NIT No.135/WBTDCL OF 2025-26 (Technical)

Earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading or stacking the spoils within a lead of 75 m. as directed. The item includes necessary trimming the sides of trenches, levelling, dressing and ramming the bottom, bailing out water as required complete. (a) Depth of excavation not exceeding 1,500 mm

(b) Depth of excavation for additional depth beyond 1,500 mm. and upto 3,000 mm. but not requiring shoring

Earth work in filling in foundation trenches or plinth with good earth, in layers not exceeding 150 mm. including watering and ramming etc. layer by layer complete. (Payment to be made on the basis of measurement of finished quantity of work) (a) With earth obtained from excavation of foundation.

(iv) With carried earth arranged by the contractor within a radius exceeding 5 km. but not exceeding 10 km. including cost of carried earth.

(A) Filling in foundation or plinth by silver sand in layers not exceeding 150 mm as directed and consolidating the same by thorough saturation with water, ramming complete including the cost of supply of sand. (payment to be made on measurement of finished quantity) (B) Do - by fine sand

Supply of Stone Boulder 150 mm of N. Bengal variety Materials delivered and stacked at site

Labour for laying 150 mm to 200 mm boulder soling including rough dressing hand packing and ramming down small pieces in the interstics including rolling and preparing the bed to proper level and filling up all joints with sandy clay or earth. NB. -- This rate only for Northern Circle, NBCC-I & NBCC-II

Cement concrete with graded stone ballast (40 mm size excluding shuttering) In ground floor (B) With N.B. Variety stone metal. (a) 1:3:6 proportion

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement, if any, in ground floor as per relevant IS codes. (b) River bazree

Ordinary Cement concrete (mix 1:1.5:3) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement if any, in ground flooras per relevant IS codes.

Reinforcement for reinforced concrete work in all sorts of structures including distribution bars, stirrups, binders etc initial straightening and removal of loose rust (if necessary), cutting to requisite length, hooking and bending to correct shape, placing in proper position and binding with 16 gauge black annealed wire at every intersection, complete as per drawing and direction. For works in foundation and upto roof of ground floor/upto 4 m

Plum concrete work with 40 % cement concrete with 30 mm down graded stone metal and 60 % stone boulder of size 150 mm and above, placed in position as directed excluding shuttering if any. (i) (1:3:6) proportion

Brick work with 1st class bricks in cement mortar (1:4)

(a) In foundation and plinth

(b) In superstructure, ground floor

Plaster (to wall, floor, ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course, scaffolding/staging where necessary (Ground floor).[Excluding cost of chipping over concrete surface] (i) With 1:6 cement mortar (b) 20 mm thick plaster

Neat cement punning about 1.5mm thick in wall, dado, window sill, floor etc. NOTE:Cement 0.152 cu.m per100 sq.m

Hire and labour charges for shuttering with centering and necessary staging upto 4 m using approved stout props and thick hard wood planks of approved thickness with required bracing for concrete slabs, beams and columns, lintels curved or straight including fitting, fixing and striking out after completion of works (upto roof of ground floor) (When the height of a particular floor is more than 4 m the equivalent floor height shall be taken as 4 m and extra for works beyond the initial 4 m ht. shall be allowed under 12 (e) for every 4 m or part thereof) (f) 25 mm to 30 mm shuttering without staging in foundation

(c) Steel shuttering or 9 to 12 mm thick approved quality ply board shuttering in any concrete work

Supplying and laying Polythene Sheet (150gm / sq.m.) over damp proof course or below flooring or roof terracing or in foundation or in foundation trenches

Providing weep holes in Brick masonry / Plain / Reinforced concrete abutment, wing wall / return wall with 100 mm dia AC pipe, extending through the full width of the structure with slope of 1V:20H towards drawing face. Complete as per drawing and Technical specifications.

Supplying & laying as per IRC-SP:063-2004 paver unit of any shade of approved quality as per relevant IS code, laid in pattern as directed in pavement, footpath, driveway (paver block only), etc including necessary underlay complete in all respect with all labour and material. [Border concrete if necessary to be paid separately]. Note: Sub-grade CBR should not be less than 5.

a) Supplying & laying 25 mm thick Tiles of any shed of approved quality as per relevent IS Code: 1237-2012 laids in pattern as directed for footpath, ramp, staircase of public building (over 25 mm thick (Avg) Cement mortar (1:3) & Cement Slurry @ 4.4 kg/Sq.m at back side of Block, (Cement for Mortar & Slurry to be supplied by Department) in all respect i.e, with all labour and material. [Border concrete if necessary to be paid separately]. Note: Sub-grade CBR should not be less than 5.

(ii) Coloured Decorative

(c) Supplied and laying in the specified pattern of Interlocking Concrete Block Pavement (ICBP) with concrete blocks (with Concrete as specified as per Table-1 of IS :15658 : 2006) manufactured from BIS Licence Manufacturer, with spacer nib (Small protruding profiles on the vertical face of a Paver Block used as a device for keeping minimum joint gap between the Paving Blocks, as per Cl. No. 3.26 of IS 15658) and of specifed size and shape with aspect Ratio (The ratio of length to thickness of a Paver Block, as per Cl. No. 3.3 of IS 15658) as per Table - 2 of IS :15658 : 2006 with flexural strength / breaking load as per Annexure - G of IS 15658 on the prepared Base Course of specified CBR as per Table-1 of IRC SP 63 (2018) or else as mentioned in design and drawing with a cushing of compacted bedding sand of 25-35 mm thick (grading of the bedding sand as per Cl. No. 6.5.1 of IRC SP 63) and filling up the gaps in between Paver Blocks with joint filling sand (grading of the bedding sand as per Cl. No. 6.5.2 of IRC SP 63) and completing the edges with cut blocks as per Cl. No. 8.7 of IRC SP - 63 (2018) with proper confinement of bedding and joint filling sand, compacting, levelling and filling up the edge gap.

60 mm thick

Total