WIDENING OF ACCESS ROAD AROUND SWTs AT BOTH ENDS OF RUNWAY AT AFS PHALODI

Excavation over areas n. exc 1.50 m deep and getting out soft/loose soil complete all as specified and as directed.

Removing excavated material exc. 50 m and upto a total distance of 250m and depositing where directed at a level n exc. 1.5m above the starting point complete all as specified and as directed.

Rolling consolidating for formation surfaces in cutting with power roller exceeding 8 tonne and not exceeding 12 ton to achieve 98% density if OMC modified proctor density complete all as specified and as directed.

Laying and compacting 150 mm thick in single layer (compacted thickness) Granular Sub Base Course (GSB) grading as per Grade II as specified Table 400-1 of MoRTH Specifications for Road and Bridge works, 2013, in a single layer over compacted subgrade with natural sand, crushed gravel, crushed stone, crushed slag or combination thereof as per the grading required. The materials are mechanically mixed, spread and leveling on the subgrade by using motor grader of adequate capacity, and rolling with vibratory roller of capacity 80-100 KN static weight for achieving required compaction density of atleast 98% of the Maximum Dry Density. Consolidating to required gradient and camber complete all as specified and directed with finished surface tolerances as per Table 900-1 of MoRTH specifications for Road and Bridge works, 2013 complete all as specified and directed.

Laying and compacting 150 mm thick (compacted thickness) Wet Mix Macadam (WMM) in two layers of 75 mm each, grading as per Table 400-13 of MoRTH specifications for Road and Bridge works 2013 manufactured in WMM plant material comprising of clean, crushed, graded aggregate and granular material premixed with water to a dense mass, spreading with paver and rolling with vibratory roller of capacity 80-100 KN static weight and consolidating to required gradient and camber complete all as specified and directed. The finished surface tolerances to be as per Table 900-1 of MoRTH specifications for Road and Bridge works 2013 complete all as specified and directed.

M&L for Providing and Laying Dry lean Concrete (DLC) 100 mm thick of aggregate gradation as per Table 1 of SP 49 : 2014 having 7 day average compressive strength not less than 7 MPa Minimum cement content not less than 140 Kg/Cum DLC mixed in Batching Plant, transported to site and laid by paver including spreading and compacting using high amplitude tamping bars paver (initial compaction) further by double drum smooth wheeled vibratory rollers with 80-100 KN static weight to achieve minimum dry density not less than 98% of maximum Dry Density. M&L with tolerances to be as per Table 900-1 of MoRTH specifications for Road and Bridge work 2013 complete all as specified and directed.

M&L for 10 mm thick sand cushion with clean river sand duly clear of residual, organic and deleterious materials spread evenly to uniform thickness laid over DLC layer as specified and directed. (No additional amount to be paid for overlap)

Supplying and laying 400 micron thick HDPE sheet (Virgin Quality) water proof, wrinkle free without puncture having minimum weight 390 gm/Sqm over tack coat/sand cushion as specified in the design with overlap between adjacent strips and at transverse joints as minimum 300mm complete all specified and directed

M&L for 200mm thick Pavement quality concrete (PQC) of minimum 28 days field Flexural strength cf 45Kg/ Sqcm or 4.5 Mpa, aggregate gradation as per Table 3 of IRC 15-2017, coarse aggregate of clean, hard strong, dense non-porous and durable pieces of crushed stone or gravel, fine aggregates of clean natural sand or crushed stone sand or combination of both using minimum 360 kg/cum of cement with non-circular virgin synthetic fibre of 12-18 mm length, specific gravity 1.34 to 1.39, UV stable, alkali resistant, with equivalent dia 15-40 micron, minimum melting temperature as 240°C and minimum tensile strength of 300 Mpa and at the rate as specified by the manufacturer. PQC laid, spread and compacted with paver of minimum 7.50 m width, including curing and timing by Texturing cum Curing Machine complete all as specified and directed. Required surface texturing to be done as specified in Clause - 10.1.14 and Table 9 of IRC-15-2017 complete all specified and directed.

M&L for forming 25 mm width expansion joint in concrete slab for full depth of PQC. Early entry saw and subsequent cutting by using diamond bit cutter of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and others debries. The joint then filled with pre molded 25mm thick compressible polyethylene closed cell type filler board as specified, thereafter application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. Placing of closed cell, medium density, crossed linked polyethylene foam backup rod of 30 mm dia, over filler board and filled with polyurethane based sealant complying with BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of +/- 30% having minimum 10 year performance guarantee, applying masked tape on the edges of joints and removing the masking tape after filling of sealant as per the method specified by the manufacturer complete as specified and directed.