PROVISION OF PQC ROAD ALONG WITH ALTERATION TO EXISTING MT RAMP TO RAISE HEIGHT OF MT SHED FLOORING AT CGDHQ 15 OKHA UNDER GE (I) CG PORBANDAR

Material & Labour for surface dressing not exceeding 15 cm deep and getting out in soft/loose soil, complete all as specified and directed by Engineer in charge.

Material & Labour for Hard-core of broken stone or boulders of gauge not exceeding 63mm, deposited, spread and levelled in layers n exc. 15 cm thick, watered and rammed to a true surface, complete all as specified and directed by Engineer in charge.

Material & Labour for cement concrete 100mm thick type D-2 1:4:8 (40mm graded aggregate) as in floor as in sub base for laying floor finishes, complete all as specified and directed by Engineer in charge.

Material & Labour for Sand filling under floors or in foundations including watering and consolidation, complete all as specified and directed by Engineer in charge.

Material & Labour for M-35 grade 60mm thick machine pressed precast concrete interlocking paver block any shape and size with grey cement and pigment confirming to IS 15658-2006, complete all as specified and directed by Engineer in charge.

Removing excavated material not exceeding 50 Metre and depositing where directed at a level not exceeding 1.5 Metre above the starting point, complete all as specified and directed by Engineer in charge.

Demolition of cement concrete un-reinforced in ground floor and paving not exceeding 15cm thick (below or above ground level), complete all as specified and directed by Engineer in charge.

Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area not exceeding 400 sqm, complete all as specified and directed by Engineer in charge.

Excavating over areas, not exceeding 1.5 Metre deep and getting out hard/dense soil, complete all as specified and directed by Engineer in charge.

Excavating in trenches not exceeding 1.5 Metre wide and not exceeding 1.5 Metre in depth, for foundation, etc., or for shafts, wells, cesspits, manholes, pier holes, etc., not exceeding 10 Sqm on plan and not exceeding 1.5 Metre in depth and getting out in any type of soil, complete all as specified and directed by Engineer in charge.

Material & labour for Providing and Laying Dry lean Concrete (DLC) 150mm 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 of 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 Road and Bridge work 2013, complete all as specified and directed by Engineer in charge.

Material & Labour for 10mm 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), complete all as specified and directed by Engineer in charge.

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 as specified and directed by Engineer in charge.

Pavement quality concrete(PQC) of minimum 28 days field Flexural strength of 45 Kg/ 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 12-18mm 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 Metre 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 - 10.1.14 and Table-9 of IRC' 15-2017, complete all as specified and directed by Engineer in charge. Note:- As per actual design report higher cement content should be consider. no price adjustment should be allowed for cement content.

Forming 25mm width expansion joint in concrete slab for full depth of PQC. Early entry saw and subsequent cutting by using diamond bit cutter 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 join 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 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 manufacture, complete all as specified and directed by Engineer in charge.

Material & Labour for Forming dummy/contraction joint with an initial saw cut Forming dummy/contraction joint with an initial saw cut of 3mm soon after the concrete has set, upto a depth of 1/3rd to 1 /4th the thickness of the slab, widening the first saw cut to 6mm and 24mm deep 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 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 8mm dia application of bond breaker tape on top of back up rod for complete width of the joint and filled with polyurethane based sealant complying with BS521 , 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 all as specified and directed by Engineer in charge.

Supply only polyester triangular fibres as secondary reinforcement in all types of concrete and mortars, complete all as specified and directed by Engineer in charge.

Formwork to edges of concrete flats, treads, breaks in floors, window cills, concrete railings, openings in concrete walls, floor and roofs not exceeding 20 cm wide and sides of RCC/ PCC bands in walls, horizontal or sloping and similar work exceeding 10cm but not exceeding 20cm wide rough finished, complete all as specified and directed by Engineer in charge.

Material & Labour for PCC 1:4:8 type D2 using 40mm graded stone aggregate as in foundation filling and mass concrete, complete all as specified and directed by Engineer in charge.

Material & Labour for providing Pre-cast cement concrete type C-1, 1:3:6 (20mm graded aggregate) block masonry with solid blocks, exc. 10cm in width and setting in cement mortar 1:6, complete all as specified and directed by Engineer in charge.

Material & Labour for rendering on fair faces of brick/stone work or concrete surface of wall 15mm thick in Cement Mortar 1:4 and to be finished even and smooth without using extra cement, complete all as specified and directed by Engineer in charge.

Material & Labour for preparation of new painted concrete surfaces of any description over 10 cm girth or width not otherwise described and applying two coat of synthetic enamel paint, complete all as specified and directed by Engineer in charge.

Material & Labour for Precast RCC 1:2:4 type B-1 using 20mm graded stone aggregate as in manhole cover slabs, of any thickness, size or shape including necessary form work, set and jointed in cement mortar (1:4), complete all as specified and directed by Engineer in charge.

Material & Labour for 100mm thick PCC 1:2:4, type B-1 (20mm graded aggregate), as in floor finished even and smooth without using extra cement and spike rolling to surfaces or making impressions of expanded metal, whilst the concrete in green finishing using, complete all as specified and directed by Engineer in charge.

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