Erosion control measures at Operational area of Jabalpur Airport, Jabalpur (Phase-II)

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift, as directed by Engineer-in-charge.

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and waitering, lead up to 50 and for all lift.

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas within AAI Premises (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and filling avaliable earth obtained for subgrade, embankment, depressions as instructed and in layers not exceeding 20 cm (loose) in depth (or any thickness as approved by the Engineer-in-Charge in case vibratory roller / soil compactor is used) including breaking clods, watering, consolidating each layer with power road roller 8 -10 tonnes weight or vibratory roller / soil compactor of adequate capacity under optimum moisture content condition to give at least 95% of the maximum laboratory dry density (modified Proctor density) as per IS : 2720 (part VIII) complete including leveling, fine dressing to the required grade, camber and slope complete as per MORTH specifications and as directed by the Engineer-in-Charge with all leads and lifts. (The item includes cost of excavation, carriage of avaliable earth upto work site for all leads and lifts and compaction . Payment shall be made for compacted quantity only

Dry stone pitching 22.5 cm thick with available stones and preparing surface complete.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:4:8 (1 Cement : 4 coarse sand (zone-Ill) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources)

Surface dressing of the ground including removing vegetation and inequalities not exceeding 15 cm deep and disposal of rubbish, lead up to 50 m and lift up to 1.5 m. All kinds of soil

Supply and install 3D Reinforced Geo-composite Roled erosion control mat (Maccaferri / Rhoda cognax or equivalent make) of Polypropylene Polymer made three dimensional matrix of minimum mass per unit area 500 grams/sqm along with mechanically woven double twisted hexagonal shaped steel wire mesh of mesh wire dia. 2.7 mm and mesh type 10 x 12 having Zn coating, including fixing of U pins of 8 mm diameter of depth 300 mm at 1 m c/cspacing, at easily accessible location including top and bottom, with all leads and lifts, manpower and machinery, materials, labour etc. complete and as directed by Engineer.

Supply & install Gabion structure with Mechanically Woven Double Twisted Hexagonal Shaped Wire mesh Gabion box (Maccaferri / Rhoda cognax or equivalent make) with 2m wide tail as per IS 16014:2012, MORTH Clause 2500, of required size, Mesh Type 10x12 (D=100 mm with tolerance of ±2%) Zinic + PVC coated, Mesh wire diameter 2.7/3.7 mm, 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 soil filled Geo Bags (300 GSM Polypropylene (PP) Geo Bags of size 1.03 x 0.7 m), as per the approved GFC drawing, all complete as per directions of Engineer-in-charge.

Supplying & laying of drainage composite for use behind walls, between two different fills, alongside drains of road, below concrete lining of canals etc. Geocomposite for planar drainage, realized by thermobonding a draining core in extruded monofilaments with two filtering nonwoven geotextiles that may also be working as separation or protecting layers. The draining three dimensional core will have a “W’ configuration as longitudinal parallel channels. Minimum thickness to be 7.2 mm, with two filtering UV stabilized polypropylene nonwoven geotextile of minimum thickness of 0.75 mm charecteristic opening size (090) of 110 micron and tensile strength of 8.0 kN/m that will be working as separation or protecting layer, geocomposite having in plane flow capacity of 2.1 L/(m.s) at hydraulic gradient of 1.0 & 20 kPa pressure and tensile strength of 18 kN/m , with mass per unit area of 740 gsm, supplied in the form of roll for easy transportation to site of work as per detailed specification all complete as per directions of Engineer in charge.

Supply & install Gabion structure with Mechanically Woven Double Twisted Hexagonal Shaped Wire mesh Gabion box (Maccaferri / Rhoda cognax or equivalent make) with 2m wide tail as per IS 16014:2012, MORTH Clause 2500, of required size, Mesh Type 10x12 (D=100 mm with tolerance of ±2%) Zinic + PVC coated, Mesh wire diameter 2.7/3.7 mm, 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 available boulders with required shape and size, as per the approved GFC drawing, all complete as per directions of Engineer-in-charge.