Improvements to the 3 nos of roads (RC-7 Suthukeny road, RC-32 Thirukkanur road, Suthukeny to Lingareddipalayam road) in the jurisdiction of Buildings and Roads (North) Division, PWD, Puducherry in Mannadipet Commune, Puducherry (Package-II)

Amount

Dismantling of flexible pavements and disposal of dismantled materials upto a lead of 1000 metres, stacking serviceable and unserviceable materials separately - by mechanical means - bituminous courses

Excavation for roadwork in soil with hydraulic excavator of 0.9cum bucket capacity 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.

Construction of sub-base using lime-flyash admixture with granular soil, free from organic matter/ deleterious material or clayey silts and low plasticity clays having PI between 5 and 20 and liquid limit less than 25 and commercial dry lime, slaked at site or pre-slaked with CaO content not less than 50 percent, flyash to conform to gradation as per clause 4.3 of IRC:88-1984, lime + flyash content ranging between 10 to 30 percent, the minimum unconfined compressive strength and CBR value after 28 days curing and 4 days soaking to be 7.5 kg/sq.cm. and 25 percent respectively, all as specified in IRC:88-1984. (As per MoRTH specification, 4th Revision)

Construction of granular sub-base by providing coarse graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC and compacting with vibratory roller to achieve the desired density, complete as per clause 401 of MoRTH specification, 4th Revision - For grading I material.

Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the material with water at OMC in mechanical mix plant carriage of mixed material by tipper to site, laying in uniform layers with paver in sub-base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density - Using vibratory roller. (As per MoRTH specification, 4th Revision)

Providing and applying primer coat with bitumen emulsion on prepared surface of granular base including clearing of road surface and spraying primer at the rate of 0.60 kg/sqm using mechanical means. (As per MoRTH specification, 4th Revision)

Providing and applying tack coat with bitumen emulsion using emulsion pressure distributor at the rate of 0.20 kg. per sqm. on the prepared bituminous / granular surface cleaned with mechanical broom. (As per MoRTH specification, 4th Revision)

Providing and laying bituminous macadam with hot mix plant of capacity not less than 40 -60 TPH using crushed aggregates of specified grading premixed with bituminous binder, transported to site, laid over a previously prepared surface with paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 507.7 of MoRTH specification, 4th Revision, to achieve the desired compaction. - using grade II metal and bitumen 60/70 grade.

Providing and laying bituminous concrete with HMP of capacity not less than 40 to 60 TPH using crushed aggregates of specified grading, premixed with bituminous binder @ 5.4 to 5.6 percent of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per clause 509 of MoRTH specification, 4th Revision, complete in all respects - Using grade-II material.-Bitumen 60/70

Providing and laying of hot applied thermoplastic compound 2.5mm thick including reflectorising glass beads @ 250 gms per sqm area, thickness of 2.5mm is exclusive of surface applied glass beads as per IRC:35. The finished surface to be level, uniform and free from streaks and holes.

Providing and fixing 3m make reflective road studs of category 'A' raised pavement markers made out of poly carbonate / ABS moulded body and reflective panels with micro prismatic lens capable of providing total internal reflection of the light entering the lens face with retro reflectance and chromaticity values conforming to ASTM D4280. The reflective raised pavement makers shall also confirm the length, height and width of the body shall not be less than 100mm,15mm and 90mm and base of marker shall be flat within 1.3mm (3m equivalent). The marker shall support a load of 13635kg tested in accordance with ASTM D4280. Lenses shall be moulded of Polycarbonate or methyl methecrylate conforming ASTM D788. The area of each retro reflectory surface shall not be less than 13.0sq.cm. The slope or retro-reflectory surface shall be 35+5 degree to base. Each reflector shall have a CIL not less values specified in table 1 of said MORT & H circular and two cylindrical Polymer Shanks not less than 20mm diameter and not less than 30mm length shall be provided for better anchorage with bituminous grout or epoxy mortor, all as per MORTH circular

Providing and fixing of retro-reflectorised cautionary, mandatory & informatory sign as per IRC:67 made of aluminium sheet encapsulated lens with high intensity grade sheeting vide Clause 801.3, fixed over aluminium sheeting, 1.5 mm thick supported on a mild steel angle iron post 75mm x 75mmx6mm (3.5mtrs height-6.8kg/mtr = 23.8kg, with board support angle 35 x 35 x 6mm-2.30mtrs-3kg/mtr=6.9kg and anchor flat - 0.5kg) firmly fixed to the ground by means of properly designed foundation with M15 Grade cement concrete 45cm x 45cm x 60cm, 60cm below ground level as per approved drawing. - 60 cm equilateral triangle. (including cost of angle iron towards cost of drilling holes, nuts, bolts etc.,)

Providing and fixing of retro-reflectorised cautionary, mandatory & informatory sign as per IRC:67 made of aluminium sheet encapsulated lens with high intensity grade sheeting vide Clause 801.3, fixed over aluminium sheeting, 1.5 mm thick supported on a mild steel angle iron post 75mmx75mmx6mm (3.8mtrs height-6.8kg/mtr = 25.84kg with board support angle 35 x 35 x 6mm-2.8mtrs-3kg/mtr = 8.4kg and anchor flats - 0.5kg) firmly fixed to the ground by means of properly designed foundation with M15 Grade cement concrete 45cm x 45cm x 60cm, 60cm below ground level as per approved drawing-80cmx60cm rectangular. (including cost of angle iron towards cost of drilling holes, nuts, bolts etc.,)

Providing and erecting a "W" metal beam crash barrier comprising of 3mm thick corrugated sheet metal beam rail, 70cm above road/ ground level, fixed on ISMC series channel vertical post,150X75X5 mm spaced 2 m centre-to-centre,1.8 m high,1.1m below ground/road level, all steel parts and fittings to be galvanished by hot dip process, all fittings to conform to IS:1367 and IS:1364, metal beam rail to be fixed on the vertical post with a spacer of channel section 150X75X5mm, 330m long complete as per Clause 810.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work upto plith level - 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20mm nominal size)

Earth work in excavation by mechanical means (Hydraulic excavation) / manual means over areas (exceeding 30 cm in depth, 1.5m in width as well as 10sqm on plan) including getting out and disposal of excavated earth, lead upto 50m and lift upto 1.5m - all kinds of soil

Supplying and filling in plinth with river sand under floors, including watering, ramming consolidating and dressing complete.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work upto plith level - 1:4:8 (1 cement : 4 coarse sand : 8 graded stone aggregate 40mm nominal size)

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead upto 50m and lift upto 1.5m

Centring and shuttering including strutting, propping etc., and removal of form work for - retaining walls, return walls, walls (any thickness) including attached pilasters, buttresses, plinth and string courses fillets, kerbs and steps etc.

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor etc. upto floor five level, excluding the cost of centering, shuttering and finishing - 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20mm nominal size)

Providing and fixing prmoulded bitumen joint filler, for expansion joints including the cost of sealing compound and priming coat - 25 mm wide.

Providing weep holes in brick masonry / plain / reinforced concrete abutment, wing wall / return wall with 110 mm dia PVC pipe, 6kg/sq.cm extending through the full width of the structure with slope of 1V:20H towards drawing foce Complete as per drawing and technical specifications

Providing and laying of filter media with granular materials / stone crushed aggregates satisfying the requirements laid down Clause 2504.2.2. of MoRT&H specifications to a thickness of not less than 600 mm with smaller size towards the soil and bigger size towards the wall and provided over the entire surface behind abutment, wing wall and return wall to the full height compacted to a firm condition complete as per drawing and technical specifications.

N K Gunasekaran

K ARUNAGIRI & SONS

Kumaresan Constructions