REPAIRS AND RECONSTRUCTION OF RETAINING WALL AND ALLIED SERVICES AT VARIOUS LOCATIONS IN BIRCHGUNJ MIL STATION, PORT BLAIR (PARA - 35)

Amount

Material and labour for cutting of bushes, grass and tree branches etc, along slopes/plain ground all incl removal of debris n.exc 50m all as specified and as directed by Engg-in-Charge.

Surface excavation not exceeding 30 cm deep and averaging 15 cm deep and getting out in soft/loose soil surfaces complete all as specified and directed.

Excavation over areas not exceeding 1.5 metre deep and getting out in soft/loose soil complete all as specified and directed.

Excavating over areas exceeding 1.5 m depth but not exceeding 3.0 m depth and getting out in hard / dense soil complete all as specified and directed.

Rough excavation not exceeding 1.5 m deep and getting out soft/loose soil complete all as specified and directed.

Rough excavation exceeding 1.5 m deep but n.exc 3m depth and getting out hard/dense soil complete all as specified and directed.

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m depth; for foundations, laying of pipe and cables etc or for shafts, well cess pits, manholes, pier holes not exceeding 10 sqm on plan, including dressing/trimming sides and levelling/grading and ramming bottom of excavation and getting out in soft/loose soil complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 20 cm thick in any type of soil complete all as specified and directed.

Removing excavated material (soils) to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and directed.

Removing excavated material (soils) exceeding 250 m but not exceeding 500 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and directed.

Dismantling floor hearth tile including cement mortar bedding (but not backing coat) and including removing rubbish off the premises to a distance of not exceeding 50 m inside MoD land complete.

Demolition of cement concrete in ground floors and pavings n exc 15 cm thickness (below or above ground level) complete and remove the debries out of site as directed by Engr-in-Charge.

Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area not exceeding 400 Sqm and not exceeding 50mm depth including removing to a distance not exceeding 50m complete all as specified and as directed by the Engineer-in-Charge.

Rolling and consolidating formation surfaces in cutting including watering as necessary, filling in the depressions with approved earth which occur during the process, with 8 to 12 tonne power roller, consolidating to required gradient and camber complete all as specified and directed.

Material and labour for soling (or sub base) 200 mm thick (spread thickness), in two layers of 100 mm thickness each, with broken boulders or quarried stone, interstices filled, surface formed and rolled and consolidated with 8 to 12 tonne power roller to required gradient and camber complete all as specified and directed.

Material and labour for 150 mm thick (compacted thickness) WBM, in two layers of 75 mm thickness each, with granite, trap or basalt coarse aggregate of grading 2 (63 to 40 mm size) spread, rolled and consolidated with 8 to 12 tonne power roller to required gradient and camber complete all as specified and directed.

Material and labour for preparing unsurfaced water bound macadam surfaces with wire brushes for removing caked mud etc. sweeping with brooms and finally fanning the cleaned surface with gunny bag to remove all loose dirt etc. and applying evenly a tack coat with bituminous primer using paving bitumen grade VG-10 at the rate of 10 Kg per 10 Sqm complete all as specified and directed.

Material and labour for bituminous premixed semi dense asphaltic concrete, 40 mm consolidated thickness, using paving bitumen of Grade VG-30, with 5.5% of binder content by weight of total mix, mixed using mini Hot Mix plant, laid manually, rolled and compacted with power road roller of 8 to 12 tonne capacity to required camber and gradient complete all as specified and as directed by the Engineer-in-Charge.

Supply only bitumen binder grade VG-30 as approved all as specified and as directed. Note :- The item shall be operated for any variation in the qty of bitumen from the standard design mix with 5.5% binder content.

Material and labour for cement concrete 1:2:4, type B1, using 20 mm graded stone aggregate as in foundations and mass concrete complete all as specified and directed by Engr-in-charge.

Material and Labour for precast cement concrete solid block masonry with solid blocks using cement concrete 1:3:6, type C1 (using 20mm graded stone aggregate), exceeding 10 cm in width, set in cement mortar 1:4 complete all as specified and directed.

Material and labour for hard core of of gauge not exceeding 63 mm, deposited, spread and levelled in layers not exceeding 15 cm thick, watered and rammed to a true surface complete all as specified and directed.

Material and labour for 100 mm thick cement concrete 1:4:8, type D2, using 40 mm graded crushed stone aggregate as in sub base to concrete pavement complete all as specified and directed.

Material and labour for chequered cement concrete tiles 200 mm x 200 mm x 25 mm size with grey cement set and jointed in neat cement slurry and pointed in coloured cement to match colour the colour of tiles as approved by GE, over and including a layer of screed bed 20 mm thick, in cement mortar 1:6 complete all as specified and directed by Engr-in-Charge.

Material and labour for 50 mm thick sand filling including watering and consolidation complete all as specified and as directed by the Engineer-in-Charge.

Material and labour for machine pressed precast concrete interlocking paver block of any shape and size confirming to IS- 15658- 2006 of 60 mm thickness, M-35 Grade. with grey cement and pigment, colour as approved by GE complete all as specified and directed by Engr-in-Charge.

Refixing in position machine pressed precast concrete interlocking paver block of any shape and size 60mm thick complete all as specified and directed by Engr-in-Charge. Note :- Good quality of tiles obtained from item No. 11 above shall be re-used under this

Material and Labour for factory made under hydraulic moulding machine Precast Plain Cement Concrete 1:1½:3, type A-1 (using 20 mm graded stone aggregate) in kerbs stones, M-20, conforming to IS 5758-1984 including weathering slightly rounded or chamfered angles and throating etc set in cement mortar 1:4 complete including necessary form work complete including painting with two coats of Ist quality synthetic emamal paint all as specified and directed by Engr-in-Charge

Material and labour for cement concrete 1:4:8, type D2 using 40 mm graded stone aggregate as in foundations and mass concrete complete all as specified and directed by Engr-in-charge.

Material and labour for reinforced cement concrete Grade M-30 (design mix) using maximum 20mm graded stone aggregate as in foundations, including pile cap, rafts, footings, foundation beams; plinth beams; bases for columns, etc; basement slabs, under reamed piles and mass concrete complete all as specified and directed.

Material and labour for reinforced cement concrete Grade M-30 (design mix) using maximum 20mm graded stone aggregates as in walls, retaining walls, basement walls, ballast walls and the like; any thickness; above top of footings; including attached pillasters and buttresses complete all as specified and directed.

Material and labour for mild steel TMT bars 10 mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9 mm dia or securing with clips complete all as specified and directed.

Use and waste of steel formwork to sides of concrete foundations, footings, bases of columns, raft and raft beams, sides and soffits (if any) of foundation and plinth beams; and similar work; vertical or to batter for rough finished surfaces of concrete complete all as specified and directed.

Use and waste of steel formwork to to faces of walls, retaining walls, abutments, parapets and staircase railings and similar work including attached pillasters, buttresses, etc., vertical or to batter for rough finshed surfaces of concrete complete all as specified and directed.

Use and waste of steel formwork to to faces of walls, retaining walls, abutments, parapets and staircase railings and similar work including attached pillasters, buttresses, etc., vertical or to batter for fair finshed surfaces of concrete complete all as specified and directed.

Material and labour for PVC (SWR) pipes 110 mm dia single socketed in any length as in weep holes complete all as specified and directed.

Material and labour for loose filling of aggregates of gauge of 40 to 80mm in back side of weep holes of retaining wall complete all as specified and directed.

Material and labour for Rough excavation in any type of soil not exceeding 1.5 m deep and getting out complete as per direction of the Engineer-in- Charge

Material and labour for Rough excavation in any type of soil exceeding 1.5 m and n.exc 3.0m deep and getting out complete as per direction of the Engineer-in- Charge

Material and labour for Rough excavation in any type of soil exceeding 3 m and n.exc 4.5m deep and getting out complete as per direction of the Engineer-in- Charge

Material and labour for Rough excavation in any type of soil exceeding 4.5m and n.exc 6.0m deep and getting out complete as per direction of the Engineer-in- Charge

Removing excavated material to a distance exc. 1.50 km but n exc. 5 km and depositing where directed

Removing excavated material to a distance exc 50m but n exc. 500m and depositing where directed Note:- Soil obtained from rough excavation shall be used for backfilling if find suitable after testing.

Backfilling (structural fill) behind Gabion fascia and green fascia units of Reinforced soil structure with fill material obtained within the defence area (not more than 8 km lead from the project site) including excavation, removal, transportation to project site and compaction of soil using mechanical compactors to achieve density greater than or equal to 95% of Modified Proctor Test value for every 10 to 20 cm of fill all as specified and as directed by Engg-in-Charge site Note :- (1) Consolidation shall be done by suitable mechanical machinery to obtain the specified standard proctor density under optimum moisture conditions. (2) Deduction shall be done 5 percent of compacted volume for payment.

Backfilling (structural fill) behind Gabion fascia and green fascia units of Reinforced soil structure with fill material obtained within the defence area (not more than 500m lead from the project site) including excavation, removal, transportation to project site and compaction of soil using mechanical compactors to achieve density greater than or equal to 95% of Modified Proctor Test value for every 10 to 20 cm of fill all as specified and as directed by Engg-in-Charge site Note :- (1) Consolidation shall be done by suitable mechanical machinery to obtain the specified standard proctor density under optimum moisture conditions. (2) Deduction shall be done 5 percent of compacted volume for payment.

Material and Labour for Providing and laying in-situ vibrated 1:3:6 grade type C2 cement concrete using 40 mm down approved, clean, hard graded aggregates for plain concrete works including all materials, cost of centring and shuttering complete all as specified and directed by Engr-in-Charge.

Material and Labour for Providing and laying of Geosynthetic drainage composite with two filtering non-woven geotextile having a W configuration as longitudinal parallel channels. Minimum thickness to be 7.2mm, with two filtering UV stabilized polypropylene non-woven geotextile of minimum thickness 0.75mm having pore size of 110 micron and tensile strength of 8kN/m and having plane flow capacity of 2.1L/(m.s) at a hydraulic gradient of 1.0 and 20.0 kPa pressure, tensile strength of 18kN/m, with mass per unit area of 740gsm complete all as specified and directed by Engr-in-Charge.

Supply of green fascia system assembled with biodegradable erosion control blanket, welded mesh panel and integrated tail as reinforcement of length 2m that is made of mechanically woven, double twisted, hexagonal shaped steel wire mesh, mesh type 10X12cm, mesh wire dia 2.7/3.7mm (ID/OD), Zn+ 10% Al alloy + polymer coated , mechanically edged/selvedged units provided with 3 numbers of steel tie rods or triangular brackets connected at site, size of unit 3mx3mx0.58m (LxBxH). The height of unit considered as 0.58m is tentative. The actual height of unit may be provided between 0.58 to 0.63m as per manufacture recommendation/ standard size available .

Material and Labour for Gabion structure with Mechanically Woven Double Twisted Hexagonal Shaped Wire mesh Gabion Boxes of size 2mx1mx0.5m (LxBxH) as per IS 16014:2012, MORTH Clause 2500, of required size, Mesh Type 10x12cm (D=100 mm with tolerance of ±2%), Zinic+10% Al alloy + PVC coated (Zn with polymer coating shall be provided if better polymer is available without any extra cost implication), Mesh wire diameter 2.7/3.7mm (ID/OD), mechanically edged/ selvedged with partitions at every 1m interval and shall have minimum 10 numbers of openings per meter of mesh perpendicular to twist, tying with lacing wire of diameter 2.2/3.2mm(ID/OD), supplied @3% by weight of Gabion boxes, filled with boulders , as per drawing complete all as specified and directed by Engr-in-Charge. Note:- The boulder shall be measured and paid separately in respective items.

Material and Labour for Gabion structure with Mechanically Woven Double Twisted Hexagonal Shaped Wire mesh Gabion Boxes of size 2m x 1m x 1m (LxBxH) as per IS 16014:2012, MORTH Clause 2500, of required size, Mesh Type 10x12cm(D=100 mm with tolerance of ±2%), Zinic+10% Al alloy + PVC coated (Zn with polymer coating shall be provided if better polymer is available without any extra cost implication), Mesh wire diameter 2.7/3.7mm (ID/OD), mechanically edged/ selvedged with partitions at every 1m interval and shall have minimum 10 numbers of openings per meter of mesh perpendicular to twist, tying with lacing wire of diameter 2.2/3.2mm(ID/OD), supplied @3% by weight of Gabion boxes, filled with boulders , as per drawing complete all as specified and directed by Engr-in-Charge. Note:- The boulder shall be measured and paid separately in respective items.

Supply only stone boulders of size exceeding 200mm and n. exc 300mm for filling dry, hand packed tightly, as in Wire mesh Gabion Boxes all as specified and as directed by Engineer-in-Charge. (Note:- 1. Wire mesh Gabion Boxes shall be measured and paid separately 2. The net quantity of boulder shall be measured for payment purpose after deducting 30% for voids).

Supplying and laying high strength flexible geogrids (HSFG) as soil reinforcement / basal reinforcement as per MORTH 3100 and IRC 113, made of high tenacity polyester core with polyethylene coating with Minimum Long Term Design Strength (LTDS) of more than 50% of ultimate tensile strength at 30 degree Celsius corresponding to 12 % strain of Gabion boxes, filled with boulders with least dimension of 200 mm, all as per drawing, all complete as per directions of Engineer in charge for having Long term design strength (LTDS) not less than 59kN/m Note : Boulders shall be measured and paid seperately under item No 52 above.

Supplying and laying high strength flexible geogrids (HSFG) as soil reinforcement / basal reinforcement as per MORTH 3100 and IRC 113, made of high tenacity polyester core with polyethylene coating with Minimum Long Term Design Strength (LTDS) of more than 50% of ultimate tensile strength at 30 degree Celsius corresponding to 12 % strain of Gabion boxes, filled with boulders with least dimension of 200 mm, all as per drawing, all complete as per directions of Engineer in charge for having Long term design strength (LTDS) not less than 92 kN/m Note : Boulders shall be measured and paid seperately under item No 52 above.

Supplying and laying high strength flexible geogrids (HSFG) as soil reinforcement / basal reinforcement as per MORTH 3100 and IRC 113, made of high tenacity polyester core with polyethylene coating with Minimum Long Term Design Strength (LTDS) of more than 50% of ultimate tensile strength at 30 degree Celsius corresponding to 12 % strain of Gabion boxes, filled with boulders with least dimension of 200 mm, all as per drawing, all complete as per directions of Engineer in charge for having Long term design strength (LTDS) not less than 115 kN/m Note : Boulders shall be measured and paid seperately under item No 52 above.

Material and Labour for PVC pipe of 50 mm internal diameter as transverse drainage in Reinforced Structural wall as per the drawings etc complete all as specified and directed by Engr-in-Charge.

Material and Labour for perforated PVC pipe (lined with Geotextile) of 150 mm internal diameter, as longitudinal drainage in Reinforced Structural wall as per the drawings etc complete all as specified and directed by Engr-in-Charge.

Material and Labour for thermally bonded or needle punched Nonwoven geotextile behind the Gabion units as filter media confirming to technical specifications complete all as specified and directed by Engr-in-Charge.

Material and Labour for Supplying, filling, spreading & levelling stone boulders of size range 5 cm to 20 cm, behind RCC toe wall in the required thickness, including all leads & lifts, complete all as specified and directed by Engr-in-Charge.

Material and Labour for erosion Control mat (for surficial erosion control) of approx 450 gsm consisting of 2 layers of polymeric netting, having aperture size of 20mm x 20mm and a middle layer of coir as per manufactures recommendation. Max. width of rolls/each composite mat shall be 5m complete all as specified and directed by Engr-in-Charge.

Material and Labour for rolling the surface with light roller make the surface smoothen refilling with mixer of sand and good earth (sweet soil) at equal proportions and light watering and planting local grass turf with earth 50mm to 60mm thickness on prepared ground in plain or slope with proper level and ramming with tools wooden (Dhurmos) and maintenance for 60 days or more till the grass establish properly complete all as specified and directed by Engr-in-Charge.

Taking out of existing water supply DI pipe 400 mm dia and rerouting to new place including all fittings with spigot and socket ends all as specified and as directed by Engineer-in-Charge.

All as per Item No.62 above but 250mm bore

All as per Item No.62 above but 150mm bore

Supply and laying Centrifugally Cast (Spun) ductile Iron Pressure Pipe 400 mm dia with spigot & Socket end, Class K-9, confirming to IS: 8329/2000 (latest revision)- duly ISI marked including rubber tyton joint for DI pipe as specifed and as directed.

All as per Item No.65 above but 250mm bore

All as per Item No.65 above but 150mm bore Note : For item No 62 to 67, earth work will be measured and paid seperately under relevent item of schedule

Supply and fixing DI/CI fitting for spigot and socketed pipes or flanged pipes such as bends ( any type, radius and angle), tapers any type ( straight , bent, increasing / decresing or double socket etc), tee pieces ( single branch, 'Y ' juction, double branch, etc ), cross ( all socket and spigot , flanged , etc) collars,caps and plugs, for pipes of sizes 400/250/150 mm bore all as specifed all as directed.

Material and labour for run lead joint for DI/CI pipe and fitting for 400 mm bore

All as per Item No.69 above but 250 mm bore

All as per Item No.69 above but150 mm bore

Prasur Electricals & Engineering Co.

Hindustan Traders

AMR TRADERS

P NAIDU