Construction of retaining wall around the periphery of various buildings at NIT Patna, Bihta Campus, Bihar

Sl. No. Description Amount in (Rs.)

Amount in Rs. Amount in Rs.

1 EARTH WORK 6899790

2 REINFORCED CEMENT CONCRETE WORK 57361066

3 FINISHING 9098062

4 WATER PROOFING 26133130

5 NEW TECHNOLOGIES AND MATERIALS 8398991

GRAND TOTAL (IN Rs.) 10,78,91,040.00

GRAND TOTAL (IN Rs.) 10,78,91,040.00

Project :- Construction of retaining wall at NIT Patna, Bihta Campus

Bill of quantities(BOQ)

Sl. No. DSR- Description Unit DSR NDSR Amount in Rs.

2023/NDSR Quantity Rate (In Rs.) Rate (In Rs.) DSR NDSR

1.0 2.0 EARTH WORK

1.1 2.25 Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in Cum

layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and 35203.01 196.00 6899789.96

watering, lead up to 50 and for all lift.

2.0 5.0 REINFORCED CEMENT CONCRETE WORK

2.1 5.9 Centering and shuttering including strutting, propping etc. and removal of form for

2.1.1 5.9.2 Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

2.2 5.22 Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position

and binding all complete upto plinth level.

2.2.1 5.22.6 Thermo-Mechanically Treated bars of grade Fe-500D or more. Kg 249364.57 107.85 26893968.81

2.3 5.33 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

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 110% of the

specified minimum cement content, the contractor shall have discretion to either re-design the

mix or bear the cost of extra cement.

2.3.1 5.33.1 All works upto plinth level

2.3.1.1 5.33.1.2 Concrete of M30 grade with minimum cement content of 350 kg /cum Cum 1994.92 9655.70 19262315.78

3.0 13.0 FINISHING WORK

3.1 13.6 20 mm cement plaster of mix :

4.0 22.0 WATER PROOFING

4.1 NDSR Waterproofing of Retaining Wall

4.11 Providing & applying 2 components, solvent free, liquid applied elastomeric seamless hybrid

Polyurea Polyurethane Membrane, using plural component airless spray equipment, to form a

minimum system thickness of 1.5 mm in two alternative coats with a total consumption of 1.5-

1.6 kg / m2. The membrane shall have 100% Solids, VOC Free, Tensile strength > 15 Mpa as per

ASTM D 412, Elongation > 450% as per ASTM D 412, Static Crack bridging up to 2mm as per

ASTM C 836, Shore A Hardness > 85 ASTM D 2240, Puncture Resistance > 1000 N as per ASTM E

154, Water Head Resistance > 7 Bar as per ASTM D 5385.The coating should pass Dynamic Sqm 18666.52 1400 26133129.85

Crack Bridging as per EN 1062-7, Method B for 20,000 cycles at -20-degree temperature. Apply

primer coat of epoxy primer by roller/ airless spray guideline and coverage @ 5-6 m2/ltr

depends on porosity of concrete. Allow to cure for max 5-6 hours. Broadcast anti slip grains of

200-300 micron (dried sand) on wet primer at coverage of 0.8-1 kg/m2 and allow to come to

touch dry condition before application of Membrane.

5.0 26.0 NEW TECHNOLOGIES AND MATERIALS

5.1 26.30 Drilling suitable holes in reinforced or plain cement concrete with power driven drill machine to

a minimum depth of 100 mm upto 200 mm in RCC beams, lintels, columns and slabs to

introduce steel bars for sunshades/ balconies including fixing the steel bars in position using

epoxy resin anchor grout of approved make but excluding the cost of reinforcement, all

complete as per direction of Engineer-In-Charge.

5.1.1 26.30.1 Upto and including 12 mm dia. Each 58544.20 141.20 8266441.04

5.2 26.31 Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as

per specifications and direction of Engineer- In-charge complete in all respect.

5.2.1 26.31.2 Epoxy bonding adhesive having coverage 2.20 sqm/kg of approved make Sqm 298.63 285.20 85170.27

5.3 26.39 Providing and inserting 12 mm dia galvanised steel injection nipple in honey comb area and

along crack line including drilling of holes of required diametre (20 mm to 30 mm) up to depth

from 30 mm to 80 mm at required spacing and making the hole & crack dust free by blowing Each 200.00 236.90 47380.00

compressed air, sealing the distance between injection nipple with adhesive chemical of

approved make and allow it to cure complete as per direction of Engineer- In-Charge.

Total All Subhead 81757909.67 26133129.85

Grand Total (DSR + NDSR) 107891039.52

Grand Total (DSR + NDSR) 107891039.52