Repairs to road from Kolad RUB to Kundalika II bridge parallel to the track at km10/3-10/8 in between Roha - Kolad section under SSE/Works/CHI Section in Ratnagiri Region of Konkan Railway in the State of Maharashtra

16.36Providing and laying Bitumen Penetration Macadam with hard stone aggregate of quality, size and grading as specified, with bitumen of suitable penetration grade, including required key aggregate as specified, spreading coarse aggregate with the help of self-propelled/ 1 tipper tail mounted aggregate spreader and applying bitumen by a pressure distributor and then spreading key aggregate with the help of aggregate spreader complete, including consolidation with road roller of minimum 8 to 10 tonne capacity to achieve specified values of compaction and surface accuracy : 16.36.2For 75 mm compacted thickness in two layers using stone aggregate of size 63-41 mm graded @ 0.90 cum per 10 sqm key aggregate of size 20.0 mm graded @ 0.18 cum per 10 sqm. With paving asphalt grade VG -10 @ 68 kg/ 10 sqm.

16.30Providing and applying tack coat using hot straight run bitumen of grade VG - 2 10, including heating the bitumen, spraying the bitumen with mechanically operated spray unit fitted on bitumen boiler, cleaning and preparing the existing road surface as per specifications : 16.30.2On bituminous surface @ 0.50 Kg / sqm

16.35 2.5 cm premix carpet surfacing with 3 cum of stone chippings 10 mm nominal 3 size per 100 sqm and bitumen emulsion (medium setting min. 65% bitumen contents) complying with IS: 8887, using 96 kg per cum of chippings of road surface, including consolidation with road roller etc complete.

16.41Providing and laying seal coat over prepared surface of road with bitumen 4 heated in bitumen boiler fitted with the spray set spraying using 98 kg of bitumen of grade VG - 10 and blinding surface with 0.90 cum of stone aggregate of 6.7 mm size (Passing 11.2 mm sieve and retained on 2.36 mm sieve) per 100 sqm of road surface, including rolling and finishing with power road roller all complete. Note: Seal coat items to be operated only with the prior approval of chief Engineer concerned. Above/

4.2Providing and laying cement concrete in retaining walls, return walls, walls (any 1 thickness) including attached pilasters, abutments, pillars posts, struts, buttresses, parapets, coping, bed blocks, anchor blocks, sunken floor etc., upto floor five level, excluding shuttering and finishing. 4.2.31:2:4 (1 Cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20mm derived from natural sources)

4.3Centering and shuttering including strutting, propping etc. and removal of form work for: 4.3.2Retaining walls, return walls, walls (any thickness) including attached pilasters, butresses, plinths and string courses fillets curbs and steps etc.