tarfelt jointer filler board 20 mm thick per sqm `: 698.00 1
49 T.C Cross bit 100 mm dia per No. `: 12215.00 50 Through stone 200 x 200 x 300 mm per No. ( at quarry ) `: 19.00 51 Through stones 250 x 250 x 450 mm per No. ( at quarry ) `: 24.00 52 Turfing sods per sqm `: 28.00 53 Un-coursed rubble stones per cum ( at dump yard ) `: 335.00 54 Un-coursed rubble stones per cum ( at quarry ) `: 420.00 55 Wire mesh 50 x 50 mm 20 guage per sqm `: 245.50 LEAD CHARGES FOR 1 km REHANDLING LEAD: Unloading 1 Earth/ Sand `: 53.30 85.80 14.00 2 Stone/ Coarse aggregates `: 76.50 101.40 50.70 3 Cement `: 60.30 93.40 93.40 4 Reinforcement steel `: 60.30 93.40 93.40 ROYALTY CHARGES: Per tonne 1 Earth / Soil / Murum `: 20.00 2 Stone / Coarse aggregate `: 60.00 3 Fine aggregate / Sand `: 60.00 HIRE CHARGES OF MACHINERY : Hire charge Crew charge 1 Air compressor 8.5 cmm ( diesel ) / hour `: 223.00 897.00 138.00 2 Angle dozer 90 hp per hour `: 1276.00 614.00 146.00 3 Batching plant 15 cum / hr rated capacity `: 335.00 322.00 207.00 4 Concrete hand mixer 45 / 30 ltr per hour `: 11.00 6.00 --- 5 Concrete mixer 300 / 200 ( diesel ) / hour `: 46.00 80.00 144.00 6 Concrete mixer 600 / 400 ( diesel ) / hour `: 93.00 160.00 144.00 7 Diesel generating set 30 KVA per hour `: 66.00 638.00 86.00 8 Diesel generating set 50 KVA per hour `: 104.00 957.00 86.00 9 Diesel road roller per hour `: 252.00 718.00 138.00 10 Jack hammer per hour `: 16.00 9.00 215.00 11 Mechanical concrete paver per hour `: 312.00 30.00 276.00 12 Needle Vibrator 40 mm ( petrol ) per hour `: 9.00 20.00 103.00 13 Pump 5 hp ( diesel ) per hour `: 7.00 80.00 69.00 14 Shovel 0.85 cum per hour `: 1326.00 877.00 146.00 15 Shovel 0.50 cum per hour `: 801.00 479.00 146.00 16 Tipper 5 cum per hour `: 309.00 301.00 108.00 17 Transit mixer 2 cum per hour `: 709.00 877.00 173.00 18 Vibratory pad foot roller per hour `: 1249.00 1037.00 173.00 19 Waggon drill per hour `: 239.00 15.00 172.00 20 Water tanker per hour `: 306.00 301.00 108.00 WAGES OF WORKERS Per day 1 Bar bender `: 291.67 2 Blaster ( Licensed ) `: 278.17 3 Carpentor Class II `: 279.17 4 Cartman with double bullock cart `: 313.17 5 Crowbarman `: 274.67 6 Electrician `: 276.17 7 Helper blasting `: 274.67 8 Maistry `: 276.17 2 1 km lead Loading Fuel charge
9 Mason Class I `: 291.67 10 Mason Class II `: 279.17 11 Mazdoor heavy `: 273.67 12 Mazdoor light `: 272.17 13 Mechanic / Fitter / Welder `: 289.67 14 Pipe fitter `: 284.17 15 Rollerman with bullock roller `: 313.17 16 Stone breaker `: 276.67 17 Stone chiseller Cl- I `: 279.67 18 Stone chiseller Cl- II `: 276.67 OTHER DATA : 1 Contractor's Overheads on Materials / Machinery / Labour % 5.00 2 Contractor's Profit on Materials / Fuel & Energy charges / Labour % 10.00 3 Hidden cost on Labour % 15.00 4 Rate of interest per annum % 11.00 5 Small Tools & Plant on Materials / Machinery / Labour % 1.00 6 Structural steel fabrication per kg `: 18.00 7 Sundries ( lumpsum rate for unquantified inputs ) `: 45.00 8 Cost of Other enabling works ( as per Annexure-1 at the end ) % 1.00 3
NOTES ON SCHEDULE OF RATES CANAL AND ALLIED WORKS FOR THE YEAR : 2016-17 1. All notes under ' General Notes on Schedule of Rates ' and Notes on Lead, Lift, Loading and un-loading Charges are applicable to Canal and Allied Works also to the extent they are relevant. 2. Unless otherwise specified the basic rates are inclusive of all lifts. 3. For earth / rockfill embankment works 1 km initial lead is considered in the basic rates. As no storing / stacking and re-handling of materials is involved for these works lead charges for additional lead shall be worked out for total lead including initial lead of 1 km and then the cost of first km lead shall be deducted. No loading and un-loading charges shall be added as the additional lead does not involve re-handling of materials. Example : Total lead for soil from approved borrow area : 2 km Initial lead included in the basic rate in the SR : 1 km Additional lead charges : Lead charges for 2 km `: 64.20 Less Lead charges for 1 km `: -53.30 Additional lead charges `: 10.90 No loading and un-loading charges shall be added. 4. Cement content specified for cement concrete works in the item description is based on theoritical design mix computations and is exclusive of wastage and requirement for any incidentals. The actual cement content may vary based on trial mix studies. A suitable clause shall be included in the tender for regulating payment for any upward or downward variation in cement content. 5. A weightage of 25 percent over the rates in the SR is permissible for all items of works involved in the modernization of canals and which are to be carried out during the canal closure period of about 3-4 months and less. In the estimates for modernization, the items of work shall appear based on the rate in SR without the permissible weightage. Below the respective items, the weightage permissible for the item is to be included. Further, the payment of weighatage is permissible only when the contractor completes a minimum of 90 percent of the work entrusted in a single closure period. Failing which the contractor foregoes the advantage of weightage. Payment of RA bills shall be made at rates excluding the weightage. It is only in the last RA bill / final bill, payment for weightage is to be released subject to above condition. 6. The quantities of materials including wastage, requirements for incidentals etc., for working out additional lead charges shall be as per the statement of requirement of materials under this section. 4
CANAL AND ALLIED WORKS - DATA RATES SECTION: CANAL AND ALLIED WORKS. YEAR : 2016-17 ITEM No: WRD: 3.1 ITEM: Excavation in all kinds of soil including boulders upto 0.6 m diameter ( 0.113 cum) for canal, seating of embankment, filter drains / catch water drains etc., and placing the excavated stuff neatly in dump area or for formation of service road / embankment as directed including cost of all materials, machinery, labour, dressing bed and sides to required level and profile etc., complete with lead upto 1 km and depth of cut upto 18 m. DATA:Capacity of shovel bucket Capacity of shovel bucket under heaped condition Capacity of tipper Lead for disposal of excavated soil Speed for loaded tipper under canal excavation condition Speed for empty tipper under canal excavation condition Turning and unloading time Shovel digging and loading cycle per bucket : 0.85 cum : 1.00 cum : 5.00 cum : Upto 1 km : 15 km / hr : 15 km / hr : 2.00 min : 20 sec 1. Quantity of excavation : In-situ quantity / bucket for 20 % bulkage on unloading ( 1 /1.20 ) : 0.83 cum In-situ quantity per load for 20 % bulkage of soil ( 5 /1.2 ) : 4.16 cum Number of buckets per load ( 4.16 / 0.83 ) say : 5 buckets Corrected Quantity of in-situ soil per load ( 5 x 0.83 ) say : 4.16 cum Ideal cycle time for loading 5 buckets ( 5 x 20 / 60 ) : 1.67 min The ideal cycle time for shovel requires spotting of a tipper within 1.67 minutes near the shovel. However, in practice for canal excavation the space available may not permit positioning of the tippers on either side of the shovel. Generally, one tipper has to move after loading to position the next tipper for loading. Assuming one cycle time extra the corrected cycle time for the shovel will be : ( 6 x 20 / 60 ) : 2.00 min Round trip cycle time for tipper: Corrected cycle time of shovel for digging & loading : 2.00 min Time for ( av ) 0.75 km haulage under load ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and un-loading : 2.00 min Time for ( av ) 0.75 km return trip ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and spotting : 0.50 min Total : 10.50 min No.of tippers to match corrected cycle time of shovel ( 10.50/ 2.00 ) : 5.25 Nos Output of tipper / hr with 50 min working / hr ( 50 x 4.16 / 10.50 ) : 19.80 cum Output for 5 tippers per day ( 5 x 19.80 x 8 ) : 792 cum Further, assuming about 90 percent of excavation by deploying shovel and about 10 percent excavation mainly for trimming the canal to final profile by manual labour the daily progress of excavation will be : ( 792 / 0.9 ) say : 880 cum Consider 880 cum for rate analysis. 2. Requirement of materials: No materials involved in the work. 3. Requirement of machinery : Deploy 0.85 cum capacity shovel for 8 hours for digging and loading 792 cum insitu soil. Deploy 5 tippers of 5 cum capacity for 8 hours for disposal of 792 cum insitu soil. 5
4. Requirement of workforce ( other than machinery crew ) : Average output of 1 heavy & 1 light mazdoor assumed at 5 cum / day for trimming and disposal. Deploy 18 heavy and 18 light mazdoors for trimming and disposal of 88 cum soil. Deploy 1 maistry. RATE ANALYSIS UNIT : 880.00 cum A. MATERIALS: Sl No Perticulars in `. in `. 1 NIL 0.00 0.00 0.00 0.00 0.00 0.00 Total `: 0.00 Add for small Tools and Plants @ 1% `: 0.00 Add for Contractor's Profit @ 10% `: 0.00 Add for Contractor's Overheads @ 5% `: 0.00 Total cost of Materials : `: 0.00 B. MACHINERY: in `. in `. 1 Shovel 0.85 cum capacity Hour 8.00 1326.00 10608.00 Fuel / Energy charges Hour 8.00 877.00 7016.00 2 Tippers 5 cum capacity ( 5 ) Nos Hour 40.00 309.00 12360.00 Fuel / Energy charges Hour 40.00 301.00 12040.00 Total `: 42024.00 Add for small Tools and Plants @ 1% `: 420.24 Add for Contractor's Profit on DPOL / Energy @ 10% `: 1905.60 Add for Contractor's Overheads @ 5% `: 2101.20 Total hire charges of Machinery : `: 46451.04 C. LABOUR: 1 Crew for Shovel Hour 8.00 146.00 1168.00 2 Crew for Tipper Hour 40.00 108.00 4320.00 3 Maistry Day 1.00 276.17 276.17 4 Heavy mazdoor Day 18.00 273.67 4925.97 5 Light mazdoor Day 18.00 272.17 4898.97 Total `: 15589.11 Add for small Tools and Plants @ 1% `: 155.89 Add for Contractor's Profit @ 10% `: 1558.91 Add for hidden cost on Labour @ 15% `: 2338.37 Add for Contractor's Overheads @ 5% `: 779.46 Total cost of Labour : `: 20421.73 ABSTRACT: A. Cost of Materials `: 0.00 B. Hire charges of Machinery `: 46451.04 C. Cost of Labour `: 20421.73 TOTAL `: 66872.77 6
Add for other enabling works @ 1.00% `: 668.73 Total cost for 880.00 cum `: 67541.50 Rate per cum `: 76.75 Rate approved per cum `: 77.00 Note: For depth of cut exceeding 18 m from ground level increase the basic rate by 5 percent for the quantity of excavation beyond 18 m depth. SECTION: CANAL AND ALLIED WORKS. YEAR : 2016-17 ITEM No: WRD: 3.2 ITEM: Excavation in all kinds of soil including boulders upto 0.60 m diameter ( 0.113 cum ) for field channels, seating of embankment for field channels and placing the excavated stuff neatly for formation of service road / field channel embankment as directed including cost of all materials, machinery, labour, dressing bed and sides to required level and profile etc., complete with lead upto 10 m and lift upto 2 m. DATA:Capacity of shovel bucket : 0.50 cum Capacity of shovel bucket under heaped condition : 0.57 cum Lead for disposal of excavated soil : Upto 10 m In view of shallow depth of digging for field channels the cycle time for digging and disposal by shovel is assumed at 1.5 times the cycle time considered for canal. Shovel digging and loading cycle per bucket ( 1.5 x 20 ) : 30 sec 1. Quantity of excavation : In-situ qty / bucket for 15 % bulkage of soil ( 0.57 / 1.15 ) : 0.50 cum Output of shovel with 50 min./ hr working ( 50 x 60 x 0.5 / 30 ) : 50 cum / hr Daily output of excavation ( 8 x 50 ) : 400 cum As the excavated soil is dumped by the side of field channel within the reach of shovel boom no tippers are considered in the rate analysis for disposal of excavated soil. Further, assuming about 90 percent of excavation by deploying shovel and about 10 percent excavation mainly for trimming bed and sides of channels / trenches to final profile by manual labour, the daily output will be : ( 400 / 0.90 ) say : 445 cum Consider 445 cum for rate analysis. 2. Requirement of materials: No materials involved in the work. 3. Requirement of machinery : Deploy 0.5 cum capacity shovel for 8 hours for digging and loading 400 cum. 4. Requirement of workforce ( other than machinery crew ) : Average output of 1 heavy & 1 light mazdoor assumed at 5 cum / day for trimming and disposal. Deploy 9 heavy and 9 light mazdoors for trimming and disposing 45 cum soil. Deploy 1 maistry. RATE ANALYSIS UNIT : 445.00 cum A. MATERIALS: Sl No Perticulars 1 NIL 0.00 0.00 0.00 0.00 0.00 0.00 Total `: 0.00 Contd 7
A. MATERIALS ( Contd ) : Sl No Perticulars Contd Add for small Tools and Plants @ 1% `: 0.00 Add for Contractor's Profit @ 10% `: 0.00 Add for Contractor's Overheads @ 5% `: 0.00 Total cost of Materials : `: 0.00 B. MACHINERY: 1 Shovel 0.50 cum capacity Hour 8.00 801.00 6408.00 Fuel / Energy charges Hour 8.00 479.00 3832.00 Total `: 10240.00 Add for small Tools and Plants @ 1% `: 102.40 Add for Contractor's Profit on DPOL / Energy @ 10% `: 383.20 Add for Contractor's Overheads @ 5% `: 512.00 Total hire charges of Machinery : `: 11237.60 C. LABOUR: 1 Crew for Shovel Hour 8.00 146.00 1168.00 2 Maistry Day 1.00 276.17 276.17 3 Heavy mazdoor Day 9.00 273.67 2462.99 4 Light mazdoor Day 9.00 272.17 2449.49 Total `: 6356.64 Add for small Tools and Plants @ 1% `: 63.57 Add for Contractor's Profit @ 10% `: 635.66 Add for hidden cost on Labour @ 15% `: 953.50 Add for Contractor's Overheads @ 5% `: 317.83 Total cost of Labour : `: 8327.19 ABSTRACT: A. Cost of Materials `: 0.00 B. Hire charges of Machinery `: 11237.60 C. Cost of Labour `: 8327.19 TOTAL `: 19564.79 Add for other enabling works @ 1.00% `: 195.65 Total cost for 445.00 cum `: 19760.44 Rate per cum `: 44.41 Rate approved per cum `: 44.00 SECTION: CANAL AND ALLIED WORKS. YEAR : 2016-17 ITEM No: WRD: 3.3 ITEM: Excavation in soft rock without blasting including boulders upto 0.6 m diameter ( 0.113 cum ) for canal, seating of embankment, filter drain / catch water drains etc., and placing the excavated soft rock neatly in dump area or for formation of service road as directed including cost of all materials, machinery,labour, dressing bed and sides to required level and profile etc., 8
complete with lead upto 1 km and depth of cut upto 18 m. DATA:Capacity of shovel bucket Capacity of shovel bucket under heaped condition Capacity of tipper Lead for disposal of excavated soft rock Speed for loaded tipper under canal excavation condition Speed for empty tipper under canal excavation condition Turning and unloading time Shovel digging and loading cycle per bucket : 0.85 cum : 1.00 cum : 5.00 cum : Upto 1 km : 15 km / hr : 15 km / hr : 2.00 min : 30 sec 1. Quantity of excavation : In-situ qty / bucket for 30 % bulkage on unloading : 0.77 cum In-situ quantity / load for 5 cum of soft rock ( 5 / 1.30 ) : 3.85 cum Number of buckets per load ( 3.85 / 0.77 ) say : 5 buckets Ideal cycle time for loading 5 buckets ( 5 x 30 / 60 ) : 2.50 min The ideal cycle time for shovel requires spotting of a tipper within 2.50 minutes near the shovel. However, in practice for dam or canal excavation the space available may not permit positioning of tippers on either side of the shovel. Generally one tipper has to move after loading to position the next tipper for loading. Assuming one cycle time extra the corrected cycle time for digging and loading one tipper by shovel will be : ( 6 x 30 / 60 ) 3.00 min Round trip cycle time for tipper: Corrected cycle time of shovel for digging & loading : 3.00 min Time for ( av ) 0.75km haulage under load ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and un-loading : 2.00 min Time for average 0.75 km return trip ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and spotting : 0.50 min Total : 11.50 min No.of tippers to match corrected cycle time of shovel ( 11.50/ 3.00 ) say : 3.83 Nos Output of tipper / hr with 50 min working / hr ( 50 x 3.85 / 11.50 ) : 16.74 cum Output for 4 tippers per day ( 3.83 x 16.74 x 8 ) say : 513 cum Further, assuming about 90 percent of excavation by deploying shovel and about 10 percent excavation mainly for trimming of bed / sides to final profile by manual labour the daily output will be : ( 513 / 0.9 ) say : 570 cum Consider 570 cum for rate analysis. 2. Requirement of materials: No materials involved in the work. 3. Requirement of machinery : Deploy 0.85 cum capacity shovel for 8 hours for digging and loading 513 cum. Deploy 4 tippers of 5 cum capacity for disposal of 513 cum. 4. Requirement of workforce ( other than machinery crew ) : Output of 1crowbarman, 1 heavy and 1 light mazdoor assumed at 5 cum per day for trimming. Deploy 11 heavy and 11 light mazdoors for trimming and disposal of 57 cum soft rock. Deploy 11 crowbarman for trimming. Deploy 1 maistry. 9
RATE ANALYSIS UNIT : 570.00 cum A. MATERIALS: Sl No Perticulars 1 NIL 0.00 0.00 0.00 0.00 0.00 0.00 Total `: 0.00 Add for small Tools and Plants @ 1% `: 0.00 Add for Contractor's Profit @ 10% `: 0.00 Add for Contractor's Overheads @ 5% `: 0.00 Total cost of Materials : `: 0.00 B. MACHINERY: 1 Shovel 0.85 cum capacity Hour 8.00 1326.00 10608.00 Fuel / Energy charges Hour 8.00 877.00 7016.00 2 Tippers 5 cum capacity ( 4 ) Nos Hour 32.00 309.00 9888.00 Fuel / Energy charges Hour 32.00 301.00 9632.00 Total `: 37144.00 Add for small Tools and Plants @ 1% `: 371.44 Add for Contractor's Profit on DPOL / Energy @ 10% `: 1664.80 Add for Contractor's Overheads @ 5% `: 1857.20 Total hire charges of Machinery : `: 41037.44 C. LABOUR: 1 Crew for Shovel Hour 8.00 146.00 1168.00 2 Crew for Tipper Hour 32.00 108.00 3456.00 3 Maistry Day 1.00 276.17 276.17 4 Crowbarman Day 11.00 274.67 3021.32 5 Heavy mazdoor Day 11.00 273.67 3010.32 6 Light mazdoor Day 11.00 272.17 2993.82 Total `: 13925.61 Add for small Tools and Plants @ 1% `: 139.26 Add for Contractor's Profit @ 10% `: 1392.56 Add for hidden cost on Labour @ 15% `: 2088.84 Add for Contractor's Overheads @ 5% `: 696.28 Total cost of Labour : `: 18242.55 ABSTRACT: A. Cost of Materials `: 0.00 B. Hire charges of Machinery `: 41037.44 C. Cost of Labour `: 18242.55 TOTAL `: 59279.99 Add for other enabling works @ 1.00% `: 592.80 Total cost for 570.00 cum `: 59872.79 Rate per cum `: 105.04 Rate approved per cum `: 105.00 10
Note: For depth of cut exceeding 18 m from ground level increase the basic rate by 5 percent for the quantity of excavation beyond 18 m depth. SECTION: CANAL AND ALLIED WORKS. YEAR : 2016-17 ITEM No: WRD: 3.4 ITEM: Excavation in soft rock without blasting including boulders upto 0..6 m diameter ( 0..113 cum) for field channels, seating of embankment for field channels etc., and placing the excavated soft rock neatly for formation of service road as directed including cost of all materials, machinery, labour, dressing bed and sides to required level and profile etc., complete with lead upto 10 m and lift upto 2 m. DATA:Capacity of shovel bucket Capacity of shovel bucket under heaped condition Lead for disposal of excavated soil : 0.50 cum : 0.57 cum : Upto 10 m In view of shallow depth of digging for field channels the cycle time for digging and disposal by shovel is assumed at 1.5 times the cycle time considered for canal. Shovel digging and loading cycle per bucket ( 1.5 x 30 ) : 45 sec 1. Quantity of excavation : In-situ qty per bucket for 25 % bulkage of soil ( 0.57 / 1.25 ) : 0.45 cum Output of shovel with 50 min./ hr working ( 50 x 60 x 0.45 / 45 ) : 30 cum / hr Daily output of excavation ( 8 x 30 ) say : 240 cum Further, assuming about 90 percent of excavation by deploying shovel and about 10 percent excavation mainly for trimming the canal to final profile by manual labour, the daily progress of excavation in soft rock will be : ( 240 / 0.9 ) say : 265 cum Consider 265 cum for rate analysis. 2. Requirement of materials: No materials involved in the work. 3. Requirement of machinery : Deploy 0.85 cum capacity shovel for 8 hours for digging and loading 240 cum. 4. Requirement of workforce ( other than machinery crew ) : Output of 1 crowbarman, 1 heavy & 1 light mazdoor assumed at 5 cum per day. Deploy 5 crowbarman, 5 heavy and 5 light mazdoors for trimming and disposal of 25 cum. RATE ANALYSIS UNIT : 265.00 cum A. MATERIALS: Sl No Perticulars 1 NIL 0.00 0.00 0.00 0.00 0.00 0.00 Total `: 0.00 Add for small Tools and Plants @ 1% `: 0.00 Add for Contractor's Profit @ 10% `: 0.00 Add for Contractor's Overheads @ 5% `: 0.00 Total cost of Materials : `: 0.00 11
B. MACHINERY: 1 Shovel 0.50 cum capacity Hour 8.00 801.00 6408.00 Fuel / Energy charges Hour 8.00 479.00 3832.00 Total `: 10240.00 Add for small Tools and Plants @ 1% `: 102.40 Add for Contractor's Profit on DPOL / Energy @ 10% `: 383.20 Add for Contractor's Overheads @ 5% `: 512.00 Total hire charges of Machinery : `: 11237.60 C. LABOUR: 1 Crew for Shovel Hour 8.00 146.00 1168.00 2 Maistry Day 1.00 276.17 276.17 3 Crowbarman Day 5.00 274.67 1373.33 4 Heavy mazdoor Day 5.00 273.67 1368.33 5 Light mazdoor Day 5.00 272.17 1360.83 Total `: 5546.64 Add for small Tools and Plants @ 1% `: 55.47 Add for Contractor's Profit @ 10% `: 554.66 Add for hidden cost on Labour @ 15% `: 832.00 Add for Contractor's Overheads @ 5% `: 277.33 Total cost of Labour : `: 7266.10 ABSTRACT: A. Cost of Materials `: 0.00 B. Hire charges of Machinery `: 11237.60 C. Cost of Labour `: 7266.10 TOTAL `: 18503.70 Add for other enabling works @ 1.00% `: 185.04 Total cost for 265.00 cum `: 18688.74 Rate per cum `: 70.52 Rate approved per cum `: 71.00 SECTION: CANAL AND ALLIED WORKS. YEAR : 2016-17 ITEM No: WRD: 3.5 ITEM: Excavation in soft rock requiring blasting including boulders above 0.6 m upto 1..2 m dia. for canal, seating of embankment, filter drain / catch water drains etc., and placing the excavated rock in dump area or for formation of service road as directed including cost of all materials, machinery, labour, dressing bed and sides to required level and profile etc.,complete with lead upto 1 km and depth of cut upto 18 m. DATA:Capacity of shovel bucket Capacity of shovel bucket under heaped condition Capacity of tipper Lead for disposal of excavated soft rock Speed for loaded tipper under canal excavation condition Speed for empty tipper under canal excavation condition : 0.85 cum : 1.00 cum : 5.00 cum : Upto 1 km : 15 km / hr : 15 km / hr 12
Turning and unloading time : 2.00 min Shovel digging and loading cycle per bucket : 40 sec 1. Quantity of excavation : In-situ qty / bucket for 35 % bulkage on unloading ( 1 / 1.35 ) : 0.74 cum In-situ quantity / load for 5 cum of soft rock ( 5 / 1.35 ) : 3.70 cum Number of buckets per load ( 3.70 / 0.74 ) say : 5 buckets Ideal cycle time for loading 5 buckets ( 5 x 40 / 60 ) : 3.33 min The ideal cycle time for shovel requires spotting of a tipper within 3.33 minutes near the shovel. However, in practice for dam or canal excavation the space available may not permit positioning of tippers on either side of the shovel. Generally one tipper has to move after loading to position the next tipper for loading. Assuming one cycle time extra the corrected cycle time for digging and loading one tipper by shovel will be : ( 6 x 40 / 60 ) : 4.00 min Round trip cycle time for tipper: Corrected cycle time of shovel for digging & loading : 4.00 min Time for ( av ) 0.75 km haulage under load ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and un-loading : 2.00 min Time for average 0.75 km return trip ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and spotting : 0.50 min Total : 12.50 min No.of tippers to match corrected cycle time of shovel ( 12.50 / 4.00 ) : 3.12 Nos Output of tipper / hr with 50 min working / hr ( 50 x 3.70 / 12.50 ) : 14.80 cum Output for 3 tippers per day ( 3 x 14.80 x 8 ) say : 355 cum Further, assuming about 90 percent of excavation by deploying shovel and about 10 percent excavation mainly for trimming of bed and sides to final profile by manual the daily output will be : ( 355 / 0.9 ) say : 395 cum Consider 395 cum excavation in soft rock requiring blasting for rate analysis. 2. Drilling and Blasting : Depth of drilling per hole : 1.40 m Effective depth of pull : 1.25 m Grid spacing of holes for soft rock requiring blasting depends on the nature of soft rock at any perticular location. For the purpose of rate analysis holes at average spacing of 1.5 times the spacing considered for hard rock is assumed. Grid spacing of holes : 1.50 x 2.00 m Area of excavation for 395 cum ( 395 / 1.25 ) : 316 sqm Nos. of holes for 316 sqm area 316 / ( 1.5 x 2.0 ) : 105 Nos. Depth of drilling for 105 holes ( 105 x 1.4 ) say : 147.00 m Add for secondary blasting LS : 3.00 m Total depth of drilling : 150 m Rate of drilling in soft rock per hour : 12 m With 50 min / hour working rate of drilling ( 12 x 50 / 60 ) : 10 m Time required for drilling with 2 jack hammers ( 150 / 2 / 10 ) : 7.50 hours 3. Requirement of materials : Jack hammer drill rod : 150 m drilling Quantity of Explosive ( Kelvex-220 ) at 0.2 kg / cum ( 395 x 0.2 ) : 79 kg Explosive for secondary blasting LS : 1 kg Ordinary detonators for secondary blasting 5 holes : 5 Nos. Electric detonators at 1 per hole for main blast : 105 Nos. Fuse coil : 175 Rm 4. Requirement of machinery : Deploy 0.85 cum capacity shovel for 8 hours for digging and loading 240 cum. 13
Deploy 3 tippers 5 cum capacity for 8 hours for disposal of 240 cum. Deploy 1 air compressor 8.5 cmm capacity for 7.5 hours. Deploy 2 jack hammers for 7.5 hours for drilling. 5. Requirement of workforce ( other than machinery crew ) : Output of 1 heavy & 1 light mazdoor assumed at 5 cum per day for trimming and disposal. Deploy 2 crowbarman, 2 stone breaker, 8 heavy and 8 light mazdoors for 40 cum. Deploy 1 blaster and 1 blasting helper for loading and blasting. Deploy 1 maistry for supervision. 6. Use rate of materials : Cost of drill rod 1.5 m long @ `: 4406.00 / Each `: 4406.00 Life of drill rod for drilling in soft rock with reconditioning : 200 m Use rate of drill rod per Rm drilling ( cost / life ) `: 22.03 Length of air hose for drilling for each jack hammer : 50 m Cost of 25 mm dia air hose 50 m @ `: 201.00 / Rm `: 10050.00 Life of air hose : 800 hours Use rate of 25 mm dia air hose per hr ( cost / life ) `: 12.56 RATE ANALYSIS UNIT : 395.00 cum A. MATERIALS: Sl No Perticulars 1 Use rate of Jack hammer drill rod 1.5 m Rm 150.00 22.03 3304.50 Reconditioning charges @ 10 % 330.45 2 Use rate of 50 m air hose 2 Nos Hour 15.00 12.56 188.44 3 Explosive small dia ( Kelvex-220 ) kg 80.00 63.00 5040.00 4 Ordinary detonators Nos 5.00 7.00 35.00 5 Electric detonators Nos 105.00 13.00 1365.00 6 Fuse coil Rm 175.00 10.00 1750.00 7 Sundries LS 3.00 45.00 135.00 Total `: 12148.39 Add for small Tools and Plants @ 1% `: 121.48 Add for Contractor's Profit @ 10% `: 1214.84 Add for Contractor's Overheads @ 5% `: 607.42 Total cost of Materials : `: 14092.13 B. MACHINERY: 1 Shovel 0.85 cum capacity Hour 8.00 1326.00 10608.00 Fuel / Energy charges Hour 8.00 877.00 7016.00 2 Tippers 5 cum capacity 3 Nos. Hour 24.00 309.00 7416.00 Fuel / Energy charges Hour 24.00 301.00 7224.00 3 Air compressor 8.5 cmm ( diesel ) Hour 7.50 223.00 1672.50 Fuel / Energy charges Hour 7.50 897.00 6727.50 4 Jack hammers 2 Nos. Hour 15.00 16.00 240.00 Fuel / Energy charges Hour 15.00 9.00 135.00 Total `: 41039.00 Add for small Tools and Plants @ 1% `: 410.39 Add for Contractor's Profit on DPOL / Energy @ 10% `: 2110.25 Add for Contractor's Overheads @ 5% `: 2051.95 Total hire charges of Machinery : `: 45611.59 14
C. LABOUR: 1 Crew for Shovel Hour 8.00 146.00 1168.00 2 Crew for Tipper Hour 24.00 108.00 2592.00 3 Crew for Air compressor Hour 7.50 138.00 1035.00 4 Crew for Jack hammer Hour 15.00 215.00 3225.00 5 Maistry Day 1.00 276.17 276.17 6 Blaster Day 1.00 278.17 278.17 7 Helper blaster Day 1.00 274.67 274.67 8 Crowbarman Day 2.00 274.67 549.33 9 Stone breaker Day 2.00 276.67 553.33 10 Heavy mazdoor Day 8.00 273.67 2189.32 11 Light mazdoor Day 8.00 272.17 2177.32 Total `: 14318.30 Add for small Tools and Plants @ 1% `: 143.18 Add for Contractor's Profit @ 10% `: 1431.83 Add for hidden cost on Labour @ 15% `: 2147.74 Add for Contractor's Overheads @ 5% `: 715.91 Total cost of Labour : `: 18756.97 ABSTRACT: A. Cost of Materials `: 14092.13 B. Hire charges of Machinery `: 45611.59 C. Cost of Labour `: 18756.97 TOTAL `: 78460.69 Add for other enabling works @ 1.00% `: 784.61 Total cost for 395.00 cum `: 79245.29 Rate per cum `: 200.62 Rate approved per cum `: 201.00 Note: For depth of cut exceeding 18 m from ground level increase the basic rate by 5 percent for the quantity of excavation beyond 18 m depth. SECTION: CANAL AND ALLIED WORKS. YEAR : 2016-17 ITEM No: WRD: 3.6.1 ITEM: Excavation in hard rock of all toughness by blasting including boulders above 0.6 m dia. ( 0.113 cum ) for canals, cut-off trench of embankment, filter / catch water drains etc., minimising damage to side slopes of canal in water prism area by adopting any one or combination of line drilling /pre-splitting /smooth blasting techniques and placing the excavated rock neatly in approved dump area as directed including cost of all materials,machinery, labour, levelling bed etc., complete with lead upto 1 km and depth of cut upto 18 m. DATA:Excavation for canal in hard rock can be by using jack hammers or by using waggon drills or by combination of both depending on the depth of cut, width of canal and side slope. In case of waggon drill the rate of drilling will be faster and yeild per hole will be more due to wider spacing of holes. For jack hammer drill the yeild per hole will be less due to closer spacing of holes. As both the systems have advantages as well as disadvantages it is proposed to work out rates using both the systems and include average rate in the Schedule of Rates. 15
I. By using Jack hammers for drilling : Assume 10.80 m width of canal at the bench level and 1.25 m average depth of cutting. Assume side slopes of 0.25 horizontal to 1 vertical. Generally, the length of canal bench to be excavated per blast shall not be more than 7 m to avoid tight muck pile requiring higher digging time for shovel. Sectional area of excavation 10.80 + 10.175 ) x 0.5 x 1.25 : 13.11 sqm Consider 7 burden distance for excavation per blast. Number of rows considered : 7 No. Length of canal for 7 rows ( 7 x 1.00 ) : 7.00 m Quantity of excavation for 7 m length ( 13.11 x 7.00 ) say : 92.00 cum 8.4 m 10.80 m 1 1.25 m 10.175 m 0.25 -- 1.0 m 1.2 m 7.00 m Free face SKETCH SHOWING DRILLING & BLASTING PATTERN 1. Drilling and Blasting: Consider drilling by Jack hammers and mucking by combination of Shovel and Tippers. The burden ( distance of hole from free face of excavation ) is considered at 25 to 30 times dia of hole and spacing of holes is considered at 1.20 to 1.25 times burden. Burden distance for 32 mm dia jack hammer holes ( 0.032 x 30 ) say : 1.00 m Spacing of holes ( 0.032 x 30 x 1.25 ) : 1.20 m Grid spacing of holes for 32 mm dia jack hammer holes : 1.00 x 1.20 m Depth of drilling per hole : 1.40 m Effective depth of pull considering 10 % sub-drilling : 1.25 m Rate of drilling by jack hammer in hard rock per hour : 8.00 m Rate of drilling per hour with 50 min / hour working ( 8 x 50 / 60 ) say : 6.5 m No.of holes in 7 rows @1.2 m interval staggered ( 4x8 + 3x9 + 16 ) : 75 Nos Length of drilling for 75 holes @ 1.4 m per hole ( 75 x 1.4 ) : 105 m Add drilling for secondary blasting for 5% quantity @ 0.6 m / cum say : 3 m Total : 108.00 m 16
Time for drilling 108 m for 2 jack hammers ( 108 / 2 / 6.5 ) : 8.30 hours Drilling and Blasting pattern : Pattern of holes : Staggered Hole initiation : Bottom Initiation system : Ele detonators Initiation pattern : All rows 2. Disposal of excavated rock : Quantity of excavation ( in-situ ) : 92.00 cum Capacity of shovel bucket : 0.85 cum Capacity of shovel bucket under heaped condition : 1.00 cum Capacity of tipper : 5.00 cum Lead for disposal of excavated rock : Upto 1 km Speed for loaded tipper under canal excavation condition : 15 km / hr Speed for empty tipper under canal excavation condition : 15 km / hr Turning and unloading time : 2.00 min Shovel digging and loading cycle per bucket : 45 sec In-situ qty / bucket for 40 % bulkage of hard rock ( 1 /1.40 ) : 0.71 cum In-situ qty per load for 40 % bulkage of hard rock ( 5 /1.40 ) : 3.57 cum Number of buckets per load ( 3.57 / 0.71 ) say : 5 buckets Ideal cycle time for loading 5 buckets ( 5 x 45 / 60 ) : 3.75 min The ideal cycle time for shovel requires spotting of a tipper within 3.75 minutes near the shovel. However, in practice for dam or canal excavation the space available may not permit positioning of tippers on either side of the shovel. Generally one tipper has to move after loading to position next tipper for loading. Assuming one loading cycle extra, the corrected cycle time for shavel will be ( 6 x 45 / 60 ) 4.50 min Round trip cycle time for tipper: Cycle time of shovel for digging & loading : 4.50 min Time for (av ) 0.75 km haulage under load ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and un-loading : 2.00 min Time for average 0.75 km return trip ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and spotting : 0.50 min Total : 13.00 min No.of tippers to match corrected cycle time of shovel ( 13.00 / 4.50) : 2.9 Nos Output of tipper / hr with 50 min working / hr ( 50 x 3.57 / 13.00 ) : 13.73 cum Deploy 0.9 cum shovel and 3 tippers for disposal of excavated rock. Output of 1 shovel & 3 tippers per hour ( in-situ qty ) ( 13.73 x 2.9 ) : 39.80 cum Out of the total blasted rock some residual muck at the bed needs to be removed by deploying manual labour. Assume residual muck at bed at 0.10 cum / sqm of bed area. Quantity of muck to be disposed by shovel ( 92-0.1 x 70 ) 85 cum Time for disposal of 85 cum by shovel ( 85 / 39.80 ) : 2.2 hours For levelling 85 cum muck in dump yard deploy 1 dozer for : 0.25 hour Quantity of muck to be disposed by manual labour ( 92-85 ) 7 cum 3. Requirement of materials : Jack hammer drill rod : 108 m drilling Quantity of Explosive ( Kelvex-220 ) at 0.3 kg / cum ( 92 x 0.3 ) : 27.60 kg Add for secondary blasting @ 0.2 kg / cum ( 92 x 0.05 x 0.2 ) : 0.90 kg Total : 28.50 kg Ordinary detonators for secondary blasting 8 holes of 0.6 m each : 8 Nos. Electric detonators @ 1 per hole for main blast : 75 Nos Detonating fuse coil : 120 Rm 17
4. Requirement of machinery : Deploy 0.85 cum capacity shovel for 2.2 hours for digging and loading 85 cum. Deploy 3 tippers 5 cum capacity for 2.2 hours for disposal of 85 cum. Deploy 1 air compressor 8.5 cmm capacity for 8.5 hours. Deploy 2 jack hammers for 8.5 hours for drilling. Deploy 1 angle dozer for 0.25 hour for levelling muck in dump area. 5. Requirement of workforce ( other than machinery crew ) : Deploy 1 Crowbarman, 1 Stone breaker for 1 day for levelling bed. Deploy 2 heavy and 2 light mazdoors for disposal of 9 cum residual muck at bed level and for other miscellaneous works. Deploy 1 blaster and 1 blasting helper for loading and blasting. Deploy 1 maistry. 6. Use rate of materials : Cost of drill rod 1.5 m long @ `: 4406.00 / Each `: 4406.00 Life of drill rod for drilling in hard rock with reconditioning : 150 m Use rate of drill rod per Rm drilling ( cost / life ) `: 29.37 Length of air hose for drilling for each jack hammer : 50 m Cost of 25 mm dia 50 m air hose @ `: 201.00 / Rm `: 10050.00 Life of air hose : 800 hours Use rate of 25 mm dia air hose per hour ( cost / life ) `: 12.56 RATE ANALYSIS UNIT : 92.00 cum A. MATERIALS: Sl No Perticulars 1 Use rate of Jack hammer drill rod 1.5 m Rm 108.00 29.37 3172.32 Reconditioning charges @ 10 % 317.23 2 Use rate of 50 m air hose 2 Nos. Hour 17.00 12.56 213.56 3 Explosive small dia. (Kelvex-220 ) kg 28.50 63.00 1795.50 4 Ordinary detonators Nos 8.00 7.00 56.00 5 Electric detonators Nos 75.00 13.00 975.00 6 Fuse coil Rm 120.00 10.00 1200.00 7 Sundries LS 2.00 45.00 90.00 Total `: 7819.61 Add for small Tools and Plants @ 1% `: 78.20 Add for Contractor's Profit @ 10% `: 781.96 Add for Contractor's Overheads @ 5% `: 390.98 Total cost of Materials : `: 9070.75 B. MACHINERY: 1 Shovel 0.85 cum capacity Hour 2.20 1326.00 2917.20 Fuel / energy charges Hour 2.20 877.00 1929.40 2 Angle dozer 90 hp Hour 0.25 1276.00 319.00 Fuel / Energy charges Hour 0.25 614.00 153.50 3 Tippers 5 cum capacity 3 Nos. Hour 6.60 309.00 2039.40 Fuel / Energy charges Hour 6.60 301.00 1986.60 in `. in `: 18
B. MACHINERY ( Contd ) : Contd 4 Air compressor 8.5 cmm ( diesel ) 1 Nos Hour 8.50 223.00 1895.50 Fuel / Energy charges Hour 8.50 897.00 7624.50 5 Jack hammers 2 Nos. Hour 17.00 16.00 272.00 Fuel / Energy charges Hour 17.00 9.00 153.00 Total `: 19290.10 Add for small Tools and Plants @ 1% `: 192.90 Add for Contractor's Profit on DPOL / Energy @ 10% `: 1184.70 Add for Contractor's Overheads @ 5% `: 964.51 Total hire charges of Machinery : `: 21632.21 C. LABOUR: 1 Crew for Shovel Hour 2.20 146.00 321.20 2 Crew for Dozer Hour 0.25 146.00 36.50 3 Crew for Tipper Hour 6.60 108.00 712.80 4 Crew for Air compressor Hour 8.50 138.00 1173.00 5 Crew for Jack hammer Hour 17.00 215.00 3655.00 6 Maistry Day 1.00 276.17 276.17 7 Blaster Day 1.00 278.17 278.17 8 Helper blaster Day 1.00 274.67 274.67 9 Crowbarman Day 1.00 274.67 274.67 10 Stone breaker Day 1.00 276.67 276.67 11 Heavy mazdoor Day 2.00 273.67 547.33 12 Light mazdoor Day 2.00 272.17 544.33 Total `: 8370.49 Add for small Tools and Plants @ 1% `: 83.70 Add for Contractor's Profit @ 10% `: 837.05 Add for hidden cost on Labour @ 15% `: 1255.57 Add for Contractor's Overheads @ 5% `: 418.52 Total cost of Labour : `: 10965.34 ABSTRACT: A. Cost of Materials `: 9070.75 B. Hire charges of Machinery `: 21632.21 C. Cost of Labour `: 10965.34 TOTAL `: 41668.29 Add for other enabling works @ 1.00% `: 416.68 Total cost for 92.00 cum `: 42084.98 Rate per cum `: 457.45 II. By using waggon drills for drilling : Assume 12.70 m width of excavation at bench level and 5.40 m depth of cutting in hard rock. Assume side slopes of 0.25 horizontal to 1 vertical. 19
1. Drilling and Blasting: Consider drilling by Waggon drill and mucking by combination of Shovel and Tippers. For good fragmentation to facilitate easy loading by 0.85 cum capacity shovel the bench height to burden ratio shall be more than 3. The burden ( distance of hole from free face of excavation ) is considered at 20 times diameter of hole and spacing of holes is considered at 1.25 times burden. Burden distance for 100 mm dia holes ( 0.10 x 20 ) : 2.00 m Spacing of holes at 1.25 times burden ( 0.10 x 20 x 1.25 ) : 2.50 m Grid spacing of holes for 100 mm dia Waggon drill holes : 2.00 x 2.50 m Consider 3 burden distance for excavation per blast. Depth of drilling per hole : 6.00 m Effective depth of pull considering 10 % sub-drilling say : 5.40 m Rate of drilling in hard rock per hour by Waggon drill : 12.00 m Rate of drilling per hour with 50 min per hour working ( 12 x 50 / 60 ) : 10 m 12.70 m 1 0.25 5.40 m 10.00 m 12.70 m 1 0.25 5.40 m 2.0 m 2.5 m 6.00 m Free face SKETCH SHOWING DRILLING & BLASTING PATTERN Sectional area of excavation ( 12.70+10.00 ) x 0.5 x 5.40 : 61.29 sqm Length of canal for excavation ( 3 x 2.00 ) : 6.00 m Quantity of excavation for 6.0 m length ( 61.29 x 6.00 ) : 368 cum No. of blast holes in 3 rows ( 2 x 5 + 1 x 6 + 2 x 4 ) : 24 holes 20
Length of drilling for 24 holes ( 11 x 6 + 13 x 6.2 ) say : 147 m Drilling for secondary blasting for 5% qty @ 0.6 m / cum : 11.00 m No.of blast holes for secondary blasting @ 0.6 m / hole ( 11 / 0.6 ) : 18 holes Consider 2 waggon drills for drilling holes. Time for drilling 147 m for 2 Waggon drill @ 10 m / hour : 7.33 hours Consider 368 cum hard rock excavation for rate analysis. 2. Disposal of excavated rock : Capacity of shovel bucket : 0.85 cum Capacity of shovel bucket under heaped condition : 1.00 cum Capacity of tipper : 5.00 cum Lead for disposal of excavated rock rock : Upto 1 km Speed for loaded tipper under canal excavation condition : 15 km / hr Speed for empty tipper under canal excavation condition : 15 km / hr Turning and unloading time : 2.00 min Shovel digging and loading cycle per bucket : 45 sec In-situ qty / bucket for 40 % bulkage of hard rock ( 1 / 1.40 ) : 0.71 cum In-situ qty per load for 40 % bulkage of hard rock ( 5 / 1.40 ) : 3.57 cum Number of buckets per load ( 3.57 / 0.71 ) say : 5 buckets Ideal cycle time for loading 5 buckets ( 5 x 45 / 60 ) : 3.75 min The ideal cycle time for shovel requires spotting of a tipper within 3.75 minutes near the shovel. However, in practice for dam or canal excavation the space available may not permit positioning of tippers on either side of the shovel. Generally one tipper has to move after loading to position next tipper for loading. Assuming one loading cycle extra, the corrected cycle time for shovel will be ( 6 x 45 / 60 ) 4.50 min Round trip cycle time for tipper: Cycle time of shovel for digging & loading : 4.50 min Time for (av ) 0.75 km haulage under load ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and un-loading : 2.00 min Time for average 0.75 km return trip ( 0.75 x 60 / 15 ) : 3.00 min Time for turning and spotting : 0.50 min Total : 13.00 min No.of tippers to match corrected cycle time of shovel (13.00 / 4.50) say : 2.9 Nos Output of tipper / hr with 50 min working / hr ( 50 x 3.57 / 13.00 ) : 13.73 cum Output of 2.7 tippers per hour ( 13.73 x 2.9 ) : 39.80 cum Out of the total blasted rock some residual muck at the bed needs to be removed by deploying manual labour. Assume residual muck at bed at 0.10 cum / sqm of bed area. Quantity of muck to be disposed by shovel ( 368-0.1 x 60 ) : 362 cum Time required for disposal of 362 cum ( 362 / 39.80 ) say : 9 hours For levelling 362 cum muck in dump yard deploy 1 dozer for : 1.00 hour Quantity of muck to be disposed by manual labour ( 368-362 ) : 6 cum 3. Requirement of materials : 100 mm dia TC bit : 147 m drilling Extension rods with sleeve : 147 m drilling Jack hammer drill rod : 11 m drilling Quantity of Explosive @ 0.5 kg / cum for 368 cum : 184.00 kg Consider 20 % high strength ANFO booster for priming ANFO. : 37.00 kg Consider 80 % ANFO mixed with diesel oil for colunm. : 147.00 kg Diesel oil @ 180 ml per kg of ANFO : 27.00 ltrs Quantity of Explosive @ 0.2 kg / cum for secondary blast : 4 kg Ordinary detonators for secondary blasting : 18 Nos. 21
Detonating cord for 24 holes in 3 rows Detonating fuse coil for secondary blasting : 210 Rm. : 20 Rm 4. Requirement of machinery : Deploy 0.85 cum capacity shovel for 9 hours for digging and loading 362 cum. Deploy 3 tippers 5 cum capacity for 9 hours for disposal of 362 cum. Deploy 2 air compressors 8.5 cmm capacity for 7.5 hours. Deploy 2 waggon drills for 7.5 hours for drilling main blast holes. Deploy 1 air compressor 8.5 cmm capacity for 1 hour. Deploy 2 jack hammers for 1 hour for drilling secondary blast holes. Deploy 1 angle dozer for 1 hour for levelling muck in dump area. 5. Requirement of workforce ( other than machinery crew ) : Deploy 1 Crowbarman, 1 Stone breaker for 1 day for levelling bed. Deploy 2 heavy and 2 light mazdoors for disposal of 9 cum residual muck at bed level. Deploy 1 blaster and 1 blasting helper for loading and blasting. Deploy 1 maistry. 6. Use rate of materials : Cost of T.C bit 100 mm dia @ `: 12215.00 / Each `: 12215.00 Life of drill bit for drilling in hard rock : 80 m Use rate of T.C bit per Rm drilling ( Cost / Life ) `: 152.69 Cost of extn rod with sleeve 4.5 m @ `: 4200.00 / Rm `: 18900.00 Life of extension rod : 1500 m Use rate of extension rod per Rm drilling ( Cost / Life ) `: 12.60 Cost of 1.5 m drill rod @ `: 4406.00 / Each `: 4406.00 Life of drill rod for drilling in hard rock with reconditioning : 150 m Use rate of drill rod per Rm drilling ( Cost / Life ) `: 29.37 Length of air hose for drilling for each jack hammer : 50 m Cost of 50 m air hose 25 mm @ `: 201.00 / Rm `: 10050.00 Life of air hose : 800 hours Use rate of air hose per hr ( Cost / Life ) `: 12.56 Cost of 50 m air hose 50 mm dia @ `: 271.00 / Rm `: 13550.00 Life of air hose : 800 hours Use rate of air hose per hr ( Cost / Life ) `: 16.94 RATE ANALYSIS UNIT : 368.00 cum A. MATERIALS: Sl No Perticulars 1 Use rate of T.C bit 100 mm dia Rm 147.00 152.69 22445.06 2 Use rate of Extension rod with sleeve Rm 147.00 12.60 1852.20 3 Use rate of Jack hammer drill rod 1.5 m Rm 11.00 29.37 323.11 Reconditioning charges @ 10 % 32.31 4 Use rate of air hose for waggon drill Hour 15.00 16.94 254.06 Use rate of 25 m air hose for JH 2 Nos Hour 2.00 12.56 25.13 5 High strength ANFO booster kg 37.00 71.00 2627.00 6 ANFO kg 147.00 56.00 8232.00 7 Diesel oil ltr 27.00 58.00 1566.00 8 Explosive small dia ( Kelvex-220 ) kg 4.00 63.00 252.00 Contd 22 in `. in `:
A. MATERIALS ( Contd ) : Sl No Perticulars Contd 9 Ordinary detonators Nos 18.00 7.00 126.00 10 D-cord Rm 210.00 10.00 2100.00 11 Detonating fuse coil Rm 20.00 10.00 200.00 12 Sundries LS 5.00 45.00 225.00 Total `: 40259.87 Add for small Tools and Plants @ 1% `: 402.60 Add for Contractor's Profit @ 10% `: 4025.99 Add for Contractor's Overheads @ 5% `: 2012.99 Total cost of Materials : `: 46701.45 B. MACHINERY: 1 Tippers 5 cum capacity Hour 27.00 309.00 8343.00 Fuel / Energy charges Hour 27.00 301.00 8127.00 2 Shovel 0.85 cum capacity Hour 9.00 1326.00 11934.00 Fuel / Energy charges Hour 9.00 877.00 7893.00 3 Angle dozer Hour 1.00 1276.00 1276.00 Fuel / Energy charges Hour 1.00 614.00 614.00 4 Air compressor 8.5 cmm ( diesel ) Hour 16.00 223.00 3568.00 Fuel / Energy charges Hour 16.00 897.00 14352.00 5 Waggon drill Hour 15.00 239.00 3585.00 Fuel / Energy charges Hour 15.00 15.00 225.00 6 Jack hammer Hour 2.00 16.00 32.00 Fuel / Energy charges Hour 2.00 9.00 18.00 Total `: 59967.00 Add for small Tools and Plants @ 1% `: 599.67 Add for Contractor's Profit on DPOL / Energy @ 10% `: 3122.90 Add for Contractor's Overheads @ 5% `: 2998.35 Total hire charges of Machinery : `: 66687.92 C. LABOUR: 1 Crew for Tipper Hour 27.00 108.00 2916.00 2 Crew for Shovel Hour 9.00 146.00 1314.00 3 Crew for Dozer Hour 1.00 146.00 146.00 4 Crew for Air compressor Hour 16.00 138.00 2208.00 5 Crew for Waggon drill Hour 15.00 172.00 2580.00 6 Crew for Jack hammer Hour 2.00 215.00 430.00 7 Maistry Day 1.00 276.17 276.17 8 Blaster Day 1.00 278.17 278.17 9 Helper blaster Day 1.00 274.67 274.67 10 Crowbarman Day 1.00 274.67 274.67 11 Stone breaker Day 1.00 276.67 276.67 Contd 23 in `. in `:
C. LABOUR ( Contd ) : Contd 12 Heavy mazdoor Day 2.00 273.67 547.33 13 Light mazdoor Day 2.00 272.17 544.33 Total `: 12065.99 Add for small Tools and Plants @ 1% `: 120.66 Add for Contractor's Profit @ 10% `: 1206.60 Add for hidden cost on Labour @ 15% `: 1809.90 Add for Contractor's Overheads @ 5% `: 603.30 Total cost of Labour : `: 15806.44 ABSTRACT: A. Cost of Materials `: 46701.45 B. Hire charges of Machinery `: 66687.92 C. Cost of Labour `: 15806.44 TOTAL `: 129195.81 Add for other enabling works @ 1.00% `: 1291.96 Total cost for 368.00 cum `: 130487.76 Rate per cum `: 354.59 Assuming use of Jack hammers & Waggon drills in 50 : 50 ratio Rate per cum `: 406.02 Rate approved per cum `: 406.00 Note: For depth of cut exceeding 18 m from ground level increase the basic rate by 5 percent for the quantity of excavation beyond 18 m depth. SECTION: CANAL AND ALLIED WORKS. YEAR : 2016-17 ITEM No: WRD: 3.6.2 ITEM: Excavation in hard rock of all toughness including boulders above 0.6 m diameter(0.113 cum) for canals, cut-off trench of embankments, filter / catch water drains and other appurtenent structures by approved controlled blasting methods including control of vibrations by use of delay detonators and control of fly-rocks by muffling arrangements and adopting only jack hammers for drilling holes and minimising damage to side slopes of canal in water prism area by adopting any one or combination of line drilling / pre-splitting / smooth blasting techniques including cost of all materials, machinery, labour, placing excavated rock neatly in approved dump area as directed etc., complete with lead upto 1 km and depth of cut upto 18 m. DATA:Work requires: - use of delay detonators to reduce ground vibrations. - covering blasting area with chain link mesh or waste conveyor belts or waste tyres and sand bags to prevent flying of rock fragments during blasting. Drilling and Blasting pattern : Pattern of holes : Staggered Hole initiation : Bottom Initiation system : Short delay detonators Delay system : 25 ms interval Initiation pattern : Straight line row by row 24