Provision of Erosion Control Measures on Slope Portion for Runway Extension Area at Jabalpur Airport

Amount

Dry stone pitching 22.5 cm thick including supply of stones and preparing surface complete.

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 lift upto 1.5 m, as directed by Engineer-incharge.All kinds of soil

(DSR 2021 Item No : 4.1.10) : 1:5:10 (1 cement : 5 coarse sand (zone-III) derived from natural sources : 10 graded stone aggregate 40 mm nominal size derived from natural sources)

(DSR 2021 Item No : 5.1.2) : Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level : 1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural source

(DSR 2021 Item No : 5.9.2) : Centering and shuttering including strutting, propping etc. and removal of form for Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

(DSR 2021 Item No : 5.22.6) : Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. Thermo-Mechanically Treated bars of grade Fe-500D or more.

Random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20 mm nominal size) upto plinth level with :Cement mortar 1:6 (1 cement : 6 coarse sand)

Supply and installation of a three-dimensional Roled erosion control (RECP) mat (Maccaferri or equivalent make) coforming to MORTH SPECIFICATION made of polymeric reinforcement with a polymeric protective coating with a combined mass per unit area of more than 500 gm/sqm. The composite shall have a longitudinal tensile strength of min 20 kN/m and a nominal thickness of more than 13mm including fixing of U pins of 8mm diameter upto depth 500mm at 2 m c/c spacing, top support rope, bottom support rope, thimbles, U- clamps,etc at the easily accessible location including top and bottom, with all leads and lifts, manpower and machinery, materials, labour etc. complete and as directed by Engineer - In - Charge.

Supply and application of High Performance-Flexible Growth Medium (HP-FGM) (Maccaferri or equivalent make) which is 100% biodegradable, composed of 100% recycled, thermally refined (within a pressurized vessel) virgin wood fibers, crimped interlocking biodegradable fibers, mineral activators, and wetting agents (including high-viscosity colloidal polysaccharides, crosslinked biopolymers and water absorbents) along with standard prescriptive agronomic formulations such as fertilizer, extended-term dyes, soil pH modifiers, bio stimulant materials and seeds which is hydraulically-applied for Erosion control and faster growth of Vegetation.Rate of application of medium is 0.32 kg per sqm( ie., 0.15 kg /sqm for Pre Mulching & 0.17 kg/sqm over BSM and below RECP)

Supply and application of Biotic Soil Media (BSM) (Maccaferri or equivalent make), a combination of recycled Thermally Refined bark and wood fibers with a proprietary blend of biopolymers, biochar, seaweed extract, humic acid, endomycorrhizae and other beneficial constituents. All components of the Biotic Soil Media blend shall be of naturally derived and renewable, and engineered to optimize moisture retention, growth and establishment of vegetation. BSM is applied hydraulically over soil substrate to add organic matter so as to enrich soil nutrients prior to application of HP-FGM.Rate of application of medium is 0.504 kg/Sqm.

Maintaining the applied surface for minimum of 03 Months period including supplying of water, adequate irrigation and maintaining the vegetation complete as per the direction of E-I-C.

H.M.B.S Textiles Pvt. Ltd.

Maccaferri Environmental Solutions Pvt Ltd

PIONEER FOUNDATION ENGINEERS PVT LTD