PROVISION OF PQC PCC ROAD AT VARIOUS LOCATIONS UNDER CGDHQ 3 NEW MANGALORE

Amount

Excavation in trenches width not exceeding 1.5mtr and depth not exceeding 1.5metre for foundations, not exceeding 10 Sqm on plan for manholes etc and getting out in hard/dense soil, complete all as specified.

Returning filling in hard/dense soil including spreading levelling watering and well ramming in layers not exceeding 25 cm thick complete all as specified.

Removing excavated material (soils) to a distance 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 as directed.

M & L Surface dressing n exc 15 cm deep in hard/dense soil all as specified and as directed.

M & L Moorum/red bajri filling in floors or pavings laid in layers n exc 25 cm thick , spread, levelled and rammed including watering complete all as specified and as directed.

M & L Rolling & consolidating formation surfaces with 0.20 to 0.50 tonne hand roller all as specified and as directed.

M & L Preparing old black top surfaces by brushing with steel wire brushes for removing caked/mud etc, sweeping with brooms finally fanning the cleaned surfaces with mechanical hydraulic operated Air compressor device to remove all loose dirt etc complete all as specified and as directed.

M & L for Applying evenly a priming/tack coat with bituminous primer at 5 kg per 10 sqm using paving bitumen comptete all as specified and as directed.

M & L for Premix bituminous macadam with paving bitumen VG-30 as binder content not less than 4% by weight of total mix (exact quantity of binder content shall be determined by design mix by marshal method), laid with paver machine, rolled and compacted to required gradient and camber (consolidated thickness 75mm or less) complete all as specified and directed.

M & L Brushing neat cement slurry with 4.0 kg of cement per 10 sq. metre complete all as specified and directed.

M & L Pavement Quality Concrete (PQC) as in TWT (Thin White Topping) of minimum 28 days field Flexural strength or Modulus of rupture of the concrete 4.5 Mpa which corresponds to the minimum grade of concrete M40, Mix shall be designed as per IRC:44 or IS:10262, 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 slip-form paver SP-62 Writgen paver or equivalent of minimum 3.0 mtr width and locations were slip form paver is not feasible screed paver can be used with prior approval of AGE(I), including curing and tining 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

M & L Forming 25 mm width expansion joint in concrete slab for full depth of PQC/TWT all as pre IRC:57 2018. 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 other debris. The joint then filled with pre-molded 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 as specified and directed.

M & L Forming dummy (Contraction/Longitudinal) joints all as mentioned in IRC:57 2018, with an initial saw cut of 3 mm (within 6-18 hours of laying of TWT), upto a depth of 1/3 rd the thickness of PQC/TWT the slab, final saw cut to 6 to 10 mm and 1/3 rd the thickness of PQC/TWT of the slab 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. applying masked tape on the edges of joints and removing the masking tape after filling of sealing compound Grade "B" and heat resistant debonding strips as per the method specified by the manufacturer complete as specified and directed. Note:- i) The design of TWT is carried out by NIT Surathkal, Karnataka vide their letter No.NITK/CED/T&C/2025/197 dated 19 .07.2025 based on site data submitted by AGE(I) Mangalore. Executive clarification if required may be consulted from the designer and referred to AO.

M & L Cutting of construction joints 25 mm deep and 10 mm wide by early entry saw cut 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 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- 141875-2003 with minimum movement accommodation factor (MAF) of +I- 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 Note:- (i) Initially 3-5 mm wide joints may be cut within 6-18 hours (depending upon the grade of concrete being used and admixtures added) to a depth of 1/3 of the slab's depth. Timely joints cutting (within 6-18 hours of laying of TWT) prevents cracking, minimizes culing and warping stresses. (ii) The construction and execution of the (TWT) Thin White Topping should be as per IRC:SP:72-2015 and MORTH specifications.

Fixing only of i.e except tiles of 60 mm thick machine pressed precast concrete paver block any shape & size confirming to IS 15658-2006 of M-35 grade with grey cement and pigment etc all as specified.

S&F of 60 mm thick machine pressed precast concrete inter locking paver block any shape & size confirming to IS 15658-2006 of M-35 grade with grey cement and pigment etc all as specified.

Dismantling Stone slabs and tiles of any description or thickness in floors, aprons etc

M&L for 150 mm thick Plain Cement Concrete Type D2 1:4:8 (using 40 mm graded stone aggregate) as in sub base, in floor complete all as specified

M & L for sand filling under floors or in foundations including watering and consolidation etc all as specified.

M&L for Providing and laying at or near ground level factory made kerb stone of M-25 grade cement concrete in position to the required line, level and curvature, jointed with cement mortar 1:3 (1 cement: 3 coarse sand), including making joints with or without grooves (thickness of joints except at sharp curve shall not to more than 5 mm), including making drainage opening wherever required complete all as specified and directed.

M&L preperation of new concrete surfaces and applying two coats of synthetic enamel paint over a coat of primer for road marking centre line, stope line, dashes, arrows all as specified and as directed.

Supply and fixing cat eye solar reflective type of metal body alloy of size 100mm x 100mm x 20mm with PAMA striplens reflector fixed with and including MS stud of suitable size as per manufactures instructions

S&F Rubber Speed breakers/rubber rumbler of height 75mm, width 500mm, length 425mm made of premium quality natural and synthetic rubber blend with high resistance to impact weather, moisture and temperature. Reflector and glass elements are fixed on both sides of the rubber bumbs for better night vision available with pre colour materials of yellow and as specified

M&L for Plain cement concrete (1:4:8) type D-2 (using 40mm graded crushed stone aggregates) as in foundation mass concrete filling complete all as specified and as directed.

M&L for mild steel TMT bars 10mm dia and over cut to length, bent to shape required including cranking, bending spirally for hooping for columns & binding with and including mild steel wire (annealed ) not less than 0.9 mm dia in reinforcement for dowels bars for (TWT) Thin White Topping etc complete all as specified and as directed..

YP INFRA (BID ID -3438336)

GOVARDHAN AND COMPANY (BID ID -3438361)

Suneetha Engineers and Contractors (BID ID -3438414)

pk janardhanan (BID ID -3443301)