d ÀA À ÀÆä E ÁSÉ WATER RESOURCES DEPARTMENT CHAPTER- WRD: 6 SCHEDULE OF RATES TUNNEL AND ALLIED WORKS FOR THE YEAR : REFERENCE DATA
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1 d ÀA À ÀÆä E ÁSÉ WATER RESOURCES DEPARTMENT CHAPTER- WRD: 6 SCHEDULE OF RATES TUNNEL AND ALLIED WORKS FOR THE YEAR : CONTENTS PAGES REFERENCE DATA NOTES ON BASIC RATES DATA RATES ANNEXURES zàgà ÀnÖ À«Äw ÄAzÀ ÀjµÀÌj À ànözé REVISED BY SCHEDULE OF RATES COMMITTEE
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3 TUNNEL AND ALLIED WORKS - REFERENCE DATA FOR THE YEAR : COST OF MATERIALS: 1 Acetylene gas per cum `: Air hose 25 mm dia per Rm `: Binding wire per kg `: Cement 43 Gr per kg `: Coarse aggregate mm / cum `: Coarse aggregate mm / cum `: Coarse aggregate40-20 mm / cum `: Concrete admixture( Super plasticiser ) per ltr `: Cross bit ( TC ) 75 mm dia per No. `: Detonating fuse coil per Rm `: Detonator delay type per No. `: Detonator electric per No. `: Detonator ordinary per No. `: Explosive ( small dia ) per kg `: Extension rod with coupling sleeve per Rm `: Fine aggregate/ sand ( screened ) per cum `: G I Pipe 80 mm dia per Rm `: G I Pipe100 mm dia per Rm `: G.I. Bolts and Nuts per kg `: Guniting nozzle per No. `: Jungle wood planks per cum `: Jack hammer drill rod 1.5 m per No. `: Jack hammer drill rod 2.5 m per No. `: M S Bolts & Nuts per kg `: Oxygen gas per cum `: Plain G.I. Sheet per tonne `: Rails 30 kg / m per tonne `: Reinforcement steel per kg `: Resin bond cement grout capsule per No. `: Rivets per kg `: Shalimastic sealing compound per kg `: Shutter oil per ltr `: Stone chips at dump yard per cum `: Structural steel angle / channel / beam / bar per kg `: Structural steel plate / flat per kg `: Un-coursed rubble stones at dump yard per cum `: Water hose 20 mm dia per Rm `: Welding electrodes ( general purpose ) per No. `: Wire rope per kg `: ROYALTY CHARGES : Per tonne 1 Sand / Fine aggregate `: Stone / Coarse aggregate / Chips `:
4 LEAD, LOADING & UNLOADING CHARGES: 1 km lead Loading Unloading 1 Cement `: Earth / Sand / Gravel `: Steel `: Stone / Coarse aggregate `: HIRE CHARGES OF MACHINERY: Hire charge Fuel charge Crew charges 1 Agitator car truck mounted 2 cum per hour `: Air compressor 15 cmm ( ele ) per hour `: Air compressor 8.5 cmm ( ele ) per hour `: Bending machine per hour `: Batching plant 6 cum / hr rated capacity `: Concrete pneumatic placer pump per hour `: Convey mucker per hour `: DG set 30 KVA `: Diesel loco 45 hp per hour `: Drilling jumbo per hour `: Dumper 5 cum per hour `: Grout pump per hour `: Guniting equipment per hour `: Jack hammer per hour `: Pump 10 hp ( ele ) per hour `: Pump 20 hp ( ele ) per hour `: Pusher leg per hour `: Tipper 5 cum per hour `: Tipping tub 1.5 cum per hour `: Transformer 250 KVA per month `: Up-right drilling machine / Grinding machine `: Ventilation fan 20 hp per hour `: Vibrator ( ele ) per hour `: Waggon drill `: Welding transformer per hour `: Winch 35 hp electric per hour `: WAGES OF WORKERS: Per day 1 Bar bender `: Blasting helper `: Carpentor Cl- II `: Electrician `: Fitter shuttering works `: Mechanic Cl - I `: Foreman `: Helper fitter / erector / carpenter `: Khalasi `: Licensed Blaster `: Lineman `: Maistry `:
5 13 Mason Cl-I `: Mason Cl-II `: Mazdoor ( Cement handling ) `: Mazdoor ( Heavy) `: Mazdoor ( Light ) `: Pipe fitter `: Stone breaker ( Hammerman ) `: Stone chiseller Cl II `: Structural steel Marker / Erector `: Surveyor `: Tinsmith `: Turner / Driller `: Welder / Gas cutter `: ELECTRIC SUB-STATION MATERIALS: 1 RCC Pole 8m length (145kg/WL) including earth work, erection etc., `: Flood light 250/450 W ( HPMH/HPSodium vapour lamp ) `: Flood light luminaire set (250W HPMH/HPSV with control gear box) `: Fluoscent tube light ( 2'/4'-36/40W) `: Fluoscent tube light set ( Patti type with electronic ballast 1 x 4'-28W) `: Moulded case Circuit breaker (four pole Amps 50kA) `: HT/LT Rabbit Conductor (6/3.15mm AI+6/3.15mm steel) `: PVC Armoured cable 10 sqmm and below (4 core-1.1kv LTUG cable) `: PVC Armoured cable 16 sqmm (4 core-1.1kv LTUG cable) `: PVC Armoured cable 25 sqmm (3.5 core-1.1kv LTUG cable) `: PVC Armoured cable 70 sqmm (3.5 core-1.1kv LTUG cable) `: Transformer 250 kva `: OTHER DATA : 1 Contractor's Overheads on Materials / Machinery / Labour % Contractor's Profit on Materials / Fuel & Energy charges / Labour % Demand charges on power supply per KVA / month `: Electric Energy charges per kwhr `: Insurance charges on machinery per annum % Hidden cost on Labour % Hidden cost on Labour ( additional for Tunnel works ) % Rate of interest per annum % Small Tools & Plant on Materials / Machinery / Labour % Structural steel fabrication cost per kg `: Sundries ( Lump sum rate for unquantified inputs ) `: Cost of Electric sub-station & Demand charges ( Annexure - 1 ) % Cost of Air and Water lines ( Annexure - 2 ) % Cost of Ventilation ( Annexure - 3 ) % Cost of Lighting inside / out side tunnel ( Annexure - 4 ) % Cost of Other enabling works ( Annexure - 5 ) %
6 NOTES ON SCHEDULE OF RATES TUNNEL AND ALLIED WORKS FOR THE YEAR : All notes under General Notes on Schedule of Rates and Notes on Lead, Lift, Loading and un-loading Charges are applicable to Tunnel and Allied Works also to the extent they are relevant. 2. The basic rates are inclusive additional costs for working inside tunnel. 3. The basic rates are inclusive of scaling loose material, removal of under-cuts, cleaning bed and lighting and ventilation inside tunnel. 4. Unless otherwise specified the basic rates are inclusive of all lifts. 5. Unless otherwise specified the basic rates are inclusive of standard finish required for concrete surface. 6. For excavation and concrete lining works of approach / exit channels the basic rates as provided under ' Canal and allied works ' and ' Canal cross drainage works ' shall be adopted. 7. For intake structure, tunnel portals, retaining walls, pitching etc., the rates as provided under ' Dam and allied works ' shall be adopted. 8. The lead charges, wherever applicable, for all materials under various items shall be considered only between quarry/ source of supply and batching plant / fabrication site. Further conveyance of concrete / fabricated parts / other materials upto final placing site inside tunnel is included in the basic rates upto 1 km. 9. 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 tender for regulating payment for any upword or downword variation in cement content. 10. 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
7 TUNNEL AND ALLIED WORKS- DATA RATES SECTION: TUNNEL AND ALLIED WORKS. YEAR: ITEM No: WRD: 6.1 ITEM: Excavation for adit by tunnelling methods in all types of rock including cost of all materials, machinery, labour, ventilation, lighting, drainage, scaling excavated surface, removing and hauling excavated muck outside adit upto specified dump area and all other ancillary operations etc., complete with lead upto 500 m and all lifts. DATA:Size of adit assumed ( finished section ) : 4.50 m dia Shape of adit assumed for excavation : D - shape Height of adit assumed ( finished section ) : 4.50 m Pay-line margin assumed : 0.20 m Diameter of adit upto pay line for excavation : 4.90 m Distance of dump yard from face : within 500 m Haulage of excavated muck : By dumpers Excavated profile Pay line Minimum excavation line TYPICAL CROSS SECTION OF ADIT / TUNNEL 1. Checking alignment and marking hole locations : Deploy drilling jumbo for 1 hour for marking hole locations. 2. Drilling holes : Full face method of excavation is assumed. Area of adit upto pay-line ( 0.5 x x 4.9 x 4.9 )+( 4.9 x 2.45 ) : sqm The drilling pattern for excavation of tunnel / adit depends on the size and shape of tunnel, rock formation, type of explosive and the fragmentation of rock required to suite the type of mucking equipment. The drilling pattern shall ensure minimum over-break. Cut holes Easers Trimmers TYPICAL DRILLING PATTERN FOR ADIT / TUNNEL 5
8 Generally, the cut holes and easers will be spaced at 650 to 750 mm grid and the trimmers will be spaced at 500 to 600 mm apart along the periphery of excavation area. Considering this, the number of holes for tunnel excavation will be generally in the range of 2.5 to 3 per sqm of cross sectional area upto pay line for small tunnels ( cross sectional area less than 45 sqm ) and in the range of 2.0 to 2.5 per sqm of cross sectional area for large tunnels. For rate analysis 2.5 holes per sqm of cross sectional area upto pay line considered for adit. Number of holes for full face excavation ( x 2.5 ) : 54 Nos Depth of holes : 2 m Extra drilling considered at 10 percent for inclined cut holes and for any secondary blasting of large fragments during mucking. Depth of drilling for 54 holes ( 54 x 2 x 1.10 ) : 119 m Average rate of drilling per hour per jack hammer : 5 m Time for 4 jack hammers with pusher leg for drilling. ( 119 / 4 / 5 ) say : 6 hours Time for 1 air compressor 15 cmm for air supply to 4 jack hammers : 6 hours Time for drilling jumbo for drilling : 6 hours Time for 10 hp pump for water supply to drilling work. : 6 hours 3. Loading explosive and blasting : Depth of pull per blast for 2 m deep holes : 1.80 m Quantity of in-situ excavation per blast ( x 1.80 ) : 38.6 cum Quantity of explosive small dia per 1.00 kg per cum : 38 kg Quantity of explosive for secondary 5 % : 2 kg Quantity of delay detonators per blast : 54 Nos. Quantity of electric detonators for secondary blasting ( LS ) : 5 Nos. Fuse coil : 120 Rm Time for drilling jumbo for loading explosives. : 1 hour 4. Defuming and scaling loose materials: No machinery other than ventilation fans are required. For defuming adit ventilation fans are installed in duct system at about 300 m interval and are run for about 1 hour after each blast. Consider 20 hp fan 1 No. for 1 hour for defuming. 5. Mucking excavated rock : Quantity of muck to be removed per blast considering 40 % bulkage : 54 cum Capacity of dumper per load : 5.00 cum Quantity of muck per load considered under adit working conditions : 4.50 cum Loading cycle time: Turning / moving and spotting : 1 minute Loading muck by convey mucker and work force : 20 minutes Cycle time of loading dumper per load of 4.50 cum : 21 minutes Haulage cycle time: Running time from loading point to dump av 10 km / hr : 3.0 minutes Turning and unloading : 2.0 minutes Return trip to reversing av 15 km / hr : 2.0 minutes Cycle time for haulage per load of 4.5 cum : 7.0 minutes Since the waiting time will be more than the running time if 2 dumpers are deployed deploy 1 dumper for conveying muck. Round trip cycle time of dumper say : 30 minutes Quantity of muck disposal per hour / dumper : 9.00 cum Time for 1 dumper for conveying 9 cum per hour : 6 hours Time for convey mucker and labour force for loading : 6 hours 6
9 6. Overall cycle time : Checking alignment and marking hole locations : 2.00 hours Drilling holes : 6.00 hours Loading explosive and blasting : 2.00 hours Defuming and scaling loose rock fragments : 2.00 hours Mucking excavated rock : 6.00 hours Bed cleaning, support fixing, rock bolting, lighting etc say : 6.00 hours Total cycle of excavation per blast of 1.8 m length : hours 7. Requirement of materials : Explosive small dia ( ) : 40 kg Electric short delay detonators ( 54 x 1 ) : 54 Nos Electric detonators for secondary blasting ( 1 x 5 ) : 5 Nos Fuse coil : 120 Rm 8. Requirement of machinery : Deploy drilling jumbo for marking (1 hr) / drilling (6 hrs) / loading explosive (1 hr) : 8 hours Deploy air compressor 15 cmm for air supply to 4 jack hammers : 6 hours Deploy 4 jack hammers with pusher leg for drilling. : 6 hours Deploy 10 hp pump for water supply to drilling work. : 6 hours Deploy 20 hp ventilation fan for defuming : 1 hour Deploy convey mucker for loading excavated rock : 6 hours Deploy 1 dumper for conveying muck : 6 hours 9. Requirement of workforce ( other than machinery crew ) : Surveyor for checking alignment and marking hole locations for drilling : 0.5 No. Foreman for supervising drilling of holes and other operations : 1 No. Fitter / Mechanic for extending air / water lines : 2 Nos. Blaster ( Licensed ) : 1 No. Helper blasting : 2 Nos. Hammerman for scaling : 2 Nos. Maistry 1 in each shift : 3 Nos. Khalasi for mucking shift : 4 Nos. Heavy mazdoor for mucking shift : 4 Nos. for other 2 shifts 1 No each shift : 2 Nos. Light mazdoor for cleaning & miscellaneous : 1 No. 10. Use rate of materials: Cost of drill rod 2.5 m `: / No. `: Life of drill rod with reconditionong : 150 m Use rate of drill rod per Rm drilling ( cost / life ) `: Length of air and water hose assumed : 25 m each Cost of 25 mm dia air hose 25 `: / Rm `: Life of air hose : 800 hours Use rate of air hose per hour ( cost / life ) `: 6.28 Cost of water hose 25 m `: / Rm `: Life of water hose : 800 hours Use rate of water hose per hour ( cost / life ) `:
10 RATE ANALYSIS UNIT : cum A. MATERIALS: Sl No Perticulars 1 Small dia explosive kg Delay detonators Nos Electric detonators Nos Detonating fuse coil Rm Use rate of drill rod 2.5 m long Rm Reconditioning 10% Use rate of air hose Hour Use rate of water hose Hour Sundries( paint / template etc ) LS Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for Contractor's 5% `: Total cost of Materials : `: B. MACHINERY: 1 Drilling jumbo Hour Fuel / Energy charges Hour Air compressor 15 cmm ( ele ) Hour Fuel / Energy charges Hour Jack hammer ( 4 x 6 hrs ) Hour Fuel / Energy charges Hour Pusher leg Hour Fuel / Energy charges Hour Convey mucker Hour Fuel / Energy charges Hour Dumper ( 1 x 6 hrs ) Hour Fuel / Energy charges Hour Pump 10 hp ( ele ) ( 1 x 6 hrs ) Hour Fuel / Energy charges Hour Ventilation fans 20 hp ( 1 x 1 hr ) Hour Fuel / Energy charges Hour Sundries(explosive van / magazine ) LS Total `: Add for small Tools and 1% `: Add for Contractor's Profit on DPOL / 10% `: Add for Contractor's 5% `: Total hire charges of Machinery : `: C. LABOUR: 1 Crew for Drilling jumbo Hour in `. in `.
11 C. LABOUR ( ) : 2 Crew for Air compressor Hour Crew for Jack hammer Hour Crew for Convey mucker Hour Crew for Dumper Hour Crew for Pump Hour Crew for ventilation fans Hour Surveyor Day Foreman Day Fitter / Mechanic Day Blaster ( Licensed ) Day Helper blasting Day Hammerman Day Maistry 1 in each shift Day Khalasi for mucking shift 4 Nos Day Heavy mazdoor for mucking shift 4 Nos Day for other 2 shifts 1 No each shift Day Light mazdoor for cleaning & miscellaneous Day Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for hidden cost on 15% `: Add for additional hidden cost on 10% `: Add for Contractor's 5% `: Total cost of Labour : `: ABSTRACT: A. Cost of Materials `: B. Hire charges of Machinery `: C. Cost of Labour `: TOTAL `: Add for Air and Water 0.80% `: Add for 5.80% `: Add for 1.80% `: Add for Ele sub-station / Demand 3.90% `: Add for other Enabling 1.70% `: Total cost for cum `: Rate per cum `: Rate approved per cum `: SECTION: TUNNEL AND ALLIED WORKS. YEAR: ITEM No: WRD: 6.2 ITEM: Excavation for vertical / inclined shaft in all types of soft / hard rock including cost of all materials, machinery, labour, ventilation, lighting, drainage, shoring, strutting, scaling excavated 9
12 surface, removing and hauling excavated muck outside shaft upto specified dump area and all other ancillary operations etc., complete with lead upto 1 km and all lifts. DATA:Size of shaft assumed : 5.00 m dia Shape of shaft assumed for excavation : Circular Depth of shaft assumed : m Pay-line margin assumed : 0.20 m Diameter of shaft upto pay line for excavation : 5.40 m Distance of dump yard from face : within 500 m Average lift assumed for excavation of shaft upto tunnel level : 40 m 1. Checking alignment and marking hole locations : Use of winch & cradle during marking hole locations : 1 hour 2. Drilling holes : Area of excavation upto payline ( x 5.4 x 5.4 ) : sqm Depth of drilling : 1.50 m Depth of pull : 1.30 m No.of peripheral 0.65 m spacing ( 20 times dia ) : 24 Nos. No. of holes in shaft 2 per sqm ( x 5 x 5 x 2 ) : 40 Nos. Depth of drilling for 64 holes ( 64 x 1.5 ) : 96 m Extra drilling considered at 5 percent for secondary blasting of large fragments. Total depth of drilling ( 96 x 1.05 ) say : 101 m Average rate of drilling per hour per jack hammer : 5 m Time for 4 jack hammers for drilling. ( 101 / 4 / 5 ) say : 5 hours Time for 1 air compressor 15 cmm for air supply to 4 jack hammers : 5 hours Time for 10 hp pump for pumping water to storage tank. : 5 hours Time for 20 hp sludge pump for removing drill water from pit : 2 hours Total time for drilling including preparation for drilling : 5 hours 3. Loading explosive and blasting : Quantity of in-situ excavation per blast ( x 1.30 ) : 30 cum Quantity of explosive small dia per 1.0 kg per cum : 30 kg Quantity of explosive for secondary 5 % : 2 kg Quantity of electric detonators for blasting : 69 Nos. Detonating fuse coil : 120 Rm Use of winch & cradle during loading of explosives : 1 hour 4. Defuming shaft: Generally for shafts defuming is carried out by leaving compressed air by air hose for about 0.5 hour to remove blasting gases and dust. Use air compressor for 0.5 hour. 5. Mucking excavated rock : Winch and 0.5 cum bottom / side opening bucket are considered for removing the muck from shaft and rail mounted tipping tubs are considered for further haulage and disposal. Quantity of muck to be removed per blast considering 40 % bulkage : 42 cum Deploy 8 heavy mazdoors for mucking in the shaft. Consider out-put of each mazdoor at 3 cum / day for working on rocky surface. Time for loading 0.5 cum bucket ( 0.5 x 8 x 60 / 3 / 8 ) : 10 min Cycle time for operating mucking bucket by winch : Lowering bucket by 15 m / minute for av. 40 m : 3.00 min Loading muck by work force : min Lifting by 15 m / minute for av. 40 m : 3.00 min Unloading to tipping tub : 1.50 mun 10
13 Over all cycle time for mucking 0.5 cum by deploying 2 buckets say : min Quantity of muck per mucking bucket : 0.50 cum Time required for mucking 42 cum ( 42 x 10 / 0.50 / 60 ) : 14 hours Considering time for shift change etc., total time required for mucking : 16 hours Considering use of winch during marking / drilling / blasting / time for shift change / etc., deploy winch for 24 hours with fuel / energy charges for 16 hours. Use 2 mucking buckets for 16 hours for removing muck from shaft. Use 1 tipping tub for 16 hours for disposal of muck outside shaft. 6. Overall cycle time : Marking hole locations and preparation for drilling : 0.50 hours Drilling holes : 5.00 hours Loading explosive and blasting : 2.00 hours Defuming by leaving compressed air : 0.50 hours Mucking excavated rock : hours Total cycle of excavation per blast of 1.3 m depth : hours 7. Requirement of materials : Explosive small dia ( ) : 32 kg Electric detonators for main / secondary blasting ( ) : 69 Nos Fuse coil : 120 Rm 8. Requirement of machinery : Deploy winch for various operations : 24 hours ( marking holes 1 hr + drilling 5 hrs + loading explosives 1 hr + mucking 16 hrs + misc 1 hr) Deploy air compressor 15 cmm for air supply to 4 jack hammers : 5.5 hours ( drilling 5 hrs + defuming 0.5 hr ) Deploy 4 jack hammers for drilling. : 5 hours Deploy 10 hp pump for water supply to drilling work. : 5 hours Deploy 20 hp sludge pump for removing drill water : 2 hours Deploy 1 tipping tub for conveying muck : 16 hours 9. Requirement of workforce ( other than machinery crew ) : Surveyor for checking alignment and marking hole locations for drilling : 0.5 No. Foreman for supervising winch and other operations ( 1 in each shift ) : 3 Nos. Fitter / Mechanic for arranging air / water lines / sludge pump etc. : 2 Nos. Blaster ( Licensed ) : 1 No. Helper blasting : 2 Nos. Hammerman for scaling / breaking large stones ( 4 in 2 mucking shifts ) : 4 Nos. Maistry ( 1 in each shift ) : 3 Nos. Khalasi ( 8 in 2 mucking shifts ) : 8 Nos. Heavy mazdoor for mucking shift ( 8 in each shift for 2 shifts ) : 16 Nos. for other 1 shift ( 2 Nos ) : 2 Nos. Light mazdoor for cleaning & miscellaneous : 2 Nos. 10. Use rate of materials: Cost of drill rod 1.5 m `: / No. `: Life of drill rod with reconditioning : 150 m Use rate of drill rod per Rm drilling ( cost / life ) `: Length of air and water hose assumed : 100 m each 11
14 Cost of 25 mm dia air hose 100 `: / Rm `: Life of air hose : 800 hours Use rate of air hose per hour ( cost / life ) `: Cost of water hose 100 m `: / Rm `: Life of water hose : 800 hours Use rate of water hose per hour ( cost / life ) `: Quantity of rails for haulage of tubs Haulage track outside : 2 x 150 m Weigth of 30R rails 300 m 30 kg / Rm : 9 tonnes Cost of 30 R rails 300 `: / tonne `: Add for 25% `: Total `: Less salvage 10% ( - ) `: Total `: Life of rails under tunnel working conditions : 15 years Use rate of rails per year ( cost / life ) `: Add for repairs & 10% `: Total `: Use rate of rails per shift considering 300 working days `: Consider use of rail track for 24 hours. Length of 16 mm dia wire rope for winch assuming 80 m deep shaft : 150 m Cost of wire rope 150 m ( 160 kg `: / kg `: Life of wire rope for lifting : 2500 hours Use rate of wire rope per hour ( cost / life ) `: Weight of mucking bucket : 250 kg Cost of steel 75 `: / kg `: Cost of steel 25 `: / kg `: Cost of `: / kg `: Total `: Add for hooks / door arrangements 25% `: Total `: Less salvage 10% ( - ) `: Add for repairs / maintenance 10% `: Total `: Life of mucking bucket assumed : 2500 hours Use rate of mucking bucket per hour ( cost / life ) `: 7.49 RATE ANALYSIS UNIT : cum A. MATERIALS: Sl No Perticulars 1 Small dia explosive kg Electric detonator Nos Detonating fuse coil Rm Use rate of drill rod 1.5 m long Rm Reconditioning 10% Use rate of air hose ( 4 x ) Hour Use rate of water hose ( 4 x 5 ) Hour Use rate of rail track Shift Use rate of wire rope Hour in `. in `.
15 A. MATERIALS ( ) : Sl No Perticulars 9 Use rate of mucking bucket ( 2 x 16 ) Hour Sundries ( paint / template etc ) LS Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for Contractor's 5% `: Total cost of Materials : `: B. MACHINERY: 1 Air compressor 15 cmm ( ele ) Hour Fuel / Energy charges Hour Jack hammer ( 4 x 5 hrs ) Hour Fuel / Energy charges Hour Pump 10 hp ( ele ) Hour Fuel / Energy charges Hour Sludge pump 20 hp electric Hour Fuel / Energy charges Hour Winch 35 hp electric Hour Fuel / Energy charges Hour Tipping tub 1.5 cum Hour Fuel / Energy charges Hour Sundries ( explosive van / magazine ) LS Total `: Add for small Tools and 1% `: Add for Contractor's Profit on DPOL / 10% `: Add for Contractor's 5% `: Total hire charges of Machinery : `: C. LABOUR: 1 Crew for Air compressor Hour Crew for Jack hammer Hour Crew for Pump 10 hp Hour Crew for Sludge pump 20 hp Hour Crew for Winch Hour Surveyor Day Foreman Day Fitter / Mechanic Day Blaster ( Licensed ) Day Helper blasting Day Hammerman 2 Nos each for 2 shifts Day Maistry 1 in each shift Day in `. in `.
16 C. LABOUR ( ) : 13 Khalasi for mucking 4 Nos each for 2 shifts Day Heavy mazdoor for mucking 8 Nos each for 2 shifts Day for other 1 shift 2 Nos Day Light mazdoor for cleaning & miscellaneous Day Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for hidden cost on 15% `: Add for additional hidden cost on 10% `: Add for Contractor's 5% `: Total cost of Labour : `: ABSTRACT: A. Cost of Materials `: B. Hire charges of Machinery `: C. Cost of Labour `: TOTAL `: Add for Air and Water 0.80% `: Add for 0.00% `: 0.00 Add for 1.80% `: Add for Ele sub-station / Demand 3.90% `: Add for other Enabling 1.70% `: Total cost for cum `: Rate per cum `: Rate approved per cum `: SECTION: TUNNEL AND ALLIED WORKS. YEAR: ITEM No: WRD: 6.3 ITEM: Excavation for tunnel by tunnelling methods in rock not requiring supports including cost of all materials,machinery, labour, ventilation, lighting, drainage, scaling excavated surface, removing under-cuts, removing and hauling excavated muck outside tunnel upto specified dump area and all other ancillary operations etc., complete with lead upto 1 km and all lifts. DATA:Size of tunnel assumed ( finished section ) : 4.50 m dia Shape of tunnel assumed for excavation : D - shape Height of tunnel assumed ( finished section ) : 4.50 m Length of tunnel assumed : 1000 m Thickness of CC lining : 0.30 m Pay-line margin assumed : 0.20 m Diameter of tunnel upto pay line for excavation : 5.50 m Distance of dump yard from face including approach / adit length : Average 1 km Haulage of excavated muck : By dumpers in `. in `. 14
17 Concrete lining Excavated profile Pay line Minimum excavation line Finished tunnel line TYPICAL CROSS SECTION OF TUNNEL 4.50 m dia. 1. Checking alignment and marking hole locations : Use of drilling jumbo for marking hole locations : 1 hour 2. Drilling holes : Area of tunnel upto pay-line( 0.5 x x 5.5 x 5.5 )+( 5.5 x 2.75 ) : sqm The number of holes for tunnel excavation will be generally in the range of 2.5 to 3.0 per sqm of cross sectional area upto pay line for tunnel upto 45 sqm and in the range of 2.0 to 2.5 per sqm of cross sectional area upto pay line for tunnel exceeding 45 sqm. For rate analysis 2.5 holes per sqm of cross sectional area considered. Number of holes for full face excavation ( 27 x 2.5 ) : 68 Nos Depth of holes : 2 m Extra drilling considered at 10 percent for inclination of holes and for removal of any under cuts and for secondary blasting of large fragments during mucking. Depth of drilling for 68 holes ( 68 x 2 x 1.10 ) : 150 m Average rate of drilling per hour per jack hammer : 5 m Time for 4 jack hammers with pusher leg for drilling. ( 150 / 4 / 5 ) say : 7.5 hours Time for 1 air compressor 15 cmm for air supply to 4 jack hammers : 7.5 hours Time for drilling jumbo for drilling : 8 hours Time for 10 hp pump for water supply to drilling work. : 7.5 hours 3. Loading explosive and blasting : Depth of pull per blast for 2 m deep holes : 1.80 m Quantity of in-situ excavation per blast ( x 1.80 ) : 49 cum Quantity of explosive small dia per 1.00 kg per cum : 49 kg Quantity of explosive for under cuts secondary 10 % : 5 kg Quantity of delay detonators per blast : 68 Nos. Quantity of electric detonators for secondary blasting ( LS ) : 10 Nos. Detonating fuse coil ( LS ) : 160 Rm Time for drilling jumbo for loading explosives : 1.5 hour 4. Defuming and scaling loose materials: No machinery other than ventilation fans required. For defuming tunnel ventilation fans are installed in duct system at about 300 m interval and are run for about 1 hour after each blast. For 1 km length of tunnel ventilation fans are required at 4 places at 300 m interval. As the fans are installed progressively, for rate analysis consider average 2 fans for 1 hour. 5. Mucking excavated rock : Quantity of muck to be removed per blast considering 40 % bulkage : 69 cum Capacity of dumper per load : 5.00 cum Quantity of muck per load considered under tunnel working conditions : 4.50 cum 15
18 Loading cycle time: Moving from turning pocket position and spotting : 1 minutes Loading muck by convey mucker and work force : 20 minutes Time for loaded dumper to pass waiting point say : 1 minutes Cycle time of loading dumper per load of 4.50 cum : 22 minutes Haulage cycle time: Running time from loading point to dump yard at av. 10 km / hr : 6 minutes Turning and unloading : 2 minutes Return trip to waiting av. 15 km / hr : 4 minutes Waiting time before spotting : 9 minutes Cycle time for haulage per load of 4.5 cum : 21 minutes Round trip cycle time of dumper ( ) say : 45 minutes Quantity of muck disposal per hour / dumper : 6.00 cum Deploy 2 dumpers for conveying 12 cum per hour say : 6 hours Deploy convey mucker and labour force for loading : 6 hours 6. Overall cycle time : Checking alignment and marking hole locations : 2.00 hours Drilling holes : 7.50 hours Loading explosive and blasting : 2.00 hours Defuming and scaling loose rock fragments : 2.00 hours Mucking excavated rock : 6.00 hours Bed cleaning, support fixing, rock bolting, lighting etc say : 4.50 hours Total cycle of excavation per blast of 1.8 m length : hours 7. Requirement of materials : Explosive small dia ( ) : 32 kg Electric short delay detonators ( 68 x 1 ) : 68 Nos Electric detonators for secondary blasting ( 10 x 1 ) : 10 Nos Fuse coil : 160 Rm 8. Requirement of machinery : Deploy drilling jumbo for various operations 11 hours ( marking holes 1 hr + drilling 7.5 hrs + loading explosives 1.5 hrs + misc 1 hr ) Deploy air compressor 15 cmm for air supply to 4 jack hammers : 7.5 hours Deploy 4 jack hammers with pusher leg for drilling. : 7.5 hours Deploy 10 hp pump for water supply to drilling work. : 7.5 hours Deploy 20 hp ventilation fan for defuming : 2 hours Deploy convey mucker for loading excavated rock : 6 hours Deploy 2 dumper for conveying muck : 6 hours 9. Requirement of workforce ( other than machinery crew ) : Surveyor for checking alignment and marking hole locations for drilling : 1 No. Foreman for supervising drilling of holes and other operations : 1 No. Fitter / Mechanic for extending air / water lines : 2 Nos. Blaster ( Licensed ) : 1 No. Helper blasting : 2 Nos. Hammerman for scaling : 2 Nos. Maistry 1 in each shift : 3 Nos. Khalasi for mucking shift : 4 Nos. 16
19 Heavy mazdoor : for mucking shift for other 2 shifts 2 No each shift Light mazdoor : for cleaning & miscellaneous 10. Use rate of materials: : 8 Nos. : 4 Nos. : 2 Nos. Cost of drill rod 2.5 m `: / No. `: Life of drill rod with reconditioning : 150 m Use rate of drill rod per Rm drilling ( cost / life ) `: Length of air and water hose assumed : 25 m each Cost of 25 mm dia air hose 25 `: / Rm `: Life of air hose : 800 hours Use rate of air hose per hour ( cost / life ) `: 6.28 Cost of water hose 25 m `: / Rm `: Life of water hose : 800 hours Use rate of water hose per hour ( cost / life ) `: 5.78 RATE ANALYSIS UNIT : cum A. MATERIALS: Sl No Perticulars 1 Small dia explosive kg Delay detonators Nos Electric detonators Nos Detonating fuse coil Rm Use rate of drill rod 2.5 m long Rm Reconditioning 10% Use rate of air hose Hour Use rate of water hose Hour Sundries ( paint / template etc ) LS Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for Contractor's 5% `: Total cost of Materials : `: B. MACHINERY: 1 Drilling jumbo Hour Fuel / Energy charges Hour Air compressor 15 cmm ( ele ) Hour Fuel / Energy charges Hour Jack hammer ( 4 x 7.5 hrs ) Hour Fuel / Energy charges Hour Pusher leg Hour Fuel / Energy charges Hour Convey mucker Hour Fuel / Energy charges Hour in `. in `.
20 B. MACHINERY ( ) : 6 Dumper ( 2 x 6 hrs ) Hour Fuel / Energy charges Hour Pump 10 hp ( ele ) Hour Fuel / Energy charges Hour Ventilation fans 20 hp ( 2 x 1 ) Hour Fuel / Energy charges Hour Sundries ( explosive van / magazine ) LS Total `: Add for small Tools and 1% `: Add for Contractor's Profit on DPOL / 10% `: Add for Contractor's 5% `: Total hire charges of Machinery : `: C. LABOUR: 1 Crew for Drilling jumbo Hour Crew for Air compressor Hour Crew for Jack hammer Hour Crew for Convey mucker Hour Crew for Dumper Hour Crew for Pump Hour Crew for ventilation fans Hour Surveyor Day Foreman Day Fitter / Mechanic Day Blaster ( Licensed ) Day Helper blasting Day Hammerman Day Maistry 1 in each shift Day Khalasi for mucking shift 4 Nos Day Heavy mazdoor for mucking shift 8 Nos Day for other 2 shifts 2 No each shift Day Light mazdoor for cleaning & miscellaneous Day Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for hidden cost on 15% `: Add for additional hidden cost on 10% `: Add for Contractor's 5% `: Total cost of Labour : `:
21 ABSTRACT: A. Cost of Materials `: B. Hire charges of Machinery `: C. Cost of Labour `: TOTAL `: Add for Air and Water 0.80% `: Add for 5.80% `: Add for 1.80% `: Add for Ele sub-station / Demand 3.90% `: Add for other Enabling 1.70% `: Total cost for cum `: Rate per cum `: Rate approved per cum `: Note: Where mucking is to be carried out through vertical / inclined shaft using winch and mucking tub arrangement increase the basic rate per cum by 8.00 percent. SECTION: TUNNEL AND ALLIED WORKS. YEAR: ITEM No: WRD: 6.4 ITEM: Excavation for tunnel by tunnelling methods including excavation for supports in all types of soil / rock strata requiring supports ( excluding cost of providing supports ) including cost of all other materials, machinery, labour, ventilation, lighting, drainage, scaling excavated surface, removing and hauling excavated muck outside tunnel upto specified dump area and all other ancillary operations etc., complete with lead upto 1 km and all lifts. DATA:Size of tunnel assumed ( finished section ) : 4.50 m dia Shape of tunnel assumed for excavation : D - shape Height of tunnel assumed ( finished section ) : 4.50 m Length of tunnel assumed : 1000 m Thickness of CC lining : 0.30 m Extra excavation for supports : 0.25 m Pay-line margin assumed : 0.20 m Diameter of tunnel upto pay line for excavation : 6.00 m Distance of dump yard from face including approach / adit length : Average 1 km Haulage of excavated muck : By dumpers 1. Checking alignment and marking hole locations : Use drilling jumbo for 1 hour for marking hole locations. 2. Drilling holes : Area of tunnel upto pay-line (0.5x0.7857x6x6) + (6x2.75) : sqm The number of holes for tunnel excavation will be generally in the range of 2.5 to 3.0 per sqm of cross sectional area upto pay line for tunnel upto 45 sqm and in the range of 2.0 to 2.5 per sqn of cross sectional area upto pay line for tunnel exceeding 45 sqm. For rate analysis 2.5 holes per sqm of cross sectional area considered. Number of holes for full face excavation ( x 2.5 ) : 77 Nos Assuming spacing of supports at 0.75 m the depth of pull is considered at 1.5 m. Depth of holes for 1.5 m pull : 1.7 m Extra drilling considered at 10 percent for inclination of holes and for removal of any under cuts and for secondary blasting of large fragments during mucking. Depth of drilling for 77 holes ( 77 x 1.7 x 1.10 ) : 144 m Average rate of drilling per hour per jack hammer : 5 m 19
22 Time for 4 jack hammers with pusher leg for drilling. : 7 hours Time for 1 air compressor 15 cmm for air supply to 4 jack hammers : : 7 hours Time for drilling jumbo for drilling : 7 hours Time for 10 hp pump for pumping water to storage tank. : 7 hours 3. Loading explosive and blasting : Depth of pull per blast for 1.7 m deep holes : 1.50 m Quantity of in-situ excavation per blast ( x 1.50 ) : 46 cum Quantity of explosive small dia per 0.8 kg per cum : 37 kg Quantity of explosive for secondary 10 % : 4 kg Quantity of delay detonators per blast : 77 Nos. Quantity of electric detonators for secondary blasting ( LS ) : 10 Nos. Detonating fuse coil : 175 Rm Use drilling jumbo for 2 hour for loading explosives. 4. Defuming and scaling loose materials No machinery other than ventilation fans required. For defuming tunnel ventilation fans are installed in duct system at about 300 m interval and are run for about 1 hour after each blast. For 1 km length of tunnel ventilation fans are required at 4 places at 300 m interval. As the fans are installed progressively, for rate analysis consider average 2 fans for 1 hour. 5. Mucking excavated rock : Quantity of muck per blast considering 40 % bulkage ( 46 x 1.4 ) : 65 cum Capacity of dumper per load : 5 cum Quantity of muck per load considered under tunnel working conditions : 4.5 cum Loading cycle time: Moving from pocket position and spotting : 1 minutes Loading muck by convey mucker and work force : 20 minutes Time for loaded dumper to pass waiting point say : 1 minutes Cycle time of loading dumper per load of 4.5 cum : 22 minutes Haulage cycle time: Running time from loading point to dump yard at av. 10 km / hr : : 6 minutes Turning and unloading : 2 minutes Return trip to waiting av. 15 km / hr : 4 minutes Waiting time before spotting : 9 minutes Cycle time for haulage per load of 4.5 cum Total : 21 minutes Round trip cycle time of dumper say : 45 minutes Quantity of muck disposal per hour / dumper : 6 cum Time for 2 dumpers for conveying 12 cum per hour say : 6 hours Time for convey mucker and labour force for loading say : 6 hours 6. Overall cycle time : Checking alignment and marking hole locations : 2.00 hours Drilling holes : 7.00 hours Loading explosive and blasting : 2.00 hours Defuming and scaling loose rock fragments : 2.00 hours Mucking excavated rock : 6.00 hours Bed cleaning, Jumbo movements, rock bolting, lighting etc say : 4.00 hours Erection of temperary / permanent supports : 9.00 hours Total cycle of excavation & supporting / blast of 1.5 m length : hours 7. Requirement of materials : Explosive small dia ( ) : 41 kg Electric short delay detonators ( 77 x 1 ) : 77 Nos Electric detonators for secondary blasting ( 1 x 5 ) : 10 Nos 20
23 Fuse coil : 175 Rm 8. Requirement of machinery : Deploy drilling jumbo for various operations 11 hours ( marking holes 1 hr + drilling 7 hrs + loading explosives 2 hr + misc 1 hr ) Deploy air compressor 15 cmm for air supply to 4 jack hammers : 7 hours Deploy 4 jack hammers with pusher leg for drilling. : 7 hours Deploy 10 hp pump for water supply to drilling work. : 7 hours Deploy 20 hp ventilation fan for defuming ( 2 x 1 ) : 1 hour Deploy convey mucker for loading excavated rock : 6 hours Deploy 2 dumper for conveying muck : 6 hours 9. Requirement of workforce ( other than machinery crew ) : Surveyor for checking alignment and marking hole locations for drilling : 1 No. Foreman for supervising drilling of holes and other operations : 1 No. Fitter / Mechanic for extending air / water lines : 2 Nos. Blaster ( Licensed ) : 1 No. Helper blasting : 2 Nos. Hammerman for scaling : 2 Nos. Maistry 1 in each shift : 3 Nos. Khalasi for mucking shift : 4 Nos. Heavy mazdoor for mucking shift : 8 Nos. for other 2 shifts 1 No each shift : 4 Nos. Light mazdoor for cleaning & miscellaneous : 3 Nos. 10. Use rate of materials: Cost of drill rod 2.5 m `: / No. `: Life of drill rod with reconditioning : 150 m Use rate of drill rod per Rm drilling ( cost / life ) `: Length of air and water hose assumed : 25 m each Cost of 25 mm dia air hose 25 `: / Rm `: Life of air hose : 800 hours Use rate of air hose per hour ( cost / life ) `: 6.28 Cost of water hose 25 m `: / Rm `: Life of water hose : 800 hours Use rate of water hose per hour ( cost / life ) `: 5.78 RATE ANALYSIS UNIT : cum A. MATERIALS: Sl No Perticulars 1 Small dia explosive kg Delay detonators Nos Electric detonators Nos Detonating fuse coil Rm Use rate of drill rod 2.5 m long Rm Reconditioning 10% Use rate of air hose Hour in `. in `.
24 A. MATERIALS ( ) : Sl No Perticulars 7 Use rate of water hose Hour Sundries( paint / template etc ) LS Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for Contractor's 5% `: Total cost of Materials : `: B. MACHINERY: 1 Drilling jumbo Hour Fuel / Energy charges Hour Air compressor 15 cmm ( ele ) Hour Fuel / Energy charges Hour Jack hammer ( 4 x 7 hrs ) Hour Fuel / Energy charges Hour Pusher leg Hour Fuel / Energy charges Hour Convey mucker Hour Fuel / Energy charges Hour Dumper ( 2 x 6 hrs ) Hour Fuel / Energy charges Hour Pump 10 hp ( ele ) Hour Fuel / Energy charges Hour Ventilation fans 20 hp ( 2 x 1 hr ) Hour Fuel / Energy charges Hour Sundries(explosive van / magazine ) LS Total `: Add for small Tools and 1% `: Add for Contractor's Profit on DPOL / 10% `: Add for Contractor's 5% `: Total hire charges of Machinery : `: C. LABOUR: 1 Crew for Drilling jumbo Hour Crew for Air compressor Hour Crew for Jack hammer Hour Crew for Convey mucker Hour Crew for Dumper Hour Crew for Pump Hour Crew for ventilation fans Hour Surveyor Day in `. in `.
25 C. LABOUR ( ) : 9 Foreman Day Fitter / Mechanic Day Blaster ( Licensed ) Day Helper blasting Day Hammerman 2 Nos Day Maistry 1 in each shift Day Khalasi for mucking shift 4 Nos Day Heavy mazdoor for mucking shift 8 Nos Day for other 2 shifts 2 No each shift Day Light mazdoor for cleaning & miscellaneous Day Total `: Add for small Tools and 1% `: Add for Contractor's 10% `: Add for hidden cost on 15% `: Add for additional hidden cost on 10% `: Add for Contractor's 5% `: Total cost of Labour : `: ABSTRACT: A. Cost of Materials `: B. Hire charges of Machinery `: C. Cost of Labour `: TOTAL `: Add for Air and Water 0.80% `: Add for 5.80% `: Add for 1.80% `: Add for Ele sub-station / Demand 3.90% `: Add for other Enabling 1.70% `: Total cost for cum `: Rate per cum `: Rate approved per cum `: Note: Where mucking is to be carried out through vertical / inclined shaft using winch and mucking tub arrangement increase the basic rate per cum by 8.00 percent. SECTION: TUNNEL AND ALLIED WORKS. YEAR: ITEM No: WRD: 6.5 ITEM: Excavation for tunnel by heading and benching method of tunnelling including excavation for supports in all types of soil / rock strata requiring supports ( excluding cost of providing supports ) for roof before benching including cost of all other materials, machinery, labour, ventilation, lighting, drainage, scaling excavated surface, removing and hauling excavated muck outside tunnel upto specified dump area and all other ancillary operations etc., complete with lead upto 1 km and all lifts. 23
26 DATA:Size of tunnel assumed ( finished section ) : 4.50 m dia Shape of tunnel assumed for excavation : D - shape Height of tunnel assumed ( finished section ) : 4.50 m Length of tunnel assumed : 1000 m Thickness of CC lining : 0.30 m Extra excavation for supports : 0.25 m Pay-line margin assumed : 0.20 m Diameter of tunnel upto pay line for excavation : 6.00 m Distance of dump yard from face including approach / adit length : Average 1 km Haulage of excavated muck : By dumpers 1. Checking alignment and marking hole locations : Use drilling jumbo for 1 hour for marking hole locations. 2. Drilling holes : Pay line Heading portion Excavated profile Minimum Drill holes Benching portion excavation line TYPICAL CROSS SECTION OF TUNNEL FOR HEADING & BENCHING In case of tunnel, where the height is more or where the chances of over excavation due to full face blasting is more, the excavation will be generally carried out by heading and benching method. For week strata arch rib supports are also to be erected before benching. Excavation of arch portion is carried out first and the supports are fixed wherever necessary. Depth of hole and explosive charge per cum are also controlled to minimise over excavation. Assuming spacing of arch supports at 0.75 m interval the effective depth of pull per blast is considered at 1.5 m. The depth of hole for 1.5 m pull is considered at 1.7 m. Extra drilling considered at 10 percent for inclination of holes and for removal of any under cuts and for secondary blasting of large fragments during mucking. Heading portion : Area of excavation upto payline : sqm Depth of drilling : 1.70 m No. of holes considering 2.5 holes / sqm : 35 Nos. Depth of drilling for 35 holes ( 35 x 1.7 x 1.1 ) : 65.5 m Haunch portion on either side : Area of excavation upto payline : 2.60 sqm Depth of drilling : 1.70 m No. of holes considering 3 holes / sqm : 8 Nos Depth of drilling for 8 holes ( 8 x 1.7 x 1.1 ) : 15 m 24
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