Providing and laying GSB, WMM and 25mm thick OGPC in link road to Heart Foundation.

Amount

Preparation of subgrade by excavating earth to an average of 22.5 mm depth, dressing to camber and consolidation with road roller including making good the undulation etc. and disposal of surplus earth upto 50 metres. Take Qty @ 50%

Construction of Granular Sub-Base (GSB) by providing close graded material conforming to specifications mixing in a mechanical mix plant at OMC ,carriage of mixed material by tipper to work site, for all leads and lifts, spreading in uniform layer of specified thickness with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per specifications and directions of engineer-in- charge. With material conforming to Grade–I (size range 75mm to 0.075mm)having CBR value-30

Providing , laying , spreading and compacting graded stone aggregate (size range 53mmto 0.075mm) to wet mixed macadam WMM specifications including premixing the material with water at OMC mechanical mix plant , carriage of mix materials by tippers to work site, for all leads and lifts, laying / spreading in uniform layers with mechanical paver finisher in sub base /base course on well prepared surface and compacting with vibratory power roller of 8 to 10 tonne capacity to achieve the desire density, complete as per specifications and direction of engineer incharge.

Providing and applying tack coat using bitumen emulsion(Rapid Setting) complying with IS cleaning and preparing the existing road surface as per specifications8887- 1995 spraying the bitumen emulsion with mechanically operated spray unit ,cleaning and preparing the existing road surface asper specifications.

25 mm thickopen graded premix carpet OGPC surfacing with 2.25 cum and 1.12 cum of stone chippings of 13.20 mm and 11.20 mm size respectively per 100 Sqm and 52 kg and 56 kg of hot bitumen per Cum of stone chippings of 13.20 mm and 11.20 mm size respectively including a tack coat with hot straight run bitumen including consolidating with road roller of 6 to 9 tonne capacity etc complete. ( Tack coat to be paid seperately). With paving Asphalt 80/100 heated then mixed with solvent at the rate of 70 grams per kg of Asphalt.

Providing and laying seal coat of premixed fine aggregate (passing 2.36 mm and retained on 180 micron sieve) with bitumen using 128 kg of bitumen of grsde 80/100 bitumen per cum of fine aggregate and 0.60 cum of fine aggregate per 100 sqm of road surface including rolling and finishing with road all complete.

Earth work in rough excavation, banking excavated earth in layers not exceeding 20 em in depth, breaking clods, ,- watering, rolling each layer with half tonne roller or wooden Lor steel rammers, and rolling every third and top -most layer with power roller of minimun 8 tonnes and dressing up in embankments for roads, flood banks, marginal banks and guide banks or tilling up ground depressions lead upto 50 mtr and lift upto 1. 5 mtr. in : All kinds of soil: Berm Filling

Carriage of Earth for an average lead of 5 km for Berm Filling.

M/S TASHI ANGCHUK