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| 1 | PART-I (BRIDGE PROPER CHHIMTUIPUI RIVER AT KM6.490) |
| 2 | Design and construction of 282.00 mtr long multi span (47+94+94+47) PSC Balanced Cantilever Box Girder Bridge on well foundation over Chhimtuipui river including Proof check of design & drawings from IIT, conducting SSI for design aspect at km 6.490 on Hinathial-Sangau-Saiha Road under 71 RCC/ 24 BRTF/ Project Pushpak in Mizoram State as per NIT drawing based on hydraulic data, ground data, sub soil data, Special conditions and Particular specifications of the ternder document. Construction work includes all preparatory works, errection of staging/shuttering, abutments, piers return wall, placing of POT & POT cum PTFE bearings, superstructure with RCC decking, wearing coat having no skid surface in uniform thickness, strip seal expansion joints, RCC crash barriers, footpaths, kerbs, hand rails, drainage spout, load testing of superstructure of bridge, service arrangement for utilities and diversion and all other items required and necessary for complete construction of the bridge including curing, approaches and approach slab.Drg No B-2165/RBAT Dte/Psk/2021 dated 11 Nov 202, Sheet No. 1 |
| 3 | Formation works |
| 4 | Jungle clearance including cutting down trees not exceeding 30 cm girth measured at 1 meter above ground level & clearing away shrubs, brushwood, under growth & grubbing up roots in areas having annual rain fall above 200 cm |
| 5 | Rough excavation in soil/soil mixed with small boulders, getting out and disposing all excavated material lead upto 3 m and upto 1.5 m deep (75% machine and 25% by manual labour) |
| 6 | Earth in embankment by filling with earth free from roots etc. spreading in layers not exceeding 30cm including watering and finishing to required slope & level not exceeding 1.5m high above the base in ordinary soil in hill roads where cut & fill method is adopted. |
| 7 | Permanent Works |
| 8 | Excavation in trenches not exceeding 1.2 m width and 1.5 m depth in soil / soil mixed with boulders, including dressing bottom and sides getting out and disposing all excavated materials lead upto 1.5 m. |
| 9 | Hard core comprising of broken road metal size 5 cm graded downwards spread in layers not exceeding 15 cm including watering,ramming and finishing to required level and gradient including cost of stone metal. |
| 10 | Cement concrete (1 cement : 4 sand : 8 stone aggregate of size 4 cm graded downward) in foundation or elsewhere. |
| 11 | Cement concrete (1 cement : 3 sand : 6 stone aggregate of size 4 cm graded downward) in foundation or elsewhere in false wks |
| 12 | Cement concrete (1 cement : 2 sand : 4 stone aggregate of size 2 cm graded downward) in false wks |
| 13 | Reinforced cement concrete M-20 nearly corresponding to nominal mix, 1cement: 1.5 sand: 3 stone aggregate of size 20 mm grade downword.(excluding the cost of reinforcement & centering/shuttering) |
| 14 | Centering/Shuttering (Steel) including strutting, propping and removal of formwork (considering 10 times to be used) |
| 15 | Layingreinforcement including cutting bending binding providing hooks overlaps etc bars upto 12 mm(labour only) |
| 16 | Layingreinforcement including cutting bending binding providing hooks overlaps etc bars above 12 mm(labour only) |
| 17 | Reinforced Cement concrete M-35 nearly corresponding to nominal mix, (excluding the cost of reinforcement & centering/shuttering)in Approach Slab |
| 18 | Filling of stones / selected materials in layers well packed behind retaining walls, breast walls, abutment / wing walls of bridges or culverts (labour and material only) and as plumb stones in false wks |
| 19 | Cost of steel |
| 20 | Providing and laying of weep holes of size 4\"\"X4\"\"X1 Mtr using PVC pipe 4\"\" dia |
| 21 | Providing and erecting a \"W\" metal beam crash barrier comprising of 3 mm thick corrugated sheet metal beam rail, 70 cm above road/ground level, fixed on ISMC series channel vertical post, 150x75x5 mm spaced 2 mtr centre- to- centre, 1.80 mtr high, 1.10 mtr below ground/road level, all steel parts and fitments to be galvanised by hot dip process, all fittings to conform to IS:1367 and IS:1364, metal beam rail to be fixed on the vertical post with a spacer of channel section 150x75x5 mm, 330 mm long complete as per clause 810 of MoSRT&H specifications. |
| 22 | Earth in embankment by filling with earth free from roots etc. spreading in layers not exceeding 30cm including watering and finishing to required slope & level not exceeding 1.5m high above the base in ordinary soil in hill roads where cut & fill method. |
| 23 | Surfacing Works |
| 24 | Preparation of sub-grade in SMB by excavating upto 20 cm avg depth, dressingexcavated earth to required camber or super elevation and consolidating with power roller incl watering & disposal of surplus earth within a lead of 30 mtr. |
| 25 | GSB 15 cm thick (consolidated) with stone aggregate confirming to grade No 1 as per Table: 400-6 and 400-8 of MOST specifications for road and bridges works including supply of material, watering and consolidation of complete. |
| 26 | Providing, laying, spreading and compacting graded stone aggregate grading as per Table-400-13 and satisfying the physical reqmt as per Table No. 400-12 of MORT&H specifications for WMM specifications to a thickness of 100 mm, including premixing the material with water to OMC in mechanical mix (Pug Mill) laying in uniform layers in sub base/base course on a well prepared base and compacting with power vibratory roller to achieve the desired density including guarding. |
| 27 | Providing, laying, spreading and compacting graded as per table -400-13 and satisfying the physical requirement as per the Table No. 400-12 of MORT&H specification for WMM specifications to a thickness of 75 mm, including premixing the material with water to OMC in mechanical mix (Pug Mill) lying in uniform layers in sub base/base course on a well prepared base and compacting with power vibratory roller to achive the desired density including guarding. |
| 28 | Providing and laying 50 mm thick DBM layer, precoated stone aggregate physical requirements/grading/mix composition requirement as per Table - 500-8/9/10 respectively of MORT&H specifications for road and bridge works with 4.250% asphalt VG-10 penetration grade as per MoSRT&H data book and rolled to the required specification. |
| 29 | Providing and applying primer coat with bitumen emulsion on prepared surface of granular base including clearing of road surface and spraying primer@ 7.50 Kg per 10 sqm. (using BPD with manual labour) |
| 30 | Providing and applying tack coat with bitumen VG-10 using bitumen pressure distributor @ 2.5 Kg/10 Sqm on prepared bituminous/granular surfacecleaned with mechanical broom, all complete as per clause 503 of MoSRT&H specifications. |
| 31 | Providing and laying 30 mm thick bituminous concrete layer with precoated stone chips grading confirming to Table:500-17 and mix satisfying the physical requirementt of table 500-16 of MORT&H specifications, mixed with 5% binder asphalt VG-10penetration grade by weight of total mix and 2% cement by weight of mix ( for filler) all as specified as per MoSRT&H data book |
| 32 | Earth in embankment by filling with earth free from roots etc. spreading in layers not exceeding 30cm including watering and finishing to required slope & level not exceeding 1.5m high above the base in ordinary soil in hill roads where cut & fill method. |
| 33 | Road marking with thermo plastic paint 2.5 mm thick confirming to clause 803.4 of MoRT&H specification |
