Retender - Construction of 33 kV Substation at Elamkulam and allied works - Rearranging existing yard at 110kV SS Perinthalmanna by moving 20MVA Transformer to other side of Bus and adding Tie Isolator between two line bays - Foundation works

Demolishing R.C.C. work manually / by mechanical means including stacking of steel bars and disposal of unserviceable material with in 50 metres lead as per direction of Engineer -in-Charge

Sorting/Picking collecting and stacking 40/20mm metal at suitable places near the yard from the already stacked departmental metal (assorted metal) having a distance of 50m (initial lead) from the yard is to be spred with this metal including all costs of labour for sorting , collecting and stacking etc as per the direction of departmental engineers at site (Approved observed data vide No. DB3/observed data/2020-21/948 dtd 30.09.2020 of Dy. CE. TCM)

Sorting/Picking collecting and stacking 6mm/sand/quarry dust at suitable places near the yard from the already stacked departmental metal (assorted metal) having a distance of 50m (initial lead) from the yard is to be spred with this metal including all costs of labour for sorting , collecting and stacking etc as per the direction of departmental engineers at site (Approved observed data vide No. DB3/observed data/2020-21/948 dtd 30.09.2020 of Dy. CE. TCM)

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-in-charge. All kinds of soil

Earth work in excavation in all classes of soil by mechanical means (Hydraulic excavator) / manual meansin foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan),including dressing of sides and ramming of bottoms, lift up to 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil

Excavation work by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift up to 1.5 m, including getting out the excavated soil and disposal of surplus excavated soils as directed, within a lead of 50 m. Ordinary rock

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 : 8 graded stone aggregate 40 mm nominal size

Centering and shuttering including strutting, propping etc. and removal of form work for : Foundations, footings, bases for columns.

Centering and shuttering including strutting, propping etc. and removal of form work for : Retaining walls, return walls, walls (any thickness) including attached pilasters, buttresses, plinth and string courses fillets, kerbs and steps etc..

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.

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): 3 graded stone aggregate 20 mm nominal size)

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level: 1:2:4 (cement : 2 coarse sand (zone-III)derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Solid block masonry using pre cast solid blocks ( factory made) of size 40x20x20cm or nearest available size confirming to IS 2185 part 1 of 1979 for foundation and plinth with thickness 20 cm and above in: CM 1:6 ( 1 cement : 6 coarse sand) etc complete

Plastering with CM 1:4,(1 cement; 4 fine sand) 12 mm thich floated hard and trwelled smooth

Setting foundation bolts for equipment structures to lines and levels as per approved drawings and directions of departmental officers including arranging templates, grouting, anchoring, removing the template after completion, hire charges of all required tools and plants etc. complete

Supplying, conveying 90lbs rail and angles to the plinth including cutting, fixing to line and level including all labor charges, cost of rails, charges for welding, hire charges of all required tools & plants etc. complete as directed.

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 watering, lead up to 50 m and lift up to 1.5 m.

Spreading and laying departmental stone 6mm/ river sand/ quarry dust keeping line and levels as directed by departmental officers at site for 50m from stack to yard ( Approved vide TS No.TDM 72/2020-21 dated 05.10.2020)

Spreading and laying departmental stone metal 40/20 mm keeping line and levels as directed by departmental officers at site for 50m from stack to yard ( Approved vide TS No.TDM 72/2020-21 dated 05.10.2020)

Supplying and laying 110mm PVC pipes including trenching up to a depth of 60cm, refilling etc. complete as per the direction of departmental officers at site (observed data)

Cutting 32mm MS rod in required length etc complete as per the direction of the departmental officers.

Bending the departmentally supplied 32mm MS rod for crossing cable trench / foundations / risers etc as per the direction of departmental officers at site. Charges include the lifting of 32mm MS rod from the stockyard to the site, hire charges for the bending tool etc complete. (Heat bending of MS rod is not allowed.)

Laying of earth mat of required size as specified using 32mm MS rod to the excavated trench, charges include levelling, lowering and placing in trenches for lap joining, bending etc complete as per the direction of departmental officers at site. Charges include the lifting of 32mm MS rod from the stockyard to the site.

Driving down the ground electrode upto a depth of 3m from the already taken earth pit as directed by the departmental officers.

Drilling holes and driving down MS ground electrode from the bottom level of trench in all classes of soil including rock etc complete as per the direction of departmental officers at site. Charges include the lifting of ground electrode from the stockyard to the site, backfilling, placing and leveling the electrode complete.

Drilling bore holes of sizes 150mm or nearest in all classes of soil including hire charges of plant and machinery, cost of oil, fuel, tool etc. and taking all necessary precautions for safety to the substation equipments etc. as per the direction of departmental officers at site.

Welding of overlapping joints for mat,riser lap joints with 32/25mm MS rod placed in trenches, having 150mm in length 6mm in thick on both sides of the rod and both ends of overlapped MS rods with 6mm welding thickness after cleaning the surfaces neatly. Charges includes cost of low hydrogen DC electrode (No. E7018), hire charges of DC arc welding set and tools and plants required, current charges including labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of department officers.

Welding the nodal points (cross joints ) in the trenches at two sides to a thickness of 6mm after cleaning the surface neatly. Charges includes cost of low hydrogen DC electrodes (No. E7018), hire charges of DC welding set and tools and plants required, current charges, labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of departmental officers.

Welding the ground electrode with the main electrode , after cleaning the surface neatly. Charges includes cost of low hydrogen content DC electrodes (No. E7018), hire charges of DC arc welding set, tools and plants, current charges, labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of departmental officers.

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