Construction of Gabion wall in sliding zone near B9 hostel and Water channel toward valley side of B9 hostel at South Campus of IIT Mandi

Amount

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 in all lead and lift, as directed by Engineer-in-charge. All kinds of soil as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Excavating, supplying and filling of local earth (including royalty) by mechanical transport upto a lead of 5km also including ramming and watering of the earth in layers not exceeding 20 cm in trenches, plinth, sides of foundation etc. complete. as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - All work upto plinth level 1:3:6 (1 Cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size) as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:1½:3 (1 Cement: 1½ coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources) as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the following grades of concrete as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 1.10 times of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. All works upto plinth level Concrete of M30 grade with minimum cement content of 350 kg /cum as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Centering and shuttering including strutting, propping etc. and removal of form for all heights: Foundations, footings, bases of columns, etc for mass concrete as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Centering and shuttering including strutting, propping etc. and removal of form for all heights: Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Centering and shuttering including strutting, propping etc. and removal of form for Suspended floors, roofs, landings, balconies and access platform as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

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 as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Steel work welded in built up sections/ framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required. In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade: Two or more coats on new work as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Providing and fixing of Geotextile, 120 gsm non woven, 100% polyester of thickness 1 to 1.25 mm bonded to the surface with intermittent touch by heating the membrane by Butane Torch or as per the recommendation of technical staff as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Providing & making Gabion structure with Mechanically Woven Double Twisted Hexagonal Shaped Wire mesh Gabion Boxes as per IS 16014:2012,MORTH Clause 2500, of required size, Mesh Type 10x12(D=100 mm with tolerance of ± 2%) Zinc coated, Mesh wire diameter3.9 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 2.2mm, supplied @ 3% by weight of Gabion boxes, filled with boulders with least dimension of 200 mm, as per drawing, all complete as per direction of Engineer-in-charge as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Providing and laying Non Pressure NP-3 class (Medium duty) R.C.C. pipes including collars/spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete 1200 mm dia RCC pipes. (Laying by manual/ mechanical means) as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

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 Celcius corresponding to 12 % strain . Ultimate tensile strength- 800 kN/m as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Providing and fixing 110mm dia Unplasticized rigid PVC pipe of required size for weep holes in plum concrete walls including cutting, placing and fixing in required slope all complete as per entire satisfaction and direction of Engineer -in-charge including carriage of material within all lead and lift as per entire satisfaction and direction of Engineer-in-charge including carriage of material in all leads and lifts.

Anil Kumar