Construction of RCC Retaining wall from km 9/830 to 10/065 (RHS) of NH 85 (Old NH 49 Extn) (Madurai - Cochin Road) on item rate contract in the state of Tamil Nadu

Amount

Construction of Subgrade and Earthen Shoulders (Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts & leads, transporting to site, spreading, grading to required slope and compacted to meet requirement of table No. 300-2)

By Mix in Place Method (Construction of granular sub-base by providing close 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) Grade III

By Mix in Place Method (Construction of granular sub-base by providing close 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) Grade V

Wet Mix Macadam laying using by Grader (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.)

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 0.7 kg/sqm using mechanical means

Tack Coat on Granular surfaces treated with primer (Providing and applying tack coat with bitumen emulsion using emulsion pressure distributor at the rate of 0.25 to 0.30 kg per sqm on the prepared bituminous surface cleaned with mechanical broom.)

Dense Graded Bituminous Macadam-I (Providing and laying dense graded bituminous macadam with higher capacity batch type HMP using crushed aggregates of specified grading, premixed with bituminous binder @ 4.0 per cent by weight of total 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 MoRTH specification clause No. 505 complete in all respects)

Bituminous Concrete Grading -II (Providing and laying bituminous concrete with higher capacity batch type hot mix plant using crushed aggregates of specified grading, premixed with bituminous binder @ 5.4 per cent 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 MORTH specification clause No. 507 complete in all respects) (30mm - 40 mm)

Providing fixing of Median marker double sided made of polycarbonate for impact resistance and good weather ability. Polycarbonate used for molding the median marker shall have a minimum Izod impact strength value of 600 J/m at room temperature. The impact strength of the poly carbonate should not decrease to less than 70% of its initial value on being subjected to UV weathering as per ASTM G 155 for 1000 hours or exposure to 2 years of natural weathering. The body of the median marker shall be in the form of an isosceles trapezoidal structure of length 15 cm height and width of 10 x 10 cm. The median marker shall have fluorescent yellow retro - reflective sheeting confirming to Tpe XI specifications as per ASTM D 4 956.Area of reflective sheeting should not be less than 70 cm2 .Edge of retro reflective shall be concealed using a grillJ mesh/ similar mechanism to prevent vandalism and sheeting pilferage. The logo of the manufacturer shall be embossed and painted in contrasting colour on both side of median marker for distinct identification.

Providing and Erecting of Retro - Reflectorised Hazard Marker Traffic Sign made out of High Intensity Prismatic Grade Sheeting confirming to Type-IV standards of IRC-67: 2012 and ASTM D 4956 —09, specification and fixed over 2mm thick Aluminium sheet fixed over a back supporting frame of 25mmx25mmx3mm Mild Steel angle and supported on a mild steel angle post 75X75X6mm and 0.60m below ground level. The sign post should be painted as per IRC 67-2012 and firmly fixed to the ground by means of properly designed foundation with MIS grade cement concrete 45cmX45cmX60cm size including cost and conveyance of all materials, equipment, Machinery and labour with all leads and lifts, loading charges necessary for satisfactory completion of the work as directed by the engineer in charge. High intensity Retro - Reflectro sheet shall consist of minimum coefficient of Retro-reflection as per Table 6.6 of IRC 67-2012. The retro- reflective sheeting shall be covered under 7 year warranty issued for field performance and a certified copy of three years outdoor exposure report shall be obtained as per IRC 67:2012. (as per MORT&H Specification No.801)

I. RCC Retaining Wall Dismantling of retaining walls and other structure comprising of Rubble stone masonry in cement mortar., including T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 metres)

Earthwork excavation in all classes of soil except hard rock requiring blasting and depositing on bank with all leads and lifts , including cost of all labour, equipments and all incidental charges such as baling our water, providing and maintaining necessary cofferdams, sheeting, shoring bracing and their subsequent removal, removal of all logs, stumps, grubs and other deleterious matter and obstructions, trimming bottom of excavation backfilling, and clearing the site and disposal of all surplus materials etc., complete as per relevant standard specification for Foundation of Retaining Wall

Plain Cement Concrete M 10 nominal mix 1:3:6 using 40mm ISS size HBG metal including cost and coveyance of all materials to site including cost and labour for form work , compacting curing and all other incidental charges baling out water etc complete for Leveling Course Retaining Wall

Vibrated Reinforced Cement Concrete of grade M25 design mix using ISS size HBG graded metal including cost and conveyance of all materials to site including cost of cement at site including cost of formwork, soft water, labour charges for mixing, transporting, laying and curing concrete , working at depths , tools and plants including all other incidental charges etc; complete as per relevant standard specifications, for RETAINING WALL. ( Below Sill)

Vibrated Reinforced Cement Concrete of grade M25 design mix using ISS size HBG graded metal including cost and conveyance of all materials to site including cost of cement at site including cost of formwork, soft water, labour charges for mixing, transporting, laying and curing concrete , working at depths , tools and plants including all other incidental charges etc; complete as per relevant standard specifications, for RETAINING WALL. (Above Sill Level)

Reinforced Cement Concrete Crash Barrier (Provision of an Reinforced cement concrete crash barrier at the edges of the road, approaches to bridge structures and medians, constructed with M-40 grade concrete with HYSD reinforcement conforming to IRC:21 and dowel bars 25 mm dia, 450 mm long at expansion joints filled with pre-moulded asphalt filler board, keyed to the structure on which it is built and installed as per design given in the enclosure to MOST circular No. RW/NH - 33022/1/94-DO III dated 24 June 1994 as per dimensions in the approved drawing and at locations directed by the Engineer, all as specified over retaining wall

Providing Filter media behind abutments and wings to 600 mm thick using clean graded materials of 53mm to 5.60mm and well compacted in layers with smaller size towards the soil and bigger size towards wall including cost and conveyance of all materials to work site including all labour charges and all other incidental charges etc complete as per standard specification.

Providing and fixing 100mm dia PVC seepage pipes of required length for abutment and wing , retaing wall including cost and conveyance of all materials to work site , cost and labour for semi spherical back fil arrangements with 100mm size broken granite stones at the periphery and labour charges for fixing etc complete to drain the back fil as per standard specification

Providing and fixing 20 mm thick fibre board expansion joint in between Regular Interval (20m) over Retaining Wall as shown in the drawing including cost and conveyance of expansion joints, Labour etc., as per MoRTH Vth Rev.2200(15 m interval )

Supply and fabrication of Fe-500 steel required for all RCC items of works involved in the schedule cost of steel at site fabrication,labour charges for cleaning the rods straightening, cutting, bending, tying grills, including overlapping to the required length whenever necessary and placing the reinforcement in position as specified in the drawings, including cost of binding wire, provision of spacer bars, cover blocks and all other incidental charges etc,complete, Fe-500 grade

Earth filling behind the Retaining Wall with avaiable cutting earth including cost and conveyance to site including labour charges for filling in layers, watering tamping under optimum moisture content to get the maximum density and all incidental charges etc., complete and as per MoRTH Specification 304. Using Available Foundation Cutting Earth(Toe Side)

Earth filling behind the Retaining Wall with avaiable cutting earth including cost and conveyance to site including labour charges for filling in layers, watering tamping under optimum moisture content to get the maximum density and all incidental charges etc., complete and as per MoRTH Specification 304. 95% Compaction(Heel Side)

SAL AND COMPANY

M/s. DSM BUILDERS