|CHAPTER : 3.0
EARTH WORK, EROSION CONTROL AND DRAINAGE
Excavation in Soil by Manual Means
Excavation for roadway in soil including loading in truck for carrying of cut earth to embankment site with all lifts and lead upto1000 metres as per clauses of section-300.
Excavation in ordinary rock by Manual Means
Excavation in ordinary rock including loading in a truck and carrying of excavated material to embankment site with all lifts and leads upto 1000 metres as per relevent clauses of section-300
|Note:-Item No.3.1 & 3.2 can be executed only after prior writen approval by C.E.|
|3.3||Excavation in Soil using Hydraulic Excavator and Tippers with disposal upto 1000 metres.
Excavation for roadwork in soil with hydraulic excavator including cutting and loading in tippers, trimming bottom and side slopes, in accordance with requirements of lines, grades and cross sections, and transporting to the embankment location with all lifts and lead upto 1000m as per relevent clauses of section-300 of specification.
|3.4||Excavation in Ordinary Rock using Hydraulic Excavator and Tippers with disposal upto 1000 metres.
Excavation for roadway in ordinary rock with hydraulic excavator including cutting and loading in tippers, transporting to embankment site with in all lifts and lead upto 1000 m, trimming bottom and side slopes in accordance with requirements of lines, grades and cross sections as per relevent clauses of section-300 of specification.
Excavation in Hard Rock with disposal upto 1000 metres
Excavation for roadway in hard rock with rock breakers i/c breaking rock or by drilling, blasting and breaking, trimming of bottom and side slopes in accordance with requirements of lines, grades and cross sections, loading and disposal of cut road with all lifts and leads upto 1000 metres and as per relevent clauses of section-300 of specification.
Excavation in Marshy Soil
Excavation for roadway in marshy soil with hydraulic excavator including cutting and loading in tippers and disposal with all lifts and lead upto 1000 metres, trimming of bottom and side slopes in accordance with requirements of lines, grades and cross sections and as per relevent clauses of section-300 of specification.
Removal of Unserviceable Soil with Disposal upto 1000 metres
Removal of unserviceable soil including excavation, loading and disposal upto 1000 metres lead but excluding replacement by suitable soil which shall be paid separately as per clause 305.
Scarifying Existing Granular Surface to a 50 mm by Manual Means
Scarifying the existing granular road surface to a depth of 50 mm and disposal of scarified material within all lifts and leads upto 1000 metres. (refer clause two of General Notes)
|3.9||Scarifying existing bituminous surface to a depth of 50 mm by mechanical means Scarifying the existing bituminous road surface to a depth of 50 mm and disposal of scarified material with in all lifts and lead upto 1000 metres||sqm||5.00|
Embankment Construction with Material Obtained from Borrow Pits
Construction of embankment with approved material having CBR>7 obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacting to meet requirement of table 300-1, 300-2 and as per relevent clauses of section-300.
Construction of Embankment with Material Deposited from Roadway Cutting
Construction of embankment with approved materials CBR>7 deposited at site from roadway cutting and excavation from drain and foundation of other structures graded and compacted to meet requirement of table 300-1, 300-2 and as per relevent clauses of section-300.
|3.12||Deduct for item No.3.10 and 3.11 above if vibratory roller / motor grader is not used with prior written approval of C.E.:|
|3.12.1 If static roller is used in place of vibratory roller.||cum||30.00|
|3.12.2 If motor grader is not used.||cum||30.00|
Surface Drains in Soil
Construction of unlined surface drains of average cross sectional area 0.40 sqm in soil to specified lines, grades, levels and dimensions to the requirement of clause 301 and 309. Excavated material to be used in embankment within a lead of 50 metres as per relevent clauses of section-300.
Sub Surface Drains with Perforated Pipe
Construction of subsurface drain with perforated pipe of 100 mm internal diameter of metal/ asbestos cement/ cement concrete/PVC, closely jointed, perforations ranging from 3 mm to 6 mm depending upon size of material surrounding the pipe, with 150 mm bedding below the pipe and 300 mm cushion above the pipe, cross section of excavation 450 x 550 mm. Excavated material to be utilised in roadway at site
Aggregate Sub-Surface Drains
Construction of aggregate sub surface drain 300 mm x 450 mm with aggregates conforming to table 300-4, excavated material to be utilised in roadway.
Construction of Rock fill Embankment
Construction of rock fill embankment with broken hard rock fragments of size not exceeding 300 mm laid in layers not exceeding 500 mm thick including filling of surface voids with stone spalls, blinding top layer with granular material, rolled with vibratory road roller, all complete as per clause 313
|3.17||Embankment Construction with Fly ash/Pond ash available from cum coal or lignite burning Thermal Plants as waste material. Construction of embankment with fly ash conforming to table 1 of IRC: SP: 58 -2001 obtained from coal or lignite burning thermal power stations as waste material, spread and compacted in layer of 200mm thickness each at OMC, all as specified in IRC: SP: 58-2001 and as per approved plans.