Construction of Precast RCC Storm Water Drain from Shantivan Red Light Service Lane to Vijay Ghat Drain under Sub Division-3 of Division (C and ND)- Roads during 2025-26.

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

All kinds of soil.

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.

Centering and shuttering including strutting, propping etc. and removal of form work for :

Foundations, footings, bases for columns

Providing and laying in position ready mixed or site batched design mix cement concrete for plain 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 and finishing as per direction of the engineer-in-charge; for the following grades of concrete. 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 minimum specified 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 M10 grade with minimum cement content of 220 kg /cum

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.

Nominal concrete 1:3:6 or richer mix (including equivalent design mix)

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge..

In cement mortar

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Providing and erecting 2.00 metre high temporary barricading at site; each panel of size 2.50m x 2.00m made of 40x40x6 mm angle iron or 50x50x3 mm hollow MS tube posts/ horizontal members/ bracings covered with 1.63 mm thick MS sheet. The sheet shall be fixed with 30x5 mm MS flat by suitable welding / riveting. The panels shall be made so that gap of 50 cm above the ground is available making over all height as 2.50m. MS channel ISLC 75 @ 5.70 kg/m, 50 cm long shall be provided at the bottom having oval shaped holes of size 50x25 mm at both ends with 50 cm long MS angle 40x40x6 mm bracing. Suitable arrangement shall be made to fix the barricading to avoid from overturning by providing 250 mm long expansion fasteners at both ends.

The work shall be executed as per drawing/ direction of Engineer-in-Charge which includes writing and painting, arrangement for traffic diversion such as traffic signals during construction at site for day and night, glow lamps, reflective signs, marking, flags, caution tape as directed by the Engineer-in- Charge. The barricading provided shall be retained in position at site continuously i/c shifting of barricading from one location to another location as many times as required during the execution of the entire work till its completion. Rate include its maintenance for damages, painting, all incidentals, labour, materials, equipments and works required to execute the job. The barricading shall not be removed without prior approval of Engineer-in-Charge. (Note :- One time payment shall be made for providing barricading from start of work till completion of work i/c shifting. The barricading provided shall remain to be the property of the contractor on completion of the work).

Providing, erecting, maintaining and removing temporary protective screens made out of specified fabric with all necessary fixing arrangement to ensure that it remains in position for the work duration as required by the Engineer-in-charge

Wooven PVC cloth

Modified Estimate Cost after correction on DSR items on a/c of [email protected] i.e. deduct for effect of correction factor (1-0.973)=0.027 on X (DSR Item)

Add 3% cost index on DSR items

Providing & fixing pre-fabricated precast solid open U shaped RCC drain, drain cover, box culvert, crash barrier, retaining wall, silt chamber etc. using wet-cast technology with self-compacting concrete of grade M-50 and thermomechanically treated (TMT) steel bars of grade Fe-550D including straightening, cutting, bending, placing in position and binding, all complete upto plinth level with provisions of shear keys, connecting loops, necessary cutouts/holes lined with dowel tubes of required sizes for services with proper lifting arrangement of various thicknesses, shape and size using high quality steel molds including loading, transportation from factory to site of work, unloading, stacking at site and placing in final position with the help of required capacity cranes all complete as per IS11447:1985 and as per approved shop drawings and design mix complete as per the directions of Engineer-in-Charge.

The RCC precast drain along with drain cover taken together as an integrated system, shall be capable of carrying a wheel load of 5 Ton of vehicular load.The precast elements shall be manufactured in a controlled factory environment with approved methodology/technology having all facilities including automated steam curing, automated reinforcement cage making facility, NABL accredited in-house laboratory with all testing facilities etc. complete as per the directions of Engineer-in-Charge. The installation of RCC precast drain, drain cover, box culvert etc. shall be done in correct and final position with proper line, level and plumb at site after making all arrangements of requisite T&P e.g., cranes, push-pull jacks etc. for lifting, placing and alignment of elements within erection tolerance as per IS-15916:2020, as per approved shop drawings, complete as per direction of Engineer-in-Charge including cost of all material and all tools & machinery required for casting for all works up to plinth level complete as per the directions of Engineer-in-Charge.

Credit of old brick which is comes from dismantling of brick work of item no. 6

Credit of old brick bats which is comes from dismantling of brick work of item no. 6