PROVN OF HARD STANDING (PQC) FOR PARKING OF SPECIAL VEHICLES FOR AMS AT AF STN BAGDOGRA

Amount

Rough excavation not exceeding 1.5 m deep and getting out any type of soil complete all as specified and directed.

Removing excavated material exc 250m but n exc. 500m and depositing where directed at a level n exc. 1.5 m above the starting point complete all as specified and directed.

M&L for Laying and compacting 150 mm thick (compacted thickness) Granular Sub Base Course (GSB) grading as per Grade I 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 levelling on the subgrade by using motor grader of adequate capacity, and rolling with vibratory roller of capacity 80-1 00 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.

M&L for Laying and compacting 150 mm thick (compacted thickness laid in two layers of 75 mm thick each) Wet Mix Macadam (WMM) grading as pe 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 sensor paver and rolling with vibratory roller of capacity 80-1 OOKN 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) 150 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 electronic sensor paver including spreading and compacting using high amplitude tamping bars o 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, necessary finishing etc complete all as specified and 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 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 a transverse joints as minimum 300mm complete all as complete all as specified and directed.

M&L for 10 mm thick sand cushioning 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) complete all as specified and directed.

M&L for Pavement quality concrete(PQC) of minimum 28 days field Flexural strength of 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 o gravel, fine aggregates of clean natural sand o 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 slip-form paver of minimum 7.50 m width, including curing and tinning by Texturing cum Curing Machine complete all as specified and directed. Required surface texturing to be done as specified in Clause , r r , 10 1 14 and Table~ 9 of IRC' 15-2017 complete all as 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. Join cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. The joint then filled with pre-moulded 25 mm 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 BS5212, 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 manufacture complete all as specified and directed.

M&L for Cutting of construction joints 25 mm deep and 10 mm wide by early entry saw cut using diamond bi cutter of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application o compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris 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 12 mm dia, application of bond break tape on top of back up rod for complete width of the joint and filled with polyurethane based sealant complying with BS-5212, BS 4254 and EN- 1418752003 with minimum movement accommodation factor (MAF) of +I- 30% having minimum 10 yea 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 all as specified and directed.

NOTES :- 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum.

SHRI P P SHARMA (BID ID -3491704)

SREE SWAPAN KUMAR GHOSH (BID ID -3491507)

M/S MANAS MITRA (BID ID -3491235)

M/S SWAPAN KUNDU (BID ID -3491408)

M/s Prakash Traders (BID ID -3491467)

MESSERS D S ENTERPRISE (BID ID -3491053)

NIRANJAN SARKAR (BID ID -3490804)

M/S P K ROY AND CO (BID ID -3491107)